Document:

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                                                                   EXHIBIT 10.40

                              AMENDED AND RESTATED

                         RECEIVABLES PURCHASE AGREEMENT

                                     BETWEEN

                                 CAREMARK INC.,

                                    AS SELLER

                                       AND

                             MP RECEIVABLES COMPANY,

                                  AS PURCHASER

                          DATED AS OF JANUARY 31, 2001

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                                TABLE OF CONTENTS

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ARTICLE I  DEFINITIONS...........................................................................................     1
   Section 1.1    Definitions....................................................................................     1
   Section 1.2    Other Terms....................................................................................     2
   Section 1.3    Computation of Time Periods....................................................................     2
ARTICLE II  PURCHASE, CONVEYANCE AND SERVICING OF RECEIVABLES....................................................     2
   Section 2.1    Sales..........................................................................................     2
   Section 2.2    Servicing of Receivables.......................................................................     4
ARTICLE III  CONSIDERATION AND PAYMENT; REPORTING................................................................     4
   Section 3.1    Purchase Price.................................................................................     4
   Section 3.2    Payment of Purchase Price......................................................................     4
   Section 3.3    Settlement Report..............................................................................     5
ARTICLE IV  REPRESENTATIONS AND WARRANTIES.......................................................................     6
   Section 4.1    Seller's Representations and Warranties........................................................     6
   Section 4.2    Reaffirmation of Representations and Warranties by the Seller; Notice of Breach................     8
ARTICLE V  COVENANTS OF THE SELLER...............................................................................     9
   Section 5.1    Covenants of the Seller........................................................................     9
ARTICLE VI  REPURCHASE OBLIGATION................................................................................    13
   Section 6.1    Mandatory Repurchase...........................................................................    13
   Section 6.2    Dilutions, Etc.................................................................................    13
ARTICLE VII  CONDITIONS PRECEDENT................................................................................    14
   Section 7.1    Conditions Precedent...........................................................................    14
ARTICLE VIII  TERM AND TERMINATION...............................................................................    15
   Section 8.1    Term...........................................................................................    15
   Section 8.2    Effect of Termination..........................................................................    15
ARTICLE IX  MISCELLANEOUS PROVISIONS.............................................................................    16
   Section 9.1    Amendments, Etc................................................................................    16
   Section 9.2    Governing Law; Submission to Jurisdiction......................................................    16
   Section 9.3    Notices........................................................................................    16
   Section 9.4    Severability of Provisions.....................................................................    17
   Section 9.5    Assignment.....................................................................................    17
   Section 9.6    Further Assurances.............................................................................    17
   Section 9.7    No Waiver; Cumulative Remedies.................................................................    18
   Section 9.8    Counterparts...................................................................................    18
   Section 9.9    Binding Effect; Third-Party Beneficiaries......................................................    18
   Section 9.10     Merger and Integration.......................................................................    19
   Section 9.11     Headings.....................................................................................    19
   Section 9.12     Exhibits.....................................................................................    19
   Section 9.13     Bankruptcy Petition..........................................................................    19
   Section 9.14     Limitation of Liability......................................................................    19

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EXHIBIT A         Form of Subordinated Note A-1
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                                       i
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                              AMENDED AND RESTATED

                         RECEIVABLES PURCHASE AGREEMENT

         THIS AMENDED AND RESTATED RECEIVABLES PURCHASE AGREEMENT, dated as of
January 31, 2001 (as amended, supplemented or otherwise modified and in effect
from time to time, this "Agreement"), is entered into between CAREMARK INC., a
California corporation, as seller (in such capacity, the "Seller") and MP
RECEIVABLES COMPANY, a Delaware corporation, as purchaser (in such capacity, the
"Purchaser").

                              W I T N E S S E T H:

         WHEREAS, the parties hereto entered into that Receivables Purchase
Agreement dated as of December 4, 1998 ("Original RPA").

         WHEREAS, the parties hereto intend to amend and restate the Original
RPA on the terms and conditions set forth herein.

         WHEREAS, the Purchaser desires to purchase from time to time certain
accounts receivable from the Seller existing on the Effective Date and
thereafter until the Purchase Termination Date;

         WHEREAS, the Seller desires to sell and assign from time to time all of
the Seller's right, title and interest in, to and under certain accounts
receivable to the Purchaser upon the terms and conditions hereinafter set forth;

         NOW, THEREFORE, for good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, it is hereby agreed by and between
the Purchaser and the Seller as follows:

                                    ARTICLE I

                                   DEFINITIONS

         SECTION 1.1       DEFINITIONS.

         All capitalized terms used herein shall have the meanings specified
herein or, if not so specified, the meanings specified in, or incorporated by
reference into, Schedule A to the Amended and Restated Receivables Transfer
Agreement, dated as of January 31, 2001 (as amended, supplemented or otherwise
modified and in effect from time to time, the "Receivables Transfer Agreement"),
by and among MP Receivables Company, as Transferor thereunder, Caremark Inc., as
Originator and Collection Agent thereunder, Park Avenue Receivables Corporation,
as a Transferee thereunder, Redwood Receivables Corporation, as a Transferee

<PAGE>   4

thereunder, General Electric Capital Corporation, as a Group Agent and the
Funding Agent thereunder and The Chase Manhattan Bank, as a Group Agent
thereunder.

         SECTION 1.2       OTHER TERMS.

         All accounting terms not specifically defined herein shall be construed
in accordance with generally accepted accounting principles. All terms used in
Article 9 of the Relevant UCC, and not specifically defined herein, are used
herein as defined in such Article 9.

         SECTION 1.3       COMPUTATION OF TIME PERIODS.

         Unless otherwise stated in this Agreement, in the computation of a
period of time from a specified date to a later specified date, the word "from"
means "from and including" and the words "to" and "until" each means "to but
excluding."

                                   ARTICLE II

                PURCHASE, CONVEYANCE AND SERVICING OF RECEIVABLES

         SECTION 2.1       SALES.

         (a)      Upon the terms and subject to the conditions set forth herein,
and without recourse to the Seller (except to the extent specifically provided
herein), the Seller hereby sells, assigns, transfers and conveys to the
Purchaser, and the Purchaser hereby purchases from the Seller, all of the
Seller's right, title and interest, whether now owned or hereafter acquired and
wherever located, in, to and under the Receivables outstanding on the Effective
Date and thereafter owned by the Seller through any Purchase Termination Date,
together with all Related Security and Collections with respect thereto and all
Proceeds of the foregoing. Any sale, assignment, transfer and conveyance
hereunder does not constitute an assumption by the Purchaser of any obligations
of the Seller or any other Person to Obligors or to any other Person in
connection with the Receivables or under any Related Security or any other
agreement or instrument relating to the Receivables.

         (b)      In connection with the sales provided for herein, the Seller
agrees to record and file on or prior to the Effective Date, at its own expense,
a financing statement or statements with respect to the Receivables and the
other property described in Section 2.1(a) sold by the Seller hereunder meeting
the requirements of applicable state law in such manner and in such
jurisdictions as are necessary to perfect and protect the interests of the
Purchaser created hereby under the Relevant UCC against all creditors of, and
purchasers from, the Seller, and to deliver either the originals of such
financing statements or file-stamped copies of such financing statements or
other evidence of such filings to the Purchaser on or prior to the Effective
Date.

         (c)      The Seller agrees that from time to time, at its expense, it
will promptly execute and deliver all instruments and documents and take all
actions as may be necessary or as the Purchaser may reasonably request in order
to perfect or protect the interest of the Purchaser in the Receivables purchased
hereunder or to enable the Purchaser to exercise or enforce any of its

<PAGE>   5

rights hereunder. Without limiting the foregoing, the Seller will, in order to
accurately reflect the purchase and sale transactions contemplated by this
Agreement, execute and file such financing or continuation statements or
amendments thereto or assignments thereof (as permitted pursuant hereto) as may
be requested by the Purchaser and will mark its master data processing records
(or related subledger) and other documents with a legend describing the purchase
by the Purchaser of the Receivables and the lien of the Funding Agent pursuant
to the Receivables Transfer Agreement and stating "These accounts receivable
have been sold to MP Receivables Company. Subsequent to such sale, an interest
in these accounts receivable has been granted to General Electric Capital
Corporation, as Funding Agent, pursuant to a Receivables Transfer Agreement
dated as of January 31, 2001". The Seller shall, upon request of the Purchaser,
obtain such search reports as the Purchaser shall request. To the fullest extent
permitted by applicable law, the Purchaser shall be permitted to sign and file
continuation statements and amendments thereto and assignments thereof without
the Seller's signature. Carbon, photographic or other reproduction of this
Agreement or any financing statement shall be sufficient as a financing
statement.

         (d)      It is the express intent of the Seller and the Purchaser that
each conveyance by the Seller to the Purchaser pursuant to this Agreement of the
Receivables, including without limitation, all Receivables, if any, constituting
general intangibles as defined in the UCC, be construed as a valid and perfected
sale and absolute assignment of such Receivables by the Seller to the Purchaser
(rather than the grant of a security interest to secure a debt or other
obligation of the Seller) and that the right, title and interest in and to such
Receivables conveyed to the Purchaser be prior to the rights of and enforceable
against all other Persons at any time, including without limitation lien
creditors, secured lenders, purchasers and any Person claiming through the
Seller. However, if, contrary to the mutual intent of the parties, any
conveyance of Receivables, including without limitation any Receivables
constituting general intangibles, is not construed to be both a valid and
perfected sale and absolute assignment of such Receivables and a conveyance of
such Receivables that is prior to the rights of and enforceable against all
other Persons at any time, including without limitation lien creditors, secured
lenders, purchasers and any Person claiming through the Seller, then, it is the
intent of the Seller and the Purchaser that (i) this Agreement also shall be
deemed to be, and hereby is, a security agreement within the meaning of the
Relevant UCC; and (ii) the Seller shall be deemed to have granted to the
Purchaser as of the date of this Agreement, and the Seller hereby grants to the
Purchaser a security interest in, to and under all of the Seller's rights,
titles and interests in, to and under the Receivables, together with all Related
Security and Collections with respect thereto and all Proceeds of the foregoing,
to secure the rights of the Purchaser set forth in this Agreement or as such
rights may be determined in accordance with applicable law and the performance
and payment of all indebtedness, obligations and liabilities of the Seller to
the Purchaser arising hereunder, including without limitation any liabilities
arising from any breach by the Seller of any of its representations and
warranties in the first sentence of Section 4.1(c) hereof (and any breach by the
Seller of any of its representations and warranties in the first sentence of
Section 4.1(c) hereof with respect to the conveyance of any particular
Receivable shall be deemed to occur as of the time of such conveyance). Any such
security interest in any Receivable granted to the Purchaser under this Section
2.1(d) shall survive the sale and assignment of such Receivable pursuant to
Section 2.1(a) of this Agreement and shall not be merged with the Purchaser's
other rights, titles or interests in, to or under such property.

