EXPRESS SCRIPTS INC
8-K, 1998-03-02
SPECIALTY OUTPATIENT FACILITIES, NEC
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                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 8-K

                                 Current Report


                       Pursuant to Section 13 or 15(d) of
                       The Securities Exchange Act of 1934


Date of Report (Date of earliest event reported):  February 19, 1998


                              Express Scripts, Inc.
- -------------------------------------------------------------------------------
             (Exact Name of Registrant as specified in its Charter)


     Delaware                      0-20199                      43-1420563
- -------------------------------------------------------------------------------
(State or other jurisdiction   (Commission File No.)       (I.R.S. Employer
 of corporation)                                            Identification No.)


14000 Riverport Drive, Maryland Heights, Missouri                 63043
- -------------------------------------------------------------------------------
(Address of Principal Executive Offices)                       (Zip Code)


Registrant's telephone number, including area code:   (314) 770-1666
                                                     --------------------------

- -------------------------------------------------------------------------------
         (Former name or former address, if changed since last report)

<PAGE>

Item 5.  Other Events

     On February 19, 1998,  Express Scripts,  Inc.  ("Express  Scripts") entered
into  a  Stock  Purchase   Agreement  (the  "Stock  Purchase   Agreement")  with
Columbia/HCA  Healthcare Corporation  ("Columbia"),  VH Holdings, Inc. and Galen
Holdings,  Inc.,  pursuant to which Express  Scripts will acquire  ValueRx,  the
pharmacy benefit  management  business  operated by Columbia,  for approximately
$445 million in cash. A copy of the Stock Purchase  Agreement is filed with this
8-K as Exhibit 2.1 hereto.  Consummation  of the  transaction  is subject to the
conditions  set forth in the Stock  Purchase  Agreement,  including  appropriate
regulatory approvals.

Item 7. Financial Statements, Pro Forma Financial Information and Exhibits

 (c) The following exhibits are filed as part of this report on Form 8-K:

     Exhibit 2.1 Stock Purchase Agreement by and among  Columbia/HCA  Healthcare
Corporation,  VH Holdings, Inc., Galen Holdings, Inc. and Express Scripts, Inc.,
dated as of February 19, 1998, and related Schedules (all Schedules,  other than
those relating to the calculation of the Purchase Price [as defined therein] are
omitted from this filing,  but will be filed with the Commission  supplementally
upon request).

     Exhibit 99.1 Press release, dated February 20, 1998, by
Express Scripts, Inc.

<PAGE>

                                    SIGNATURE


     Pursuant to the  requirements  of the Securities  Exchange Act of 1934, the
registrant  has duly  caused  this  report  to be  signed  on its  behalf by the
undersigned hereunto duly authorized.


                                         EXPRESS SCRIPTS, INC.



Date:    February 27, 1998                By: /s/ Barrett A. Toan
                                              Barrett A. Toan
                                          President and Chief Executive Officer
<PAGE>


                                  EXHIBIT INDEX


  EXHIBIT NO.     DESCRIPTION

      2.1         Stock Purchase Agreement by and among Columbia/HCA Healthcare
                  Corporation, VH Holdings, Inc., Galen Holdings, Inc. and
                  Express Scripts, Inc., dated as of February 19, 1998, and
                  related Schedules (all Schedules, other than those relating to
                  the calculation of the Purchase Price [as defined therein] are
                  omitted from this filing, but will be filed with the
                  Commission supplementally upon request).

      99.1        Press release, dated February 20, 1998, by Express Scripts,
                  Inc.




                                  EXHIBIT 99.1


                      EXPRESS SCRIPTS ANNOUNCES AGREEMENT
                     TO PURCHASE VALUERX FROM COLUMBIA/HCA

          $445 MILLION TRANSACTION WILL CREATE LARGEST INDEPENDENT PBM
                 MANAGING MORE THAN $4.0 BILLION IN DRUG CLAIMS

     ST. LOUIS,  February 20, 1998 - Express Scripts,  Inc.  (NASDAQ:ESRX) today
announced that it has executed a definitive  agreement to purchase ValueRx,  the
pharmacy  benefit   management  (PBM)  subsidiary  of  Columbia/HCA   Healthcare
Corporation  (NYSE:COL).  The transaction  will make Express Scripts the largest
PBM independent of drug  manufacturer  ownership.  The combination  will enhance
Express  Scripts'  ability to meet the needs of clients and their  participants,
while  offering  greater  resources  in  advanced  clinical,   consultative  and
information services.

     Under the terms of the definitive agreement,  Express Scripts will purchase
ValueRx  from  Columbia/HCA  for  approximately   $445  million  in  cash.  This
transaction  will increase  network claims processed by approximately 75 percent
and would more than double mail service  prescriptions  processed  annually.  In
1997,  the combined  revenue of the two  companies was in excess of $2.7 billion
and the  combined  managed  annual  prescription  drug  spend was more than $4.0
billion.

     "We are confident that  combining the industry  expertise from ValueRx with
that of Express  Scripts  will create a stronger,  more  competitive  healthcare
management company," says Barrett Toan, president and chief executive officer of
Express  Scripts.  "By  growing in size and  strength,  we will be able to offer
enhanced services and generate  significant  economies of scale,  increasing our
value to customers, employees and shareholders."

     Historically,  the two companies  have served  different  market  segments.
ValueRx's customer base is comprised predominantly of employer groups, including
a number of Fortune 1000 companies,  and indemnity insurance  carriers.  Express
Scripts has focused on smaller group plans by building strong relationships with
third-party   administrators  and  select  managed  care   organizations.   This
transaction  brings  together the unique  strengths in serving these  distinctly
different  markets and provides the company with the resources and experience to
pursue new business in both segments.

     "We place great  importance  on ValueRx's  expertise in the employer  group
market,"  says Toan.  He explained  that clients will now have access to a broad
spectrum of  healthcare  management  services to improve the quality and cost of
healthcare for their members.  Specifically, he cited the benefits of additional
mail service and call center capacity,  increased access for clients and members
to  pharmacies   and  expanded   opportunities   to  work  with   pharmaceutical
manufacturers to optimize contracting and coordinate  formularies over a broader
book of business.

     Kevin  Roberg,  president  and CEO of ValueRx,  states,  "Over the past two
years,  the employees of ValueRx have worked hard to maintain high standards for
quality  service,  and  this  transaction  will  allow  them to  continue  their
dedication  to our  customers  and our  commitment  to  product  innovation  and
growth."

     Additionally,  the  combination  of Express  Scripts and ValueRx will allow
increased  investment in new products and services,  including  industry-leading
clinical services,  formulary  management and provider  profiling  capabilities.
"Through Express Scripts' subsidiary  Practice Patterns Science,  clients of the
combined company will have access to integrated medical information which can be
used to  better  manage  healthcare  quality  and  costs,"  adds  Barrett  Toan,
"ValueRx's  proprietary data warehouse and data mining  technology also provides
clients with capabilities to measure healthcare outcomes."

     Completion of the transaction is subject to customary  closing  conditions,
including required governmental  approvals,  expiration of the requisite waiting
period under the  Hart-Scott-Rodino  Antitrust  Improvements  Act and receipt of
funds by Express Scripts under a bank facility to be arranged by BT Alex.  Brown
& Sons  Incorporated,  Express  Scripts'  financial  advisor in the transaction.
Express Scripts expects the transaction  will be completed in the second quarter
of 1998. The company  anticipates  that the combination  will not be dilutive to
earnings per share in 1998 and will be accretive to earnings per share in 1999.

     Express  Scripts,  Inc. is a leader in  healthcare  management,  delivering
advanced capabilities in several complementary  healthcare  businesses.  Express
Scripts'  pharmacy  benefit  management   business  currently  provides  managed
prescription  drug  services  to more than 12.3  million  members  in the United
States and Canada and has  received  the highest  ranking  for overall  customer
satisfaction  in the last  two  annual  Pharmacy  Benefit  Management  Institute
surveys.   Practice  Patterns  Science,   Inc.  offers  healthcare   information
management services, linking healthcare data from all points of care. ESI Vision
Care is the company's  eyecare  management  business.  IVTx applies managed care
principles to infusion therapy  management.  Health Management Services provides
comprehensive  informed  decision  counseling  and disease  management  services
through  a 24-hour  call  center  staffed  by nurses  and  pharmacists.  Express
Scripts' businesses serve HMOs, third-party administrators, insurance companies,
unions and  self-insured  employers.  Express  Scripts is  headquartered  in St.
Louis.

     ValueRx is a leader in pharmacy  benefit  management  services and develops
clinical  programs  designed to positively  impact patient care,  while managing
overall  healthcare costs.  ValueRx provides its services to employers,  unions,
managed care organizations,  BlueCross and BlueShield plans,  insurance carriers
and public sector clients.

     THIS PRESS RELEASE CONTAINS FORWARD-LOOKING  STATEMENTS,  INCLUDING BUT NOT
LIMITED TO STATEMENTS RELATED TO THE COMPANY'S PLANS,  OBJECTIVES,  EXPECTATIONS
(FINANCIAL  AND  OTHERWISE) OR INTENTIONS.  THESE  STATEMENTS  INVOLVE RISKS AND
UNCERTAINTIES   THAT  MAY  CAUSE  THE   COMPANY'S   ACTUAL   RESULTS  TO  DIFFER
SIGNIFICANTLY  FROM THOSE PROJECTED OR SUGGESTED.  FACTORS THAT MAY IMPACT THESE
FORWARD-LOOKING STATEMENTS INCLUDE HIGHER THAN EXPECTED COSTS IN INTEGRATING AND
OPERATING THE COMBINED COMPANY; LOSS OF CLIENTS IN THE TRANSITION PROCESS; LOWER
THAN  EXPECTED  SALES AND REVENUE  GROWTH;  HEIGHTENED  COMPETITION;  CHANGES IN
PRICING OR DISCOUNT  PRACTICES OF PHARMACEUTICAL  MANUFACTURERS;  THE ABILITY OF
THE  COMPANY TO  CONSUMMATE  CONTRACT  NEGOTIATIONS  WITH  PROSPECTIVE  CLIENTS;
COMPETITION  IN THE BIDDING AND  PROPOSAL  PROCESS;  ADVERSE  RESULTS IN CERTAIN
LITIGATION  AND  REGULATORY  MATTERS;  THE ADOPTION OF ADVERSE  LEGISLATION OR A
CHANGE IN THE  INTERPRETATION  OF EXISTING  LEGISLATION  OR  REGULATIONS;  RISKS
ASSOCIATED WITH THE DEVELOPMENT OF NEW PRODUCTS;  AND OTHER RISKS DESCRIBED FROM
TIME TO TIME IN THE COMPANY'S  PUBLIC  FILINGS WITH THE  SECURITIES AND EXCHANGE
COMMISSION.



                                   EXHIBIT 2.1

                            STOCK PURCHASE AGREEMENT
                                  by and among
                      COLUMBIA/HCA HEALTHCARE CORPORATION,
                               VH HOLDINGS, INC.,
                              GALEN HOLDINGS, INC.
                                       and
                              EXPRESS SCRIPTS, INC.
                          Dated as of February 19, 1998

<PAGE>

                                TABLE OF CONTENTS
                                                                                

ARTICLE I DEFINITIONS 1

ARTICLE II PURCHASE AND SALE; CLOSING
    2.1      Sale of the Shares
    2.2      Excluded Assets and Liabilities; Certain Included Liabilities
    2.3      Purchase Price
    2.4      Closing
    2.5      Closing Deliveries

ARTICLE III REPRESENTATIONS AND WARRANTIES OF SELLERS
    3.1      Organization of Columbia, Holdings and Galen
    3.2      Organization and Capitalization of Value Health and MPN
    3.3      Organization and Capitalization of the Value Health Subsidiaries
    3.4      Corporate Authorization
    3.5      No Conflicting Agreements; Consents
    3.6      Financial Statements
    3.7      Absence of Undisclosed Liabilities
    3.8      Absence of Certain Changes
    3.9      Legal Proceedings, etc
    3.10     Certain Contracts
    3.11     Title to Property
    3.12     Employees; Labor Matters; Employee Benefit Plans; ERISA
    3.13     Bank Accounts
    3.14     Taxes
    3.15     Insurance
    3.16     Intellectual Property
    3.17     Compliance with Laws
    3.18     Environmental Conditions
    3.19     Brokers
    3.20     Operations of the Acquired Entities and the Excluded Subsidiaries
    3.21     AT&T Contract

ARTICLE IV REPRESENTATIONS AND WARRANTIES OF PURCHASER
    4.1      Organization
    4.2      Corporate Authorization
    4.3      No Conflicting Agreements; Consents
    4.4      Legal Proceedings, etc
    4.5      Brokers
    4.6      Investment Representations
    4.7      Financing

ARTICLE V COVENANTS OF SELLERS
    5.1      Regulatory Approvals
    5.2      Conduct Prior to the Closing
    5.3      Employee Matters
    5.4      Investigation by Purchaser
    5.5      Financial Statements and Reports
    5.6      Closing Conditions
    5.7      Material Contracts; Transactions with Affiliates
    5.8      Transfer of Assets
    5.9      Encumbrances
    5.10     Condition of Assets
    5.11     Consultative Process
    5.12     Intercompany Accounts
    5.13     Notice of Certain Occurrences
    5.14     Exclusivity
    5.15     Resignations
    5.16     Post Closing Non-Competition
    5.17     Sellers' Non-Solicitation
    5.18     Columbia Confidentiality Agreements

ARTICLE VI COVENANTS OF PURCHASER; CERTAIN ADDITIONAL  COVENANTS OF THE PARTIES
    6.1      Confidentiality
    6.2      Regulatory Approvals
    6.3      Books and Records
    6.4      Closing Conditions
    6.5      Notice of Certain Occurrences
    6.6      Employee Matters
    6.7      WARN Act Compliance
    6.8      Tax Matters
    6.9      Purchaser's Non-Solicitation
    6.10     Financing

ARTICLE VII CONDITIONS TO OBLIGATIONS OF PURCHASER
    7.1      Representations and Warranties
    7.2      Compliance with Agreement
    7.3      Closing Certificates
    7.4      Secretary's Certificates
    7.5      Opinion of Counsel
    7.6      Consents, Authorizations, Etc.
    7.7      No Action or Proceeding
    7.8      Certificates of Incorporation; Bylaws
    7.9      Resignation of Boards of Directors and Officers
    7.10     Good Standing Certificates
    7.11     Material Adverse Change
    7.12     Waiver of Conditions
    7.13     Trademark Acknowledgment Agreement
    7.14     Columbia PBM Agreement
    7.15     Financing
    7.16     MedManagement Agreement

ARTICLE VIII CONDITIONS TO OBLIGATIONS OF SELLERS
    8.1      Representations and Warranties
    8.2      Compliance with Agreement
    8.3      Closing Certificates
    8.4      Secretary's Certificate
    8.5      Opinion of Counsel
    8.6      Consent, Authorizations, Etc.
    8.7      No Action or Proceeding
    8.8      Good Standing Certificate
    8.9      Certificate of Incorporation; Bylaws
    8.10     Waiver of Conditions
    8.11     Trademark Acknowledgment Agreement
    8.12     MedManagement Agreement

ARTICLE IX INDEMNIFICATION
    9.1      Indemnification by Sellers
    9.2      Indemnification by Purchaser
    9.3      Claims Procedures
    9.4      Limitations on Claims
    9.5      Insured Losses

ARTICLE X TERMINATION
    10.1     Termination Events
    10.2     Effect of Termination

ARTICLE XI NOTICES
    11.1     Notices

ARTICLE XII MISCELLANEOUS
    12.1     Fees and Expenses
    12.2     Entire Agreement
    12.3     Waiver
    12.4     Amendment
    12.5     Counterparts; Facsimile Signatures
    12.6     No Third Party Beneficiary
    12.7     GOVERNING LAW, CONSTRUCTION
    12.8     Binding Effect
    12.9     No Assignment
    12.10    Headings, Gender, Etc.
    12.11    Public Announcement
    12.12    Access to Information
    12.13    Severability; Invalid Provisions
    12.14    Cooperation
    12.15    Further Assurance Clause

<PAGE>

                            STOCK PURCHASE AGREEMENT

     THIS STOCK PURCHASE AGREEMENT  ("AGREEMENT") is made and entered into as of
February 19, 1998, by and among COLUMBIA/HCA HEALTHCARE CORPORATION,  a Delaware
corporation ("COLUMBIA"),  VH HOLDINGS, INC., a Nevada corporation ("HOLDINGS"),
GALEN HOLDINGS, INC., a Nevada corporation ("GALEN"), and EXPRESS SCRIPTS, INC.,
a  Delaware  corporation  ("PURCHASER").   Columbia,   Holdings  and  Galen  are
hereinafter referred to collectively as the "SELLERS".

