Document:

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                                                              Exhibit 10.10
                                                              -------------

                                     FORM OF

                           E-HEALTH SERVICES AGREEMENT

                                     BETWEEN

                                MERCK & CO., INC.

                                       AND

                           MEDCOHEALTH SOLUTIONS, INC.

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                           E-HEALTH SERVICES AGREEMENT

     THIS E-HEALTH SERVICES AGREEMENT (this "Agreement"), dated as of
_______, 2002, is entered into between Merck & Co., Inc., a New Jersey
corporation ("Merck"), and MedcoHealth Solutions, Inc., a Delaware
corporation ("Medco"). Merck and Medco are each referred to individually as
a "Party," and collectively as the "Parties".

                                    RECITALS

     A. Medco has developed and currently operates through its web site at
www.merckmedco.com certain Internet based, interactive web pages that provide
targeted health information to Medco and non-Medco members in four eHealth
Centers including Cardiovascular (Hypertension, High Cholesterol), Arthritis,
Women's Health (Osteoporosis) and Wellness (Vaccines) (the "eHealth Centers").

     B. Through the eHealth Centers, Medco also tracks patient usage and
behavior, based in part on patient self-reporting, and provides to Merck
periodic reports containing aggregated information concerning patient
utilization and behavior modification.

     C. The Parties desire to continue to exchange information under the
terms and conditions of this Agreement. Accordingly, the Parties agree as
follows:

                                    ARTICLE I

                                   DEFINITIONS

     For the purpose of this Agreement, the following capitalized terms shall
have the following meanings:

     1.1 Confidential Disclosure Agreement. "Confidential Disclosure
Agreement" shall mean the Confidential Disclosure Agreement, dated as of
the date hereof, between the Parties.

     1.2 Current eHealth Centers. "Current eHealth Centers" shall have the

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meaning set forth in Section 2.1.

     1.3 Effective Date. "Effective Date" shall mean the date that this
Agreement is executed by the Parties.

     1.4 eHealth Centers. "eHealth Centers" shall have the meaning set forth in
Recital A and shall include "Current eHealth Centers".

     1.5 eHealth Data Services. "eHealth Data Services" shall mean the data
services provided by Medco to Merck in connection with the eHealth Centers as
set forth in Article II.

     1.6 Indemnification Agreement. "Indemnification Agreement" shall mean
that certain Indemnification and Insurance Matters Agreement, dated as of
the date hereof, between the Parties.

     1.7 Intellectual Property. "Intellectual Property" shall mean (a) all
inventions (whether patentable or unpatentable and whether or not reduced to
practice), all improvements thereon, and all patents, patent applications and
patent disclosures, together with all reissuances, continuations,
continuations-in-part, revisions, extensions and reexaminations thereof, (b) all
trademarks, service marks, trade dress, logos, trade names, domain names, and
corporate names, together with all translations, adaptations, derivations and
combinations thereof and including all goodwill associated therewith, and all
applications, registrations and renewals in connection therewith, (c) all
copyrights and all applications, registrations and renewals in connection
therewith, (d) all trade secrets and confidential business information
(including ideas, research and development, know-how, formulas, compositions,
manufacturing and production processes and techniques, methods, schematics,
technology, technical data, designs, drawings, flowcharts, block diagrams,
specifications, customer and supplier lists, pricing and cost information and
business and marketing plans and proposals), (e) all computer software
(including data and related documentation), (f) all other proprietary rights,
(g) all copies and tangible embodiments of the foregoing categories of
intellectual property listed in subsections (a) through (f) (in whatever form or
medium), and (h) all licenses, sublicenses, agreements, or permissions related
to the foregoing categories of intellectual property listed in subsections (a)
through (g).

     1.8 Person. "Person" means any individual, corporation, association,
partnership (general or limited), joint venture, trust, estate, limited
liability company, or other legal entity or organization.

     1.9 Registered Members. "Registered Members" shall mean individuals
who have registered on merckmedco.com and are members of a Medco health
plan.

     1.10 Registered Non-Members. "Registered Non-Members" shall mean
individuals who have registered on merckmedco.com but are not members of a Medco
health plan.

     1.11 Subsidiary. "Subsidiary" of either Party means a corporation or other
organization whether incorporated or unincorporated, of which at least a
majority of the securities or interests having by the terms thereof ordinary
voting power to elect at least a majority of the board of directors or others
performing similar functions with respect to such corporation or other
organization is directly or indirectly owned or controlled by such Party or by
any one or more of its Subsidiaries, or by such Party and one or more of its
Subsidiaries. For purposes of this Agreement, neither Medco nor any of its
Subsidiaries shall be deemed to be a Subsidiary of Merck.

     1.12 Term. The "Term" of this Agreement is set forth in Section 5.1.

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     1.13 Termination Date. "Termination Date" shall mean the date that the
Agreement is terminated pursuant to Article V.

                                   ARTICLE II

                        DATA AND SERVICES TO BE PROVIDED

     2.1 Provision of eHealth Centers. Among the eHealth Centers that Medco
currently operates are a Women's Health (Osteoporosis) Center; an Arthritis
Center; a Cardiovascular Center (Hypertension and High Cholesterol); and a
Wellness (Vaccines) Center. During the Term of this Agreement, Medco shall
continue the operation of the Women's Health (Osteoporosis), Arthritis,
Cardiovascular (Hypertension and High Cholesterol), and Wellness (Vaccines)
eHealth Centers (the "Current eHealth Centers"), and ensure that each such
eHealth Center provides, at minimum, the functions set forth in Schedule 2.1.

     2.2 New eHealth Centers. In the event that (a) Medco develops additional
eHealth Centers, Merck shall have the right of first refusal to invest in such a
center. The scope and terms of any such a project will be determined by Medco at
its sole discretion. Medco may make Merck aware of any such intentions to
develop a center at any point in time (through written communication); Merck
will respond to Medco in writing regarding an interest in investing within 30
calendar days or it will be assumed that no current interest exists and Medco's
obligations under Section 2.2 have been completed.