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         SECTION 2.2       SERVICING OF RECEIVABLES.

         In connection with the consummation of the sales provided for in this
Agreement, Seller hereby assigns and transfers to Purchaser and Purchaser's
assignees all of Seller's right, title and interest in and to each Lock-Box
Account, and Seller relinquishes all power to transfer, possess and control the
Lock-Box Accounts and the contents thereof (except any powers with respect to
the Lock-Box Accounts and contents thereof that are granted to Seller in its
capacity as Collection Agent). The Seller agrees to perform all servicing of
Receivables for the Purchaser and its transfers and assigns pursuant to the
terms of the Receivables Transfer Agreement. The Seller shall hold in trust for
the Purchaser all Records which evidence or relate to the Receivables or Related
Security, Collections or Proceeds with respect thereto.

                                   ARTICLE III

                      CONSIDERATION AND PAYMENT; REPORTING

         SECTION 3.1       PURCHASE PRICE.

         The purchase price for the Receivables and related property conveyed to
the Purchaser by the Seller under this Agreement on any Business Day shall be a
dollar amount equal to the product of (a) the aggregate Outstanding Balance of
the Receivables sold on such Business Day and (b) one minus the then applicable
Discount Percentage (the "Purchase Price").

         SECTION 3.2       PAYMENT OF PURCHASE PRICE.

         (a)      The Purchase Price for Receivables sold by the Seller on any
Business Day shall be paid either (i) in cash to the extent funds are available
therefor in excess of necessary working capital or (ii) if Purchaser does not
have sufficient cash to pay the Purchase Price, by means of (A) an advance under
the Subordinated Note (each, an "Advance") or (B) with the consent of the
Seller, treating a portion of the Purchase Price as capital contributed by the
Seller to Purchaser or (iii) with the consent of the Seller, any combination of
the foregoing. In the event Purchaser does not have sufficient cash to pay the
Purchase Price due with respect to any sale of Receivables hereunder, and the
Seller is not willing to consent to the treatment of such insufficiency as a
capital contribution, such insufficiency shall be evidenced by the making of an
Advance in an original principal amount equal to such cash shortfall owed to the
Seller; provided, however, that the Seller shall not make an Advance to
Purchaser to the extent that the aggregate amount of outstanding Advances would
be an amount such that the net worth of the Purchaser would be less than
$20,000,000 (the "Advance Limit"). No sales of Receivables hereunder shall be
made on and after the Purchase Termination Date. On the date of the initial
purchase of Receivables hereunder, the net worth of the Purchaser shall be at
least $20,000,000.

         (b)      All Advances made by the Seller to Purchaser shall be
evidenced by a single subordinated note, duly executed on behalf of Purchaser,
in substantially the form of Exhibit A annexed hereto, delivered on the
Effective Date and payable to the Seller in a principal amount equal to the
Advance Limit thereunder (as amended, supplemented or otherwise modified and in

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effect from time to time, the "Subordinated Note"). The Seller is hereby
authorized by Purchaser to endorse on the schedule attached to the Subordinated
Note (or a continuation of such schedule attached thereto and made a part
thereof) an appropriate notation evidencing the date and amount of each Advance,
as well as the date and amount of each payment made by the Purchaser with
respect thereto; provided, however, that the failure of any Person to make such
a notation shall not affect any obligations of Purchaser thereunder. Any such
notation shall be conclusive and binding as to the date and amount of such
Advance, or payment of principal or interest thereon, absent manifest error.

         (c)      The terms and conditions of the Subordinated Note and all
Advances thereunder shall be as follows:

                  (i)      Repayment of Advances. All amounts paid by the
         Purchaser with respect to the Advances shall be allocated first to the
         repayment of accrued interest until all such interest is paid, and then
         to the outstanding principal amount of the Advances. Subject to the
         provisions of this Agreement, the Purchaser may borrow, repay and
         reborrow Advances on and after the date hereof and prior to the
         termination of this Agreement, subject to the terms, provisions and
         limitations set forth herein, including, without limitation, the
         requirement that no Advance be made to the extent that after giving
         effect thereto the aggregate outstanding principal amount of all
         Advances would exceed the Advance Limit.

                  (ii)     Interest. The Subordinated Note shall bear interest
         from its date on the outstanding principal balance thereof at a rate
         per annum equal to the Prime Rate plus 2%, calculated as of the
         Effective Date, as reset for each succeeding calendar month following
         February 2001 as the rate in effect as of the last Business Day of the
         calendar month immediately preceding such calendar month. Interest on
         each Advance shall be computed based on the number of days elapsed in a
         year of 360 days.

                  (iii)    Subordination. The Seller's rights under the
         Subordinated Note shall be fully subordinated to any rights of the
         Funding Agent, as agent for the Transferees pursuant to the Receivables
         Transfer Agreement and the Asset Purchase Agreement, and shall not
         evidence any rights in the Receivables or related property.

                  (iv)     Offsets, etc. The Purchaser may offset any amount due
         and owing by the Seller against any amount due and owing by Purchaser
         to the Seller under the terms of the Subordinated Note.

         SECTION 3.3       SETTLEMENT REPORT.

         On each Settlement Date, the Seller shall deliver to the Purchaser a
monthly report, substantially in the form of Exhibit E attached to the
Receivables Transfer Agreement, showing, among other things, (a) the aggregate
Purchase Price of Receivables sold by the Seller to the Purchaser in the
preceding month and (b) the aggregate Outstanding Balance of such Receivables
that are Eligible Receivables.

<PAGE>   8

                                   ARTICLE IV

                         REPRESENTATIONS AND WARRANTIES

         SECTION 4.1       SELLER'S REPRESENTATIONS AND WARRANTIES.

         The Seller represents and warrants to the Purchaser as of the Effective
Date and on each Business Day on which Receivables are sold hereunder and after
giving effect to each such sale:

         (a)      Corporate Existence and Power. The Seller is a corporation
duly organized, validly existing and in good standing under the laws of its
jurisdiction of incorporation and has all corporate power and all material
governmental licenses, authorizations, consents and approvals required to carry
on its business in each jurisdiction in which its business is now conducted,
except where the failure to have such licenses, authorizations, consents and
approvals is not reasonably likely to have a Material Adverse Effect. The Seller
is duly qualified to do business in, and is in good standing in, every other
jurisdiction in which the nature of its business requires it to be so qualified,
except where the failure to be so qualified or in good standing would not have a
Material Adverse Effect.

         (b)      Corporate and Governmental Authorization; Contravention. The
execution, delivery and performance by the Seller of the Transaction Documents
to which it is a party are within the Seller's corporate powers, have been duly
authorized by all necessary corporate action, require no action by or in respect
of, or filing with, any Official Body or official thereof (except for the filing
of UCC financing statements as required by this Agreement), and do not
contravene, or constitute a default under, any provision of applicable law, rule
or regulation or of the certificate of incorporation or bylaws of the Seller or
of any material agreement or instrument or any judgment, injunction, order, writ
or decree binding upon the Seller and will not result in the creation or
imposition of any Adverse Claim (except those created by this Agreement and the
Receivables Transfer Agreement) on the assets of the Seller or any of its
Affiliates (other than, in the case of an Affiliate, Adverse Claims that are not
reasonably likely to have a Material Adverse Effect).

         (c)      Valid and Perfected Sale; Binding Effect. Each purchase of
Receivables and Related Security by the Purchaser hereunder shall constitute a
valid and perfected sale and assignment by the Seller to the Purchaser,
enforceable against creditors of, and purchasers from, the Seller. Each of the
Transaction Documents to which the Seller is a party will constitute the legal,
valid and binding obligation of the Seller, enforceable in accordance with its
terms, subject to applicable bankruptcy, insolvency, moratorium or other similar
laws affecting the rights of creditors and general equitable principles (whether
considered in a proceeding in equity or at law).

         (d)      Quality of Title. Immediately preceding the sale of the
Receivables and related property pursuant to this Agreement, the Seller was the
owner of all of the Receivables, free and clear of any Adverse Claim. On or
prior to the date hereof, all financing statements and other documents required
to be recorded or filed in order to perfect and protect the interest of the
Purchaser in, to and under the Receivables against all creditors of and
purchasers from the Seller

<PAGE>   9

will have been duly filed in each filing office necessary for such purpose and
all filing fees and taxes, if any, payable in connection with such filings shall
have been paid in full.

         (e)      Accuracy of Information. All information heretofore furnished
by the Seller to the Purchaser and the Funding Agent for purposes of or in
connection with this Agreement, any other Transaction Document, or any
transaction contemplated hereby or thereby is, and all such information
hereafter furnished by the Seller to the Purchaser, the Funding Agent, the Group
Agents and the Transferees will be, true and correct in every material respect,
on the date such information is stated or certified.

         (f)      Tax Status. The Seller has filed all tax returns (Federal,
state and local) required to be filed and has paid or made adequate provision
for the payment of all taxes, assessments and other governmental charges.

         (g)      Action, Suits. There are no actions, suits or proceedings
pending, or to the knowledge of the Seller threatened, against or affecting the
Seller or its properties, in or before any court, arbitrator or other body,
which are reasonably likely, individually or in the aggregate, to have a
Material Adverse Effect.

