Document:

<PAGE>

                                                                    EXHIBIT 4.25

                             SUPPLEMENTAL INDENTURE

         This SUPPLEMENTAL INDENTURE (this "Supplemental Indenture"), dated as
of August 9, 2001, is made by and among PharMerica, Inc., a Delaware corporation
(the "Company"), the Subsidiary Guarantors (the "Subsidiary Guarantors") to the
Indenture (as defined below) as identified on Schedule A thereof and BNY Midwest
Trust Company (as successor to Harris Trust and Savings Bank), as trustee under
the Indenture (the "Trustee").

                               W I T N E S S E T H

         WHEREAS, the Company and the Subsidiary Guarantors have heretofore
executed and delivered to the Trustee a certain indenture (the "Indenture"),
dated as of March 31, 1998, providing for the issuance of an aggregate principal
amount of $325,000,000 of 8 3/8% Senior Subordinated Notes due 2008 (the
"Notes");

         WHEREAS, on July 17, 2001, the Company commenced an offer to purchase
all of the outstanding Notes and a consent solicitation to adopt certain
amendments to the Indenture (the "Proposed Amendments"), on the terms and
subject to the conditions set forth in that certain Offer to Purchase and
Consent Solicitation Statement, dated July 17, 2001, as may have been, and may
be further, modified and amended by the Company from time to time (the
"Statement");

         WHEREAS, pursuant to Section 9.02 of the Indenture, the consent of the
holders (each a "Holder" and collectively, the "Holders") of a majority in
principal amount of the Notes outstanding is required to adopt the Proposed
Amendments (the "Majority Threshold"), other than the Asset Sale Amendment, as
that term is defined in the Statement, and the consent of the Holders of at
least two-thirds in principal amount of the Notes then outstanding is required
to adopt the Asset Sale Amendment (the "Two-Thirds Threshold");

         WHEREAS, pursuant to Sections 9.02 and 9.06 of the Indenture, the
Trustee is obligated to execute this Supplemental Indenture upon request of the
Company, accompanied by a board resolution authorizing the execution hereof,
evidence of the aforesaid requisite consents, and the Trustee's receipt of an
Officer's Certificate and Opinion of Counsel (as those terms are defined in the
Indenture) stating that the execution hereof is authorized or permitted by the
Indenture (collectively, the "Trustee Conditions");

         WHEREAS, in response to the Consent Solicitation (as that term is
defined in the Statement), the Company has received consents from Holders
meeting the Majority Threshold;

         WHEREAS, pursuant to Sections 9.02 and 9.06 of the Indenture, the
Trustee is authorized to execute this Supplemental Indenture;

<PAGE>

         NOW THEREFORE, in consideration of the foregoing and for other good and
valuable consideration, the receipt of which is hereby acknowledged, each of the
Company, the Subsidiary Guarantors and the Trustee mutually covenant and agree
for the equal and ratable benefit of the Holders of the Notes as follows:

         Section 1. Capitalized Terms. Capitalized terms used herein without
definition shall have the meanings assigned to them in the Indenture.

         Section 2. Conditions Precedent. Each of the Trustee Conditions has
been satisfied in all respects. The Company, the Subsidiary Guarantors and the
Trustee are this date executing and thereupon making effective this Supplemental
Indenture.

         Section 3. Amendments to the Indenture. Pursuant to Section 9.02 of the
Indenture, at the opening of business on the Acceptance Date (as that term is
defined in the Statement), the Indenture shall be amended by: (1) deleting
Sections 4.03, 4.04, 4.05, 4.07, 4.08, 4.09, 4.11, 4.12, 4.13, 4.15, 4.16, 4.17,
4.18, 4.19, 5.01, and 6.01(d) through and including 6.01(h) of the Indenture;
(2) replacing each such Section with the words "Intentionally omitted."; (3)
deleting all textual references in the Indenture and the Notes to each such
Section; and (4) deleting all definitions in the Indenture and the Notes
exclusively related to each such Section; including without limitation, the
following:

         (a)  Section 1.01 of the Indenture is hereby amended as follows:

                  (1) The second parenthetical phrase in clause (i) of the
definition of "Asset Sale" shall be deleted in its entirety; and

                  (2) By deleting the following definitions in their entirety,

                        "Acquired Debt",
                        "Attributable Debt",
                        "Consolidated Cash Flow",
                        "Consolidated Interest Expense",
                        "Consolidated Net Income",
                        "Consolidated Net Worth",
                        "Existing Indebtedness"
                        "Fixed Charges",
                        "Fixed Charge Coverage Ratio",
                        "Incur",
                        "Marketable Securities",
                        "Net Income",
                        "Permitted Investment",
                        "Permitted Liens",
                        "Permitted Refinancing Indebtedness",
                        "Restricted Investment", and
                        "Subordinated Indebtedness".