     2.3 eHealth Data Services. Medco shall provide to Merck the reports listed
in Schedule 2.3 concerning the success of the eHealth Centers in attracting
Registered Members and influencing their behavior.

     2.4 Medco Control Group Data. Medco shall, where feasible, report on the
impact of the eHealth Centers using well-matched statistically significant
control groups to compare the behavior of patients who use the eHealth Centers
against the behavior of similar patients who did not use the eHealth Centers.

     2.5 Clarifying and Backup Data. Upon reasonable request by Merck, Medco
shall provide clarifications to and backup data for the reports and statistics
specified in Schedule 2.3, subject to Medco's duty to safeguard patient
information under Article IX of this Agreement.

     2.6 Merck Input Regarding Content and Data Collection. Merck shall have the
right, at least once in each calendar quarter, to contribute approved
non-promotional educational materials (patient or physician focused) for
consideration for inclusion in the eHealth Centers. The inclusion or use in the
eHealth Centers of the material provided by Merck shall be at the discretion of
Medco. Merck shall have the right, within reason, to request additional types of
information be gathered from eHealth users and analyses be performed on data
collected from or on eHealth Center users. Medco shall use its best efforts to
accommodate Merck's suggestions regarding these additional data and analyses,
assuming they are not prohibited by law, regulation, or third-party contractual
limitation, and that they are not operationally or methodologically
impracticable. In the event that Medco declines to follow such suggestions,
Medco shall provide Merck with a good faith reason for its decision.

     2.7 Control Over Content. Medco shall have final control over the
content of the eHealth Centers and all other health information presented
on merckmedco.com.

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                                   ARTICLE III

                                  COMPENSATION

     3.1 Fees for Services. During the Term of this Agreement, Merck shall pay
Medco fees as shown in Schedule 3.1.A, payable in equal installments on a
quarterly basis in advance.

     3.2 Invoices. Medco shall provide Merck with a quarterly invoice reflecting
the fees payable for the upcoming quarter.

                                   ARTICLE IV

                               GENERAL OBLIGATIONS

     4.1 Performance Parameters. To the extent that performance parameters or
specifications are established in this Agreement, Medco shall perform its
obligations in accordance with those parameters and specifications. To the
extent that specific performance parameters are not specifically enumerated in
this Agreement, Medco shall use reasonable commercial efforts to provide the
eHealth Data Services in the same manner, and with at least the same level of
diligence, as Medco has used in the provision of similar services to Merck in
the 12 months prior to the Effective Date.

                                    ARTICLE V

                              TERM AND TERMINATION

     5.1 Term. The Term of this Agreement shall commence on the Effective Date
and continue through and including December 31, 2004 except that with respect to
the Wellness (Vaccines) eHealth Center, the Term of this Agreement shall end on
December 31, 2002, and Merck shall have an annual right to renew, at its sole
option (exercised by November 1 of each year), this Agreement for additional one
year periods for the years 2003, 2004 and 2005.

     5.2 Termination. Merck may terminate this Agreement for any reason or no
reason, effective January 1, 2003 or at any later date, upon at least 90 days
prior written notice to Medco. Effective January 1, 2003 or at any later date,
Merck may also terminate this Agreement in part, by eliminating its request for
eHealth Data Services with respect to one or more of the eHealth Centers, for
any reason or no reason, upon at least 90 days prior written notice to Medco. In
the event that Merck terminates this Agreement in part as to one or more of the
Women's Health (Osteoporosis) Center, the Arthritis Center or the Cardiovascular
Center (Hypertension and High Cholesterol), the fees payable under Schedule
3.1.A.1 shall be reduced by one third per year for each eHealth Center for which
services are terminated, and also reduced pro rata for the number of months left
in the year if the services are terminated mid-year. In the event that Merck
terminates this Agreement mid-year as to the Wellness (Vaccines) eHealth Center,
the fees payable under Schedule 3.1.A.2 shall be reduced pro rata for the number
of months left in the year.

     5.3 Effect of Termination. Termination of this Agreement shall relieve and
release the Parties from any further liabilities and obligations hereunder with
respect to the services terminated except any liabilities or obligations that
accrued prior to the effective date of such termination and except as provided
in Section 5.4.

     5.4 Survival. Articles VI, VIII and XI shall survive termination of
this Agreement.

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                                   ARTICLE VI

                                 CONFIDENTIALITY

     6.1 The terms of the Confidential Disclosure Agreement shall apply to any
Confidential Information (as defined in Section 1.2 of that agreement) of either
Party provided to the other Party for the purpose of providing Services under
this Agreement.

                                   ARTICLE VII

                        RELATIONSHIP BETWEEN THE PARTIES

     7.1 The relationship between the Parties established under this Agreement
is that of independent contractors and neither Party is an employee, agent,
partner, or joint venturer of or with the other.

                                  ARTICLE VIII

                              INTELLECTUAL PROPERTY

     8.1 Merck shall retain all right, title and interest in the materials and
methodologies that it provides to Medco for use in, on, or in connection with
the eHealth Centers. However, Merck grants to Medco a perpetual, non-exclusive
and non-royalty-bearing license to use those suggestions, materials and
methodologies in the design and content of the eHealth Centers, subject to
Section 6.1 of this Agreement.

     8.2 Medco shall retain all right, title and interest in the compilation of
data and reports to be provided to Merck under this Agreement, and in the data,
analyses, and methodologies used to produce Data Services. However, Medco grants
to Merck a perpetual, non-exclusive and non-royalty bearing license to use those
data, reports, and analyses, subject to Section 6.1 of this Agreement.

     8.3 The Parties have the right to publish, either individually or jointly
with one another, the compilation of data and analyses to be provided to Merck
under this Agreement. If either Party intends to publish those data and
analyses, it shall give prior notice to the other Party of its intent to do so,
explaining how, when and where it intends to publish the information, and the
intended target audience. In the event of such publication, neither Party shall
have a duty to account to the other Party for the financial proceeds (if any)
resulting from the publication.