         (h)      Place of Business. The principal place of business and chief
executive office of the Seller are located at 2211 Sanders Road, Northbrook,
Illinois 60062, and the offices where the Seller keeps all of the Records, are
located at 2211 Sanders Road, Northbrook, Illinois 60062, or such other
locations notified to the Purchaser in accordance with this Agreement in
jurisdictions where all action required by the terms of this Agreement has been
taken and completed. In addition, Exhibit I of the Receivables Transfer
Agreement lists the federal employer identification number of the Seller.

         (i)      Solvency. The Seller is not insolvent, does not have
unreasonably small capital with which to carry on its business, is able to pay
its debts generally as they become due and payable, and its liabilities do not
exceed its assets.

         (j)      Tradenames, Etc. As of the date hereof: (i) the Seller has
only the subsidiaries and divisions listed on Exhibit J to the Receivables
Transfer Agreement; and (ii) the Seller has, within the last five (5) years,
operated only under the tradenames identified on Exhibit J to the Receivables
Transfer Agreement, and, within the last five (5) years, has not changed its
name, merged with or into or consolidated with any other corporation or been the
subject of any proceeding under Title 11, United States Code (Bankruptcy),
except as disclosed in Exhibit J to the Receivables Transfer Agreement.

         (k)      Nature of Receivables. Each Receivable included in the
calculation of the Net Receivables Balance in fact satisfies at such time the
definition of "Eligible Receivable" and is an "eligible asset" as defined in
Rule 3a-7 under the Act.

         (l)      Credit and Collection Policy. Since December 1, 2000, there
has been no change in the Credit and Collection Policy which could have a
Material Adverse Effect. Since such

<PAGE>   10

date, no change has occurred in the overall rate of collection of the
Receivables which could have a Material Adverse Effect.

         (m)      Collections and Servicing. Since December 1, 2000, there has
been no change in the ability of the Seller to service and collect the
Receivables which could have a Material Adverse Effect.

         (n)      Binding Effect of Receivables and Contract. Each Receivable
and related Contract constitutes a legal, valid and binding obligation of the
Obligor, enforceable against the Obligor, subject to the effect of bankruptcy,
insolvency, reorganization or similar laws affecting creditors' rights generally
(whether considered in a proceeding at law or in equity).

         (o)      Not an Investment Company. The Seller is not, and is not
controlled by, an "investment company" within the meaning of the Act, or is
exempt from all provisions of such Act.

         (p)      ERISA. Each of the Seller and its ERISA Affiliates is in
compliance in all material respects with ERISA, and no lien exists in favor of
the Pension Benefit Guaranty Corporation on any of the Receivables.

         (q)      Lock-Box Accounts. The names and addresses of all the Lock-Box
Banks, together with the account numbers of the Lock-Box Accounts at such
Lock-Box Banks, are specified in Exhibit C to the Receivables Transfer
Agreement. All Obligors have been instructed to make payment to a Lock-Box
Account.

         (r)      Bulk Sales. No transaction contemplated by this Agreement
requires compliance with any bulk sales act or similar law.

         (s)      Brokers. No broker or finder acting on behalf of the Seller or
any Affiliate of the Seller was employed or utilized in connection with this
Agreement or the other Transaction Documents or the transactions contemplated
hereby or thereby and neither the Seller nor any Affiliate of the Seller has any
obligation to any Person in respect of any finder's or brokerage fees in
connection therewith.

         (t)      Use of Proceeds. No proceeds of any sale will be used by the
Seller (i) for a purpose that violates, or would be inconsistent with,
Regulation T, U or X promulgated by the Board of Governors of the Federal
Reserve System from time to time or (ii) to acquire any security in any
transaction which is subject to Section 13 or 14 of the Securities Exchange Act
of 1934, as amended.

         SECTION 4.2       REAFFIRMATION OF REPRESENTATIONS AND WARRANTIES BY
THE SELLER; NOTICE OF BREACH.

         On the Effective Date and on each Business Day on which Receivables are
sold hereunder, the Seller, by accepting the proceeds of such sale, shall be
deemed to have certified that all representations and warranties described in
Section 4.1 are true and correct on and as of

<PAGE>   11

such day as though made on and as of such day. The representations and
warranties set forth in Section 4.1 shall survive the conveyance of the
Receivables to the Purchaser. Upon discovery by the Purchaser or the Seller of a
breach of any of the foregoing representations and warranties, the party
discovering such breach shall give prompt written notice to the other within
three (3) Business Days of such discovery.

                                    ARTICLE V

                             COVENANTS OF THE SELLER

         SECTION 5.1       COVENANTS OF THE SELLER.

         The Seller hereby covenants and agrees with the Purchaser that, for so
long as this Agreement is in effect, and until all Receivables sold to the
Purchaser pursuant hereto shall have been paid in full or written-off as
uncollectible, unless the Purchaser otherwise consents in writing, the Seller
covenants and agrees as follows:

         (a)      Conduct of Business. The Seller will, and will cause each of
its Affiliates to, carry on and conduct its business in substantially the same
manner and in substantially the same fields of enterprise as it is presently
conducted and do all things necessary to remain duly incorporated, validly
existing and in good standing as a domestic corporation in its jurisdiction of
incorporation and will maintain all requisite authority to conduct its business
in each jurisdiction in which its business is conducted, except where the
failure to carry on and conduct such business, remain duly incorporated, validly
existing and in good standing or maintain such authority is not reasonably
likely to have a Material Adverse Effect.

         (b)      Compliance with Laws. The Seller will, and will cause each of
its Affiliates to, comply in all material respects with all laws, rules,
regulations, orders, writs, judgments, injunctions, decrees or awards to which
it may be subject, except where the failure to so comply is not reasonably
likely to have a Material Adverse Effect.

         (c)      Furnishing of Information and Inspection of Records. The
Seller will furnish to the Purchaser from time to time such information with
respect to the Receivables as the Purchaser may reasonably request, including,
without limitation, listings identifying the Obligor and the Outstanding Balance
for each Receivable. The Seller will, at any time and from time to time during
regular business hours, upon at least one (1) Business Day's prior notice, at
the Purchaser's expense, permit the Purchaser, or its agents or representatives,
(i) to examine and make copies of and abstracts from all Records and (ii) to
visit the offices and properties of the Seller for the purpose of examining such
Records, and to discuss matters relating to Receivables or the Seller's
performance hereunder with any of the officers, directors, employees or
independent public accountants of the Seller having knowledge of such matters.
If a Potential Termination Event or a Termination Event shall have occurred and
be continuing, the Seller shall provide such access at all times and without
advance notice.

         (d)      Keeping of Records and Books of Account. The Seller will
maintain a system of accounting established and administered in accordance with
generally accepted accounting

<PAGE>   12

principles, and will maintain and implement administrative and operating
procedures (including, without limitation, for up to twenty-four (24) months, an
ability to recreate records evidencing Receivables in the event of the
destruction of the originals thereof), and keep and maintain, or obtain, as and
when required, all documents, books, records and other information reasonably
necessary or advisable for the collection of all Receivables (including, without
limitation, records adequate to permit the daily identification of each
Receivable and all Collections of and adjustments to each existing Receivable).
The Seller will give the Purchaser prompt notice of any change in the
administrative and operating procedures referred to in the previous sentence to
the extent such change is reasonably likely to have a Material Adverse Effect.

         (e)      Performance and Compliance with Receivables and Contracts. The
Seller at its expense will timely and fully perform and comply with all material
provisions, covenants and other promises required to be observed by it under the
Contracts related to the Receivables and shall pay when due any taxes
(including, without limitation, sales, excise or personal property taxes)
payable by it in connection with any of the Receivables.

         (f)      Credit and Collection Policies. The Seller will comply in all
material respects with the Credit and Collection Policy in regard to each
Receivable and the related Contract.

         (g)      Collections. The Seller shall instruct all Obligors to cause
all Collections to be deposited directly to a Lock-Box Account.

         (h)      Collections Received. The Seller shall hold in trust, and
remit immediately, but in no event later than one (1) Business Day after receipt
thereof, all Collections received from time to time by the Seller to a Lock-Box
Account.

         (i)      Sale Treatment. Except to the extent a conveyance is treated
as a capital contribution pursuant to Section 3.2(a) hereof, the Seller agrees
to treat each conveyance hereunder for all purposes (including, without
limitation, tax and financial accounting purposes) as a sale and, to the extent
any reporting is required, shall report the transactions contemplated by this
Agreement on all relevant books, records, tax returns, financial statements and
other applicable documents as a sale of the Receivables to the Purchaser.

         (j)      No Sales, Liens, Etc. Except as otherwise provided herein, the
Seller will not sell, assign (by operation of law or otherwise) or otherwise
dispose of, or create or suffer to exist any Adverse Claim upon (or the filing
of any financing statement) or with respect to, any Receivable, Related Security
or Collections or upon or with respect to any Lockbox Account to which any
Collections of any Receivable are sent, or, in each case, assign any right to
receive income in respect thereof.

         (k)      No Extension or Amendment of Receivables. The Seller will
extend, amend or otherwise modify the terms of any Receivable, and will amend,
modify or waive any term or condition of any Contract related thereto, only as
provided in the Receivables Transfer Agreement or as contemplated by the Credit
and Collection Policy unless such modification is not reasonably likely to have
a Material Adverse Effect (solely with respect to the collectibility of such
Receivable); provided that the classification of any such Receivable as a
Defaulted

<PAGE>   13

Receivable shall not be affected by such extension; provided, further, that no
such amendment, modification or waiver shall cause or result in the affected
Receivable becoming an Eligible Receivable if, prior to such amendment,
modification or waiver, the affected Receivable was not an Eligible Receivable
or prevent such affected Receivable from being excluded as an Eligible
Receivable if such affected Receivable would have been excluded as an Eligible
Receivable if such amendment, modification or waiver had not been made or
granted.

         (l)      No Change in Business or Credit and Collection Policy. The
Seller will not make any change in the Credit and Collection Policy which might
impair the collectibility of any Receivable, unless such change is not
reasonably likely to have a Material Adverse Effect.

         (m)      No Mergers, Etc. The Seller will not (i) consolidate or merge
with or into any other Person, or (ii) except as contemplated by the Transaction
Documents, sell, lease or transfer (whether by dividend or otherwise) all or
substantially all or any material portion of its assets to any other Person;
provided, that the Seller may merge or consolidate with another Person or sell,
lease or transfer any portion of its assets if such merger or consolidation,
sale, lease or transfer does not, individually or in the aggregate, (A) cause a
Termination Event or Potential Termination Event under the Receivables Transfer
Agreement or (B) have a Material Adverse Effect.