                                       -2-

<PAGE>

         (c) Section 6.01(c) of the Indenture is hereby amended by deleting the
words "Sections 4.10, 4.14 or 5.01" and replacing them with "Sections 4.10 and
4.14".

         (d) Section 6.02 of the Indenture is hereby amended by deleting all
text contained in said Section but the first and last sentence thereof.

         (e) All references to the Sections of the Indenture deleted by Section
3 of this Supplemental Indenture shall be deleted from Section 8.03 of the
Indenture.

         (f) Section 8.04(e) of the Indenture shall be amended by deleting the
words "or insofar as Sections 6.01(g) or 6.01(h) hereof is concerned, at any
time in the period ending on the 91st day after the date of deposit" appearing
therein.

         (g) Section 11.03 of the Indenture is hereby amended by deleting: (1)
the first proviso in the first sentence thereof; and (2) the words "(i) in the
event of an Asset Sale, the Net Proceeds from such sale or other disposition are
applied in accordance with the provisions of Section 4.10 hereof and (ii)"
appearing in the second sentence thereof.

         Section 4. Further Amendments to the Indenture. If at or prior to the
Expiration Date (as that term is defined in the Statement) consents from Holders
meeting the Two-Thirds Threshold shall have been obtained, then at the opening
of business on the Acceptance Date, pursuant to Section 9.02 of the Indenture,
the Indenture shall be further amended by: (1) deleting Section 4.10 of the
Indenture; (2) replacing such Section with the words "Intentionally omitted.";
(3) deleting all textual references in the Indenture to such Section; and (4)
deleting all definitions exclusively related thereto; including without
limitation, the following:

         (a) Section 1.01 of the Indenture shall be further amended by deleting
the following definitions in their entirety:

                "Asset Sale";
                "Designated Noncash Consideration"`;
                "Equity Interests";
                "Investments";
                "Net Income";
                "Net Proceeds";
                "Non-Recourse Debt";
                "Permitted Joint Venture"; and
                "Related Business".

         (b) Section 3.01 of the Indenture is hereby amended by deleting the
words "4.10 or" appearing in the first sentence of the second paragraph thereof.

         (c) Section 3.05 of the Indenture is hereby amended by:

                                       -3-

<PAGE>

              (1) deleting the words "4.10 or" appearing in the first sentence
         of the first paragraph thereof.

              (2) deleting the words "an Asset Sale Offer or" each time they
         appear in the first sentence of the second paragraph thereof, and
         replacing them with the word "a".

         (d) Section 3.08 of the Indenture is hereby amended by deleting the
words ", 4.10 and" appearing therein.

         (e) Section 3.09 of the Indenture is hereby amended by: (1) deleting
the words "pursuant to an Asset Sale Offer under Section 4.10 hereof" appearing
in the first paragraph thereof; (2) deleting the words "or an Asset Sale Offer
shall be required to be made pursuant to Section 4.10, as the case may be,"
appearing in the first sentence of the second paragraph thereof; (3) replacing
the words "Section 4.10 hereof, in the case of an Asset Sale Offer, or 4.14
hereof, in the case of a Change of Control Offer" with the words "4.14 hereof";
(4) deleting the words "or Asset Sale Offer, as the case may be," appearing in
the fourth sentence of the fourth paragraph thereof; and (5) replacing the words
"Section 4.10 or 4.14 hereof, as the case may be," appearing in clause (a) of
the fourth paragraph thereof with the words "4.14 hereof".

         (f) Section 6.01(b) of the Indenture is hereby further amended by
deleting the words "or an Asset Sale Offer" appearing therein.

         (g) Section 6.01(c) of the Indenture is hereby further amended by
deleting the words "Sections 4.10 and 4.14" appearing therein and replacing them
with the words "Section 4.14".