                                R E C I T A L S:

     WHEREAS, Holdings is a wholly-owned subsidiary of Columbia; and

     WHEREAS, Galen is an indirect wholly-owned subsidiary of Columbia; and

     WHEREAS,  Holdings  owns 100% of the  issued  and  outstanding  shares  (as
further  defined in Section  3.2(a)(ii),  the "VALUE HEALTH  SHARES") of capital
stock of Value Health, Inc., a Delaware corporation ("VALUE HEALTH"); and

     WHEREAS,  Galen owns 100% of the issued and outstanding  shares (as further
defined in Section  3.2(b)(ii),  the "MPN  SHARES") of capital  stock of Managed
Prescription Network, Inc., a Delaware corporation ("MPN"); and

     WHEREAS, Holdings and Galen wish to sell all of the Value Health Shares and
all of the MPN  Shares  respectively,  to  Purchaser,  and  Purchaser  wishes to
purchase  all of the Value  Health  Shares and the MPN Shares from  Holdings and
Galen  respectively,  on the  terms,  subject  to the  conditions  and  for  the
consideration set forth in this Agreement; and

     WHEREAS,  Columbia will derive material  benefits from the  consummation of
the transactions contemplated hereby, and wishes to enter into this Agreement as
an inducement to the other parties to enter into this Agreement;

     NOW,  THEREFORE,  in  consideration of the foregoing  premises,  the mutual
covenants and other  agreements  set forth  herein,  and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the
parties hereto covenant and agree as follows:

                                    ARTICLE I
                                   DEFINITIONS

     As used in this  Agreement,  the  following  defined  terms  shall have the
meanings indicated below and, where appropriate,  shall include the singular and
plural of the term defined:

     "ACQUIRED  ENTITIES" shall mean Value Health, the Value Health Subsidiaries
and MPN.

     "ACQUIRED ENTITIES PRO FORMA BALANCE SHEET" shall have the meaning ascribed
to it in Section 3.6(d).

     "ADJUSTMENT  SCHEDULE"  shall have the  meaning  ascribed  to it in Section
2.3(c).

     "AFFILIATE" shall mean any Person that directly,  or indirectly through one
or more intermediaries,  controls or is controlled by or is under common control
with the Person  specified;  provided that, except as used in the first sentence
of Section  9.1 (and other  provisions  of  Article  IX, to the extent  affected
thereby),  such  term  shall  not be  construed  to  include  NYLIFE  HealthCare
Management,  Inc.,  a Delaware  corporation,  or any Person  that  directly,  or
indirectly  through  one or  more  intermediaries,  controls  NYLIFE  HealthCare
Management, Inc.

     "AGREEMENT"  shall  mean  this  Stock  Purchase  Agreement,  including  the
exhibits and Schedules attached hereto.

     "BALANCE SHEET DATE" shall mean December 31, 1997.

     "BASE PURCHASE PRICE" shall mean $445,000,000.

     "BOOKS  AND  RECORDS"  shall  mean  all  existing   accounting,   business,
marketing, corporate, and other files, documents, instruments, papers, books and
records, including without limitation,  financial statements,  budgets, ledgers,
journals, deeds, titles, policies, manuals, minute books, stock certificates and
books, stock transfer ledgers, contracts,  franchises,  permits, supplier lists,
reports,  computer  files and data,  retrieval  programs and  operating  data or
plans.

     "BUSINESS DAY" shall mean a day other than Saturday,  Sunday, or any day on
which the  principal  commercial  banks located in the State of Tennessee or the
State of Missouri  are  authorized  or  obligated to close under the Laws of the
such states.

     "BYLAWS" shall mean the bylaws of the relevant  corporation,  as amended to
the relevant date.

     "CERTIFICATE OF INCORPORATION" shall mean the certificate of incorporation,
articles  of  incorporation,  charter or  similar  constituent  document  of the
relevant corporation, as amended to the relevant date.

     "CLAIM" shall have the meaning ascribed to it in Section 9.3.

     "CLOSING" shall mean the consummation of the  transactions  contemplated by
this Agreement as provided in Article II.

     "CLOSING DATE" shall have the meaning ascribed to it in Section 2.4.

     "CODE" shall mean the Internal  Revenue Code of 1986,  as amended,  and the
rules and regulations promulgated thereunder.

     "COLUMBIA"  shall  mean  Columbia/HCA  Healthcare  Corporation,  a Delaware
corporation.

     "COLUMBIA AFFILIATED GROUP" shall mean the affiliated group of corporations
(as defined in Section 1504(a) of the Code) of which Columbia is the parent.

     "COMPANY" shall mean the Acquired Entities taken as a whole.

     "COMPANY PLANS" shall mean each "employee benefit plan" (within the meaning
of Section  3(3) of ERISA) and each stock  purchase,  stock  option,  severance,
change-in-control,  fringe benefit, bonus, incentive,  deferred compensation and
other  employee  benefit  plan,  employment  (including  severance and change in
control) agreement, program, policy or other arrangement, whether or not subject
to ERISA (including any funding mechanism  therefor now in effect or required in
the future as a result of the  transactions  contemplated  by this  Agreement or
otherwise),  whether  formal  or  informal,  oral or  written,  under  which any
employee  or former  employee of any  Acquired  Entity has any present or future
right to benefits or under which any  Acquired  Entity has any present or future
liability;  provided,  however,  that  "Company  Plans"  shall not  include  any
Multiemployer Plan.

     "COMPANY PERMITS" shall have the meaning ascribed to it in Section 3.17.

     "CONFIDENTIALITY   AGREEMENT"  shall  mean  that  certain   Confidentiality
Agreement,  dated as of October 1, 1997,  as amended by those  certain  addenda,
dated as of November 19, 1997,  and  February  10,  1998,  between  Columbia and
Purchaser.

     "CONTRACT" shall mean any agreement, lease, sublease, license,  sublicense,
promissory note, evidence of indebtedness, or other contract (whether written or
oral) to which any of the Acquired Entities is a party or by which assets of any
of the Acquired Entities are bound.

     "CONTROLLED  GROUP"  shall  have  the  meaning  ascribed  to it in  Section
3.12(d).

     "COURT  ORDER"  shall  mean any  judgment,  order,  award or  decree of any
federal,  state, local or other court or judicial or quasi-judicial tribunal and
any award in any binding arbitration proceeding.

     "DAMAGES" shall mean any and all losses,  damages,  claims,  costs,  fines,
fees,  Taxes,  penalties,  interest  obligations  and  deficiencies  (including,
without limitation, reasonable attorneys fees and other expenses of litigation).

     "DESTRUCTION NOTICE" shall have the meaning ascribed to it in Section 6.3.

     "EFFECTIVE TIME" shall have the meaning ascribed to it in Section 2.4.

     "ENVIRONMENTAL  CLAIM"  shall  mean any  claim,  action,  cause of  action,
investigation  or notice  (written  or oral) by any  person  or entity  alleging
potential  liability  (including,  without  limitation,  potential liability for
investigatory  costs,  cleanup  costs,   governmental  response  costs,  natural
resources damages, property damages, personal injuries or penalties) arising out
of,  based  on  or  resulting  from  (a)  the  presence,  or  release  into  the
environment, of Hazardous Substances at any location which is or has been owned,
leased,  operated or utilized by the Company,  or (b) circumstances  forming the
basis of any violation, or alleged violation, of any Environmental Law.

     "ENVIRONMENTAL  LAWS" shall mean the federal,  state,  regional,  county or
local environmental laws, regulations, ordinances, rules and policies and common
law in effect on the date hereof and as of the  Effective  Time  relating to the
use, refinement, handling, treatment, removal, storage, production, manufacture,
transportation or disposal,  emission,  discharge, release or threatened release
of Hazardous Substances,  or otherwise relating to protection of human health or
the environment  (including,  without  limitation,  ambient air,  surface water,
ground water, land surface or subsurface  strata), as the same may be amended or
modified to the date hereof and as of the Effective Time.

     "ERISA" shall mean the Employee  Retirement Income Security Act of 1974, as
amended.

     "EXCHANGE ACT" shall mean the Securities  Exchange Act of 1934, as amended,
and the rules and regulations promulgated thereunder.

     "EXCLUDED ASSETS" shall have the meaning ascribed to it in Section 2.2.

     "EXCLUDED LIABILITIES" shall mean (a) all liabilities of Value Health which
do not  arise out of or relate to the  business  conducted  by the Value  Health
Subsidiaries or MPN other than those listed in SCHEDULE I(A) hereto,  (b) all of
the legal  proceedings  listed on SCHEDULE 3.9 as being handled by Value Health,
(c) any  obligations  of  Value  Health  arising  out of the  federal  or  state
securities  laws and  regulations  and (d) all  guarantees by Value Health other
than guarantees of obligations of any of the Value Health Subsidiaries.

     "EXCLUDED  SUBSIDIARIES"  shall have the meaning  ascribed to it in Section
2.2 "GAAP" shall mean  accounting  principles  generally  accepted in the United
States of America and consistently applied.

     "GALEN" shall mean Galen Holdings, Inc., a Nevada corporation.

     "GOVERNMENTAL   AUTHORITY"   shall  mean  any  national,   state  or  local
government,  any  political  subdivision  thereof  or  any  other  governmental,
quasi-governmental,  judicial, public or statutory  instrumentality,  authority,
body, agency,  department,  bureau, commission or entity, or any arbitrator with
authority to bind a party at law.

     "GROUPS" shall mean,  collectively,  the Columbia  Affiliated Group and the
Value Health Affiliated Group.

     "HAZARDOUS SUBSTANCES" shall mean any toxic or hazardous waste,  pollutants
or substances, including, without limitations, friable asbestos, polychlorinated
biphenyls,  petroleum  products,  byproducts,  or other hydrocarbon  substances,
substances  defined or listed as a  "hazardous  substance,"  "toxic  substance,"
"toxic pollutant" or similarly  identified  substance or mixture, in or pursuant
to any Environmental Law.

     "HOLDINGS" shall mean VH Holdings, Inc., a Nevada corporation.

     "HSR ACT" shall mean the  Hart-Scott-Rodino  Antitrust  Improvements Act of
1976, as amended, and the rules and regulations promulgated thereunder.

     "INDEMNIFYING PARTY" shall have the meaning ascribed to it in Section 9.3.

     "INDEMNITEE" shall have the meaning ascribed to it in Section 9.3.

     "INTELLECTUAL  PROPERTY"  shall have the meaning  ascribed to it in Section
3.16.

     "INTERIM  PURCHASE PRICE" shall have the meaning  ascribed to it in Section
2.3(b).

     "KNOWLEDGE OF PURCHASER" (and any similar  expression)  shall mean, as to a
particular  matter,  the actual  knowledge of any of the  following  officers of
Purchaser following  reasonable inquiry:  President and Chief Executive Officer;
General   Counsel;   any  Executive  or  Senior  Vice  President  and  the  Vice
President-Finance.

     "KNOWLEDGE  OF SELLERS"  (and any similar  expression,  including,  without
limitation,  the expression "of which Sellers have Knowledge") shall mean, as to
a particular  matter,  the actual knowledge of any of the following  officers or
their functional  equivalents of the following corporations following reasonable
inquiry:  (a)  Columbia:  Chief  Executive  Officer,  Senior Vice  President and
Controller,  General  Counsel,  President and any Vice President;  (b) Holdings:
Chief Executive Officer, General Counsel,  President and any Vice President; (c)
Value Health: Chief Executive Officer, Chief Financial Officer, General Counsel,
President and any Vice President;  (d) Value Rx Pharmacy Program,  Inc. (a Value
Health  Subsidiary):  Chief  Executive  Officer and  President;  Executive  Vice
President  and  Chief  Operating  Officer;   President,   Medication  Management
Division;  Senior  Vice  President  and Chief  Financial  Officer;  Senior  Vice
President,   Customer  Services  Division;   President,   Pharmaceutical  Trades
Division;   Senior  Vice  President  and  Chief  Clinical   Officer;   and  Vice
President-Human  Relations; (e) Galen: Chief Executive Officer, General Counsel,
President and any Vice President;  and (f) MPN: Chief Executive Officer, General
Counsel, President and any Vice President.

     "LAWS" shall mean all statutes,  laws,  ordinances,  regulations  and other
pronouncements  of any  Governmental  Authority  having the effect of law of the
United States,  any state or  commonwealth  of the United  States,  or any city,
county,  municipality,   department,   commission,   board,  bureau,  agency  or
instrumentality thereof.

     "LIABILITY  THRESHOLD"  shall have the  meaning  ascribed  to it in Section
9.4(a).

     "LIEN" shall mean any  mortgage,  pledge,  assessment,  security  interest,
lease,  sublease,  lien, adverse claim, levy, charge or other encumbrance of any
kind, or any  conditional  sale contract,  title  retention  contract,  or other
contract to give or to refrain from giving any of the foregoing.

     "MANAGEMENT  LETTER  AGREEMENTS"  shall  mean the letter  agreements  dated
February 18, 1998 between ValueRx Pharmacy  Program,  Inc. and certain employees
of the Company, which letter agreements are listed in Schedule 2.2(iv).

     "MATERIAL  ADVERSE  EFFECT"  shall  mean a material  adverse  effect on the
assets, financial position, operations or results of operations of the Company.

     "MEDMANAGEMENT"  shall  mean  MedManagement,  L.L.C.,  a  Delaware  limited
liability company, which is an Affiliate of Columbia and an Excluded Subsidiary.

     "MPN"  shall  mean   Managed   Prescription   Network,   Inc.,  a  Delaware
corporation.

     "MPN FINANCIAL STATEMENTS" shall have the meaning ascribed to it in Section
3.6(b).  "MPN  SHARES"  shall  have  the  meaning  ascribed  to  it  in  Section
3.2(b)(ii).

     "MULTIEMPLOYER PLAN" shall mean any "multiemployer plan" within the meaning
of Section  3(37) of ERISA  under which any  employee or former  employee of any
Acquired  Entity has any present or future  right to benefits or under which any
Acquired Entity or any of its subsidiaries has any present or future liability.

     "NEW SAVINGS PLAN" shall have the meaning ascribed to it in Section 6.6(b).

     "OTHER  TAX"  shall  mean  any  tax,  however  denominated,  including  any
interest, penalties or other additions to tax that may become payable in respect
thereof, imposed by any Governmental Authority, which tax is not included within
the definition of "Tax", including,  but not limited to, sales and use taxes, ad
valorem taxes,  excise taxes,  franchise  taxes,  gross receipt taxes,  business
license  taxes,  occupation  taxes and transfer  taxes,  and other  governmental
charges,  and other  obligations  of the same or a similar  nature to any of the
foregoing.