         (n)      Change in Payment Instructions to Obligors; Deposits to
Lockboxes. The Seller will not add or terminate, or make any change to, any
Lock- Box Account, except in accordance with the Receivables Transfer Agreement.
The Seller will not deposit or otherwise credit, or instruct to be so deposited
or credited, to any Lock-Box Account, cash or cash proceeds other than
Collections of Receivables.

         (o)      Change of Name, Etc. The Seller shall not change its name,
identity or structure or its chief executive office, unless at least ten (10)
days prior to the effective date of any such change the Seller delivers to the
Purchaser and the Funding Agent (i) financing statements under the Relevant UCC,
executed by the Seller necessary to reflect such change and to continue the
perfection of the Purchaser's interest in the Receivables and (ii) new or
revised Lock-Box Agreements which reflect such change and enable the Funding
Agent, on behalf of the Transferee Groups, to exercise its rights under the
Transaction Documents.

         (p)      Indemnification. The Seller agrees to indemnify, defend and
hold the Purchaser and its assignees harmless from and against any and all loss,
liability, damage, judgment, claim, deficiency, or expense (including interest,
penalties, reasonable attorneys' fees and amounts paid in settlement) to which
the Purchaser and its assignees may become subject insofar as such loss,
liability, damage, judgment, claim, deficiency, or expense arises out of or is
based upon a breach by the Seller of its representations, warranties and
covenants contained herein, or any written information certified in any schedule
or certificate delivered by the Seller hereunder or in connection with the
Transaction Documents, being untrue in any material respect at the time when
made or deemed made; provided, however (i) the foregoing indemnification is not
intended to, and shall not, constitute a guaranty of the collectibility or
payment of the Receivables conveyed hereunder and (ii) nothing in this Section
5.1(p) shall require the Seller to indemnify the Purchaser or its assignees for
Receivables which are not collected, not paid or otherwise

<PAGE>   14

uncollectible on account of the insolvency, bankruptcy or financial inability to
pay of the applicable Obligor. The obligations of the Seller under this Section
5.1(p) shall be considered to have been relied upon by the Purchaser, the
Funding Agent, the Transferees and the Group Agents and shall survive the
execution, delivery, performance and termination of this Agreement for a period
of three (3) years following the Purchase Termination Date, regardless of any
investigation made by the Purchaser, the Funding Agent, the Transferees or the
Group Agents or on behalf of either of them.

         (q)      ERISA. The Seller shall promptly give the Purchaser written
notice upon becoming aware that the Seller is not in compliance in all material
respects with ERISA or that any ERISA lien on any of the Receivables exists.

         (r)      Separate Existence.  The Seller shall at all times:

                  (i)      maintain its deposit account or accounts separate
         from those of the Purchaser and ensure that its funds will not be
         diverted to the Purchaser nor will such funds be commingled with the
         funds of the Purchaser (other than funds deposited to a Lock-Box
         Account, which funds may be commingled for a period not exceeding two
         (2) Business Days);

                  (ii)     to the extent that it shares any officers or other
         employees with the Purchaser, the salaries of and the expenses related
         to providing benefits to such officers and other employees shall be
         fairly allocated among it and the Purchaser, and the Seller and the
         Purchaser shall bear their respective fair share of the salary and
         benefit costs associated with all such common officers and employees;

                  (iii)    to the extent that it jointly contracts with the
         Purchaser to do business with vendors or service providers or to share
         overhead expenses, the costs incurred in so doing shall be allocated
         fairly between it and the Purchaser, and it and the Purchaser shall
         bear their fair shares of such costs. To the extent that it contracts
         or does business with vendors or service providers where the goods and
         services provided are partially for the benefit of the Purchaser, the
         costs incurred in so doing shall be fairly allocated between it and the
         Purchaser in proportion to the benefit of the goods or services each is
         provided, and the Seller and the Purchaser shall bear their respective
         fair shares of such costs;

                  (iv)     enter into all material transactions with the
         Purchaser, whether currently existing or hereafter entered into, only
         on an arm's length basis, it being understood and agreed that the
         transactions contemplated in the Transaction Documents meet the
         requirements of this clause (iv);

                  (v)      maintain office space that is physically segregated
         from the office space of the Purchaser (but which may be located at the
         same address as the Purchaser) and, to the extent that it and the
         Purchaser have offices in the same location, there shall be a fair and
         appropriate allocation of overhead costs between them, and each shall
         bear its fair share of such expenses;

<PAGE>   15

                  (vi)     take, or refrain from taking, as the case may be, all
         other actions that are necessary to be taken or not to be taken in
         order to comply with this Section 5.1;

                  (vii)    cause each Affiliate included in the Parent Group to
         conduct its business in a manner designed not to mislead third parties
         as to the separate identity of the Purchaser; and

                  (viii)   cause each Affiliate included in the Parent Group to
         comply with each of the factual assumptions such that each such
         assumption contained in the legal opinion of King & Spalding delivered
         pursuant to the Section 4.1(k) of the Receivables Transfer Agreement is
         true and correct.

         (s)      Use of Proceeds. The Seller shall not utilize the proceeds of
the Purchase Price obtained by it for each sale made by it hereunder (i) for a
purpose that violates, or would be inconsistent with, Regulation T, U or X
promulgated by the Board of Governors of the Federal Reserve System from time to
time or (ii) to acquire any security in any transaction which is subject to
Section 13 or 14 of the Securities Exchange Act of 1934, as amended. The Seller
shall utilize the proceeds of the Purchase Price obtained by it for each sale
made by it hereunder for general corporate purposes and to pay any related
expenses payable by the Seller under this Agreement and the other Transaction
Documents in connection with the transactions contemplated hereby and thereby
and for no other purpose.

         (t)      Other Indebtedness. If the Seller grants, conveys or suffers
to exist any Lien on or in respect of any of its assets or properties that
constitute Other Receivables to any Person as security for any Indebtedness
incurred by the Seller, the Seller will simultaneously therewith cause such
Person to enter into an intercreditor agreement with the Funding Agent on terms
and conditions reasonably satisfactory to the Funding Agent and each Group
Agent.

                                   ARTICLE VI

                             REPURCHASE OBLIGATION

         SECTION 6.1       MANDATORY REPURCHASE.

         If, on any day, any representation or warranty made herein with respect
to any Receivable which has been sold by the Seller hereunder is determined to
be incorrect or untrue in any material respect as of the date such
representation or warranty was made, the Seller shall on such day repurchase
such Receivable and pay to the Purchaser an amount equal to the aggregate
Outstanding Balance of such Receivable.

         SECTION 6.2       DILUTIONS, ETC.

         The Seller agrees that if, on any day, the Outstanding Balance of a
Receivable which has been sold by the Seller hereunder is either (a) reduced as
a result of defective, rejected or returned goods or other dilution factor, any
billing adjustment or other adjustment, or (b) reduced or cancelled as a result
of (i) a setoff or offset in respect of any claim by any Person (whether

<PAGE>   16

such claim arises out of the same or a related transaction or an unrelated
transaction), or (ii) any action by any Federal or state taxing authority or as
a result of the payment by any Obligor of any portion of a Receivable
constituting a tax or governmental fee or charge to any Person other than the
Purchaser, then the Seller shall be deemed to have received on such day a
collection of such Receivable to the extent of the amount of such reduction,
cancellation or payment made by the Obligor and shall pay to the Purchaser an
amount equal to such reduction or cancellation on the last Business Day of the
calendar month in which such reduction or cancellation occurred.

                                   ARTICLE VII

                              CONDITIONS PRECEDENT

         SECTION 7.1       CONDITIONS PRECEDENT.

         The obligations of the Purchaser to purchase the Receivables on the
Effective Date and on any Business Day on which Receivables are sold hereunder
shall be subject to the satisfaction of the following conditions:

         (a)      All representations and warranties of the Seller contained in
this Agreement shall be true and correct on the Effective Date and on the
applicable Business Day of sale, with the same effect as though such
representations and warranties had been made on such date;

         (b)      All information concerning the Receivables provided to the
Purchaser shall be true and correct in all material respects as of the Effective
Date, in the case of any Receivables sold on the Effective Date, or the date
such Receivables are sold, in the case of any Receivables created after the
Effective Date and sold by the Seller to the Purchaser on a subsequent Business
Day;

         (c)      The Seller shall have substantially performed all other
obligations required to be performed by the provisions of this Agreement and the
other Transaction Documents to which it is a party;

         (d)      The Seller shall have either filed or caused to be filed the
financing statement(s) required to be filed pursuant to Section 2.1(b);

         (e)      All corporate and legal proceedings, and all instruments in
connection with the transactions contemplated by this Agreement and the other
Transaction Documents shall be satisfactory in form and substance to the
Purchaser, and the Purchaser shall have received from the Seller copies of all
documents (including, without limitation, records of corporate proceedings)
relevant to the transactions herein contemplated as the Purchaser may reasonably
have requested;

         (f)      On the Effective Date, the Seller shall deliver to the
Purchaser and the Funding Agent a certification of the aggregate Outstanding
Balance of the Receivables in existence as of the close of business on January
31, 2001 (except that, with respect to Vendor Receivables, the

<PAGE>   17

aggregate Outstanding Balance of the Vendor Receivables shall be as of the close
of business on December 31, 2000); and

         (g)      The Purchase Termination Date shall not have occurred.

                                  ARTICLE VIII

                              TERM AND TERMINATION

         SECTION 8.1       TERM.