     8.4 As between the Parties, Medco shall retain all right, title and
interest in the content of the eHealth Centers, except to the extent that such
content is provided to Medco by Merck.

                                   ARTICLE IX

                                 PATIENT PRIVACY

     9.1 Medco represents and warrants that it will perform all of its duties
under this Agreement in compliance with all applicable federal, state, local and
foreign laws and regulations and licensing requirements, including but not
limited to those related to patient notification, authorization and consent,
privacy of medical records and medical information. By way of example, Medco is
required under the Standards adopted pursuant to the Health Insurance
Portability and Accountability Act of 1996, either directly as a covered entity
or in its role as a business associate of its health plan clients, to assure
that protected health information (all as defined in such Standards) is used or
disclosed only in accordance with such Standards.

     9.2 Medco may collect and/or generate information that identifies or could
be used to identify an individual, including names, addresses, medical histories
and test results ("individually identifiable information") directly from
patients, consumers, prospective clinical trial

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subjects, and other individuals. Medco agrees to handle individually
identifiable information in compliance with applicable law.

                                    ARTICLE X

                         REPRESENTATIONS AND WARRANTIES

     10.1 Intellectual Property. Medco represents and warrants that it has the
right to operate the eHealth Centers and provide the eHealth Data Services, and
that operation of the eHealth Centers and provision of the eHealth Data Services
shall not infringe the Intellectual Property rights of any third party.

                                   ARTICLE XI

                                 INDEMNIFICATION

     11.1 Indemnification. Medco shall indemnify and hold harmless the Merck
Indemnitees (as defined in the Indemnification Agreement) in respect of all
Liabilities (as defined in the Indemnification Agreement) related to, arising
from, asserted against or associated with Medco's providing services hereunder.
Such indemnification obligation shall be a Medco Liability for purposes of the
Indemnification Agreement, and the provisions of Article I thereof with respect
to indemnification shall govern with respect thereto. Merck shall indemnify and
hold harmless the Medco Indemnitees (as defined in the Indemnification
Agreement) in respect of all Liabilities (as defined in the Indemnification
Agreement) related to or arising from Merck's provision of content under Section
2.6 of this Agreement. Such indemnification obligation shall be a Merck
Liability for purposes of the Indemnification Agreement, and the provisions of
Article I thereof with respect to indemnification shall govern with respect
thereto.

     11.2 Additional Indemnification. In addition to, and not in limitation of,
the indemnification provided under Section 11.1, Medco shall indemnify and hold
harmless the Merck Indemnitees from and against any and all loss, damage or
expense, including reasonable attorneys' fees, that Merck may sustain or incur
as a result of any claim, suit or proceeding arising out of or in connection
with: (1) any actual or alleged negligent or willful act or omission of Medco,
or any of its employees, agents or subcontractors; (2) any actual or alleged
violation by Medco, or any of its employees, agents or subcontractors of any
law, statute, ordinance or regulation; (3) any failure to obtain necessary
consents, authorizations, approvals or releases for use of the data and/or
provision of the services hereunder and any violation or alleged violation of
any third party or individual's privacy right by the data and/or services
provided to Merck under this Agreement; (4) any infringement or alleged
infringement by the eHealth Centers and/or eHealth Data Services provided to
Merck under this Agreement upon any Intellectual Property rights of any third
party; or (5) any failure to perform any obligation under this Agreement. Such
indemnification obligation shall be a Medco Liability for purposes of the
Indemnification Agreement, and the provisions of Article I thereof with respect
to indemnification shall govern with respect thereto.

                                   ARTICLE XII

                               DISPUTE RESOLUTION

     12.1 Any dispute, controversy or claim arising between the Parties relating
to the interpretation or performance of this Agreement shall be resolved in
accordance with the provisions of Article III of the Indemnification Agreement.

     12.2 Injunctive Relief. Notwithstanding the provisions of Section 12.1,

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Medco acknowledges that any violation of Article(s) II, VI and/or VIII of this
Agreement will cause Merck immediate and irreparable harm that monetary damages
cannot adequately remedy. The parties agree that, upon any actual or impending
violation of Article(s) II, VI and/or VIII of this Agreement, in addition to any
money damages or other legal remedy that Merck may have, Merck shall also be
entitled to equitable relief, including injunctive relief and specific
performance (and Medco shall not plead in defense thereto that there would be an
adequate remedy at law), without bond or proof of damages. Such equitable relief
may be sought in an arbitration proceeding pursuant to Section 3.1(c) of the
Indemnification Agreement (without first complying with the negotiation
provisions of Section 3.1(a) thereof) or in a court, subject to Section 14.2 of
this Agreement. In the event of litigation relating to this Agreement, if a
court of competent jurisdiction determines that Medco has breached Article(s)
II, VI and/or VIII of this Agreement, Medco shall be liable and pay to Merck the
reasonable legal fees and costs incurred in connection with such litigation,
including any appeal from such litigation.

     12.3 Limitation on Damages. In the event of a breach of this Agreement, the
damages (if any) payable by either Party shall not exceed the total annual
payments due under the Agreement for its entire Term as set forth in Schedule
3.1.A.

                                  ARTICLE XIII

                                  FORCE MAJEURE

     13.1 Neither Party shall be deemed to have breached this Agreement or to
have failed or delayed in the performance of all or any portion of its
obligations under this Agreement if such Party is prevented from doing so by a
cause or causes beyond its control, provided that such Party is using reasonable
commercial efforts to remedy its non-performance or to arrange for appropriate
alternative methods of performance. Without limiting the generality of the
foregoing, such causes include acts of God or the public enemy, fires, floods,
storms, earthquakes, locusts, tornadoes ("twisters"), mudslides, riots,
terrorism, strikes, lock-outs, wars and war-operations, restraints of government
power or communication line failure or other circumstances beyond such Party's
control, or by reason of the judgment, ruling or order of any court or agency of
competent jurisdiction or change of law or regulation subsequent to the
execution of this Agreement. If either Party is affected by a force majeure
event, such party shall, within 10 days of its occurrence, give notice to the
other Party stating the nature of the event, its anticipated duration and any
action being taken to avoid or minimize its effect. The suspension of
performance shall be of no greater scope and no longer duration than is required
and the non-performing Party shall use its best efforts to remedy its inability
to perform.