     "OUTPATIENT  PHARMACY BENEFIT  MANAGEMENT  BUSINESS" shall have the meaning
ascribed to it in Section 3.20.

     "PARTICIPANTS" shall have the meaning ascribed to it in Section 6.6(b).

     "PBGC" shall mean the Pension Benefit Guaranty Corporation.

     "PERMITS"   shall  mean  all   licenses,   permits,   franchises,   rights,
registrations,   approvals,   authorizations,   consents,  waivers,  exemptions,
releases,  variances or orders of, or filings with, or otherwise  issued by, any
Governmental Authority.

     "PERMITTED  LIEN" shall mean (a) any Lien approved in writing by Purchaser,
(b) any Lien for taxes or other  governmental  charges or assessments  which are
not delinquent, (c) any Lien of any landlord, carrier, warehouseman, mechanic or
materialman  and any like Lien  arising in the  ordinary  course of business for
sums that are not delinquent,  and (d) any Lien of the lessor or other financing
source on assets leased under a capitalized lease obligation.

     "PERSON" shall mean any natural person,  corporation,  general partnership,
limited  partnership,  limited liability  company,  union,  association,  court,
agency, government, tribunal,  instrumentality,  commission,  arbitrator, board,
bureau or other entity or authority.

     "PRE-CLOSING  PERIOD"  shall  have the  meaning  ascribed  to it in Section
6.8(b)(i).

     "PRELIMINARY  PAYMENT  AMOUNT"  shall have the  meaning  ascribed  to it in
Section 2.3(b).

     "PROCEEDING" shall have the meaning ascribed to it in Section 6.8(e).

     "PROHIBITED  ACTIVITY"  shall have the  meaning  ascribed  to it in Section
5.16.

     "PURCHASE  PRICE"  shall have the meaning  ascribed to it in SCHEDULE  I(B)
hereto.

     "PURCHASE  PRICE  ADJUSTMENT"  shall  have the  meaning  ascribed  to it in
SCHEDULE I(B).

     "PURCHASER" shall mean Express Scripts, Inc., a Delaware corporation.

     "PURCHASER   AFFILIATED   GROUP"  shall  mean  the   affiliated   group  of
corporations (as defined in Section 1504(a) of the Code) of which Purchaser is a
member.

     "PURCHASER  INDEMNITEE"  shall have the  meaning  ascribed to it in Section
9.1.

     "REAL PROPERTY" shall have the meaning ascribed to it in Section 3.18(b).

     "RETURNS"  shall  mean all  reports,  estimates,  declarations,  schedules,
disclosures,  information  statements and returns relating to, or required to be
filed in connection with, any Taxes.

     "SCHEDULE  2.2(IV)  OBLIGATIONS"  shall have the meaning  ascribed to it in
SCHEDULE I(B) hereto.

     "SECURITIES ACT" shall mean the Securities Act of 1933, as amended, and the
rules and regulations promulgated thereunder.

     "SELECTED  ACCOUNTING  FIRM"  shall  mean  Deloitte & Touche LLP or another
accounting  firm of  recognized  national  standing  acceptable to Purchaser and
Columbia.

     "SELLER GROUP" shall have the meaning ascribed to it in Section 5.16.

     "SELLER INDEMNITEE" shall have the meaning ascribed to it in Section 9.2.

     "SELLERS" shall mean, collectively, Columbia, Holdings and Galen.

     "SHARES" shall mean the MPN Shares and the Value Health Shares.

     "SPONSOR" shall have the meaning ascribed to it in Section 6.6(b).

     "STRADDLE  PERIOD"  shall  have  the  meaning  ascribed  to it  in  Section
6.8(b)(ii).

     "TAX" or "TAXES" shall mean all federal,  state and local income or profits
taxes, taxes measured by income, profits or earned surplus, payroll and employee
withholding taxes, unemployment insurance, social security taxes, and Washington
business  and  occupation  taxes,  including  any  interest,  penalties or other
additions  to tax that may become  payable in  respect  thereof,  imposed by any
Governmental Authority.

     "TAX  STATEMENT"   shall  have  the  meaning  ascribed  to  it  in  Section
6.8(b)(ii).

     "TRADEMARK  ACKNOWLEDGMENT AGREEMENT" shall mean a Trademark Acknowledgment
Agreement  by and among Value  Health,  each of the  Acquired  Entities and each
other  subsidiary of Value Health in a form  reasonably  acceptable to Purchaser
and Sellers,  which  agreement will embody the provisions  described in SCHEDULE
7.13  hereto  and  otherwise  contain  provisions   customary  with  respect  to
agreements of this type.

     "TRANSFER  ACCOUNTS"  shall mean the checking  accounts,  bank accounts and
similar  arrangements  maintained at any financial  institution  and used by the
Company in connection with Columbia's  cash  management  program;  the "Transfer
Accounts"  shall mean those  accounts  and  arrangement  into which the  Company
deposits  funds to be swept by the Columbia cash  management  system and not the
accounts into which the Columbia cash  management  system  deposits  funds to be
used by the Company.

     "VALUE HEALTH" shall mean Value Health, Inc., a Delaware corporation.

     "VALUE  HEALTH  AFFILIATED  GROUP"  shall  mean  the  affiliated  group  of
corporations  (as defined in Section  1504(a) of the Code) of which Value Health
was the parent for tax periods ending on or before August 5, 1997.

     "VALUE HEALTH FINANCIAL  STATEMENTS"  shall have the meaning ascribed to it
in Section 3.6(a).

     "VALUE HEALTH PRO FORMA BALANCE  SHEET" shall have the meaning  ascribed to
it in Section 3.6(c).

     "VALUE  HEALTH  SHARES"  shall have the  meaning  ascribed to it in Section
3.2(a)(ii).

     "VALUE  HEALTH  SUBSIDIARIES"  shall  have the  meaning  ascribed  to it in
Section 3.3(a).

     "VALUE HEALTH  SUBSIDIARY  SHARES" shall have the meaning ascribed to it in
Section 3.3(d).

     "VHI PLAN" shall have the meaning ascribed to it in Section 6.6(b).

     "WARN ACT" shall have the meaning ascribed to it in Section 6.7.


                                   ARTICLE II
                           PURCHASE AND SALE; CLOSING

     2.1 Sale of the  Shares.  On and  subject to the terms and  conditions  set
forth in this  Agreement,  at the  Closing,  (a)  Holdings  shall sell,  assign,
transfer and deliver to  Purchaser,  free and clear of all Liens,  and Purchaser
shall purchase from Holdings, the Value Health Shares, and (b) Galen shall sell,
assign,  transfer  and deliver to  Purchaser,  free and clear of all Liens,  and
Purchaser shall purchase from Galen,  the MPN Shares.  At the Closing,  title to
the Shares shall pass to Purchaser,  as record and beneficial  owner.  Purchaser
shall then be entitled  to all rights,  including,  without  limitation,  voting
rights, as the sole owner of such Shares, free and clear of all Liens.

     2.2  Excluded  Assets  and  Liabilities;   Certain  Included   Liabilities.
Notwithstanding  anything,  express or implied,  to the  contrary  contained  in
Section 2.1 or elsewhere  herein,  the following  assets and  liabilities of the
Acquired  Entities  are to be excluded  from the assets and  liabilities  of the
Acquired  Entities  being  acquired by or  transferred  to  Purchaser at Closing
through  Purchaser's  acquisition  of the  Shares:  (a) all Tax  accounts of the
Acquired Entities with any Governmental Authority; (b) the capital stock of, and
other equity  interests  owned directly or indirectly by Sellers in, each of the
corporations  and other entities  listed in SCHEDULE 2.2(I)  (collectively,  the
"Excluded  Subsidiaries");  (c) all Transfer Accounts;  (d) the Notes Receivable
listed in SCHEDULE  2.2(II);  (e) the assets of Value  Health that are listed in
SCHEDULE 2.2(III); and (f) the other assets of Value Health that are not related
to the assets or  operations of the Value Health  Subsidiaries  and that are not
reflected on the Acquired  Entities Pro Forma Balance Sheet.  With the exception
of  the  above-described   assets  (the  "Excluded  Assets")  and  the  Excluded
Liabilities,   the  Acquired  Entities  shall  retain  all  of  the  assets  and
liabilities  of the Acquired  Entities,  including,  without  limitation,  their
respective trade payables, operating liabilities,  guarantees, accrued expenses,
contingent  liabilities  and other  obligations.  Prior to the Closing,  Sellers
shall cause the Excluded Assets to be transferred to Holdings,  Galen or another
Person designated by Holdings or Galen by means of dividend or otherwise.  Prior
to the  Closing,  the  Company  will assume all  obligations  of Sellers and all
Affiliates  thereof, if any, under each of the agreements and other arrangements
listed or described  in SCHEDULE  2.2(IV),  which  agreements  and  arrangements
pertain to certain  bonus and severance  payments to which certain  employees of
the Company will be entitled under the conditions set forth therein.

     2.3 Purchase Price.

     (a) The consideration to be paid by Purchaser for the Shares (the "PURCHASE
PRICE") shall be an amount equal to the Base  Purchase  Price as adjusted by the
Purchase Price  Adjustment.  The Purchase  Price shall be allocated  between the
Value Health  Shares and the MPN Shares in  accordance  with the  provisions  of
SCHEDULE 2.3.

     (b) For purposes of  determining  the amount of cash to be delivered at the
Closing in accordance with Section 2.5(b),  a preliminary  determination  of the
Purchase Price (the  "PRELIMINARY  PAYMENT Amount") shall be made on or prior to
the  Closing  Date  using the  Company's  then  most  recent  monthly  financial
information.  Sellers shall  prepare such  preliminary  determination  and shall
deliver to  Purchaser a schedule  showing  the  calculation  of the  Preliminary
Payment Amount not less than two Business Days prior to the Closing Date.

     (c) Within 60 days after the Closing, Columbia shall deliver to Purchaser a
schedule (the "ADJUSTMENT SCHEDULE") setting forth Sellers' determination of the
Purchase Price based upon the Company's financial data as of the Effective Time.
After the Closing, Purchaser shall (i) permit representatives of Sellers, during
normal business  hours,  to have  reasonable  access to, and to examine and make
copies of, all books and records of the Company  which are in the  possession of
Purchaser or the Company for purposes of preparing the Adjustment Schedule,  and
(ii) cause the employees of the Company to cooperate with and assist Columbia in
the preparation of the Adjustment Schedule.

     (d)  Purchaser  may  object  to  any  of the  information  or  computations
contained in the Adjustment  Schedule which could affect the Purchase Price. Any
such  objection  must be made by delivery of a written  statement of  objections
(stating the basis of the objections  with  reasonable  specificity) to Columbia
within 30 days following  delivery of the Adjustment  Schedule to Purchaser.  If
Purchaser does not so object within such 30 day period, the Adjustment Schedule,
as  delivered  to  Purchaser,  shall be  considered  final and binding  upon the
parties.  In the event Purchaser and Columbia are unable to resolve a dispute or
disagreement  set forth in a written  objection  pursuant to this Section 2.3(d)
within 30 days of Columbia's receipt of such objection,  either party may elect,
by written notice to the other party, to have all such disputes or disagreements
resolved by the Selected  Accounting  Firm. The Selected  Accounting  Firm shall
determine the Purchase Price Adjustment and calculate the Purchase Price,  which
determination  of the Selected  Accounting  Firm shall be final and binding upon
the  parties.  The Selected  Accounting  Firm shall be  instructed  to use every
reasonable effort to perform its services within 15 days after submission of the
Adjustment  Schedule to it and, in any case, as soon as  practicable  after such
submission.  The parties will cooperate fully with the Selected Accounting Firm,
and shall  cause the Company to  cooperate  fully with the  Selected  Accounting
Firm, in connection with its  determination of the Purchase Price Adjustment and
calculation  of the Purchase  Price.  The costs and expenses for the services of
the Selected Accounting Firm shall be borne equally by Purchaser and Columbia.

     (e) Within ten days after the Purchase Price shall have been agreed upon or
otherwise  determined  pursuant to Section  2.3(d),  Columbia  (on behalf of the
Sellers) or Purchaser,  as appropriate,  shall pay the other party cash (by wire
transfer of immediately available funds) in the amount of the difference between
the Purchase Price and the Preliminary  Payment  Amount,  together with interest
thereon for a period from (and  including)  the Closing Date to (but  excluding)
the date of payment,  at the prime rate as quoted in the Money Rates  section of
THE WALL STREET JOURNAL from time to time.

     2.4 Closing.  The  closing of the  transactions  contemplated  by this
Agreement  (the  "CLOSING")  will take place at the  offices  of Waller  Lansden
Dortch & Davis,  a Professional  Limited  Liability  Company,  511 Union Street,
Suite  2100,  Nashville,  Tennessee,  or such other  place as shall be  mutually
agreed upon in writing by the parties  hereto,  at 10:00 a.m.,  Central Time, on
the earliest practicable Business Day following the satisfaction (or due waiver)
of the  conditions  set forth in Articles VII and VIII or such other date as may
be mutually  agreed  upon by the  parties  hereto but in no event later than the
last day of the calendar month in which such satisfaction or waiver occurs.  The
date on which the Closing  takes  place is  referred  to herein as the  "CLOSING
DATE." The Closing shall be deemed to occur at 11:59 p.m.,  Central Time, on the
Closing  Date or at such other time as shall be mutually  agreed upon in writing
by the parties hereto.  The time at which the transactions  contemplated  hereby
are deemed to become effective is referred to herein as the "EFFECTIVE TIME."


     2.5 Closing  Deliveries.  At the Closing,  the  following  events will
occur:

     (a) STOCK  CERTIFICATES.  Holdings  will deliver to Purchaser  certificates
representing the Value Health Shares and the Value Health  Subsidiary Shares and
Galen will deliver to Purchaser  certificates  representing the MPN Shares, such
certificates  representing the Shares to be duly endorsed or accompanied by duly
executed  blank  stock  powers,  as  appropriate.  Holdings  and Galen also will
deliver to Purchaser such  documentation  and other  information that reasonably
evidences the fact that the certificates for the Value Health Shares,  the Value
Health  Subsidiary  Shares  and the MPN Shares  represent  all of the issued and
outstanding  shares of capital stock of each such corporation.  Purchaser agrees
that,  to  the  extent  relevant,  lost  certificate  affidavits  and  indemnity
agreements  in form and  substance  reasonably  satisfactory  to  Purchaser  and
executed and delivered by Columbia shall constitute such reasonable evidence.

     (b)  PAYMENT  FOR  SHARES.  At the  Closing,  Purchaser  shall  deliver the
Preliminary  Payment Amount in immediately  available  funds by electronic  wire
transfer to an account designated by Sellers.

     (c) LEGAL OPINIONS.

          (i)  Sellers shall cause an original opinion of Waller Lansden Dortch
& Davis,a Professional Limited Liability Company,  counsel for Sellers,  to be
delivered to Purchaser as contemplated by Section 7.5; and

          (ii)  Purchaser  shall  cause an  original  opinion  of  Simpson
Thacher & Bartlett,  counsel for Purchaser,  to be delivered to Sellers as 
contemplated by Section 8.5.

                  (d)      CLOSING CERTIFICATES AND DOCUMENTS.

                           (i) Sellers shall deliver the other certificates and
documents required to be delivered by Sellers pursuant to Article VII; and

                           (ii)Purchaser shall deliver the other certificates
and documents required to be delivered by Purchaser pursuant to Article VIII.