         This Agreement shall commence as of the first day on which all of the
conditions precedent have been satisfied and shall continue in full force and
effect until the date following the earliest of (a) the date designated by the
Purchaser or the Seller as the Purchase Termination Date at any time following
ten (10) days' prior written notice to the other (with a copy thereof to the
Funding Agent), (b) the earlier of (i) the occurrence of the Termination Date
and (ii) the date on which the Funding Agent (acting at the direction of the
Required APA Banks), on behalf of the Transferee Groups, declares a Termination
Event or a Potential Termination Event pursuant to the Receivables Transfer
Agreement, (c) the date of occurrence of an Event of Bankruptcy with respect to
either the Purchaser or the Seller or (d) the date on which either the Purchaser
or the Seller defaults on its obligations hereunder, which default continues
unremedied for more than ten (10) days after written notice (any such date being
a "Purchase Termination Date"); provided, however, that the termination of this
Agreement pursuant to this Section 8.1 hereof shall not discharge any Person
from any obligations incurred prior to such termination, including, without
limitation, any obligations to make any payments with respect to any Receivable
sold prior to such termination.

         SECTION 8.2       EFFECT OF TERMINATION.

         Following the termination of this Agreement pursuant to Section 8.1,
the Seller shall not sell, and the Purchaser shall not purchase, any
Receivables. No termination, rejection or failure to assume the executory
obligations of this Agreement in any Event of Bankruptcy with respect to the
Seller or the Purchaser shall be deemed to impair or affect the obligations
pertaining to any executed sale or executed obligations, including, without
limitation, pre-termination breaches of representations and warranties by the
Seller or the Purchaser. Without limiting the foregoing, prior to termination,
the failure of the Seller to deliver computer records of Receivables or any
reports regarding the Receivables shall not render such transfer or obligation
executory, nor shall the continued duties of the parties pursuant to this
Agreement render a completed sale executory.

<PAGE>   18

                                   ARTICLE IX

                            MISCELLANEOUS PROVISIONS

         SECTION 9.1       AMENDMENTS, ETC.

         This Agreement and the rights and obligations of the parties hereunder,
including the Subordinated Note, may not be amended, supplemented, waived or
otherwise modified except in an instrument in writing signed by the Purchaser
and the Seller and consented to in writing by the Funding Agent. Any
reconveyance executed in accordance with the provisions hereof shall not be
considered an amendment or modification to this Agreement.

         SECTION 9.2       GOVERNING LAW; SUBMISSION TO JURISDICTION.

         (a)      This Agreement shall be governed by and construed in
accordance with the laws of the State of New York.

         (b)      The parties hereto hereby submit to the nonexclusive
jurisdiction of the United States District Court for the Southern District of
New York and of any New York state court sitting in The City of New York for
purposes of all legal proceedings arising out of or relating to this agreement
or the transactions contemplated hereby. Each party hereto hereby irrevocably
waives, to the fullest extent it may effectively do so, any objection which it
may now or hereafter have to the laying of the venue of any such proceeding
brought in such a court and any claim that any such proceeding brought in such a
court has been brought in an inconvenient forum. Nothing in this Section 9.2
shall affect the right of the Purchaser to bring any other action or proceeding
against the Seller or its property in the courts of other jurisdictions.

         SECTION 9.3       NOTICES.

         All demands, notices and communications hereunder shall be in writing
and shall be deemed to have been duly given if personally delivered at or mailed
by registered mail, return receipt requested, to:

         (a)      in the case of the Purchaser:

                                    MP RECEIVABLES COMPANY
                                    2211 Sanders Road
                                    Northbrook, Illinois  60062
                                    Attention: Chris Luthin
                                    Telecopy:  (847) 559-5709

         (b)      in the case of the Seller:

                                    CAREMARK INC.
                                    2211 Sanders Road
                                    Northbrook, Illinois 60062

<PAGE>   19

                                    Attention: Chris Luthin
                                    Telecopy:  (847) 559-5709

                           in each case, with a copy to:

                                    GENERAL ELECTRIC CAPITAL CORPORATION,
                                    as Funding Agent
                                    201 High Ridge Road
                                    Stamford, Connecticut 06297
                                    Attention: Vice President - Portfolio/
                                               Caremark Inc.
                                    Telephone: (203) 316-7607
                                    Telecopy:  (203) 316-7821

or, as to each party, at such other address as shall be designated by such party
in a written notice to each other party.

         SECTION 9.4       SEVERABILITY OF PROVISIONS.

         If any one or more of the covenants, agreements, provisions or terms of
this Agreement shall for any reason whatsoever be held invalid, then such
covenants, agreements, provisions, or terms shall be deemed severable from the
remaining covenants, agreements, provisions, or terms of this Agreement and
shall in no way affect the validity or enforceability of the other provisions of
this Agreement.

         SECTION 9.5       ASSIGNMENT.

         This Agreement may not be assigned by the parties hereto, except that
the Purchaser may assign its rights hereunder pursuant to the Receivables
Transfer Agreement to the Funding Agent for the benefit of the Transferees as
security for the Purchaser's obligations under the Receivables Transfer
Agreement and the other Transaction Documents. The Purchaser hereby notifies the
Seller (and the Seller hereby acknowledges) that the Purchaser, pursuant to the
Receivables Transfer Agreement, has assigned its rights (but not its
obligations) hereunder to the Funding Agent for the benefit of the Transferees.
All rights of the Purchaser hereunder may be exercised by the Funding Agent to
the extent of its rights hereunder and under the other Transaction Documents.

         SECTION 9.6       FURTHER ASSURANCES.

         (a)      The Purchaser and the Seller agree to do and perform, from
time to time, any and all acts and to execute any and all further instruments
required or reasonably requested by the other party more fully to effect the
purposes of this Agreement and the other Transaction Documents, including,
without limitation, the execution of any financing statements or continuation
statements or equivalent documents relating to the Receivables for filing under
the provisions of the Relevant UCC or other laws of any applicable jurisdiction.

         (b)      If Seller fails to perform any of its obligations under this
Section 9.6, Purchaser (or its assigns) may (but shall not be required to)
perform, or cause performance of, such

<PAGE>   20

obligations, and Purchaser's (or such assigns') costs and expenses incurred in
connection therewith shall be payable by Seller as provided in Section 5.1(p).
Seller irrevocably authorizes Purchaser (and its assigns) at any time and from
time to time in the sole discretion of Purchaser (or its assigns), and appoints
Purchaser (and its assigns) as its attorney(ies)-in-fact, (i) to execute on
behalf of Seller as debtor/seller and to file financing statements necessary or
desirable in Purchaser's (or its assigns') sole discretion to perfect and to
maintain the perfection and priority of the interest of Purchaser in the
Receivables and the associated Related Security and Collections and (ii) to file
a carbon, photographic or other reproduction of this Agreement or any financing
statement with respect to the Receivables as a financing statement in such
offices as Purchaser (or its assigns) in their sole discretion deem necessary or
desirable to perfect and to maintain the perfection and priority of Purchaser's
interests in such Receivables. This appointment is coupled with an interest and
is irrevocable. From and after July 1, 2001: (A) Seller hereby authorizes
Purchaser (or its assigns) to file financing statements and other filing or
recording documents with respect to the Receivables and Related Security
(including any amendments thereto, or continuation or termination statements
thereof), without the signature or other authorization of Seller, in such form
and in such offices as Purchaser (or any of its assigns) reasonably determines
appropriate to perfect or maintain the perfection of interests of Purchaser (or
its assigns) hereunder, (B) Seller acknowledges and agrees that it is not
authorized to, and will not, file financing statements or other filing or
recording documents with respect to the Receivables or Related Security
(including any amendments thereto, or continuation or termination statements
thereof), without the express prior written approval by the Funding Agent,
consenting to the form and substance of such filing or recording document, and
(C) Seller approves, authorizes and ratifies any filings or recordings made by
or on behalf of the Funding Agent as expressly contemplated by this Section
9.6(b) in connection with the perfection of the ownership or security interests
in favor of Purchaser or the Funding Agent as agent for the Transferees under
the Receivables Transfer Agreement.

         SECTION 9.7       NO WAIVER; CUMULATIVE REMEDIES.

         No failure to exercise and no delay in exercising, on the part of the
Purchaser, the Seller or the Funding Agent, any right, remedy, power or
privilege hereunder, shall operate as a waiver thereof; nor shall any single or
partial exercise of any right, remedy, power or privilege hereunder preclude any
other or further exercise thereof or the exercise of any other right, remedy,
power or privilege. The rights, remedies, powers and privileges herein provided
are cumulative and not exhaustive of any rights, remedies, powers and privilege
provided by law.

         SECTION 9.8       COUNTERPARTS.

         This Agreement may be executed in two or more counterparts including
telecopy transmission thereof (and by different parties on separate
counterparts), each of which shall be an original, but all of which together
shall constitute one and the same instrument.

         SECTION 9.9       BINDING EFFECT; THIRD-PARTY BENEFICIARIES.

         This Agreement and the other Transaction Documents will inure to the
benefit of and be binding upon the parties hereto and their respective
successors and permitted assigns. The

<PAGE>   21

Transferees, the Group Agents and the Funding Agent are each intended by the
parties hereto to be third-party beneficiaries of this Agreement.

         SECTION 9.10      MERGER AND INTEGRATION.

         Except as specifically stated otherwise herein, this Agreement and the
other Transaction Documents set forth the entire understanding of the parties
relating to the subject matter hereof, and all prior understandings, written or
oral, are superseded by this Agreement and the other Transaction Documents.

         SECTION 9.11      HEADINGS.

         The headings herein are for purposes of reference only and shall not
otherwise affect the meaning or interpretation of any provision hereof.

         SECTION 9.12      EXHIBITS.

         The schedules and exhibits referred to herein shall constitute a part
of this Agreement and are incorporated into this Agreement for all purposes.

         SECTION 9.13      BANKRUPTCY PETITION.

         Seller covenants and agrees that, prior to the date that is one year
and one day after the payment in full of all outstanding obligations of
Purchaser under the Receivables Transfer Agreement, it will not institute, take
any action in furtherance of instituting, take any action to cause any Person to
institute or join any other Person in instituting, against Purchaser any
bankruptcy, reorganization, arrangement, insolvency or liquidation proceedings
or other similar proceeding under any applicable law. The agreement of the
Purchaser under this Section 9.13 shall survive the termination of this
Agreement.

         SECTION 9.14      LIMITATION OF LIABILITY.