     13.2 If either Party's performance under this Agreement is suspended
pursuant to Section 13.1, the other Party's obligations (except for those
covered by Articles VI, VIII and XI) shall be suspended for the same period of
time. If Medco is unable substantially to perform its obligations under this
Agreement for more than 5 business days by reason of an act covered by Section
13.1, the fees payable by Merck shall be reduced pro rata for each additional
calendar day that Medco's non-performance continues. If Medco's suspension of
services continues for more than 30 days, Merck shall have the right to
terminate this Agreement on 7 days notice.

                                   ARTICLE XIV

                                  MISCELLANEOUS

     14.1 Entire Agreement. This Agreement, the Schedules, and any other
agreements specifically referred to in this Agreement constitute the entire

<PAGE>

agreement between the Parties with respect to the subject matter of this
Agreement and shall supersede all prior or contemporaneous written or oral
agreements or understandings with respect to the same subject matter.

     14.2 Governing Law; Forum. This Agreement shall be construed in accordance
with, and all Disputes hereunder shall be governed by, the procedural (except to
the extent inconsistent with the procedures set forth in Article III of the
Indemnification Agreement) and substantive laws of the State of New York as to
all matters regardless of the laws that might otherwise govern under principles
of conflicts of laws applicable thereto. Under no circumstances may any party
seek or be awarded punitive damages under this Agreement. Any state court
sitting in New York county, New York and/or the United States District Court for
the Southern District of New York shall have exclusive jurisdiction and venue,
and each party hereto hereby submits to such jurisdiction and venue and
irrevocably waives, to the fullest extent permitted by applicable law, any
objection it may now or hereafter have to such jurisdiction or the laying of
such venue over any Disputes between the parties that are permitted to be
brought in a court, or the enforcement of any decision of an arbitrator,
pursuant to Article III of the Indemnification Agreement. Each of the parties
hereby irrevocably waives any right to a jury trial with respect to a Dispute.

     14.3 Descriptive Headings. The headings contained in this Agreement,
including its Schedules and table of contents, are for reference purposes only
and shall not affect in any way the meaning or interpretation of this Agreement.
Any capitalized term used in any Schedule but not otherwise defined therein,
shall have the meaning assigned to such term in this Agreement. When a reference
is made in this Agreement to an Article or a Section, such reference shall be to
an Article or Section of this Agreement unless otherwise indicated.

     14.4 Notices. All notices and other communications required or permitted to
be given by either Party pursuant to the terms of this Agreement shall be in
writing to and shall be deemed to have been duly given when delivered in person,
by express or overnight mail delivery by a nationally recognized courier
(delivery charges prepaid), or by registered or certified mail (postage prepaid,
return receipt requested), as follows:

          if to Merck:

                 Merck & Co., Inc.
                 One Merck Drive
                 P.O. Box 100
                 Whitehouse Station, New Jersey 08889
                 Attention: General Counsel

          if to Medco:

                MedcoHealth Solutions, Inc.
                100 Parsons Pond Road
                Franklin Lakes, New Jersey  07417
                Attention: General Counsel

or to such other address as the Party to whom notice is given may have
previously furnished to the other in writing in the manner set forth above. All
notices and other communication shall be deemed to have been given and received
on the date of actual delivery.

     14.5 Nonassignability; Third-Party Beneficiaries. Except as otherwise
permitted hereby, neither Party may, directly or indirectly, in whole or in
part, whether by operation of law or otherwise, assign or transfer this
Agreement or its rights hereunder, without the other's prior written consent
and, except as otherwise permitted hereby, any attempted assignment, transfer or
delegation without such prior written consent shall be voidable at the sole
option of such other party. Nevertheless, Merck may

<PAGE>

assign or transfer this agreement to a successor in interest in connection with
a corporate merger. Without limiting the foregoing, this Agreement will be
binding upon and inure to the benefit of the Parties and their permitted
successors and assigns. This Agreement, including the Schedules and the other
documents referred to herein, shall be binding upon and inure solely to the
benefit of each Party hereto and its legal representatives and successors and
assigns and nothing in this Agreement, express or implied, is intended to confer
upon any other Person any rights or remedies of any nature whatsoever under or
by reason of this Agreement.

     14.6 Severability. If any term or other provision of this Agreement is
determined by a court, administrative agency or arbitrator, by any court or in
any binding arbitration, to be invalid, illegal or incapable of being enforced
by any rule of law or public policy, all other conditions and provisions of this
Agreement will nevertheless remain in full force and effect so long as the
economic or legal substance of the transactions contemplated hereby is not
affected in any manner materially adverse to any Party. Upon such determination
that any term or other provision is invalid, illegal or incapable of being
enforced, the Parties shall negotiate in good faith to modify this Agreement so
as to effect the original intent of the Parties as closely as possible in an
acceptable manner to the end that transactions contemplated hereby are fulfilled
to the fullest extent possible.

     14.7 Failure or Indulgence not Waiver; Remedies Cumulative. No failure or
delay on the part of either Party hereto in the exercise of any right hereunder
shall impair such right or be construed to be a waiver of, or acquiescence in,
any breach of any representation, warranty or agreement herein, nor shall any
single or partial exercise of any such right preclude the further exercise
thereof or of any other right. All rights and remedies existing under this
Agreement are cumulative to, and not exclusive of, any rights or remedies
otherwise available.