         Section 5. Corresponding Amendments to the Notes. Each Note shall be
amended to make the terms of such Note consistent with the terms of the
Indenture, as amended by this Supplemental Indenture. To the extent of any
conflict between the terms of the Notes and the terms of the Indenture, as
amended by this Supplemental Indenture, the terms of the Indenture, as amended
by this Supplemental Indenture, shall control.

         Section 6. Notice to Trustee. Within 30 days after the Acceptance Date,
the Company shall give the Trustee written notice indicating the Acceptance Date
and stating that consents from holders meeting the Two-Thirds Threshold shall
have been received; provided, however, the failure of the Company to give such
notice shall in no way impair the validity or the operation of any provision in
this Supplemental Indenture.

         Section 7. New York Law to Govern. The internal law of the State of New
York shall govern and be used to construe this Supplemental Indenture.

                                       -4-

<PAGE>

         Section 8. Counterparts. The parties may sign any number of copies of
this Supplemental Indenture. Each signed copy shall be an original, but all of
them together represent the same agreement.

         Section 9. Effect Of Headings. The Section headings herein are for
convenience only and shall not affect the construction hereof.

         Section 10. The Trustee. The Trustee shall not be responsible in any
manner whatsoever for or in respect of the validity or sufficiency of this
Supplemental Indenture or for or in respect of the correctness of the recitals
of fact contained herein, all of which recitals are made solely by the Company
and the Subsidiary Guarantors.

         Section 11. Conflicts. To the extent of any inconsistency between the
terms of this Supplemental Indenture and the Indenture, the terms of this
Supplemental Indenture shall control.

         Section 12. Entire Agreement. This Supplemental Indenture constitutes
the entire agreement of the parties hereto with respect to the amendments to the
Indenture set forth herein.

                            [Signature Pages Follows]

                                       -5-

<PAGE>

         IN WITNESS WHEREOF, the parties hereto have caused this Supplemental
Indenture to be duly executed and attested, all as of the date first above
written.

                                        PHARMERICA, INC.

                                        SUBSIDIARY GUARANTORS:

                                        ALLIANCE HEALTH SERVICES, INC.
                                        BEVERLY ACQUISITION CORPORATION
                                        COMPUTRAN SYSTEMS, INC.
                                        DUNNINGTON DRUG, INC.
                                        HEALTHCARE PRESCRIPTION SERVICES,
                                         INC.
                                        INSTA-CARE HOLDINGS, INC.
                                        MEDICAL HEALTH INDUSTRIES INC.
                                        ALLIANCE HOME HEALTH CARE, INC.
                                        BROWNSTONE PHARMACY, INC.
                                        OMNI MED B, INC.
                                        DUNNINGTON RX SERVICES OF
                                         MASSACHUSETTS, INC.
                                        DUNNINGTON RX SERVICES OF RHODE
                                         ISLAND, INC.
                                        DD WHOLESALE, INC.
                                        PHARMACY CORPORATION OF AMERICA -
                                        MASSACHUSETTS, INC.
                                        INSTA-CARE PHARMACY SERVICES
                                         CORPORATION
                                        PHARMACY DYNAMICS GROUP, INC.
                                        PHARMACY CORPORATION OF    AMERICA
                                        CAPSTONE MED., INC.
                                        MEDIDYNE CORP.
                                        PHARMERICA DRUG SYSTEMS, INC.
                                        ROMBRO'S DRUG CENTER, INC.
                                        COMPUSCRIPT, INC.
                                        CAPSTONE PHARMACY OF DELAWARE, INC.
                                        PREMIER PHARMACY, INC.
                                        GOOT'S GOODIES, INC.
                                        SOUTHWEST PHARMACIES, INC.
                                        FAMILY CENTER PHARMACY, INC.
                                        TMESYS, INC.

                       [signatures continued on next page]

                                       -6-

<PAGE>

                                        EXPRESS PHARMACY SERVICES, INC.
                                        GOOT WESTBRIDGE PHARMACY, INC.
                                        GOOT NURSING HOME PHARMACY, INC.
                                        GOOT'S PHARMACY & ORTHOPEDIC
                                        SUPPLY, INC.