                                   ARTICLE III
                    REPRESENTATIONS AND WARRANTIES OF SELLERS

     Sellers  jointly  and  severally  represent  and  warrant to  Purchaser  as
follows:

     3.1 Organization of Columbia, Holdings and Galen.

         (a) Columbia is a corporation duly organized,validly existing and in 
good standing under the Laws of the State of Delaware.

         (b) Holdings and Galen are corporations duly organized, validly 
existing and in good standing under the Laws of the State of Nevada. Holdings 
is a wholly-owned subsidiary of Columbia. Galen is an indirect
wholly-owned subsidiary of Columbia.

     3.2 Organization and Capitalization of Value Health and MPN.

         (a) VALUE HEALTH.

             (i) Value Health (A) is a corporation duly organized, validly
existing and in good standing under the Laws of the State of Delaware, 
(B) has the corporate power and authority to own or lease and to operate its 
assets and to conduct its business as currently conducted, and (C) is duly
qualified to transact business as a foreign corporation and is in good standing
in each of the jurisdictions listed in SCHEDULE 3.2(A) and is not required to 
be so qualified by the requirement of any Laws in any other jurisdiction except
where failure to be so qualified would not, either individually or in the 
aggregate, have a Material Adverse Effect.

             (ii) The  authorized  capital  stock of Value  Health  consists of
1,000  shares of common stock, $.01 par value per share, of which 1,000 shares 
(the "VALUE HEALTH SHARES") are issued and outstanding. The Value Health Shares
have been duly authorized and validly issued and are fully paid and 
non-assessable.

             (iii) (A)  Holdings  has good and  marketable  title to, and owns,
the Value  Health Shares, beneficially and of record, (B) the Value Health
Shares are free and clear of all Liens of any nature whatsoever, (C) Holdings 
has full voting power over the Value Health Shares, subject to no proxy, 
shareholders' agreement, voting trust or other agreement relating to the voting
of any of the Value Health Shares, and (D) other than this Agreement, there is
no agreement between Columbia or any of its subsidiaries (including Holdings) 
and any other Person with respect to the disposition of the Value Health Shares
or otherwise relating to the Value Health Shares.

              (iv) (A) no Person has any preemptive right to purchase any stock
or other securities of Value Health, (B) there are no outstanding securities or
other instruments of Value Health which are convertible into or exchangeable for
any shares of its capital stock, (C) other than the Value Health Shares, there
are no outstanding securities or other instruments of Value Health giving the 
owner or holder thereof the right to vote on any matters on which Value Health's
shareholders may vote, (D) there are no contracts, arrangements, commitments or
restrictions relating to the issuance, sale, transfer, purchase or obtaining of
capital stock or other securities or instruments of Value Health, and (E) there
is no existing option, warrant, right, call or commitment of any character
granted or issued by Value Health governing the issuance of shares of its
capital stock.

         (b) MPN.

             (i)  MPN (A) is a corporation duly organized, validly existing and
in good standing under the Laws of the State of Delaware, (B) has the corporate
power and authority to own or lease and to operate its assets and to conduct 
its business as currently conducted, and (C) is duly qualified to transact 
business as a foreign corporation and is in good standing in each of the 
jurisdictions listed in SCHEDULE 3.2(B) and is not required to be so qualified 
by the requirement of any Laws in any other jurisdiction except where failure 
to be so qualified would not, either individually or in the aggregate, have a 
Material Adverse Effect.

             (ii) The authorized capital stock of MPN consists of 1,000 shares 
of common stock, $1.00 par value per share, of which 1,000 shares (the "MPN 
SHARES") are issued and outstanding. The MPN Shares have been duly authorized 
and validly issued and are fully paid and non-assessable.

             (iii) (A)  Galen  has good  and  marketable  title  to,  and  owns,
the MPN  Shares, beneficially and of record, (B) the Galen Shares are free and 
clear of all Liens of any nature whatsoever, (C) Galen has full voting power 
over the MPN Shares, subject to no proxy, shareholders' agreement, voting trust
or other agreement relating to the voting of any of the MPN Shares, and 
(D) other than this Agreement, there is no agreement between Columbia or any of
its subsidiaries (including Galen) and any other Person with respect to the 
disposition of the MPN Shares or otherwise relating to the MPN Shares.

             (iv) (A) no Person has any preemptive right to purchase any stock
or  other securities of MPN, (B) there are no outstanding securities or other
instruments of MPN which are convertible into or exchangeable for any shares of
its capital stock, (C) other than the MPN Shares, there are no outstanding 
securities or other instruments of MPN giving the owner or holder thereof the 
right to vote on any matters on which MPN's shareholders may vote, (D) there 
are no contracts, arrangements, commitments or restrictions relating to the 
issuance, sale, transfer, purchase or obtaining of capital stock or other 
securities or instruments of MPN, and (E) there is no existing option, warrant,
right, call or commitment of any character granted or issued by MPN governing 
the issuance of shares of its capital stock.

     3.3 Organization and Capitalization of the Value Health Subsidiaries.

     (a)  SCHEDULE  3.3  contains  a  true,  complete  and  correct  list of all
subsidiaries,  direct or  indirect,  of Value  Health  other  than the  Excluded
Subsidiaries  (the "VALUE  HEALTH  SUBSIDIARIES").  Except for the Value  Health
Subsidiaries  and  the  Excluded  Subsidiaries,  neither  Value  Health  nor MPN
directly or indirectly owns, of record or beneficially,  any outstanding  equity
interests in any corporation, partnership, joint venture or other Person.

     (b)  Each  Value  Health  Subsidiary  (i)  is  a  corporation  (or  limited
partnership or other type of entity, as the case may be) duly organized, validly
existing and in good standing  under the laws of the state of its  organization,
as identified on SCHEDULE 3.3, (ii) has the corporate (or  partnership  or other
type of entity,  as the case may be) power and  authority to own or lease and to
operate its assets and to conduct its business as currently conducted, and (iii)
is duly  qualified  to  transact  business  as a  foreign  corporation  (or,  if
appropriate,  limited  partnership  or  other  type  of  entity)  and is in good
standing in each of the jurisdictions listed in SCHEDULE 3.3 and is not required
to be so  qualified  by the  requirement  of any Laws in any other  jurisdiction
except where failure to be so qualified would not, either individually or in the
aggregate, have a Material Adverse Effect.

     (c)  SCHEDULE  3.3 sets  forth  the  authorized  capital  stock  (or  other
authorized  capital) of each Value Health Subsidiary and indicates the number of
issued and outstanding  shares of capital stock of such Value Health  Subsidiary
(or, in the case of  non-corporate  Value Health  Subsidiaries,  the outstanding
equity issued by such Value Health  Subsidiary).  The shares of capital stock of
each Value Health  Subsidiary  have been duly  authorized and validly issued and
are fully paid and non-assessable.

     (d) (i) Value Health has good and marketable  title to, and owns,  directly
or  indirectly,  all of  the  outstanding  shares  of  capital  stock  or  other
outstanding equity securities of each Value Health Subsidiary (the "VALUE HEALTH
SUBSIDIARY  SHARES"),   beneficially  and  of  record;  (ii)  the  Value  Health
Subsidiary  Shares  are free and  clear of all Liens of any  nature  whatsoever,
(iii)  Value  Health  has full  voting  power over the Value  Health  Subsidiary
Shares,  subject to no proxy,  shareholders'  agreement,  voting  trust or other
agreement  relating to the voting of any of the Value Health Subsidiary  Shares,
and (iv) other than this Agreement,  there is no agreement  between  Columbia or
any of its  subsidiaries and any other Person with respect to the disposition of
the Value Health  Subsidiary  Shares or  otherwise  relating to the Value Health
Subsidiary Shares.

     (e) (i) no Person has any  preemptive  right to purchase any stock,  equity
interests or other securities of any Value Health Subsidiary,  (ii) there are no
outstanding securities or other instruments of any Value Health Subsidiary which
are convertible  into or exchangeable for any shares of its capital stock or any
other equity  securities,  (iii) other than the Value Health Subsidiary  Shares,
there are no  outstanding  securities or other  instruments  of any of the Value
Health  Subsidiaries giving the owner or holder thereof the right to vote on any
matters on which Value Health  Subsidiary  shareholders may vote, (iv) there are
no  contracts,  arrangements,   commitments  or  restrictions  relating  to  the
issuance,  sale,  transfer,  purchase  or  obtaining  of capital  stock or other
securities or  instruments of any Value Health  Subsidiary,  and (v) there is no
existing option,  warrant, right, call or commitment of any character granted or
issued by any Value Health  Subsidiary  governing  the issuance of shares of its
capital stock.

     3.4 Corporate Authorization.

     (a) The  execution,  delivery and  performance by Sellers of this Agreement
and the other agreements to be entered into by any of them pursuant to the terms
of  this  Agreement,  and  the  consummation  by  Sellers  of  the  transactions
contemplated hereby and thereby are within Sellers' respective corporate powers,
are not in  contravention  of the terms of Sellers'  respective  Certificates of
Incorporation  or Bylaws,  and have been duly  authorized  and  approved  by the
respective boards of directors of Sellers. No other corporate proceedings on the
part of  Columbia,  Holdings,  Galen,  or any Acquired  Entity are  necessary to
authorize the  execution,  delivery and  performance  by Sellers or any Acquired
Entity of this  Agreement  or the other  agreements  to be  entered  into by any
Seller or any Acquired Entity pursuant to the terms of this Agreement.

     (b) This  Agreement  has been duly and validly  executed  and  delivered by
Sellers,  and, as of the Closing, the other agreements to be entered into by any
Seller or any Acquired  Entity pursuant to the terms of this Agreement will have
been duly and validly  executed and delivered by such Seller or Acquired Entity,
as the case may be. This  Agreement  constitutes,  and upon their  execution and
delivery,  such other agreements will constitute,  the legal,  valid and binding
obligations  of Sellers  and any  Acquired  Entity  party  thereto,  enforceable
against  Sellers and any Acquired  Entity party thereto in accordance with their
respective  terms  (assuming  the valid  authorization,  execution  and delivery
hereof and thereof by Purchaser and any other unaffiliated third party thereto),
subject, in each case, to bankruptcy, insolvency, reorganization, moratorium and
similar laws of general application  relating to or affecting  creditors' rights
and  to  general  principles  of  equity,  including  principles  of  commercial
reasonableness, good faith and fair dealing.

     3.5 No  Conflicting  Agreements;  Consents.  Except  as set  forth  in
SCHEDULE 3.5, neither the execution and delivery of this Agreement or any of the
other  agreements  to be  entered  into by any  Seller  or any  Acquired  Entity
pursuant  to the  terms of this  Agreement  nor the  consummation  of any of the
transactions contemplated hereby or thereby will:

     (a) violate, conflict with, result in a breach or termination of the terms,
conditions or provisions of, constitute a default under, or entitle any party to
terminate or accelerate  (i) the respective  Certificates  of  Incorporation  or
Bylaws of Columbia,  Holdings,  Galen or any of the Acquired Entities,  (ii) any
Contract, except such violations, conflicts, breaches, defaults, terminations or
accelerations  which,  either  individually  or in the aggregate,  (A) would not
materially  impair the  ability of the  Sellers  and the  Acquired  Entities  to
perform their  respective  obligations  hereunder or under the other  agreements
contemplated  hereby to be entered  into by any of them or would not prevent the
consummation of the transactions  contemplated  hereby or thereby,  or (B) would
not cause a Material  Adverse Effect,  (iii) any Court Order to which any Seller
or any of the Acquired  Entities is a party or by which any Seller or any of the
Acquired Entities is bound, or (iv) any requirements of Law affecting any Seller
or any of the Acquired Entities, except such violations,  conflicts, breaches or
defaults of such  requirements  of Laws  which,  either  individually  or in the
aggregate,  (A) would not  materially  impair the ability of the Sellers and the
Acquired Entities to perform their respective obligations hereunder or under the
other agreements  contemplated hereby to be entered into by any of them or would
not prevent the consummation of the transactions contemplated hereby or thereby,
or (B) would not cause a Material Adverse Effect;

     (b) result in the creation or imposition of any Lien upon any of the assets
of any Acquired Entity (except for Permitted Liens); or

     (c) require a permit from, the approval,  consent or  authorization  of, or
the making by any Seller or any of the  Acquired  Entities  of any  declaration,
filing or registration with, any Governmental  Authority,  except as provided in
Section   5.1  or  Section  6.2  and  except  for  such   approvals,   consents,
authorizations,  declarations, filings or registrations, the failure of which to
be obtained or made (i) would not, individually or in the aggregate,  materially
impair the  ability  of the  Sellers to  perform  their  respective  obligations
hereunder or under the other agreements  contemplated  hereby to be entered into
by any of them or prevent  the  consummation  of the  transactions  contemplated
hereby or thereby, or (ii) would not cause a Material Adverse Effect.

     3.6 Financial Statements.

     (a)  SCHEDULE  3.6(A)  contains  copies of the  following:  (i) the audited
combined balance sheet of the Value Health Subsidiaries (plus  MedManagement) as
of December 31, 1996,  (ii) the  unaudited  combined  balance sheet of the Value
Health  Subsidiaries  (plus  MedManagement)  as of December 31, 1997,  (iii) the
audited  combined  statements  of  income  and cash  flows of the  Value  Health
Subsidiaries (plus MedManagement) for the year ended December 31, 1996, and (iv)
the  unaudited  combined  statement of income of the Value  Health  Subsidiaries
(plus  MedManagement)  for year ended December 31, 1997. Such balance sheets and
income  statements are referred to as the "VALUE HEALTH  FINANCIAL  STATEMENTS."
The Value Health Financial  Statements have been prepared from and in accordance
with the books and records of the Value Health  Subsidiaries and  MedManagement,
fairly  present in all material  respects the financial  position and results of
operations of the Value Health  Subsidiaries  and  MedManagement as of the dates
and for the periods  indicated,  and have been prepared in accordance  with GAAP
(except as may be indicated in such Value Health Financial Statements, the notes
thereto or SCHEDULE 3.6(A) hereto).

     (b) SCHEDULE  3.6(B)  contains  copies of the following:  (i) the unaudited
balance sheet of MPN as of December 31, 1996,  (ii) the unaudited  balance sheet
of MPN as of December 31, 1997,  (iii) the unaudited  statement of income of MPN
for the year ended December 31, 1996, and (iv) the unaudited statement of income
of MPN for the year ended  December  31, 1997.  Such  balance  sheets and income
statements are referred to as the "MPN FINANCIAL  STATEMENTS." The MPN Financial
Statements  have been prepared from and in accordance with the books and records
of MPN,  fairly  present in all  material  respects the  financial  position and
results of operations of MPN as of the dates and for the periods indicated,  and
have been prepared in  accordance  with GAAP (except as may be indicated in such
MPN Financial Statements, the notes thereto or SCHEDULE 3.6(B) hereto).

     (c) SCHEDULE 3.6(C) contains copies of the following: (i) the unaudited pro
forma combined balance sheet of the Value Health Subsidiaries as of December 31,
1997, and (ii) the unaudited pro forma combined statement of income of the Value
Health Subsidiaries for the year ended December 31, 1997. Such balance sheet and
income  statement  are  referred  to as the "VALUE  HEALTH  PRO FORMA  FINANCIAL
STATEMENTS." The Value Health Pro Forma Financial  Statements have been prepared
from  and  in  accordance  with  the  books  and  records  of the  Value  Health
Subsidiaries, fairly present in all material respects the financial position and
results of operations of the Value Health  Subsidiaries  as of the dates and for
the periods  indicated (on a pro forma basis  excluding the assets,  liabilities
and  income  statement  data  of  MedManagement),  and  have  been  prepared  in
accordance  with GAAP (except as may be indicated in such Value Health Pro Forma
Financial Statements, the notes thereto or SCHEDULE 3.6(C) hereto).