     14.8 Amendment. No change or amendment will be made to this Agreement
except by an instrument in writing signed on behalf of each of the Parties
hereto.

     14.9 Counterparts. This Agreement may be executed in counterparts,
which, taken together, shall be considered to be one and the same
instrument.

     IN WITNESS WHEREOF, each of the Parties has caused this Agreement to be
executed in duplicate originals by its duly authorized representatives.

MERCK & CO., INC.                        MEDCOHEALTH SOLUTIONS, INC.

By:                                      By:
     --------------------------               ---------------------------
Name:                                    Name:
Title:                                   Title:<PAGE>

                                                                   EXHIBIT 10.11
                                                                   -------------

                                      FORM

                                       OF

                      POINT OF CARE DATA SERVICES AGREEMENT

                                     BETWEEN

                                MERCK & CO., INC.

                                       AND

                          MEDCO HEALTH SOLUTIONS, INC.

<PAGE>

                      POINT OF CARE DATA SERVICES AGREEMENT

         THIS POINT OF CARE DATA SERVICES AGREEMENT (this "Agreement"), dated as
of _______, 2002, is entered into between Merck & Co., Inc., a New Jersey
corporation ("Merck"), and Medco Health Solutions, Inc., a Delaware corporation
("Medco"). Merck and Medco are each referred to individually as a "Party," and
collectively as the "Parties".

                                    RECITALS

         A. Medco has partnered with a variety of third party technology vendors
to develop certain point-of-care ("POC") technologies and initiatives that allow
physicians to write prescriptions, receive formulary and prescription
information and communicate electronically with Medco through the use of
computers and wireless hand-held devices (the "POC Channels").

         B. Medco also provides to Merck periodic summary reports concerning the
use of the POC Channels, which Merck uses to better understand POC distribution
and capabilities, and for general marketing purposes.

         C. The Parties desire to continue to exchange information and expand
the exchange of information under the terms and conditions of this Agreement.
Accordingly, the Parties agree as follows:

                                    ARTICLE I

                                   DEFINITIONS

         For the purpose of this Agreement, the following capitalized terms
shall have the following meanings:

         1.1 Capture Rate. "Capture Rate" shall mean the percentage of
Participating Physician prescriptions captured on the POC Channel. Capture Rate
shall be equal to the number of Medco prescriptions written annually by
Participating Physicians through the POC Channels divided by the total number of
Medco prescriptions written annually by Participating Physicians

         1.2 Confidential Disclosure Agreement. "Confidential Disclosure
Agreement" shall mean that certain Confidential Disclosure Agreement, dated as
of the date hereof, between the Parties.

         1.3 Effective Date. "Effective Date" shall mean the date that this
Agreement is executed by the Parties.

         1.4 Final Separation. "Final Separation" means the date as of which
Merck divests itself of its equity interest in Medco, currently expected to be
by means of a distribution of Medco shares to Merck shareholders.

<PAGE>

         1.5 Indemnification Agreement. "Indemnification Agreement" shall mean
that certain Indemnification and Insurance Matters Agreement, dated as of the
date hereof, between the Parties.

         1.6 Intellectual Property. "Intellectual Property" shall mean (a) all
inventions (whether patentable or unpatentable and whether or not reduced to
practice), all improvements thereon, and all patents, patent applications and
patent disclosures, together with all reissuances, continuations,
continuations-in-part, revisions, extensions and reexaminations thereof, (b) all
trademarks, service marks, trade dress, logos, trade names, domain names, and
corporate names, together with all translations, adaptations, derivations and
combinations thereof and including all goodwill associated therewith, and all
applications, registrations and renewals in connection therewith, (c) all
copyrights and all applications, registrations and renewals in connection
therewith, (d) all trade secrets and confidential business information
(including ideas, research and development, know-how, formulas, compositions,
manufacturing and production processes and techniques, methods, schematics,
technology, technical data, designs, drawings, flowcharts, block diagrams,
specifications, customer and supplier lists, pricing and cost information and
business and marketing plans and proposals), (e) all computer software
(including data and related documentation), (f) all other proprietary rights,
(g) all copies and tangible embodiments of the foregoing categories of
intellectual property listed in subsections (a) through (f) (in whatever form or
medium), and (h) all licenses, sublicenses, agreements, or permissions related
to the foregoing categories of intellectual property listed in subsections (a)
through (g).

         1.7 Participating Merck Identified Physicians. "Participating Merck
Identified Physicians" shall mean the particular physicians who are
Participating Physicians in Medco's POC initiative and who Merck from time to
time notifies Medco, in accordance with the specifications listed in Schedule
1.7, are recipients of Merck's marketing or market research activity.

         1.8 Participating Physicians. "Participating Physicians" shall mean
those physicians who subscribe to the POC Channels and who use such POC Channels
to support and enable prescription writing and who use the POC Channels to write
prescriptions at least twice a month.

         1.9 Person. "Person" shall mean any individual, corporation,
association, partnership (general or limited), joint venture, trust, estate,
limited liability company, or other legal entity or organization.

         1.10 POC Channels. "POC Channels" shall have the meaning specified in
Recital A.

         1.11 POC Deliverables. "POC Deliverables" shall mean the deliverables
to be provided to Merck under Section 2.3 of this Agreement and the applicable
Schedules.

         1.12 Subsidiary. "Subsidiary" of either Party shall mean a corporation
or other organization whether incorporated or unincorporated, of which at least
a majority of the securities or interests having by the terms thereof ordinary
voting power to elect at least a majority of the board of directors or others
performing similar functions with respect to such corporation or other
organization is directly or indirectly owned or controlled by such Party or by
any one or more of its Subsidiaries, or by such Party and one or more of its
Subsidiaries. For

                                      -2-

<PAGE>

purposes of this Agreement, neither Medco nor any of its Subsidiaries shall be
deemed to be a Subsidiary of Merck.