                                        By: /s/ Charles J. Carpenter
                                            ---------------------------------
                                        Name:  Charles J. Carpenter
                                        Title: President

                                        By:  /s/ Neil F. Dimick
                                             --------------------------------
                                        Name:  Neil F. Dimick
                                        Title: Executive Vice President and
                                               Chief Financial Officer

                                      TRUSTEE:

                                      BNY MIDWEST TRUST COMPANY

                                        By:    /s/ DGDonovan
                                               ------------------------------
                                        Name:  DGDonovan
                                        Title: Assistant Vice President

                            [Supplemental Indenture]

                                       -7-<PAGE>

                                                                    EXHIBIT 4.26

================================================================================

                          SECOND SUPPLEMENTAL INDENTURE

                          Dated as of December 27, 2001

                                  to Indenture

                          Dated as of December 12, 2000

                                      Among

                   AMERISOURCE HEALTH CORPORATION, as Issuer,

                      AMERISOURCE CORPORATION, as Guarantor

                                       and

                    BANK ONE TRUST COMPANY, N.A., as Trustee

                               __________________

             5% Convertible Subordinated Notes due December 1, 2007

================================================================================

<PAGE>

          This SECOND SUPPLEMENTAL INDENTURE dated as of December 27, 2001
("Second Supplemental Indenture"), is among AMERISOURCE HEALTH CORPORATION, a
corporation duly organized and existing under the laws of the State of Delaware
(the "Company"), AMERISOURCE CORPORATION, a corporation duly organized and
existing under the laws of the State of Delaware, as guarantor (the "Subsidiary
Guarantor"), AMERISOURCEBERGEN CORPORATION, a corporation duly organized and
existing under the laws of the State of Delaware (the "Parent"), the companies
listed on Schedule I attached hereto (individually, an "Additional Subsidiary
Guarantor," and collectively, the "Additional Subsidiary Guarantors"),
subsidiaries of the Company, and BANK ONE TRUST COMPANY, N.A., a national
banking association organized under the laws of the United States, as Trustee
hereunder (the "Trustee").

                                    RECITALS

          WHEREAS, the Company, the Subsidiary Guarantor and the Trustee have
heretofore duly executed and delivered an Indenture dated as of December 12,
2000, with respect to the 5% Convertible Subordinated Notes due December 1, 2007
of the Company (the "Securities"), and such obligations of the Company were
assumed by the Parent pursuant to the First Supplemental Indenture dated as of
August 29, 2001 among the Company, the Subsidiary Guarantor, the Parent and the
Trustee (as supplemented, the "Indenture"); and

          WHEREAS, Section 8.1 of the Indenture provides that without the
consent of any Holders of Securities the Company, when authorized by a Board
Resolution, and the Trustee, at any time and from time to time, may enter into
one or more indentures supplemental hereto to make any change that would not
adversely affect the interests of the Holders of Securities;

          WHEREAS, the Board of Directors of the Company, the Board of Directors
of the Subsidiary Guarantor, the Board of Directors of the Parent and the
respective Boards of Directors of each Additional Subsidiary Guarantor have
authorized the execution of this Second Supplemental Indenture and the delivery
hereof to the Trustee for the purpose of modifying the Indenture as set forth
herein;

          WHEREAS, in all other respects all actions have been taken necessary
to make this Second Supplemental Indenture the valid, binding and legal
obligation of the Company, the Subsidiary Guarantor, the Parent and each
Additional Subsidiary Guarantor in accordance with its terms;

          NOW, THEREFORE, in consideration of the premises, and of other good
and valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the Company, the Subsidiary Guarantor, the Parent and each
Additional Subsidiary Guarantor hereby covenants and agrees with the Trustee as
follows:

          SECTION 1.  Capitalized Terms. All capitalized terms not otherwise
defined herein shall have the meanings ascribed to them in the Indenture.

<PAGE>

          SECTION 2.  Agreement to Guarantee. Along with the Subsidiary
Guarantor, each Additional Subsidiary Guarantor unconditionally, and jointly and
severally, guarantees the Securities and the obligations of the Company and the
Parent thereunder and under the Indenture as a "Subsidiary Guarantor" in
accordance with and subject to all of the terms and conditions set forth in
Article XIV of the Indenture. The obligations of each Additional Subsidiary
Guarantor are expressly subordinated to all Guarantor Senior Debt of each
Subsidiary Guarantor, to the extent and in the manner provided in Article XIV of
the Indenture.