     (d) SCHEDULE  3.6(D)  contains a copy of the unaudited  pro forma  combined
balance  sheet of the Acquired  Entities as of December 31, 1997 (the  "ACQUIRED
ENTITIES PRO FORMA  BALANCE  SHEET").  The Acquired  Entities Pro Forma  Balance
Sheet has been  prepared  from the books and records of the  Acquired  Entities,
fairly presents in all material respects the financial  position of the Acquired
Entities,  as of the date indicated (on a pro forma basis excluding the Excluded
Assets and the Excluded  Liabilities),  and has been prepared in accordance with
GAAP  (except as may be indicated in such  Acquired  Entities Pro Forma  Balance
Sheet, the notes thereto or Schedule 3.6(d) hereto).

     3.7 Absence  of  Undisclosed  Liabilities.   Except  as  disclosed  in
SCHEDULE 3.7, the Company does not have any material  liabilities  of any nature
(whether  accrued,  absolute,  contingent or otherwise)  except for  liabilities
reflected or reserved  against in the Acquired  Entities Pro Forma Balance Sheet
and liabilities  incurred in the ordinary course of the Company's business since
the Balance Sheet Date.

     3.8 Absence of Certain Changes. Except as disclosed in SCHEDULE 3.8 or
as contemplated by Section 2.2 or Section 5.12 hereof,  since the
Balance Sheet Date:

     (a)  neither  Value  Health  nor MPN has  declared,  set  aside or paid any
dividend or made or agreed to make any other  distribution or payment in respect
of its capital stock or redeemed,  purchased or otherwise  acquired or agreed to
redeem, purchase or otherwise acquire any shares of its capital stock;

     (b) the Company has not  voluntarily  incurred any  liabilities  that under
GAAP would be required to be reflected on a balance sheet for the Company (other
than  current  liabilities  incurred  in the  ordinary  course  of its  business
consistent with past practice) in an aggregate amount in excess of $500,000;

     (c) the Company has not sold,  assigned or transferred any of its assets or
properties  except  dispositions or sales of inventory or obsolete  equipment in
the ordinary course of business;

     (d) the Company has not mortgaged, pledged or subjected to any Lien, any of
the assets or properties of the Company other than (i) Permitted  Liens, or (ii)
Liens incurred in the ordinary course of business  consistent with past practice
on assets and  properties  of the Company  having an original cost or fair value
(whichever is less) not exceeding $100,000 in the aggregate;

     (e) the Company has not made or suffered  any  termination  or amendment of
any material  Contract,  or canceled,  waived or modified any material  debts or
claims held by it, other than in the ordinary course of its business  consistent
with past practice;

     (f) the Company has not suffered any damage,  destruction or loss,  whether
or not covered by insurance, that has had or may have a Material Adverse Effect;

     (g)  the  Company  has  not  suffered  a  material  adverse  change  in its
operations, results of operations or financial condition (it being agreed by the
parties  hereto that a "material  adverse  change"  shall not include any change
resulting  from  (i)  changes  in  general  conditions,  including  economic  or
political  developments,   or  the  adoption  or  modification  of  Laws,  which
conditions  or Laws are  generally  applicable  to the economy or are  generally
applicable to the industries in which the Company  operates;  (ii) the Company's
disposition of the Excluded Assets as  contemplated by this Agreement;  or (iii)
the  occurrence  or  consequence  of any of the  potentially  adverse  events or
circumstances described in SCHEDULE 3.8(G)).

     (h) the  Company  has not made any  change  in its  accounting  principles,
practices or methodologies;

     (i) the  Company  has not (A)  made  any  general  increase  in the rate of
compensation  payable to any of its  employees,  other than normal and customary
increases  consistent  with past  practice  or  increases  that  otherwise  were
required by the Company's obligations pursuant to applicable Law or Contracts in
effect on the Balance Sheet Date, (B) made any increase in the  compensation  of
any of the Company's  employees  whose aggregate base salary with respect to the
year ended  December 31, 1997 exceeded  $75,000,  other than increases that were
required by the  Company's  obligations  pursuant to  Contracts in effect on the
Balance Sheet Date or (C) increased severance or termination  obligations to any
of its employees  (except (i)  increases  that are the result of increases to an
employee's  underlying  compensation  that  either  (A) are not  required  to be
disclosed  pursuant to this Section 3.8(i) or (B) are disclosed in SCHEDULE 3.8,
and (ii) increases described in or contemplated by SCHEDULE 2.2(IV) hereto);

     (j) except as  contemplated  by SCHEDULE  2.2(IV),  neither Sellers nor the
Company has entered into any employment, severance or termination agreement with
any of the employees of the Company; and

     (k) neither Columbia,  Holdings, Galen nor the Company has entered into any
agreement  or  arrangement,  or  made  any  other  commitment,  to do any of the
foregoing.

     3.9 Legal   Proceedings,   etc..  There  are  no  actions,   suits  or
proceedings pending, or to the Knowledge of Sellers, threatened against Columbia
or any of its  subsidiaries  (including  Holdings,  Galen or any of the Acquired
Entities) which,  either  individually or in the aggregate,  could reasonably be
expected to, or if decided  adversely,  would,  materially impair the ability of
Sellers or any Acquired Entity to perform their respective obligations hereunder
or under the other agreements  contemplated  hereby to be entered into by any of
them,  or could  reasonably  be  expected  to, or if decided  adversely,  would,
prevent the  consummation of the  transactions  contemplated  hereby or thereby.
Except as set forth in SCHEDULE 3.9, there are no actions,  suits or proceedings
pending,  or to the Knowledge of Sellers,  threatened against Columbia or any of
its subsidiaries  (including  Holdings,  Galen or any of the Acquired  Entities)
which, either individually or in the aggregate, could reasonably be expected to,
or if decided  adversely,  would,  cause a Material  Adverse Effect,  nor is any
Acquired Entity subject to any Court Orders which, either individually or in the
aggregate,  has had or may have a Material  Adverse Effect.  Except as otherwise
disclosed in SCHEDULE 3.9, neither Columbia,  Holdings,  Galen, nor any Acquired
Entity has received  written  notice from any  Governmental  Authority  that any
Acquired  Entity  is  the  target  of any  investigation  or  proceeding  by any
Governmental   Authority,   nor  to  the   Knowledge  of  Sellers  is  any  such
investigation or proceeding pending.

     3.10 Certain  Contracts.  Except as set  forth in  SCHEDULE  3.10,  the
Company is not in default  (nor would it be in default  with  notice or lapse of
time or both as a result of events that have occurred) under any Contract, which
default or defaults,  either  individually  or in the aggregate,  has had or may
have a Material  Adverse  Effect.  The Company has made  available  to Purchaser
customer lists and true and complete forms of all material Contracts relating to
those  clients or  suppliers  of the  Company  the loss of which has had, or may
have, a Material Adverse Effect.

     3.11 Title  to Property.  The Company is in  possession of and has good
title to, or has valid leasehold  interests in or valid rights under Contract to
use, all of the assets and  properties  used in or reasonably  necessary for the
conduct of its business,  including all assets and  properties  reflected on the
Acquired  Entities Pro Forma Balance Sheet and all of the assets and  properties
purchased or  otherwise  acquired by the Company  since the Balance  Sheet Date,
other than (a) assets or properties  disposed of since the Balance Sheet Date in
the  ordinary  course of business  consistent  with past  practice,  and (b) the
Excluded Assets.

     3.12 Employees; Labor Matters; Employee Benefit Plans; ERISA.

     (a) Except as set forth in SCHEDULE  3.12(A)  hereto,  the Company is not a
party to, or bound by, any collective  bargaining  agreement,  contract or other
agreement or understanding with a labor union or labor organization. There is no
unfair  labor  practice  or  labor  arbitration  proceeding  pending,  or to the
Knowledge of Sellers,  threatened  against the Company relating to its business,
except for any such  proceeding  which has not had, or would not  reasonably  be
expected to have, a Material Adverse Effect. To the Knowledge of Sellers,  there
are no  organization  efforts  with  respect to the  formation  of a  collective
bargaining  unit presently being made or threatened  involving  employees of the
Company.  There is no labor strike,  material slowdown or material work stoppage
or lockout actually pending or, to the Knowledge of Sellers,  threatened against
or affecting the Company,  and, to the Knowledge of Sellers, the Company has not
experienced any strike,  material  slowdown or material work stoppage or lockout
since November 1, 1995.

     (b)  SCHEDULE  3.12(B)  AND  SCHEDULE  2.2(IV)  contain  a list of each (i)
Multiemployer  Plan,  (ii) each  Company  Plan that is intended to be  qualified
within the meaning of Code Section 401(a) and (iii) each other material  Company
Plan.

     (c) With  respect to each  Company  Plan  listed in  SCHEDULE  3.12(B)  AND
2.2(IV),  Sellers have  delivered to Purchaser a current,  accurate and complete
copy (or, to the extent no such copy exists, an accurate description) of each of
the  following,  to the extent  applicable:  (i) any related trust  agreement or
other  funding  instrument;  (ii)  the  most  recent  determination  letter,  if
applicable;  (iii) any  summary  plan  description  and other  material  written
communications  provided over the past five years by any Acquired  Entity to its
employees  concerning  the extent of the  benefits  provided  under such Company
Plan;  and (iv) for the three most recent  years (A) the Form 5500 and  attached
schedules, (B) audited financial statements, (C) actuarial valuation reports and
(D) attorney's response to an auditor's request for information.

     (d) Except as disclosed in SCHEDULE 3.12(D), (i) each Company Plan has been
established and administered  substantially in accordance with its terms, and in
material compliance with the applicable  provisions of ERISA, the Code and other
applicable laws, rules and regulations;  (ii) each Company Plan that is intended
to be qualified  within the meaning of Code Section  401(a) has been operated in
material  compliance  with  such  qualification  provisions  of the Code and has
received a favorable  determination letter as to its qualification,  and nothing
has  occurred,  whether by action or failure to act,  that could  reasonably  be
expected to cause the loss of such  qualification;  (iii) no event has  occurred
and no condition exists that would subject any Acquired Entity,  either directly
or by reason  of its  affiliation  with any  member  of its  "CONTROLLED  GROUP"
(defined  as any  organization  which  is a  member  of a  controlled  group  of
organizations  within the meaning of Code Sections 414(b),  (c), (m) or (o)), to
any material tax, fine, lien,  penalty or other liability  imposed by ERISA, the
Code or other  applicable  laws,  rules and  regulations  with  respect  to each
Company Plan, or any pension plan that is maintained or sponsored by a member of
the  Controlled  Group,  that is intended to be qualified  within the meaning of
Code  Section  401(a),  and  neither  have  there  been any  reportable  events,
accumulated  funding  deficiencies,  or PBGC liens imposed with respect thereto;
(iv) for each Company Plan with respect to which a Form 5500 has been filed,  no
material  change has occurred  with  respect to the matters  covered by the most
recent Form since the date thereof;  (v) no "reportable  event" (as such term is
defined in ERISA  Section  4043) has  occurred  with respect to any Company Plan
that is subject  to Title IV of ERISA;  (vi)  neither  the  Sellers,  any of the
Acquired Entities, nor, to the Knowledge of Sellers, any other party in interest
has  engaged  in a  "prohibited  transaction"  (as such term is defined in ERISA
Section 406 and Code  Section  4975) with  respect to any Company Plan for which
there is no exemption  under ERISA  Section 408 or Code Section  4975;  (vii) no
"accumulated  funding  deficiency" (as such term is defined in ERISA Section 302
and Code Section 412  (whether or not waived)) has occurred  with respect to any
Company Plan that is subject to Code Section 412; and (viii)  except as required
by Title I, Part 6 of ERISA, no Company Plan provides  retiree welfare  benefits
and no  Acquired  Entity has any  obligations  to provide  any  retiree  welfare
benefits.

     (e) With  respect to each of the Company  Plans that is subject to Title IV
of ERISA,  as of the Closing Date,  the assets of each such Company Plan will be
at least equal in value to the then  current  present  value of the then current
accrued  benefits (vested and unvested) of the participants in such Company Plan
on a termination basis, based on the actuarial methods and assumptions  reported
to the PBGC in the standard termination filing.

     (f) With  respect to each  Multiemployer  Plan,  (i) neither  any  Acquired
Entity nor any member of their  Controlled  Group has  incurred  any  withdrawal
liability  under  Title IV of ERISA,  or to the  Knowledge  of Sellers  would be
subject to such liability if, as of the Closing Date, any Acquired Entity or any
member of their  Controlled  Group were to engage in a complete  withdrawal  (as
defined  in ERISA  Section  4203) or  partial  withdrawal  (as  defined in ERISA
Section  4205) from any such  Multiemployer  Plan;  and (ii) to the Knowledge of
Sellers no such  Multiemployer  Plan is in reorganization or insolvent (as those
terms are defined in ERISA Sections 4241 and 4245, respectively).

     (g) With respect to any Company  Plan,  no actions,  suits or claims (other
than routine claims for benefits in the ordinary  course) are pending or, to the
Knowledge of the Sellers, threatened.  Additionally, with respect to any Company
Plan, no facts or  circumstances  exist that  reasonably  could give rise to any
such  actions,  suits or claims  that could  reasonably  be  expected  to have a
Material  Adverse Effect.  Neither the Sellers nor any of the Acquired  Entities
has received any written or oral  communication  from the PBGC in respect of any
Company Plan subject to Title IV of ERISA  concerning  the funded  status of any
such  plan or any  transfer  of  assets  and  liabilities  from any such plan in
connection with the transactions contemplated hereby.

     (h) Except as  disclosed in SCHEDULE  2.2(IV),  no Company Plan exists that
could  result in the payment to any present or former  employee of any  Acquired
Entity of any money or other  property or accelerate or provide any other rights
or benefits to any present or former  employee of any Acquired  Entity or any of
its subsidiaries as a result of the transactions contemplated by this Agreement,
whether or not such  payment  would  constitute a parachute  payment  within the
meaning of Code Section 280G.

     3.13 Bank Accounts.  SCHEDULE 3.13 is a list of the names and locations
of all financial  institutions at which any Acquired Entity maintains a checking
account,  deposit  account,  securities  account,  safety  deposit  box or other
deposit or safekeeping  arrangement (including the Transfer Accounts),  the name
of the Acquired  Entity that maintains each such account or arrangement  and the
number or other means of identification of each such account and arrangement.

     3.14 Taxes.

     (a)  RETURNS  FILED AND TAXES  PAID.  Sellers or members of the Groups have
duly filed or cause to be filed,  or shall duly file or cause to be filed,  in a
timely  manner  (taking  into  account  all  extensions  of due dates)  with the
appropriate  Governmental Authorities all Returns which are required to be filed
on or before the Closing Date by or on behalf of the Acquired Entities. All such
Returns are correct and complete in all material respects. All Taxes shown to be
due on such Returns  filed prior to the date hereof have been paid in full,  and
all Taxes  shown to be due on such  Returns  filed after the date hereof will be
paid in full  within the time  permitted  under the Code.  Each of the  Acquired
Entities has withheld and paid over all Taxes required to have been withheld and
paid  over,  and  complied  with  all  the  information   reporting  and  backup
withholding  requirements,  in  connection  with  amounts  paid or  owing to any
employee,  creditor,  independent  contractor or other third party. There are no
Liens on any of the assets of the  Company  with  respect  to Taxes,  other than
Liens for Taxes not yet due and  payable or for Taxes  being  contested  in good
faith through appropriate proceedings.