         1.13 Term. "Term" shall have the meaning set forth in Section 5.1 of
this Agreement.

         1.14 Termination Date. "Termination Date" shall mean the date that the
Agreement is terminated pursuant to Article V.

                                   ARTICLE II

                           DELIVERABLES TO BE PROVIDED

         2.1 Merck Input Regarding POC Channel Content and POC Deliverables.
Merck shall have the right, at least once in each calendar quarter, to
participate with Medco in a joint POC planning meeting and to provide input on
the design, recommended clinical content and information tracked for the POC
Channels. The inclusion or use in the POC Channels of the material provided by
Merck shall be at the discretion of Medco. Merck shall have the right, within
reason, to request additional types of information be gathered from the POC
Channels and analyses be performed on data collected from or on the POC
Channels. Medco shall use its best efforts to accommodate Merck's suggestions
regarding these additional data and analyses, assuming they are not prohibited
by law, regulation, or third-party contractual limitation, and that they are not
operationally or methodologically impracticable. In the event that Medco
declines to follow such suggestions, Medco shall provide Merck with a good faith
reason for its decision.

         2.2 Control Over Content. Medco and/or the third party technology
vendors shall have final control over the content of the POC Channels. Medco
shall keep Merck apprised of all POC functionality that Medco technology
partners have developed and deployed.

         2.3 POC Deliverables. Medco shall provide to Merck the reports and
services listed in Schedule 2.3 concerning the POC Channels.

         2.4 Clarifying and Backup Data. Upon reasonable request by Merck, Medco
will use its best efforts to provide clarifications to and explanatory data for
the reports and statistics specified in Schedule Section 2.3, subject to Medco's
duty to safeguard patient information under Article IX of this Agreement.

                                  ARTICLE III

                                  COMPENSATION

         3.1 Fees for POC Deliverables. During the Term, Merck shall pay Medco
fees on a semi-annual basis, in arrears, calculated in accordance with Schedule
3.1.

         3.2 Invoices. Medco shall provide Merck with semi-annual invoices, on
June 1 and December 1, reflecting the estimated fees payable for the semi-annual
period ending June 30 or December 31, as determined in accordance with Schedule
3.1. Actual fees payable shall be calculated promptly after the end of each
calendar year, and a final invoice for the year,

                                      -3-

<PAGE>

reflecting a true-up of any adjustments from the estimated fees previously
billed, will be provided by Medco to Merck by March 1.

                                   ARTICLE IV

                               GENERAL OBLIGATIONS

         4.1 Performance Parameters. To the extent that performance parameters
or specifications are established in this Agreement, Medco shall perform its
obligations in accordance with those parameters and specifications. To the
extent that specific performance parameters are not specifically enumerated in
this Agreement, Medco shall use reasonable commercial efforts to provide the POC
Deliverables.

                                   ARTICLE V

                              TERM AND TERMINATION

         5.1 Term. The Term of this Agreement shall commence on the Effective
Date and continue through and including December 31, 2005.

         5.2 Termination in Full. Merck may terminate this Agreement, for any
reason or no reason, effective January 1, 2003 or at any later date upon 90 days
prior written notice to Medco. In the event such termination occurs mid-year,
Medco shall furnish a final invoice to Merck within 60 days following the
effective date of termination. The final invoice shall be calculated in
accordance with Schedule 3.1, including a true-up against prior estimated
payments, except that the actual performance data shall be calculated as of the
effective date of termination, and the fees payable shall be pro rated for the
number of months from January 1 of the year of termination to the effective date
of termination.

         5.3 Termination in Part. Merck may also terminate this Agreement in
part, by eliminating its request for one or more of the POC Deliverables, for
any reason or no reason, effective January 1, 2003 or at any later time upon 90
days prior written notice to Medco. In the event that Merck terminates this
Agreement in part, both the base fee and the performance fee shall be reduced
proportionately by the proportionate value of the terminated POC Deliverable to
the fees for all the POC Deliverables, and the parties shall promptly seek to
agree upon that proportionate reduction.

         5.4 Effect of Termination. Termination of this Agreement shall relieve
and release the Parties from any further liabilities and obligations hereunder
with respect to the services terminated except any liabilities or obligations
that accrued prior to the effective date of such termination and except as
provided in Section 5.5.

         5.5 Survival. Articles VI, VIII and XI shall survive termination of
this Agreement.

                                      -4-

<PAGE>

                                   ARTICLE VI

                                 CONFIDENTIALITY

         6.1 The terms of the Confidential Disclosure Agreement shall apply to
any Confidential Information (as defined in Section 6.2) of either Party
provided to the other Party for the purpose of providing Services under this
Agreement.

         6.2 Confidential Information shall have the meaning set forth in
Section 1.2 of the Confidential Disclosure Agreement; without limiting that
definition, Confidential Information shall also specifically include: (a)
Merck's list of identified physicians, (b) information indicating the success in
reaching Merck Identified Physicians; (c) any information revealing what data
Merck sought to include in or obtain from the POC Channels; and (d) the data and
reports exchanged by the Parties under this Agreement.

         6.3 In addition to those obligations imposed by the Confidential
Disclosure Agreement, Confidential Information shall only be used by the Party
receiving it for the limited purposes under this Agreement for which that
Confidential Information is provided, and for no other purpose. Notwithstanding
this restriction, Merck may use the reports provided to it under this Agreement:

               (a)  internally, to better understand POC distribution and
                    capabilities, and for general marketing purposes, and

               (b)  may share those reports (other than the particular items of
                    data noted as exceptions on Schedule 2.3.2) externally with

                    (i)  its consultants, advisors, marketing partners, and
                         co-promotion partners,

                    (ii) joint ventures in which Merck is a partner, and

                    (iii) vendors

                    other than any pharmacy benefit manager, any health care
                    plan that functions as a pharmacy benefit manager, or any
                    entity the offers hardware, software or content to
                    physicians in the POC market, in order to assist Merck in
                    effectuating the marketing purposes for which this
                    information is obtained, and subject to obtaining a
                    commitment from any entity with whom the information is
                    shared that it will likewise hold the information in
                    confidence and not use it for any other purpose.