          SECTION 3.  Right to Designate Additional Subsidiary Guarantor as
Non-Guarantor. At any time after execution of this Second Supplemental
Indenture, the Company shall have the right in its sole discretion to designate
in an officers' certificate delivered to the Trustee any Additional Subsidiary
Guarantor as a non-guarantor ("Non-Guarantor") and such designated Non-Guarantor
shall be released and relieved of all obligations as Subsidiary Guarantor and
under its Subordinated Guarantee upon delivery of the officers' certificate to
the Trustee designing such Non-Guarantor, provided that at the time of such
redesignation, no Default or an Event of Default shall have occurred and be
continuing under the Indenture. Upon delivery by the Company to the Trustee of
such officers' certificate designating a Non-Guarantor, the Trustee shall
execute any documents reasonably required in order to evidence the release of
such Non-Guarantor from its obligations as Subsidiary Guarantor under the
Indenture and its Subordinated Guarantee.

          Any term or provision of this Second Supplemental Indenture to the
contrary notwithstanding, the maximum aggregate amount of the guarantee by each
Additional Subsidiary Guarantor shall not exceed the maximum amount that can be
hereby guaranteed without rendering this Second Supplemental Indenture, as it
relates to such Additional Subsidiary Guarantor, voidable under applicable law
relating to fraudulent conveyance or fraudulent transfer or similar laws
affecting the rights of creditors generally.

          SECTION 4.  The Indenture. This Second Supplemental Indenture is
expressly made supplemental to and shall form a part of the Indenture and is
made subject to all the conditions, covenants and warranties contained in the
Indenture. Nothing in this Second Supplemental Indenture is intended to or shall
provide any rights to any parties other than those expressly contemplated by
this Second Supplemental Indenture. Each reference in the Indenture to "this
Indenture", "hereunder", "hereof", and words of like import referring to the
Indenture and each reference in any other transaction document relating to the
Indenture shall mean the Indenture as amended hereby.

          SECTION 5.  Legend. There shall be stamped, overprinted, typed or
otherwise noted on Notes authenticated and delivered after the date hereof the
following legend:

          "THE INDENTURE GOVERNING THIS NOTE HAS BEEN AMENDED BY
          A SUPPLEMENTAL INDENTURE DATED AS OF DECEMBER 27, 2001.
          REFERENCE IS MADE TO SUCH SUPPLEMENTAL INDENTURE FOR A
          STATEMENT OF THE AMENDED RIGHTS AND OBLIGATIONS OF THE
          COMPANY AND HOLDERS OF THE NOTES."

                                        2

<PAGE>

          SECTION 6.  Trustee. The Trustee makes no representations as to the
validity or sufficiency of this Supplemental Indenture or the Indenture as
hereby supplemented, or the due execution hereof by the Company, the Subsidiary
Guarantor, the Parent and the Additional Subsidiary Guarantors, or the recitals
and statements contained herein, all of which recitals and statements are made
solely by the Company, the Subsidiary Guarantor, the Parent and the Additional
Subsidiary Guarantors, as the case may be.

          SECTION 7.  Governing Law. This Second Supplemental Indenture shall be
governed by and construed in accordance with the laws of the State of New York,
the United States of America, without regard to the principles of conflicts of
laws.

          SECTION 8.  Counterparts. This Second Supplemental Indenture may be
simultaneously executed in any number of counterparts, each of which shall be an
original, but such counterparts shall together constitute but one and the same
instrument.

          SECTION 9.  No Adverse Affect. Other than changes required or
permitted pursuant to the Indenture, nothing in this Second Supplemental
Indenture shall effect any change to the Indenture that would adversely affect
the interests of the Holders of the Securities.

                                        3

<PAGE>

          IN WITNESS WHEREOF, the parties hereto have caused this Second
Supplemental Indenture to be duly executed as of the day and year first written
above.