         Seller covenants and agrees that it will not make any claim against
Purchaser for any special, indirect, consequential or punitive damages in
respect of any claim for breach of contract or any other theory of liability
arising out of or related to the transactions contemplated by this Agreement or
the other Transaction Documents, or any act, omission or event occurring in
connection herewith or therewith; and Seller hereby waives, releases, and agrees
not to sue upon any claim for any such damages, whether or not accrued and
whether or not known or suspected to exist in its favor. Notwithstanding
anything in this Agreement to the contrary, Purchaser shall not be permitted to
make any payment with respect to any of its obligations to pay to Seller any
amount otherwise required to be paid by it hereunder or under the Subordinated
Note in excess of any amount available to Purchaser after paying or making
provision for the payment of its obligations under the Receivables Transfer
Agreement. All payment obligations of Purchaser hereunder and under the
Subordinated Note are subject to the availability of funds in excess of the
amounts necessary for Purchaser to pay its obligations under the Receivables
Transfer Agreement.

<PAGE>   22

                  [REMAINDER OF PAGE INTENTIONALLY LEFT BLANK]

         IN WITNESS WHEREOF, the Purchaser and the Seller each have caused this
Amended and Restated Receivables Purchase Agreement to be duly executed by their
respective officers as of the day and year first above written.

                                    CAREMARK INC.,
                                    as Seller

                                    By:
                                       -----------------------------------------
                                    Name:
                                         ---------------------------------------
                                    Title:
                                          --------------------------------------

                                    MP RECEIVABLES COMPANY,
                                    as Purchaser

                                    By:
                                       -----------------------------------------
                                    Name:
                                         ---------------------------------------
                                    Title:
                                          --------------------------------------

<PAGE>   23

         Acknowledged and agreed as of the date first above written:

         GENERAL ELECTRIC CAPITAL CORPORATION,
         as Funding Agent for the benefit of Transferee Groups

         By:
            --------------------------------------------------------------------
         Name:
              ------------------------------------------------------------------
         Title: Duly Authorized Signatory

<PAGE>   24

                                    EXHIBIT A

                            FORM OF SUBORDINATED NOTE

January [31], 2001

         FOR VALUE RECEIVED, the undersigned, MP RECEIVABLES COMPANY, a Delaware
corporation (the "Maker"), hereby promises to pay to the order of CAREMARK INC.,
a California corporation (the "Payee"), on February ___, 200_ as provided for in
the Amended and Restated Receivables Purchase Agreement dated as of the date
hereof between the Maker and the Payee (as such agreement may from time to time
be amended, supplemented or otherwise modified and in effect, the "Receivables
Purchase Agreement"), the lesser of the principal sum of
[________________________________] Dollars ($[___________]) or the aggregate
unpaid principal amount of all Advances to the Maker from the Payee pursuant to
the terms of the Receivables Purchase Agreement, in lawful money of the United
States of America in immediately available funds, and to pay interest from the
date thereof on the principal amount hereof from time to time outstanding, in
like funds, at said office, at the rate per annum set forth in the Receivables
Purchase Agreement and shall be payable in arrears on the last Business Day of
each calendar month.

         The Maker hereby waives diligence, presentment, demand, protest and
notice of any kind whatsoever. The non-exercise by the holder hereof of any of
its rights hereunder in any particular instance shall not constitute a waiver
thereof in that or any subsequent instance.

         All borrowings evidenced by this Subordinated Note and all payments and
prepayments of the principal hereof and interest hereon and the respective dates
thereof shall be endorsed by the holder hereof on the schedule attached hereto
and made a part hereof, or on a continuation thereof which shall be attached
hereto and made a part hereof, or otherwise recorded by such holder in its
internal records; provided, however, that the failure of the holder hereof to
make such a notation or any error in such a notation shall not in any manner
affect the obligation of the Maker to make payments of principal and interest in
accordance with the terms of this Subordinated Note and the Receivables Purchase
Agreement.

         The Maker shall have the right to prepay and, subject to the
limitations set forth in the Receivables Purchase Agreement, reborrow Advances
made to it without penalty or premium.

         Payee shall have the right to receive, and Maker shall make, any and
all payments and prepayments relating to the loans made under this Subordinated
Note provided that, from the date hereof until the date on which the Aggregate
Unpaids under the Receivables Transfer Agreement have been paid in full, after
giving effect to any such payment or prepayment, the net worth of the Maker
shall be at least $20,000,000. Payee hereby agrees that at any time during which
the conditions set forth in the proviso of the immediately preceding sentence
shall not be satisfied, Payee shall be subordinate in right of payment to the
prior payment of any amounts owing by or obligation of Maker under the
Receivables Transfer Agreement. The subordination

<PAGE>   25

provisions contained herein are for the direct benefit of, and may be enforced
by, the Funding Agent as agent for the Transferees and/or any of their
respective assignees (collectively, the "Senior Claimants") under the
Receivables Transfer Agreement. Until the date that is one year and one day
after the date on which the Aggregate Unpaids under the Receivables Transfer
Agreement have been paid in full, Payee will not institute, take any action in
furtherance of instituting, take any action to cause any Person to institute or
join any other Person in instituting, against Maker any bankruptcy,
reorganization, arrangement, insolvency or liquidation proceedings or other
similar proceeding under any applicable law. Should any payment, distribution or
security or proceeds thereof be received by Payee in violation of this
paragraph, Payee agrees that such payment shall be segregated and held in trust
for the benefit of, and deemed to be the property of, and shall be immediately
paid over and delivered to the Funding Agent for the benefit of the Transferees.

         Upon the occurrence of any bankruptcy, reorganization, arrangement,
insolvency or liquidation proceedings or other similar proceeding under any
applicable law involving Maker as debtor, then and in any such event the Senior
Claimants shall receive payment in full of all amounts due or to become due on
or in respect of the Aggregate Unpaids (including "Discount" as defined and as
accruing under the Receivables Transfer Agreement after the commencement of any
such proceeding, whether or not any or all of such Discount is an allowable
claim in any such proceeding) before Payee is entitled to receive payment on
account of this Subordinated Note, and to that end, any payment or distribution
of assets of Maker of any kind or character, whether in cash, securities or
other property, in any applicable insolvency proceeding, which would otherwise
be payable to or deliverable upon or with respect to any or all indebtedness
under this Subordinated Note, is hereby assigned to and shall be paid or
delivered by the Person making such payment or delivery (whether a trustee in
bankruptcy, a receiver, custodian or liquidating trustee or otherwise) directly
to the Funding Agent for application to, or as collateral for the payment of,
the Aggregate Unpaids until such Aggregate Unpaids shall have been paid in full
and satisfied.

         This Subordinated Note shall not be amended or modified except in
accordance with Section 9.1 of the Receivables Purchase Agreement. The terms of
this Subordinated Note may not be amended, waived or otherwise modified without
the prior written consent of the Funding Agent.

         This Subordinated Note may not be assigned, pledged or otherwise
transferred to any party other than Payee without the prior written consent of
the Funding Agent, and any such attempted transfer shall be void.

         This Subordinated Note is the Subordinated Note referred to in the
Receivables Purchase Agreement, which, among other things, contains provisions
for the subordination of this Subordinated Note to the rights of certain parties
under the Receivables Transfer Agreement, all upon the terms and conditions
therein specified. Capitalized terms used herein and not otherwise defined
herein shall have the meanings assigned to such terms in, or incorporated by
reference into, the Receivables Purchase Agreement.

                                       2
<PAGE>   26

         This Subordinated Note shall be governed by, and construed in
accordance with, the laws of the State of New York.

                                     MP RECEIVABLES COMPANY

                                     By:
                                        ----------------------------------------
                                     Name:
                                          --------------------------------------
                                     Title:
                                            ------------------------------------

                                       3
<PAGE>   27

                              Advances and Payments

<TABLE>
<CAPTION>
             Amount of           Payments           Unpaid Principal     Name of Person
   Date       Advance       Principal/Interest       Balance of Note     Making Notation
   ----      ---------      ------------------      ----------------     ---------------
   <S>       <C>            <C>                     <C>                  <C>

</TABLE>

                                       4<PAGE>   1
                                                                   EXHIBIT 10.62

                     AMENDMENT NO. 21 TO THE LOAN DOCUMENTS

         AMENDMENT NO. 21 TO THE LOAN DOCUMENTS dated as of January 23, 2001 to
the Amended and Restated Credit Agreement dated as of June 9, 1998 (as amended
and otherwise modified by Amendment and Waiver No. 1 to the Loan Documents dated
as of December 4, 1998, Amendment No. 2 to the Loan Documents dated as of
January 13, 1999, Amendment No. 3 to the Loan Documents dated as of February 9,
1999, Amendment and Waiver No. 4 to the Loan Documents dated as of March 18,
1999, Amendment and Waiver No. 5 to the Loan Documents dated as of April 1,
1999, Amendment No. 6 to the Loan Documents dated as of April 14, 1999,
Amendment No. 7 to the Loan Documents dated as of June 29, 1999, Amendment No. 8
to the Loan Documents dated as of August 2, 1999, Amendment No. 9 to the Loan
Documents dated as of August 16, 1999, Amendment No. 10 to the Loan Documents
dated as of August 23, 1999, Amendment No. 11 to the Loan Documents dated as of
August 30, 1999, Amendment No. 12 to the Loan Documents dated as of September
14, 1999, Amendment No. 13 to the Loan Documents dated as of November 5, 1999,
Amendment No. 14 to the Loan Documents dated as of December 16, 1999, Amendment
No. 15 to the Loan Documents dated as of January 20, 2000, Amendment No. 16 to
the Loan Documents dated as of February 3, 2000, Amendment No. 17 to the Loan
Documents dated as of April 10, 2000, Amendment No. 18 to the Loan Documents
dated as of May 2, 2000, Amendment No. 19 to the Loan Documents dated as of
August 28, 2000, and Amendment No. 20 to the Loan Documents dated as of August
31, 2000, the "CREDIT AGREEMENT") among Caremark Rx, Inc. (formerly known as
MedPartners, Inc.), a Delaware corporation (the "BORROWER"), the Lenders party
thereto, Bank of America, N.A. (formerly NationsBank, N.A.; "BOFA"), as the
Initial Issuing Bank and the Swing Line Bank thereunder, Credit Lyonnais New
York Branch, The First National Bank of Chicago and Morgan Guaranty Trust
Company of New York, as the Syndication Agents therefor, Banc of America
Securities LLC (formerly NationsBanc Montgomery Securities LLC), as the Arranger
therefor, and BofA, as the Administrative Agent for the Lender Parties
thereunder. Capitalized terms not otherwise defined in this Amendment have the
same meanings as specified therefor in the Credit Agreement.