               (c)  With respect to the particular items of data noted as
                    exceptions on Schedule 2.3.2, Merck may verbally convey to
                    the entities permitted to receive information under
                    subsection (b) above Merck's summary conclusions drawn from
                    the information contained in the reports provided by Medco,
                    but may not convey the detailed content of the reports.

               (d)  Neither the reports themselves nor Merck's conclusions from
                    the content of those reports may be shared with any pharmacy
                    benefit manager, any

                                      -5-

<PAGE>

                    health care plan that functions as a pharmacy benefit
                    manager, or any entity that offers hardware, software or
                    content to physicians in the POC market.

                                  ARTICLE VII

                        RELATIONSHIP BETWEEN THE PARTIES

         7.1 The relationship between the Parties established under this
Agreement is that of independent contractors and neither Party is an employee,
agent, partner, or joint venture of or with the other.

                                  ARTICLE VIII

                              INTELLECTUAL PROPERTY

         8.1 Merck shall retain all right, title and interest in the materials
that it provides to Medco for use in, on, or in connection with the POC
Channels. However, Merck grants to Medco a perpetual, non-exclusive and
non-royalty-bearing license to use those suggestions and materials in the design
and content of the POC Channels, subject to Article VI.

         8.2 Medco shall retain all right, title and interest in the compilation
of data and reports to be provided to Merck under this Agreement, and in the
data, analyses, and methodologies used to produce the POC Deliverables. However,
Medco grants to Merck a perpetual, non-exclusive and non-royalty bearing license
to use those data, reports, and analyses, subject to Article VI of this
Agreement.

         8.3 As between the Parties, Medco shall retain all right, title and
interest in the content of the POC Channels, except to the extent that Merck
provides such content to Medco.

                                   ARTICLE IX

                                 PATIENT PRIVACY

         9.1 Medco represents and warrants that it will perform all of its
duties under this Agreement in compliance with all applicable federal, state,
local and foreign laws and regulations and licensing requirements, including but
not limited to those related to patient notification, authorization and consent,
privacy of medical records and medical information. By way of example, Medco is
required under the Standards adopted pursuant to the Health Insurance
Portability and Accountability Act of 1996, either directly as a covered entity
or in its role as a business associate of its health plan clients, to assure
that protected health information (all as defined in such Standards) is used or
disclosed only in accordance with such Standards.

                                      -6-

<PAGE>

                                   ARTICLE X

                         REPRESENTATIONS AND WARRANTIES

         10.1 Intellectual Property. Medco represents and warrants that it has
the right to use the POC Channels and to provide the POC Deliverables. Medco's
use of the POC Channels and provision of the POC Deliverables shall not infringe
the Intellectual Property rights of any third party.

         10.2 If at any time during the Term of this Agreement, Medco concludes
that it cannot perform one or more obligations under this Agreement because of
legal or regulatory restrictions imposed upon it, Medco shall promptly notify
Merck, explain why it believes it cannot legally perform the obligation, and
provide Merck with an estimate of the impact of the restriction on its
performance of this Agreement as a whole. Nothing in this Agreement is intended
to allow Medco to create by contract an impediment to performance of this
Agreement that differs from any restriction to which Medco is subject as to
either drug manufacturers generally or any broader category of third-parties.

                                   ARTICLE XI

                                 INDEMNIFICATION

         11.1 Indemnification. Medco shall indemnify and hold harmless the Merck
Indemnitees (as defined in the Indemnification Agreement) in respect of all
Liabilities (as defined in the Indemnification Agreement) related to, arising
from, asserted against or associated with Medco's providing services hereunder.
Such indemnification obligation shall be a Medco Liability for purposes of the
Indemnification Agreement, and the provisions of Article I thereof with respect
to indemnification shall govern with respect thereto.

         11.2 Additional Indemnification. In addition to, and not in limitation
of, the indemnification provided under Section 11.1, Medco shall indemnify and
hold harmless the Merck Indemnitees from and against any and all loss, damage or
expense, including reasonable attorneys' fees, that Merck may sustain or incur
as a result of any claim, suit or proceeding arising out of or in connection
with: (1) any actual or alleged negligent or willful act or omission of Medco,
or any of its employees, agents or subcontractors; (2) any actual or alleged
violation by Medco, or any of its employees, agents or subcontractors of any
law, statute, ordinance or regulation; (3) any failure to obtain necessary
consents, authorizations, approvals or releases for use of the POC Deliverables
hereunder and any violation or alleged violation of any third party or
individual's privacy right by the POC Deliverables provided to Merck under this
Agreement; (4) any infringement or alleged infringement by the POC Deliverables
provided to Merck under this Agreement upon any Intellectual Property rights of
any third party; or (5) any failure to perform any obligation under this
Agreement. Such indemnification obligation shall be a Medco Liability for
purposes of the Indemnification Agreement, and the provisions of Article I
thereof with respect to indemnification shall govern with respect thereto.

                                      -7-

<PAGE>

                                  ARTICLE XII

                               DISPUTE RESOLUTION

         12.1 Any dispute, controversy or claim arising between the Parties
relating to the interpretation or performance of this Agreement shall be
resolved in accordance with the provisions of Article III of the Indemnification
Agreement.

         12.2 Injunctive Relief. Notwithstanding the provisions of Section 12.1,
Medco acknowledges that any violation of Article(s) VI and/or VIII of this
Agreement will cause Merck immediate and irreparable harm that monetary damages
cannot adequately remedy. The parties agree that, upon any actual or impending
violation of Article(s) VI and/or VIII of this Agreement, in addition to any
money damages or other legal remedy that Merck may have, Merck shall also be
entitled to equitable relief, including injunctive relief and specific
performance (and Medco shall not plead in defense thereto that there would be an
adequate remedy at law), without bond or proof of damages. Such equitable relief
may be sought in an arbitration proceeding pursuant to Section 3.1(c) of the
Indemnification Agreement (without first complying with the negotiation
provisions of Section 3.1(a) thereof) or in a court, subject to Section 13.2. In
the event of litigation relating to this Agreement, if a court of competent
jurisdiction determines that Medco has breached Article(s) VI and/or VIII of
this Agreement, Medco shall be liable and pay to Merck the reasonable legal fees
and costs incurred in connection with such litigation, including any appeal from
such litigation.