                                  Additional Subsidiary Guarantors:

                                  Alliance Health Services, Inc.
                                  Alliance Home Health Care, Inc.
                                  AmeriSource Health Services Corporation
                                  AmeriSource Sales Corporation
                                  ASD Hemophilia Management, LLC
                                  ASD Specialty Healthcare, Inc.
                                  BBC Laboratories
                                  BBC Operating Sub, Inc.
                                  BBC Packing Corporation
                                  BBC Special Packaging, Inc.
                                  BBC Transportation Company
                                  Bergen Brunswig Corporation
                                  Bergen Brunswig Drug Company
                                  Bergen Brunswig Realty Services, Inc.
                                  Beverly Acquisition Corporation
                                  Brownstone Pharmacy, Inc.
                                  Capstone Med, Inc.
                                  Capstone Pharmacy of Delaware, Inc.
                                  C.D. Smith Healthcare, Inc.
                                  Century Advertising, Inc.
                                  Choice Medical, Inc.
                                  Compuscript, Inc.
                                  Computran Systems, Inc.
                                  Corrections Pharmacies Licensing
                                           Company, L.L.C.
                                  Corrections Pharmacies, L.L.C.
                                  DD Wholesale, Inc.
                                  Drug Service, Inc.
                                  Dunnington Drug, Inc.
                                  Dunnington Rx Services of Massachusetts, Inc.
                                  Dunnington Rx Services of Rhode Island, Inc.
                                  Durr-Fillauer Medical, Inc.
                                  Express Pharmacy Services, Inc.
                                  Family Center Pharmacy, Inc.
                                  General Drug Company
                                  Goot Nursing Home Pharmacy, Inc.
                                  Goot's Goodies, Inc.

                                        4

<PAGE>

                                  Goot's Pharmacy & Orthopedic Supply, Inc.
                                  Goot Westbridge Pharmacy, Inc.
                                  Green Barn, Inc.
                                  Healthcare Prescription Services, Inc.
                                  Health Services Capital Corporation
                                  Home Medical Equipment Health Company
                                  Insta-Care Holdings, Inc.
                                  Insta-Care Pharmacy Services Corporation
                                  Integrated Commercialization Solutions, Inc.
                                  Inteplex, Inc.
                                  James Brudnick Company, Inc.
                                  K/S Instrument Corp.
                                  LAD Drug Corporation
                                  Los Angeles Drug Corporation
                                  MDP Properties, Inc.
                                  Medical Health Industries, Inc.
                                  Medidyne Corp.
                                  Omni Med B, Inc.
                                  Pharmacy Corporation of America, Inc.
                                  Pharmacy Corporation of America-
                                           Massachusetts, Inc.
                                  Pharmacy Dynamics Group, Inc.
                                  PharMerica Drug Systems, Inc.
                                  PharMerica, Inc.
                                  Premier Pharmacy, Inc.
                                  RightPak, Inc.
                                  Rombro's Drug Center, Inc.
                                  SBS Pharmaceuticals, Inc.
                                  Southwestern Drug Corporation
                                  Southwest Pharmacies, Inc.
                                  Stadt Solutions, LLC
                                  The Allen Company
                                  The Lash Group, Inc.
                                  Tmesys(TM), Inc.
                                  Value Apothecaries, Inc.

                                  By:   /s/ William D. Sprague
                                        -----------------------------------
                                        Name:  William D. Sprague
                                        Title: Vice President and Secretary

                                        5

<PAGE>

                                  ASD HEMOPHILIA PROGRAM, L.P.
                                  By:      ASD Hemophilia Management, LLC,
                                           General Partner

                                  By:      /s/ William D. Sprague
                                           -----------------------------------
                                           Name:  William D. Sprague
                                           Title: Vice President and Secretary

                                  CORRECTIONS PHARMACIES OF CALIFORNIA, LP
                                  By:      Corrections Pharmacies, L.L.C.,
                                           General Partner

                                  By:      /s/ William D. Sprague
                                           -----------------------------------
                                           Name:  William D. Sprague
                                           Title: Vice President and Secretary

                                  CORRECTIONS PHARMACIES OF HAWAII, LP
                                  By:      Corrections Pharmacies, L.L.C.,
                                           General Partner

                                  By:      /s/ William D. Sprague
                                           -----------------------------------
                                           Name:  William D. Sprague
                                           Title: Vice President and Secretary

                                  PHARMACY HEALTHCARE SOLUTIONS, LTD.
                                  By:      Value Apothecaries, Inc., General
                                           Partner

                                  By:      /s/ William D. Sprague
                                           -----------------------------------
                                           Name:  William D. Sprague
                                           Title: Vice President and Secretary