                             PRELIMINARY STATEMENTS

         (1)      The Borrower has requested that the Lender Parties agree to
amend the Credit Agreement as provided herein in order to amend the definition
of Consolidated EBITDA and the Leverage Ratio.

         (2)      The Lender Parties have indicated their willingness to agree
to amend the Credit Agreement.

         NOW, THEREFORE, in consideration of the premises and of the mutual
covenants and agreements contained herein and in the Loan Documents, the parties
hereto hereby agree as follows:

         SECTION 1. Amendments of Certain Provisions of the Credit Agreement.
The Credit Agreement is, upon the occurrence of the Amendment Effective Date (as
hereinafter defined), hereby amended as follows:

         (a)      The definition of "Consolidated EBITDA" is amended to (1)
delete the word "and" at the end of subclause (v) thereof and (2) to add new
language immediately after the word "period" at the end of subclause (vi)
thereof to read as follows:

<PAGE>   2

         ", and (vii) all charges for discontinued operations not in excess of
         $70,000,000 recorded as a result of the bankruptcy proceedings of KPC
         Medical Management, Inc. and its affiliated corporations and medical
         groups".

                    (b)      Section 5.04(a) is amended to delete the ratio
         "5.00:1" therein and to substitute therefor the ratio "5.25:1".

         SECTION 2. Conditions Precedent to the Effectiveness of this Amendment.
This Amendment shall become effective as of the date hereof if on or before
January 23, 2001, each of the following conditions have been satisfied (such
date when the conditions are satisfied being the "AMENDMENT EFFECTIVE DATE"):

         (a)      The Administrative Agent shall have received on or before
5:00 p.m. (Charlotte time) on January 23, 2001, (i) counterparts of this
Amendment executed by the Borrower and the Required Lenders or, as to any of the
Lender Parties, advice satisfactory to the Administrative Agent that such Lender
Party has executed this Amendment and (ii) counterparts of the Consent attached
hereto executed and delivered by each of the Loan Parties (other than the
Borrower).

         (b)      The representations and warranties set forth in each of the
Loan Documents shall be correct in all material respects on and as of the
Amendment Effective Date, before and after giving effect to this Amendment, as
though made on and as of such date (except (i) for any such representation and
warranty that, by its terms, refers to a specific date other than the Amendment
Effective Date, in which case as of such specific date, (ii) that the
Consolidated financial statements of the Borrower and its Subsidiaries referred
to in Sections 4.01(f) and 4.01(g) of the Credit Agreement shall be deemed to
refer to the Consolidated financial statements of the Borrower and its
Subsidiaries comprising part of the Required Financial Information most recently
delivered to the Administrative Agent and the Lender Parties pursuant to
Sections 5.03(b) and 5.03(c), respectively, on or prior to the Amendment
Effective Date, and (iii) that the forecasted Consolidated financial statements
of the Borrower and its Subsidiaries referred to in Section 4.01(h) of the
Credit Agreement shall be deemed to refer to the forecasted Consolidated
financial statements of the Borrower and its Subsidiaries most recently
delivered to the Administrative Agent and the Lender Parties prior to the
Amendment Effective Date).

         (c)      No event shall have occurred and be continuing, or shall
result from the effectiveness of this Amendment, that constitutes a Default.

         (d)      All of the reasonable fees and expenses of the Administrative
Agent and the Arranger (including the reasonable fees and expenses of counsel
for the Administrative Agent) due and payable on or before the Amendment
Effective Date shall have been paid in full.

         The effectiveness of this Amendment is further conditioned upon the
accuracy of all of the factual matters described herein. This Amendment is
subject to the provisions of Section 8.01 of the Credit Agreement.

         SECTION 3. Reference to and Effect on the Loan Documents. (a) On and
after the Amendment Effective Date, each reference in the Credit Agreement to
"this Agreement," "hereunder," "hereof" or words of like import referring to the
Credit Agreement, and each reference in the Notes and each of the other Loan
Documents to "the Credit Agreement," "thereunder," "thereof" or words of like
import referring to the Credit Agreement, shall mean and be a reference to the
Credit Agreement, as amended by this Amendment.

                                       2
<PAGE>   3

         (b)      The Credit Agreement, as amended by the amendments
specifically provided above in Section 1, is and shall continue to be in full
force and effect and is hereby in all respects ratified and confirmed. The
execution, delivery and effectiveness of this Amendment shall not, except as
expressly provided herein, operate as a waiver of any right, power or remedy of
any of the Guaranteed Parties or the Administrative Agent under any of the Loan
Documents, or constitute a waiver of any provision of any of the Loan Documents.

         SECTION 4. Costs and Expenses. The Borrower hereby agrees to pay, upon
demand, all of the reasonable costs and expenses of the Administrative Agent and
the Arranger (including, without limitation, the reasonable fees and expenses of
counsel for the Administrative Agent ) in connection with the preparation,
execution, delivery, administration, modification and amendment of this
Amendment and all of the agreements, instruments and other documents delivered
or to be delivered in connection herewith, all in accordance with the terms of
Section 8.04 of the Credit Agreement.

         SECTION 5. Execution in Counterparts. This Amendment may be executed in
any number of counterparts and by different parties hereto in separate
counterparts, each of which when so executed shall be deemed to be an original
and all of which taken together shall constitute one and the same agreement.
Delivery of an executed counterpart of a signature page to this Amendment by
telecopier shall be effective as delivery of a manually executed counterpart of
this Amendment.

         SECTION 6. Governing Law. This Amendment shall be governed by, and
construed in accordance with, the laws of the State of New York.

                                       3
<PAGE>   4

         IN WITNESS WHEREOF, the parties hereto have caused this Amendment to be
executed by their respective officers, thereunto duly authorized, as of the date
first written above.

                           THE BORROWER

                           CAREMARK RX, INC.
                           (formerly known as MEDPARTNERS, INC.)

                           By       /s/ James H. Dickerson, Jr.
                               ---------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & COO

                           THE ADMINISTRATIVE AGENT

                           BANK OF AMERICA, N.A.

                           By       /s/ Richard L. Nichols, Jr.
                               ---------------------------------------------
                               Name:  Richard L. Nichols, Jr.
                               Title: Managing Director

                                4
<PAGE>   5

                           THE LENDER PARTIES

                           BANK OF AMERICA, N.A., as a Lender,
                           the Swing Line Bank and the Issuing Bank

                           By       /s/ Richard L. Nichols, Jr.
                               ---------------------------------------------
                               Name:  Richard L. Nichols, Jr.
                               Title: Managing Director

                           AMSOUTH BANK

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           THE CHASE MANHATTAN BANK

                           By       /s/ Dawn Lee Lum
                               ---------------------------------------------
                               Name:  Dawn Lee Lum
                               Title: Vice President

                           CITIBANK, N.A.

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           CREDIT LYONNAIS NEW YORK BRANCH

                           By       /s/ Charles H. Heidsiech
                               ---------------------------------------------
                               Name:  Charles H. Heidsiech
                               Title: Senior Vice President

                           DEBT STRATEGIES FUND, INC.

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                                5
<PAGE>   6

                           BANK ONE, NA (f/k/a THE FIRST NATIONAL
                           BANK OF CHICAGO)

                           By       /s/ L. Richard Schiller
                               ---------------------------------------------
                               Name:  L. Richard Schiller
                               Title: Vice President

                           FIRST UNION NATIONAL BANK

                           By       /s/ Keith S. Law
                               ---------------------------------------------
                               Name:  Keith S. Law
                               Title: Vice President

                           FLOATING RATE PORTFOLIO
                           BY: INVESCO Senior Secured Management, Inc.,
                               as attorney in fact

                           By       /s/ Gregory Stoeckle
                               ---------------------------------------------
                               Name:  Gregory Stoeckle
                               Title: Authorized Signatory

                           KZH HIGHLAND-2 LLC

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           MERRILL LYNCH DEBT STRATEGIES
                               PORTFOLIO, INC.
                           BY: MERRILL LYNCH ASSET
                               MANAGEMENT L.P., as Investment Advisor

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                                6
<PAGE>   7

                           MERRILL LYNCH GLOBAL INVESTMENT
                               SERIES:  INCOME STRATEGIES PORTFOLIO
                           BY: MERRILL LYNCH ASSET MANAGEMENT, L.P.,
                               as Investment Advisor

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           MERRILL LYNCH SENIOR FLOATING
                               RATE FUND, INC.

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           MERRILL LYNCH PRIME RATE PORTFOLIO
                           BY: MERRILL LYNCH ASSET
                               MANAGEMENT, L.P., as Investment Advisor

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           ML CBO IV (CAYMAN) LTD.
                           BY: HIGHLAND CAPITAL MANAGEMENT L.P.,
                               as Collateral Manager

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           ML CLO XX PILGRIM AMERICA
                               (CAYMAN) LTD.
                           BY: PILGRIM INVESTMENTS, INC.,
                               as Investment Manager

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                                7
<PAGE>   8

                           MORGAN GUARANTY TRUST COMPANY
                               OF NEW YORK

                           By       /s/ Anna Marie Fallon
                               ---------------------------------------------
                               Name:  Anna Marie Fallon
                               Title: Vice President

                           PAM CAPITAL FUNDING, LP
                           BY: HIGHLAND CAPITAL MANAGEMENT, L.P.,
                               as Collateral Manager

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           PAMCO CAYMAN, LTD.
                           BY: HIGHLAND CAPITAL  MANAGEMENT, L.P.,
                               as Collateral Manager

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           PILGRIM PRIME RATE TRUST
                           BY: PILGRIM INVESTMENTS, INC.,
                               as Investment Manager

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           SCOTIABANC INC.

                           By       /s/ Dana Maloney
                               ---------------------------------------------
                               Name:  Dana Maloney
                               Title: Relationship Manager

                                8
<PAGE>   9

                           SRV-HIGHLAND, INC.