     (b) TAX DEFICIENCIES,  AUDIT HISTORY. Except as set forth in SCHEDULE 3.14,
and  except  with  respect  to Tax  liabilities  of any  member of the  Columbia
Affiliated Group other than the Acquired Entities,  (i) no material deficiencies
for Taxes have been claimed,  proposed or assessed by any Governmental Authority
for which the  Company  may have any  liability,  (ii)  there are no  pending or
threatened  audits,  investigations  or claims for or relating  to any  material
liability in respect of Taxes,  and (iii) there are no matters under  discussion
with any  Governmental  Authorities  with  respect to Taxes that may result in a
material  additional  amount  of  Taxes  for  which  the  Company  may  have any
liability.  None of the Acquired  Entities has waived any statute of limitations
in respect  of Taxes or agreed to any  extension  of time with  respect to a Tax
assessment or deficiency.

     (c) FIRPTA. None of the Sellers is a "foreign person" as defined in Section
1445(f)(3) of the Code and Purchaser will not be required to withhold Tax on the
purchase  of the Shares by reason of Section  1445 of the Code and the  Treasury
regulations thereunder.

     (d) None of the Acquired  Entities  has filed a consent  under Code Section
341(f).  Except as set forth in SCHEDULE 3.14, none of the Acquired Entities has
made any  payments,  is  obligated  to make any  payments,  or is a party to any
agreement  that  under  certain  circumstances  could  obligate  it to make  any
payments  that will not be  deductible  under Code Section  280G.  Except as set
forth on SCHEDULE  3.14,  none of the Acquired  Entities has been a member of an
affiliated group filing a consolidated federal income tax return, other than the
Columbia  Affiliated Group and the Value Health  Affiliated  Group.  None of the
Acquired  Entities has any  liability for the Taxes of any Person other than the
Acquired Entities or other members of the Columbia Affiliated Group under Treas.
Reg. Section 1.1502-6 (or any similar provision of state, local or foreign law),
or as a  transferee  or  successor,  pursuant  to  any  Tax  sharing  agreement,
indemnification arrangement, or similar contract or arrangement, or otherwise.

     3.15 Insurance. SCHEDULE 3.15 includes a list of all material insurance
policies maintained by or for the benefit of any Acquired Entity, including fire
and extended  coverage and  casualty,  liability  and other forms of  insurance.
Sellers  shall use  commercially  reasonable  efforts to keep such  insurance or
comparable insurance in full force and effect until the Effective Time.

     3.16 Intellectual  Property. Except as set forth in SCHEDULE 3.16, each
Acquired  Entity owns or has the right to use (and  following  the Closing  will
continue to own or have the right to use) all patents,  trademarks, trade names,
service marks, trade secrets,  copyrights and other intellectual property rights
and licenses as are  necessary  to conduct its  business as currently  conducted
(the "INTELLECTUAL PROPERTY"),  free of all Liens except Permitted Liens. Except
as set forth in SCHEDULE 3.16, (a) to the Knowledge of Sellers,  no infringement
exists by any of the Acquired  Entities on the  intellectual  property rights of
any other Person that results in any way from the  operations of the  businesses
of the Company,  except such infringements  which, either individually or in the
aggregate,  would not have a Material Adverse Effect,  and (b) there has been no
notice for a Claim  against any of the Acquired  Entities  that its  operations,
activities or business  infringe any intellectual  property of any other Person.
Except as set forth in SCHEDULE  3.16,  (i) no Court Orders or  proceedings  are
pending, or to the Knowledge of Sellers, threatened, against any of the Acquired
Entities that challenge the validity of, or such Acquired Entity's  ownership of
or right to use, any of the Intellectual  Property, and (ii) to the Knowledge of
Sellers, there is no infringing use of any of the Intellectual Property owned by
any  Acquired   Entity  by  any  other  Person.   SCHEDULE   3.16(A)  lists  all
registrations  or applications  therefor with regard to  Intellectual  Property.
SCHEDULE  3.16(B) lists all material  software used by an Acquired  Entity under
license from a third party.

     3.17 Compliance  with Laws.  The  Acquired  Entities  hold all  Permits
applicable  to  their  respective  businesses,  including,  without  limitation,
applicable state resident and non-resident pharmacy licenses,  state and federal
controlled substance permits and state insurance licenses required by applicable
Law (the  "COMPANY  PERMITS"),  except where the failure to obtain such Permits,
either  individually  or in the  aggregate,  would not have a  Material  Adverse
Effect.  The Acquired  Entities are, and have been for the past three years,  in
compliance  with the terms of the Company  Permits,  except for such failures to
comply which, either individually or in the aggregate, would not have a Material
Adverse Effect. Except as set forth in SCHEDULE 3.17, the Acquired Entities are,
and have  been for the past  three  years,  in  compliance  with all Laws of any
Governmental Authority,  except where the failure to comply, either individually
or in the aggregate, would not have a Material Adverse Effect.

     3.18 Environmental Conditions. Except as set forth in SCHEDULE 3.18:

     (a) Each of the  Acquired  Entities is  currently,  and for the prior three
years has been, in compliance with all Environmental  Laws (except where failure
to be in compliance has not had or would not have a Material Adverse Effect);

     (b) No Acquired  Entity has stored any  Hazardous  Substances on any of the
real property owned or leased by it (the "REAL PROPERTY"),  except in compliance
with applicable Environmental Laws (except where failure to be in compliance has
not had or would not have a Material Adverse Effect);

     (c) No Acquired Entity has disposed of or released any Hazardous Substances
on any of the Real  Property,  except in  material  compliance  with  applicable
Environmental  Laws (except  where  failure to be in  compliance  has not had or
would not have a Material Adverse Effect);

     (d) No  Acquired  Entity has  received  any  written  communication  from a
Governmental  Authority  or any other  Person that  alleges  that such  Acquired
Entity is not in compliance with  Environmental  Laws or is otherwise subject to
liability relating to Environmental Laws;

     (e)  There is no  Environmental  Claim  pending  or,  to the  Knowledge  of
Sellers, threatened against any Acquired Entity; and

     (f) There  have been no  actions,  activities,  circumstances,  conditions,
events or  incidents,  including,  without  limitation,  the release,  emission,
discharge,  presence or disposal of any Hazardous  Substances,  that  reasonably
could form the basis of any  Environmental  Claim  against any Acquired  Entity,
except  Environmental  Claims which,  either  individually  or in the aggregate,
would not cause a Material Adverse Effect.

     3.19 Brokers.  Except for Merrill Lynch & Co., neither Columbia nor any
of its subsidiaries  (including any of the Acquired Entities) has paid or become
obligated to pay any fee or commission to any broker, finder or intermediary for
or on account of the transactions  contemplated by this Agreement.  The Acquired
Entities do not have,  and following the Closing the Acquired  Entities will not
have,  any financial  obligation  to Merrill Lynch & Co. in connection  with the
transactions contemplated by this Agreement.

     3.20 Operations of the Acquired Entities and the Excluded Subsidiaries

     (a)  The  Acquired  Entities  are  engaged  exclusively  in the  Outpatient
Pharmacy  Benefit  Management  Business.  For purposes of this Section 3.20, the
term "Outpatient  Pharmacy Benefit Management Business" means any and all of the
following:  (i) mail order pharmacy  services,  (ii) point of sale  prescription
drug claims  processing,  (iii) formulary  development or  administration,  (iv)
pharmacy  network   administration,   (v)  disease  management  services,   (vi)
pharmaceuticals   manufacturer   research  services,   (vii)  data  analysis  in
conjunction with the foregoing, and (viii) patient and client education programs
in connection with the foregoing.

     (b) To the  Knowledge  of Sellers,  none of the  Excluded  Subsidiaries  is
engaged in the Outpatient  Pharmacy  Benefit  Management  Business,  except that
certain of the  Excluded  Subsidiaries  are  engaged in  activities  of a nature
described in clauses  (vi),  (vii) and (viii) of  paragraph  (a) of this Section
3.20 and that certain of the Acquired Entities develop formularies in connection
with the delivery or management of health care  services,  but not in connection
with the activities  described in clauses (i), (ii) and (iv) of paragraph (a) of
this Section 3.20.

     3.21 AT&T Contract.  Following the Closing,  none of the Acquired  Entities
shall have any obligation to utilize the Value One NET Contract  Tariff (CT) No.
3602  with  AT&T nor will  any of the  Acquired  Entities  suffer  any  penalty,
surcharge,  refund  liability  or other  financial  liability as a result of not
utilizing such contract.


                                   ARTICLE IV
                   REPRESENTATIONS AND WARRANTIES OF PURCHASER

     Purchaser represents and warrants to Sellers as follows:

     4.1 Organization.  Purchaser is a corporation duly organized,  validly
existing and in good standing under the Laws of the State of Delaware.

     4.2 Corporate Authorization.

     (a) The execution,  delivery and performance by Purchaser of this Agreement
and the  consummation by Purchaser of the transactions  contemplated  hereby are
within  Purchaser's  corporate powers,  are not in contravention of the terms of
Purchaser's   Certificate  of  Incorporation  or  Bylaws,  and  have  been  duly
authorized  and  approved  by the  board of  directors  of  Purchaser.  No other
corporate  proceedings  on the part of  Purchaser  are  necessary  to  authorize
Purchaser's execution, delivery and performance of this Agreement.

     (b) This  Agreement  has been duly and validly  executed  and  delivered by
Purchaser. This Agreement constitutes the legal, valid and binding obligation of
Purchaser,  enforceable against Purchaser in accordance with its terms (assuming
the valid authorization, execution and delivery hereof by Columbia, Holdings and
Galen),  subject  to  bankruptcy,  insolvency,  reorganization,  moratorium  and
similar laws of general application  relating to or affecting  creditors' rights
and  to  general  principles  of  equity,  including  principles  of  commercial
reasonableness, good faith and fair dealing.

     4.3 No  Conflicting  Agreements;  Consents.  Neither the execution and
delivery  of this  Agreement  nor the  consummation  of any of the  transactions
contemplated hereby will:

     (a) violate,  conflict with, result in a breach of the terms, conditions or
provisions   of,  or  constitute  a  default  under  (i)  the   Certificate   of
Incorporation  or Bylaws of  Purchaser,  (ii) any  agreement,  lease,  sublease,
license, sublicense, promissory note, evidence of indebtedness or other contract
(whether  written or oral) to which assets of Purchaser  are a party or by which
Purchaser  is bound,  except such  violations,  conflicts,  breaches or defaults
which, either individually or in the aggregate,  would not materially impair the
ability of Purchaser to perform its  obligations  hereunder or would not prevent
the consummation of the transactions  contemplated hereby, (iii) any Court Order
to which  Purchaser  is a party  or by which  Purchaser  is  bound,  or (iv) any
requirements  of Law affecting  Purchaser,  except such  violations,  conflicts,
breaches or defaults of such requirements of Laws which,  either individually or
in the  aggregate,  would not  materially  impair the  ability of  Purchaser  to
perform its obligations hereunder or which would not prevent the consummation of
the transactions contemplated hereby; or

     (b) require a permit from, the approval,  consent or  authorization  of, or
the making by Purchaser of any  declaration,  filing or  registration  with, any
Governmental  Authority,  except as  provided  in Section 6.2 or Section 5.1 and
except for such approvals, consents,  authorizations,  declarations,  filings or
registrations,  the failure of which to be  obtained  or made would not,  either
individually or in the aggregate,  materially impair the ability of Purchaser to
perform  its   obligations   hereunder  or  prevent  the   consummation  of  the
transactions contemplated hereby.

     4.4 Legal   Proceedings,   etc..  There  are  no  actions,   suits  or
proceedings  pending  or, to the  Knowledge  of  Purchaser,  threatened  against
Purchaser  which,  either  individually  or in the aggregate,  would  materially
impair the ability of  Purchaser to perform its  obligations  hereunder or could
reasonably  be  expected  to  prevent  the   consummation  of  the  transactions
contemplated hereby.

     4.5 Brokers.  Except  for  BT  Alex.  Brown  Incorporated  ("BT  Alex.
Brown"), Purchaser has not paid or become obligated to pay any fee or commission
to any  broker,  finder or  intermediary  for or on account of the  transactions
contemplated by this Agreement.

     4.6 Investment Representations.

     (a)  Purchaser is  acquiring  the Shares for its own account and not with a
view to the distribution thereof within the meaning of the Securities Act.

     (b)  Purchaser  is not  relying  upon any  representation  or  warranty  of
Sellers, any of their Affiliates or any of the officers,  directors,  employees,
agents  or  representatives   thereof,  except  for  those  representations  and
warranties  set  forth in this  Agreement,  any  other  agreements  contemplated
hereby,  the  Schedules  hereto  and such  certificates  and  other  instruments
required to be delivered pursuant to the terms hereof.

     (c) Purchaser has such  knowledge and  experience in financial and business
matters as to be capable of evaluating  the merits and risks of  purchasing  the
Shares and to understand the risks of, and other considerations relating to, its
purchase of the Shares.

     (d) Purchaser is aware that as of the Closing Date,  (i) the Shares and the
Value  Health  Subsidiary  Shares  will  not  have  been  registered  under  the
Securities Act or any state's  securities laws, and (ii) no securities issued by
any of the Acquired  Entities will be subject to the reporting  requirements  of
the  Exchange  Act.   Purchaser   further   understands  that  the  certificates
representing the Shares and the Value Health  Subsidiary  Shares will include an
appropriate  legend to the effect that such  securities have not been registered
under the Securities Act or any state's securities laws and that such securities
may not be sold or transferred  except in compliance with the Securities Act and
applicable state securities laws.

     4.7 Financing.  Purchaser has internally  generated funds available to
be applied to the Purchase  Price of not less than  $100,000,000.  Purchaser has
delivered  to  Columbia a true and  correct  copy of a  commitment  letter  from
Bankers Trust Company to provide debt financing in the amount of $380,000,000 in
the  aggregate  to provide  Purchaser  with all  remaining  funds  necessary  to
consummate the transaction contemplated hereby (the "Commitment Letter").

                                    ARTICLE V
                              COVENANTS OF SELLERS

     5.1 Regulatory  Approvals.  Sellers will,  and will cause the Acquired
Entities to, (a) use commercially  reasonable  efforts to obtain, as promptly as
practicable,  each of the Permits,  approvals,  authorizations and clearances of
Governmental  Authorities listed in SCHEDULE 5.1 hereto, and to make the filings
and declarations  with Governmental  Authorities  listed in SCHEDULE 5.1 hereto,
(b) provide such  information  and  communications  to  applicable  Governmental
Authorities necessary in connection with the foregoing or in connection with the
Purchaser's obtaining any Permits,  approvals,  authorizations and clearances of
Governmental Authorities or making any filings or declarations with Governmental
Authorities in accordance with Section 6.2 as such  Governmental  Authorities or
Purchaser may reasonably request,  and (c) cooperate with Purchaser in obtaining
or making,  as soon as  practicable,  any  Permits,  approvals,  authorizations,
clearances,  filings and declarations of or with  Governmental  Authorities that
Purchaser is required to obtain pursuant to Section 6.2.  Additionally,  Sellers
will  use  commercially  reasonable  efforts  to  make a  filing  and to  assist
Purchaser  in making  its  filing,  of a  pre-merger  notification  report  form
pursuant to the HSR Act on or before March 4, 1998.