                                  ARTICLE XIII

                                  MISCELLANEOUS

         13.1 Entire Agreement. This Agreement, the schedules, and any other
agreements specifically referred to in this Agreement constitute the entire
agreement between the Parties with respect to the subject matter of this
Agreement and shall supersede all prior or contemporaneous written or oral
agreements or understandings with respect to the same subject matter.

         13.2 Governing Law; Forum. This Agreement shall be construed in
accordance with, and all Disputes hereunder shall be governed by, the procedural
(except to the extent inconsistent with the procedures set forth in Article III
of the Indemnification Agreement) and substantive laws of the State of New York
as to all matters regardless of the laws that might otherwise govern under
principles of conflicts of laws applicable thereto. Under no circumstances may
any party seek or be awarded punitive damages under this Agreement. Any state
court sitting in New York county, New York and/or the United States District
Court for the Southern District of New York shall have exclusive jurisdiction
and venue, and each party hereto hereby submits to such jurisdiction and venue
and irrevocably waives, to the fullest extent permitted by applicable law, any
objection it may now or hereafter have to such jurisdiction or the laying of
such venue over any Disputes between the parties that are permitted to be
brought in a court, or the enforcement of any decision of an arbitrator,
pursuant to Article III of the Indemnification Agreement. Each of the parties
hereby irrevocably waives any right to a jury trial with respect to a Dispute.

                                      -8-

<PAGE>

         13.3 Descriptive Headings. The headings contained in this Agreement,
including its Schedules and table of contents, are for reference purposes only
and shall not affect in any way the meaning or interpretation of this Agreement.
Any capitalized term used in any Schedule but not otherwise defined therein,
shall have the meaning assigned to such term in this Agreement. When a reference
is made in this Agreement to an Article or a Section, such reference shall be to
an Article or Section of this Agreement unless otherwise indicated.

         13.4 Notices. All notices and other communications required or
permitted to be given by either Party pursuant to the terms of this Agreement
shall be in writing to and shall be deemed to have been duly given when
delivered in person, by express or overnight mail delivery by a nationally
recognized courier (delivery charges prepaid), or by registered or certified
mail (postage prepaid, return receipt requested), as follows:

                  if to Merck:

                                            Merck & Co., Inc.
                                            One Merck Drive
                                            P.O. Box 100
                                            Whitehouse Station, New Jersey 08889
                                            Attention: General Counsel

                  if to Medco:

                                            Medco Health Solutions, Inc.
                                            100 Parsons Pond Road
                                            Franklin Lakes, New Jersey  07417
                                            Attention: General Counsel

or to such other address as the Party to whom notice is given may have
previously furnished to the other in writing in the manner set forth above. All
notices and other communication shall be deemed to have been given and received
on the date of actual delivery.

         13.5 Nonassignability; Third-Party Beneficiaries. Except as otherwise
permitted hereby, neither Party may, directly or indirectly, in whole or in
part, whether by operation of law or otherwise, assign or transfer this
Agreement or its rights hereunder, without the other's prior written consent
and, except as otherwise permitted hereby, any attempted assignment, transfer or
delegation without such prior written consent shall be voidable at the sole
option of such other party. Nevertheless, Merck may assign or transfer this
agreement to a successor in interest in connection with a corporate merger.
Without limiting the foregoing, this Agreement will be binding upon and inure to
the benefit of the Parties and their permitted successors and assigns. This
Agreement, including the Schedules and the other documents referred to herein,
shall be binding upon and inure solely to the benefit of each Party hereto and
its legal representatives and successors and assigns and nothing in this
Agreement, express or implied, is intended to confer upon any other Person any
rights or remedies of any nature whatsoever under or by reason of this
Agreement.

         13.6 Severability. If any term or other provision of this Agreement is
determined by a court, administrative agency or arbitrator, by any court or in
any binding arbitration, to be

                                      -9-

<PAGE>

invalid, illegal or incapable of being enforced by any rule of law or public
policy, all other conditions and provisions of this Agreement will nevertheless
remain in full force and effect so long as the economic or legal substance of
the transactions contemplated hereby is not affected in any manner materially
adverse to any Party. Upon such determination that any term or other provision
is invalid, illegal or incapable of being enforced, the Parties shall negotiate
in good faith to modify this Agreement so as to effect the original intent of
the Parties as closely as possible in an acceptable manner to the end that
transactions contemplated hereby are fulfilled to the fullest extent possible.

         13.7 Failure or Indulgence not Waiver; Remedies Cumulative. No failure
or delay on the part of either Party hereto in the exercise of any right
hereunder shall impair such right or be construed to be a waiver of, or
acquiescence in, any breach of any representation, warranty or agreement herein,
nor shall any single or partial exercise of any such right preclude the further
exercise thereof or of any other right. All rights and remedies existing under
this Agreement are cumulative to, and not exclusive of, any rights or remedies
otherwise available.

         13.8 Amendment. No change or amendment will be made to this Agreement
except by an instrument in writing signed on behalf of each of the Parties
hereto.

         13.9 Counterparts. This Agreement may be executed in counterparts,
which, taken together, shall be considered to be one and the same instrument.

         IN WITNESS WHEREOF, each of the Parties has caused this Agreement to be
executed in duplicate originals by its duly authorized representatives.

MERCK & CO., INC.                     MEDCO HEALTH SOLUTIONS, INC.

By: ____________________________      By: _________________________________
Name:                                 Name:
Title:                                Title:

                                      -10-

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