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           STEIN ROE & FARNHAM INCORPORATED,
                               as Agent for KEYPORT LIFE INSURANCE
                               COMPANY

                           By       /s/ James R. Fellows
                               ---------------------------------------------
                               Name:  James R. Fellows
                               Title: Sr. Vice President & Portfolio Manager

                           TORONTO DOMINION (TEXAS), INC.

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           TRANSAMERICA LIFE INSURANCE AND
                                    ANNUITY CO.

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           TRANSAMERICA PREMIER HIGH YIELD FUND

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           VAN KAMPEN PRIME RATE INCOME TRUST

                           By       /s/ Darvin D. Pierce
                               ---------------------------------------------
                               Name:  Darvin D. Pierce
                               Title: Principal

                                       9
<PAGE>   10

                           VAN KAMPEN SENIOR INCOME TRUST

                           By       /s/ Darvin D. Pierce
                               ---------------------------------------------
                               Name:  Darvin D. Pierce
                               Title: Principal

                           VAN KAMPEN CLO II, LIMITED
                           BY: VAN KAMPEN MANAGEMENT, INC.,
                               as Collateral Manager

                           By       /s/ Darvin D. Pierce
                               ---------------------------------------------
                               Name:  Darvin D. Pierce
                               Title: Principal

                           WACHOVIA BANK, N.A.

                           By
                               ---------------------------------------------
                               Name:
                               Title:

                           AVALON CAPITAL LTD. II
                           BY: INVESCO Senior Secured Management, Inc., as
                               Portfolio Advisor

                           By       /s/ Gregory Stoeckle
                               ---------------------------------------------
                               Name:  Gregory Stoeckle
                               Title: Authorized Signatory

                                       10
<PAGE>   11

                CONSENT TO AMENDMENT NO. 21 TO THE LOAN DOCUMENTS

                             As of January 23, 2001

         Reference is made to Amendment No. 21 to the Loan Documents dated as of
January 23, 2001 (the "AMENDMENT") to the Amended and Restated Credit Agreement
dated as of June 9, 1998 (as amended and otherwise modified by Amendment No. 1
to the Loan Documents dated as of December 4, 1998, Amendment No. 2 to the Loan
Documents dated as of January 13, 1999, Amendment No. 3 to the Loan Documents
dated as of February 9, 1999, Amendment and Waiver No. 4 to the Loan Documents
dated as of March 18, 1999, Amendment and Waiver No. 5 to the Loan Documents
dated as of April 1, 1999, Amendment No. 6 to the Loan Documents dated as of
April 14, 1999, Amendment No. 7 to the Loan Documents dated as of June 29, 1999,
Amendment No. 8 to the Loan Documents dated as of August 2, 1999, Amendment No.
9 to the Loan Documents dated as of August 16, 1999, Amendment No. 10 to the
Loan Documents dated as of August 23, 1999, Amendment No. 11 to the Loan
Documents dated as of August 30, 1999, Amendment No. 12 to the Loan Documents
dated as of September 14, 1999, Amendment No. 13 to the Loan Documents dated as
of November 5, 1999, Amendment No. 14 to the Loan Documents dated as of December
16, 1999, Amendment No. 15 to the Loan Documents dated as of January 20, 2000,
Amendment No. 16 to the Loan Documents dated as of February 3, 2000, Amendment
No. 17 to the Loan Documents dated as of April 10, 2000, and Amendment No. 18 to
the Loan Documents dated as of May 2, 2000, and Amendment No. 19 to the Loan
Documents dated as of August 28, 2000, and Amendment No. 20 to the Loan
Documents dated as of August 31, 2000, the "CREDIT AGREEMENT") among Caremark
Rx, Inc. (formerly known as MedPartners, Inc.), a Delaware corporation, the
Lenders party thereto, Bank of America, N.A. (formerly NationsBank, N.A.), as
the Initial Issuing Bank and Swing Line Bank thereunder, Credit Lyonnais New
York Branch, The First National Bank of Chicago and Morgan Guaranty Trust
Company of New York, as the Syndication Agents therefor, Banc of America
Securities LLC (formerly NationsBanc Montgomery Securities LLC), as Arranger
therefor, and Bank of America, N.A. (formerly NationsBank, N.A.), as the
Administrative Agent for the Lender Parties thereunder. Capitalized terms not
otherwise defined herein shall have the same meanings as specified therefor in
the Credit Agreement.

         Each of the undersigned, as a guarantor under the Subsidiaries
Guarantee dated as of June 9, 1998 (as modified to the date hereof, the
"SUBSIDIARIES GUARANTEE") in favor of the Guaranteed Parties, hereby consents to
the execution and delivery of the Amendment and the performance of the Credit
Agreement, as amended thereby, and hereby confirms and agrees that,
notwithstanding the effectiveness of the Amendment, the Subsidiaries Guarantee
is, and shall continue to be, in full force and effect and is hereby in all
respects ratified and confirmed, except that each reference in the Subsidiaries
Guarantee to "the Credit Agreement," "thereunder," "thereof" or words of like
import referring to the Credit Agreement shall mean and be a reference to the
Credit Agreement, as amended by the Amendment.

         This Consent may be executed in any number of counterparts and by
different parties hereto in separate counterparts, each of which when so
executed shall be deemed to be an original and all of which taken together shall
constitute one and the same Consent. Delivery of an executed counterpart of a
signature page to this Consent by telecopier shall be effective as delivery of a
manually executed counterpart of this Consent.

                                       11
<PAGE>   12

         This Consent shall be governed by, and construed in accordance with,
the laws of the State of New York.

                                       12
<PAGE>   13

                      MEDPARTNERS ACQUISITION CORPORATION

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           MEDPARTNERS AVIATION, INC.

                           By       /s/ Sara J. Finley
                               -------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           MEDPARTNERS EAST, INC.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           MEDPARTNERS INTEGRATED NETWORK-
                           CHANDLER, INC.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           MEDPARTNERS PROFESSIONAL
                           MANAGEMENT CORPORATION

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           HEALTHWAYS, INC.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                                       13
<PAGE>   14

                           BAY AREA PRACTICE MANAGEMENT
                           GROUP, INC.

                           By       /s/ Sara J. Finley
                               -------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           CHS MANAGEMENT, INC.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           CAREMARK INTERNATIONAL INC.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           CAREMARK INC.

                           By       /s/ Sara J. Finley
                               -------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           By       /s/ Leisa S. Kizer
                               -------------------------------------------------
                               Name:  Leisa Kizer
                               Title: Treasurer

                                       14
<PAGE>   15

                           PRESCRIPTION HEALTH SERVICES, INC.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           By       /s/ Sara J. Finley
                               -------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           CAREMARK INTERNATIONAL HOLDINGS INC.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           MEDPARTNERS PHYSICIAN SERVICES INC.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           FRIENDLY HILLS HEALTHCARE
                           NETWORK INC.

                           By       /s/ Sara J. Finley
                               -------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           MEDPARTNERS NSC LTD.

                           By       /s/ James H. Dickerson, Jr.
                               -------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                                       15
<PAGE>   16

                           MEDPARTNERS ADMINISTRATIVE
                           SERVICES, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           MEDPARTNERS MANAGED CARE, INC.

                           By       /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           ACUTE CARE MEDICAL MANAGEMENT, INC.

                           By       /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           BGS HEALTHCARE, INC.

                           By       /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           HOME HEALTH AGENCY OF GREATER MIAMI, INC.

                           By       /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           PACIFIC MEDICAL GROUP, INC.

                           By       /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                                       16
<PAGE>   17

                           PACIFIC PHYSICIAN SERVICES, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           PPS EAST, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           PPS NORTH CAROLINA MEDICAL
                           MANAGEMENT, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           PPS RIVERSIDE DIVISION ACQUISITION
                           AND MANAGEMENT CORP. I

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           PPS VALLEY MANAGEMENT, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           By       /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                                       17
<PAGE>   18

                           PACIFIC PHYSICIAN SERVICES
                           ARIZONA, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           PACIFIC PHYSICIAN SERVICES
                           NEVADA, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           PHYSICIANS' HOSPITAL MANAGEMENT
                           CORPORATION

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           RELIANT HEALTHCARE SYSTEMS, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                            By      /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Vice President & Secretary

                           MEDPARTNERS/TALBERT MEDICAL
                           MANAGEMENT CORPORATION

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                                       18
<PAGE>   19

                           TALBERT MEDICAL MANAGEMENT
                           CORPORATION

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           TALBERT HEALTH SERVICES
                           CORPORATION

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer

                           MEDPARTNERS ADMINISTRATION, L.P.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Executive Vice President &
                                      Treasurer  of Caremark Rx, Inc.,
                                      the General  Partner

                                       19
<PAGE>   20

                           MEDPARTNERS PHYSICIAN
                           MANAGEMENT, L.P.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Executive Vice President of
                                      Caremark Rx, Inc., the General
                                      Partner

                           MED TENNESSEE, INC.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: President & Treasurer

                           MEDPARTNERS PHYSICIAN SERVICES OF
                           ILLINOIS L.L.C.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Vice President & Treasurer of
                                      North Suburban Clinic, Ltd.,
                                      a Member

                           CERRITOS INVESTMENT GROUP

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Executive Vice President & Chief
                                      Financial Officer of Caremark Rx,
                                      Inc., a Partner

                           By      /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Corporate Secretary of
                                      Caremark Rx, Inc., a Partner

                                       20
<PAGE>   21

                           CERRITOS INVESTMENT GROUP II

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Executive Vice President & Chief
                                      Financial Officer of Caremark Rx,
                                      Inc., a Partner

                           By       /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Corporate Secretary of
                                      Caremark Rx, Inc., a Partner

                           5000 AIRPORT PLAZA, L.P.

                           By       /s/ James H. Dickerson, Jr.
                               ------------------------------------------------
                               Name:  James H. Dickerson, Jr.
                               Title: Executive Vice President & Chief
                                      Financial Officer of Caremark Rx,
                                      Inc. the General Partner

                           By       /s/ Sara J. Finley
                               ------------------------------------------------
                               Name:  Sara J. Finley
                               Title: Corporate Secretary of
                                      Caremark Rx, Inc.,
                                      the General Partner

                                       21

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