     5.2 Conduct  Prior to the  Closing.  On or after the date  hereof  and
prior to the  Closing,  except as  disclosed in SCHEDULE 5.2 hereto or otherwise
consented to or approved in writing by an authorized  officer of Purchaser or as
contemplated by Section 2.2 or Section 5.12 of this Agreement:

     (a)  Sellers  shall not act or omit to act,  and shall  cause the  Acquired
Entities  not to act or omit to act,  otherwise  than  in  accordance  with  the
following:

          (i) None of the Acquired Entities shall amend its respective 
Certificate of Incorporation or Bylaws (or limited partnership agreement or 
other constituent document, as the case may be);

          (ii) No change  shall be made in the number of shares of authorized 
or issued capital stock (or other authorized capital) of any of the Acquired
Entities; nor shall any option,  warrants, call, right, commitment or agreement
of any character be granted or made by any of the Acquired Entities relating to
the capital stock or other securities of such Acquired Entity; nor shall any of
the  Acquired  Entities  issue,  grant or sell  any  securities or  obligations
convertible into or exchangeable for shares of its capital stock, nor shall any
Seller enter into or permit any of the Acquired Entities to enter into any other
agreement  with  respect to any  capital  stock of such  Acquired  Entity or any
security  convertible  into  or  relating  to any  capital  stock  of any of the
Acquired Entities;

         (iii)  Neither  Value Health nor MPN shall declare or pay dividends or
make any other distributions in respect of its capital stock except as provided
at Section 2.2 or 5.8;

         (iv)  Sellers will not change or permit any change to be made in any
accounting policy, practice or method of the Company; and

         (v) The Acquired Entities will not (A) incur any indebtedness, other
than indebtedness not exceeding $500,000 in the aggregate;(B) assume,  guaranty,
endorse or otherwise  become liable or  responsible  for the  obligations of any
Person  other than  another  Acquired  Entity;  (C) make any loans,  advances or
capital  contributions  to, or investments in, any other Person; or (D) make any
commitments to do any of the foregoing.

         (vi) None of the Acquired Entities will make any Tax elections that
could adversely affect the Company's Tax obligations with respect to any 
Post-Closing Period.

         (vii) Sellers shall not, and shall not permit any of the Acquired
Entities to, settle any claim, action or proceeding if such settlement would
impose obligations or restrictions on an Acquired Entity that could result in a
Material  Adverse  Effect or that otherwise would  subject any of the Acquired
Entities to injunctive or similar relief that would remain in effect following
the Effective Time.

         (viii) None of the Acquired Entities shall enter into any Contracts
under which an Acquired  Entity is to be paid on a capitated basis or would be
subject to financial risk exceeding 5% of the drug ingredient cost thereunder.

         (ix) Sellers will not, and will not permit any of the Acquired Entities
to, amend or terminate  any of the  Management  Letter  Agreements or pay any of
the Schedule 2.2(iv) Obligations other than as required under the terms of
agreements and arrangements  referred to in Schedule 2.2(iv) as in effect on the
date hereof  (including bonus payments in respect of the year ended December 31,
1997).

     (b) Sellers shall use commercially reasonable efforts not to act or omit to
act;  and shall  cause the  Acquired  Entities  to use  commercially  reasonable
efforts  not to act or omit to  act,  otherwise  than  in  accordance  with  the
following:

         (i) The  business operations, activities and practices of the Acquired
Entities shall be conducted  consistent with the ordinary course of business and
in conformity with past practice;

         (ii) The respective business organizations of the Acquired Entities
will be preserved intact, and the services of the present employees, agents and
representatives of the Acquired Entities will be kept available for Purchaser
(except with respect to those employees or relationships terminated for cause);
and

         (iii) The relationships with, and the goodwill of, the customers of the
Acquired  Entities  and  others  having  business  relations  with the  Acquired
Entities will be preserved.

     5.3 Employee   Matters.  Pending  the  Closing,  except  as  otherwise
consented to or approved in writing by an authorized  officer of Purchaser or as
otherwise provided in SCHEDULE 5.3(A) hereto, Sellers will cause the Company not
to (a) make any general  increase in the rate of compensation  payable to any of
its employees,  other than normal and customary  increases  consistent with past
practice or increases that  otherwise may be required the Company's  obligations
pursuant  to  Contracts  or  applicable  Law,  (b)  make  any  increase  in  the
compensation  (including  bonus  or  incentive  awards)  of any  employee  whose
aggregate  base salary with respect to the year ended December 31, 1997 exceeded
$75,000,  (c)  increase  severance  or  termination  obligations  to  any of its
employees  (except  (i)  increases  that  are  the  result  of  increases  to an
employee's  underlying  compensation  that are permitted under this Section 5.3,
and (ii) increases described in or contemplated by SCHEDULE 2.2(IV) hereto), (d)
enter into any  employment,  severance or termination  agreement with any of its
employees,  or (e) except as contemplated by SCHEDULE  2.2(IV) hereto or Section
6.6,  amend or terminate any Company Plan or adopt or enter into any new plan or
agreement that would be a Company Plan if it existed on the date hereof.

     5.4 Investigation by Purchaser.

     (a) Sellers will provide  Purchaser and its counsel,  accountants and other
representatives  with reasonable  access during normal business hours, to all of
the assets, properties, facilities, employees, agents, accountants and Books and
Records  of  any   Acquired   Entity  and  will  furnish   Purchaser   and  such
representatives   during  such  period  with  all  such   information  and  data
(including,  without limitation,  copies of Contracts)  concerning the business,
operations or affairs of any Acquired  Entity in the possession of any Seller or
any Acquired Entity or under their control as Purchaser or such  representatives
reasonably  may  request;   provided,   however,  such  investigation  shall  be
coordinated  through  either Mr.  Jeffrey D. Stone,  Assistant Vice President of
Columbia,  or Mr. Gary  Blackford,  Executive Vice President and Chief Operating
Officer of ValueRx Pharmacy Program, Inc., or other persons as may be designated
in writing by Columbia for such purpose.

     (b) Sellers will use commercially  reasonable efforts to cause Purchaser to
be given such access to the  Company's  customers  as Purchaser  reasonably  may
request; provided,  however, such access shall be coordinated through Mr. Stone,
Mr. Blackford or Mr. Kevin Roberg,  Chief Executive  Officer of ValueRx Pharmacy
Program,  Inc.,  or such other person as may be  designated by Columbia for such
purpose and shall be implemented with one or more representatives of Columbia or
the Company.

     5.5 Financial Statements and Reports. As soon as practicable following
the end of each month (and each fiscal  year) from and after the date hereof and
prior to the Closing Date,  Sellers will deliver to Purchaser  true and complete
copies of the unaudited balance sheets and the related  unaudited  statements of
income of Value  Health and the Value  Health  Subsidiaries  (on a  consolidated
basis) and of MPN for each  month  (and each  fiscal  year)  then  ended,  which
financial  statements  shall have been prepared from and in accordance  with the
Books and Records of Value Health and the Value Health  Subsidiaries and of MPN,
respectively,  and which shall fairly  present,  in all material  respects,  the
financial  position  and  results of  operations  of Value  Health and the Value
Health  Subsidiaries (on a consolidated basis) and of MPN,  respectively,  as of
the date and for the period indicated.

     5.6 Closing Conditions. Sellers will use their commercially reasonable
efforts to cause each of the conditions set forth in Article VII to be satisfied
as soon as reasonably practicable,  but in all events on or prior to the Closing
Date.

     5.7 Material Contracts; Transactions with Affiliates.

     (a) From and after the date hereof and until the Closing, the Company shall
not, and Sellers shall not permit the Company to, enter into, become a party to,
waive any  material  right under or cancel,  any material  Contract  without the
prior written consent of Purchaser, except in the ordinary course of business or
as  contemplated  by this  Agreement.  Sellers will, and will cause the Acquired
Entities to, give prompt  notice to  Purchaser of any of the  following of which
Sellers have Knowledge:  (i) any notice of, or other communication  relating to,
any actual or alleged termination,  or actual or threatened material default, by
any Acquired  Entity  subsequent to the date of this  Agreement and prior to the
Closing Date under any client  Contract or under any other  material  indenture,
instrument or agreement to which the Acquired  Entity is a party or by which the
Acquired Entity is bound, (ii) any notice or other  communication from any third
party  alleging  that the  consent of such third  party is or may be required in
connection with the  transactions  contemplated by this Agreement,  or (iii) any
notice or other  communication from a customer of an Acquired Entity terminating
or giving notice of any future  termination of the customer's  contract with the
Acquired Entity.

     (b) From and  after  the date  hereof  and  until  the  Closing,  except as
expressly  contemplated by this Agreement,  the Acquired Entities shall not, and
Sellers shall not permit the Acquired Entities to, enter into, become a party to
or engage in any  contract  or  transaction  with any  Affiliates  of any of the
Acquired Entities without the prior written consent of Purchaser.

     5.8 Transfer  of Assets.  From and after the date hereof and until the
Closing,  Sellers  shall  cause the Company not to sell or dispose of any of its
assets or properties without the prior written consent of Purchaser,  except for
(a)  dispositions  of the Excluded Assets as contemplated by Section 2.2, or (b)
dispositions or sales of inventory or obsolete  equipment in the ordinary course
of  business.  Notwithstanding  the  foregoing  or  the  provisions  of  Section
5.2(a)(iii),  the Company may pay  dividends  or make  distributions  of current
assets in respect of its capital stock.

     5.9 Encumbrances.  From  and  after  the date  hereof  and  until  the
Closing,  Sellers  shall not  permit  the  Company  to enter  into or assume any
mortgage,  pledge, conditional sale or other title retention agreement or permit
any Lien to  attach  upon any of its  assets,  whether  now  owned or  hereafter
acquired, except for (i) Permitted Liens, or (ii) Liens incurred in the ordinary
course of business and in conformity with past practice on assets and properties
of the Company  having an original  cost or fair value  (whichever  is less) not
exceeding $100,000 in the aggregate.

     5.10 Condition  of Assets. From and after the date hereof and until the
Closing,  Sellers shall use commercially reasonable efforts, and shall cause the
Company to use  commercially  reasonable  efforts,  to maintain and keep in good
order, subject to ordinary wear and tear, all leasehold improvements, inventory,
machinery, equipment and other tangible personal property owned or leased by the
Company and used in connection with the operation of the Company's business.

     5.11 Consultative Process. From and after the date hereof and until the
Closing, Purchaser shall designate an individual or individuals whom Sellers may
contact  during normal  business  hours for the purpose of approving  actions or
transactions  for  which  the  consent  of  Purchaser  is  required  under  this
Agreement.  The written  approval of a designated  individual as contemplated in
this Section 5.11 shall  constitute the consent of Purchaser to the  transaction
or action so approved. Failure of a designated individual to respond within five
Business  Days of receipt of a written  request for such  approval (two Business
Days with  respect to any  approvals  under clause  (viii) of  paragraph  (a) of
Section 5.2) shall  constitute  the consent of Purchaser to the  transaction  or
action in  question.  Unless and until  Purchaser  gives  written  notice to the
Sellers to the contrary,  such designated  individuals shall be David Lowenberg,
Senior  Vice  President,  Site  Administration,  and  George  Paz,  Senior  Vice
President and Chief Financial Officer.

     5.12 Intercompany  Accounts.  Except  as  otherwise  provided  in  this
Agreement, including without limitation Section 2.2, and except for amounts of a
type  reflected  as an  account  receivable  or trade  payable  on the  Acquired
Entities Pro Forma Balance Sheet,  and except as otherwise  provided in SCHEDULE
5.12,  at or prior to the Closing,  (a) all  indebtedness  and other amounts (i)
owed by  Columbia,  Holdings,  Galen or any of their  Affiliates  (other than an
Acquired  Entity) to an Acquired  Entity or (ii) owed by an  Acquired  Entity to
Columbia,  Holdings,  Galen or any of their  Affiliates  (other than an Acquired
Entity) shall be paid, canceled or eliminated (whether or not then due), and (b)
all Liens  relating to any of the  aforesaid  indebtedness  or amounts  shall be
canceled and shall be discharged of record and (c) all arrangements  calling for
the transfer of funds by any Acquired  Entity in connection with Columbia's cash
management program shall be terminated as of the Closing.

     5.13 Notice  of Certain  Occurrences.  Sellers  will  notify  Purchaser
promptly in writing of, and  contemporaneously  will provide Purchaser with true
and complete  copies of any and all material  information or documents  relating
to, any event,  transaction  or  circumstance  occurring  of which  Sellers have
Knowledge  that causes or would cause any covenant or agreement of Sellers under
this  Agreement  to be  breached,  or that  renders or would  render  untrue any
representation  or warranty of Sellers  contained  in this  Agreement as if such
representation  or  warranty  were  made on or as of the  date  of  such  event,
transaction or circumstance.

     5.14 Exclusivity. From the date hereof until the earlier of the Closing
or the termination of this Agreement, Sellers agree that neither Sellers nor any
Affiliate   thereof  nor  any  of  their  respective   officers,   directors  or
representatives  will,  (a)  negotiate  with any other Persons with respect to a
sale,  merger,  consolidation,  reorganization  or  other  business  combination
pursuant to which the stock,  assets or business of any Acquired Entity would be
combined with that of, or sold to, any acquirer or any other  business or entity
(except as  contemplated  by Section 2.2); (b) solicit or respond to any offers,
bids,  negotiations  or  inquiries  with  respect to the same;  (c)  furnish any
information  with respect to the  business,  activities,  operations,  assets or
liabilities of the Company,  or other similar matters, to any Persons whatsoever
(other than as described in this Agreement)  with respect to the foregoing;  nor
(d) proceed or continue with  negotiations in respect of the foregoing which may
be in progress as of the date of this Agreement.

     5.15 Resignations. Sellers shall obtain the written resignations of all
such  directors  and  officers  of the  Acquired  Entities as are  requested  by
Purchaser not less than ten days in advance of the Closing, such resignations to
be effective as of the  Effective  Time.  To the extent that any such officer or
director is also an employee of an Acquired Entity,  such  resignation  shall be
applicable  only to the  Person's  position as an officer or director and not to
such Person's employment.

     5.16 Post Closing Non-Competition.

     (a) During  the period  commencing  on the  Closing  Date and ending on the
second anniversary thereof, except to the extent permitted by paragraphs (b) and
(c) of this  Section  5.16,  no member of the Seller Group (which shall mean the
Sellers and their respective subsidiaries) shall, directly or indirectly, in any
form,  fashion,  manner or capacity,  lease,  own, manage,  operate,  control or
otherwise engage in, or be a stockholder, partner, member or holder of any other
equity  interest in a Person engaged in, a Prohibited  Activity  anywhere within
the United  States of America.  For  purposes  of this  Section  5.16,  the term
"PROHIBITED  ACTIVITY"  shall  mean the  ownership  or  operation,  directly  or
indirectly,   of  either  (i)  an  electronic   point-of-sale   pharmacy   claim
adjudication  system  pursuant  to which  retail  pharmacies  submit  outpatient
prescription drug claims for members of health plans, or (ii) an outpatient mail
service  pharmacy,  which,  in either  case,  serves  health  plan  members on a
national  basis or in a  service  area  consisting  of all or parts of more than
three states.  In determining  whether the Seller Group is conducting  either of
the  businesses  described  in  clauses  (i) and (ii),  operations  of the types
described in clauses (i) and (ii) above that are not  conducted on an integrated
or coordinated basis shall not be aggregated for purposes of determining whether
such operations are conducted on a national or multi-state basis.  Therefore, by
way of example,  if Seller Group owns an interest in four entities and each such
entity operates an outpatient  mail service  pharmacy in one  jurisdiction,  but
such  entities'  mail service  pharmacies  are not operated on an  integrated or
coordinated basis, such operations would not constitute a Prohibited Activity.