                                  AMERISOURCE HERITAGE CORPORATION

                                  By:  /s/ Diana Kammerer
                                       ---------------------------------------
                                  Name:    Diana Kammerer
                                  Title:   Secretary

                                        6

<PAGE>

                                  The Company:

                                  AMERISOURCE HEALTH CORPORATION

                                  By:      /s/ William D. Sprague
                                           -----------------------------------
                                           Name:  William D. Sprague
                                           Title: Vice President, General
                                                  Counsel and Secretary

                                  The Subsidiary Guarantor:

                                  AMERISOURCE CORPORATION,

                                  By:      /s/ William D. Sprague
                                           -----------------------------------
                                           Name:  William D. Sprague
                                           Title: Vice President, General
                                                  Counsel and Secretary

                                  The Parent:

                                  AMERISOURCEBERGEN CORPORATION

                                  By:      /s/ William D. Sprague
                                           -----------------------------------
                                           Name:  William D. Sprague
                                           Title: Vice President, General
                                                  Counsel and Secretary

                                  The Trustee:

                                  BANK ONE TRUST COMPANY, N.A

                                  By:  /s/ Michael Pinzon
                                       ---------------------------------------
                                       Name:  Michael Pinzon
                                       Title: Authorized Officer

                                       7

<PAGE>

                                                                      Schedule I

Alliance Health Services
Alliance Home Health Care, Inc.
AmeriSource Health Services Corporation
AmeriSource Heritage Corporation
AmeriSource Sales Corporation
ASD Hemophilia Management, LLC
ASD Hemophilia Program, L.P.
ASD Specialty Healthcare, Inc.
BBC Laboratories
BBC Operating Sub, Inc.
BBC Packing Corporation
BBC Special Packaging, Inc.
BBC Transportation Company
Bergen Brunswig Corporation
Bergen Brunswig Drug Company
Bergen Brunswig Realty Services, Inc.
Beverly Acquisition Corporation
Brownstone Pharmacy, Inc.
Capstone Med, Inc.
Capstone Pharmacy of Delaware, Inc.
C.D. Smith Healthcare, Inc.
Century Advertising, Inc.
Choice Medical, Inc.
Compuscript, Inc.
Computran Systems, Inc.
Corrections Pharmacies Licensing Company, L.L.C.
Corrections Pharmacies, L.L.C.
Corrections Pharmacies of California, LP
Corrections Pharmacies of Hawaii, LP
DD Wholesale, Inc.
Drug Service, Inc.
Dunnington Drug, Inc.
Dunnington Rx Services of Massachusetts, Inc.
Dunnington Rx Services of Rhode Island, Inc.
Durr-Fillauer Medical, Inc.
Express Pharmacy Services, Inc.
Family Center Pharmacy, Inc.
General Drug Company
Goot Nursing Home Pharmacy, Inc.
Goot's Goodies, Inc.
Goot's Pharmacy & Orthopedic Supply, Inc.
Goot Westbridge Pharmacy, Inc.

                                        8

<PAGE>

Green Barn, Inc.
Healthcare Prescription Services, Inc.
Health Services Capital Corporation
Home Medical Equipment Health Company
Insta-Care Holdings, Inc.
Insta-Care Pharmacy Services Corporation
Integrated Commercialization Solutions, Inc.
Inteplex, Inc.
James Brudnick Company, Inc.
K/S Instrument Corp.
LAD Drug Corporation
Los Angeles Drug Corporation
MDP Properties, Inc.
Medical Health Industries, Inc.
Medidyne Corp.
Omni Med B, Inc.
Pharmacy Corporation of America, Inc.
Pharmacy Corporation of America-Massachusetts, Inc.
Pharmacy Dynamics Group, Inc.
Pharmacy Healthcare Solutions, Ltd.
PharMerica Drug Systems, Inc.
PharMerica, Inc.
Premier Pharmacy, Inc.
RightPak, Inc.
Rombro's Drug Center, Inc.
SBS Pharmaceuticals, Inc.
Southwestern Drug Corporation
Southwest Pharmacies, Inc.
Stadt Solutions, LLC
The Allen Company
The Lash Group, Inc.
Tmesys(TM), Inc.
Value Apothecaries, Inc.

                                        9

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