     (b) The  provisions of Section  5.16(a) shall not prohibit the Seller Group
from  acquiring  not  more  than  2% of the  outstanding  class  of  any  equity
securities registered under Section 12 of the Exchange Act.

     (c) The  provisions of Section  5.16(a) shall not prohibit the Seller Group
from acquiring the stock or assets of any Person engaged primarily in businesses
other than a Prohibited  Activity;  provided,  however,  that, if as a result of
such  acquisition,  the Seller Group would control the  operations of any Person
that is engaged in a  Prohibited  Activity,  the Seller  Group shall divest such
Prohibited Activity within one year of such acquisition.

     (d)  Sellers  acknowledge  that  the  provisions  of  Section  5.16(a)  are
reasonably  necessary for Purchaser's  protection and realization of the benefit
to  Purchaser  of its  bargains  under this  Agreement  and that a violation  of
Section  5.16(a)  will cause damage that may be  irreparable  or  impossible  to
quantify.  Accordingly,  Sellers  agree that  Purchaser  shall be entitled to an
injunction  or similar  relief in equity  from a court  having  jurisdiction  to
enforce the restrictions contained in Section 5.16(a) or to restrain a violation
thereof. The right of Purchaser to such relief shall be in addition to any other
rights it may have, whether at law or in equity.

     (e) In the  event  that a court  having  jurisdiction  determines  by final
judgment that the scope,  time period or geographical  area of the covenants set
forth in Section 5.16(a) are too broad to be capable of enforcement,  said court
is authorized to modify said covenants and enforce such  provisions as to scope,
time and geographical  area as the court deems equitable.  Should any portion of
Section 5.16(a) be held invalid or unenforceable,  such portion shall be severed
and the remaining portions shall remain valid and enforceable.

     5.17 Sellers' Non-Solicitation.

     (a) During the period beginning on the date of this Agreement and ending on
the earlier of (i) one year after the  Effective  Time or (ii) the date on which
this  Agreement is  terminated,  Sellers shall refrain from,  either alone or in
conjunction with any other Person, or directly or indirectly through any present
or future Affiliate:

          (i)  employing, engaging or seeking to employ or engage any Person who
within the prior 12 months had been a key employee, manager or senior officer of
an Acquired  Entity  unless  such key  employee,  manager or senior  officer (A)
resigns  voluntarily  (without any solicitation  from or on behalf of Sellers or
any of their current or future  Affiliates)  or (B) is terminated by an Acquired
Entity; or

          (ii)  causing or attempting to cause any such key employee, manager or
senior officer of an Acquired Entity to resign or sever its relationship with an
Acquired Entity.

     (b) The limitations set forth in Section 5.17(a) shall not apply to any key
employee,  manager or senior officer who (i) responds to an advertisement  which
is placed in  general  circulation  by or on behalf of  Sellers  or any of their
current  or future  Affiliates  and which is not  targeted  at  persons  to whom
Section 5.17(a) would  otherwise apply or (ii) contacts  Sellers or any of their
present or future  Affiliates  on his or her own  initiative  without any direct
solicitation by Sellers or any of their present or future Affiliates.

     5.18 Columbia   Confidentiality  Agreements.   Promptly  following  the
execution and delivery of this Agreement,  Columbia shall give written notice to
each  Person  (other  than   Purchaser)  with  which  Columbia  or  any  of  its
subsidiaries  (or any advisor on their  behalf)  entered into a  confidentiality
agreement in  connection  with the  proposed  sale or other  disposition  of the
Company  instructing  such Person to return to the Company all information  with
respect  to the  Company  that  such  Person  obtained  in  connection  with its
evaluation of such proposed  disposition or to destroy such information,  as and
to the extent required by the applicable confidentiality agreement.


                                   ARTICLE VI
                   COVENANTS OF PURCHASER; CERTAIN ADDITIONAL
                            COVENANTS OF THE PARTIES

     6.1 Confidentiality.   Purchaser  acknowledges  and  agrees  that  the
Confidentiality  Agreement  shall  survive the  execution  and  delivery of this
Agreement by the parties  hereto until the Closing  shall have occurred and that
all  information  provided  to  Purchaser  or its  "Representatives"  or  "Other
Recipients"  (as such terms are  defined in the  Confidentiality  Agreement)  in
accordance  with this Agreement  shall be considered  "Evaluation  Material" (as
such term is  defined  in the  Confidentiality  Agreement)  except as  otherwise
provided in the Confidentiality  Agreement.  Notwithstanding the foregoing,  the
provisions  of the  Confidentiality  Agreement  set forth in SCHEDULE 6.1 hereto
shall not survive the parties execution and delivery hereof, but the deletion of
such provisions shall not affect the remainder of the Confidentiality Agreement.

     6.2 Regulatory   Approvals.   Purchaser  will  (a)  use   commercially
reasonable  efforts  to  obtain,  as  promptly  as  practicable,   all  Permits,
approvals,  authorizations and clearances of Governmental  Authorities listed in
SCHEDULE 6.2 hereto and to make the filings and declarations  with  Governmental
Authorities  listed in SCHEDULE  6.2 hereto,  (b) provide such  information  and
communications  to  applicable  Governmental  Authorities  as  is  necessary  in
connection  with the foregoing or in connection  with Sellers'  obtaining any of
the  Permits,   approvals,   authorizations   and  clearances  of   Governmental
Authorities or making any filings or declarations with Governmental  Authorities
in accordance  with Section 5.1 as such  Governmental  Authorities or any Seller
may reasonably  request,  and (c) cooperate with Sellers in obtaining or making,
as soon as  practicable,  any Permits,  approvals,  authorizations,  clearances,
filings and  declarations of or with  Governmental  Authorities that Sellers are
required to obtain or make  pursuant to Section  5.1.  Additionally,  Purchasers
will use  commercially  reasonable  efforts to make a filing,  and to assist the
Sellers  in making  their  filing,  of a  pre-merger  notification  report  form
pursuant to the HSR Act on or before March 4, 1998.

     6.3 Books  and  Records.  Until six months after the later to occur of
(a) the final  adjudication  of any  dispute or  investigation  involving  Taxes
arising out of the  business,  operations  or affairs of the Company  before the
Effective  Time, (b) the final  adjudication of any matter for which Sellers may
be  required  to  indemnify  or hold  harmless  Purchaser,  the  Company  or any
Purchaser Indemnitee pursuant to the terms of this Agreement, or (c) the running
of applicable  statutes of  limitations,  Purchaser  will maintain all Books and
Records of the Company  that  relate to the  pre-Closing  business,  operations,
assets and  properties of the Company,  and shall give Sellers full and complete
access to all such records to the fullest extent  reasonably  required to enable
Sellers to satisfy their  respective  obligations  hereunder or under applicable
law. In addition to the following,  Purchaser  shall not,  without 90 days prior
written   notification  (a  "DESTRUCTION   NOTICE")  to  Sellers,   destroy  any
pre-Closing  Books and Records of the Company.  Following  Sellers' receipt of a
Destruction  Notice,  if Sellers advise  Purchaser in writing within such 90 day
period,  Purchaser  will promptly  deliver the  applicable  Books and Records to
Sellers.

     6.4 Closing Conditions. Purchaser will use its commercially reasonable
efforts to cause the conditions set forth in Article VIII hereof to be satisfied
as soon as reasonably  practicable,  but in all  circumstances  prior to Closing
Date.

     6.5 Notice  of Certain  Occurrences.  Purchaser  will  notify  Sellers
promptly in writing of, and contemporaneously will provide Sellers with true and
complete  copies of any and all material  information or documents  relating to,
any  event,  transaction  or  circumstance  occurring  of  which  Purchaser  has
Knowledge  that causes or would cause any  covenant or  agreement  of  Purchaser
under this Agreement to be breached,  or that renders or would render untrue any
representation  or warranty of Purchaser  contained in this Agreement as if such
representation  or  warranty  were  made on or as of the  date  of  such  event,
transaction or circumstance.

     6.6 Employee Matters.

     (a) As of the Effective  Time,  the employees of the Company shall continue
employment with the Company in the same positions and at the same level of wages
and/or  salary and  without  having  incurred a  termination  of  employment  or
separation  from  service;  provided,  however,  except  as may be  specifically
required by Section 6.7, by applicable law or by any Contract, the Company shall
not be obligated to continue any employment  relationship  with any employee for
any specific  period of time. As soon as practicable  after the Effective  Time,
Purchaser shall provide  benefits to employees of the Company which are at least
substantially  comparable in the aggregate to the benefits provided to similarly
situated employees of Purchaser and its subsidiaries. To the extent any employee
benefit plan, program or policy of Purchaser or its affiliates is made available
to the  employees of the  Company:  (a) service with the Company by any employee
prior to the  Effective  Time shall be  credited  for  eligibility  and  vesting
purposes  under  such  plan,  program or  policy,  but not for  benefit  accrual
purposes,  and (b) with  respect  to any  welfare  benefit  plans to which  such
employees  may  become  eligible,  Purchaser  shall  cause such plans to provide
credit  for any  co-payments  or  deductibles  by such  employees  and waive all
pre-existing condition exclusions and waiting periods, other than limitations or
waiting periods that have not been satisfied under any welfare plans  maintained
by the Company or its  Affiliates  for their  employees  prior to the  Effective
Time.

     (b) (i) Prior to the Effective Time,  Columbia and Value Health shall cause
the Value Health, Inc. Retirement Savings Plan (the "VHI PLAN") to be amended to
provide that  sponsorship  and  maintenance  thereof shall be  transferred  to a
subsidiary of Columbia that is not an Acquired Entity (the "SPONSOR").  Columbia
shall  cause the Sponsor to assume all of the  obligations  and  liabilities  of
Columbia,  Value Health and their affiliates with respect to the VHI Plan and to
become  responsible  for  all  acts,  omissions  and  transactions  under  or in
connection with the VHI Plan.  Prior to the Effective Time, Value Health and the
Acquired  Entities  shall cease to sponsor,  administer or contribute to the VHI
Plan  and  thereby  cease  to  be  responsible  for  any  acts,   omissions  and
transactions  under or in  connection  with the VHI Plan  (except as provided in
(ii) below)

          (ii) After the Effective Time, Value Health or one of the Acquired 
Entities shall establish a new savings plan (the "NEW SAVINGS PLAN") and 
associated trust to hold the assets of that plan for the participants in the 
VHI Plan who are employed by the Acquired Entities immediately prior to the 
Effective Time (the "PARTICIPANTS"), and shall provide to Columbia evidence 
reasonably satisfactory to Columbia that the New Savings Plan and the associated
trust has been established and that the New Savings Plan qualifies under the
requirements of Section  401(a) of the Code, and that the trust is exempt from
tax under Section 401(a) of the Code. Columbia shall provide to Purchaser 
evidence reasonably satisfactory to Purchaser that the VHI Plan remains 
qualified under the requirements of Section 401(a) of the Code. Provided 
Columbia and Purchaser have received evidence reasonably satisfactory to them in
accordance with the preceding sentences, as soon as is reasonably practicable
following the Effective Time, following receipt of such mutually satisfactory
evidence, Columbia shall take or cause to be taken all action required or 
appropriate to transfer the account balances of all Participants to the trust 
associated with the New Savings Plan. Such transfers shall be made in cash, or 
other property acceptable to the Trustee of the New Savings Plan, in an amount
equal to the value of the account balances to be transferred, determined in a 
manner that satisfies the requirements of Treas.Reg. ss.1.414(l)-1 for such a 
transfer and as of the close of business on the Business Day immediately 
preceding the transfer. Provided, however, that to the extent a Participant's 
account balance in the VHI Plan includes one or more promissory notes evidencing
a participant loan or loans, such promissory notes shall be transferred in kind
for the Participant's credit under the New Savings Plan. For the period from the
Effective Time until the transfer,  Value Health or the Acquired Entity,  as the
case may be, shall collect by payroll deduction and promptly pay over to the VHI
Plan all loan  payments  required on  participant  loans made by the Plan to any
Participants  and Columbia  shall cause the VHI Plan to  administer  and pay all
distributions,  withdrawals  and loans payable under the terms of the respective
plan to any Participant until the transfer.  Contingent upon the transfer of the
account  balances to the New Savings  Plan,  the sponsor of the New Savings Plan
shall assume all  liabilities of the Sponsor and its affiliates  with respect to
the  Participants  under the VHI Plan and shall  become,  with  respect  to such
Participants,  responsible for all acts,  omissions and transactions under or in
connection with the VHI Plan.

          (iii) With respect to the covenants and duties described in this 
Section 6.6(b), Columbia, the Company and Purchaser shall use reasonable efforts
and shall reasonably cooperate in accomplishing the transfer of assets from the
VHI Plan to the New Savings Plan in a manner that (A) is reasonably efficient
and (B) does not result in the imposition of  additional substantial burdens or
additional  substantial costs on Columbia,  Value Health, any Acquired Entity or
Purchaser.  Nothing herein shall require  Columbia to liquidate or transfer plan
assets in a manner that violates ERISA.

     (c) At the Effective Time,  Columbia shall make participation  available to
employees  of the Acquired  Entities in the Company  Plans which  provide,  on a
fully-insured  basis,  the life and  long-term  disability  benefits that are in
effect with respect to employees of the Acquired  Entities  immediately prior to
the Effective Time. Such  participation  is conditioned on the timely receipt by
Columbia of written  notification  that Purchaser  intends to continue  benefits
under such  Company  Plans for a transition  period,  and receipt of Columbia of
payments from Purchaser that are  sufficient to cover  Columbia's  out-of-pocket
expenses  for  extending  this  arrangement,  including  the  cost of  insurance
premiums,  and on the  ability of the  employees  of the  Acquired  Entities  to
receive benefits under the applicable  insurance  contracts  (Columbia shall use
commercially  reasonable  efforts to attain such coverage under such contracts).
Columbia's obligations under this paragraph shall only extend for a transitional
period of time that is appropriate to provide  benefits  described  herein until
Purchaser can reasonably provide coverage of such employees under

     (d) Purchaser shall  reasonably  cooperate,  and shall cause the Company to
reasonably  cooperate,  with  Columbia  and its  agents in  providing  copies of
documents and records, allowing access to documents,  records and personnel, and
in sharing  information which Columbia  reasonably requires from time to time in
order to fulfill its  obligations  under ERISA and under the Company Plans,  the
Multiemployer Plans, and other benefit arrangements as the administrator thereof
or in the context of the employer-employee relationship.

     6.7 WARN Act Compliance.  For at least 91 days following the Effective
Time,  Purchaser  will cause the Company to continue the employment of a legally
sufficient  number of employees at each "single site of employment" (and at each
"facility"  and "unit"  within each  "single  site of  employment")  so that the
Company shall not be deemed to have effected a "plant  closing" or "mass layoff"
under the  provisions of the Worker  Adjustment  and  Retraining  Act, 29 U.S.C.
2101-2109  (the "WARN  ACT").  All quoted terms used in this Section 6.7 and not
defined  herein  shall have the  meanings  ascribed to such terms under the WARN
Act.

     6.8 Tax Matters.

     (a)  TERMINATION  OF  EXISTING  TAX  SHARING  AGREEMENTS.  All tax  sharing
agreements  or similar  arrangements  with respect to or involving  the Acquired
Entities shall be terminated effective as of the Effective Time.

     (b) PAYMENT OF TAXES.

          (i) Sellers shall prepare and file, or cause to be prepared and filed,
all Returns of or which include any of the Acquired Entities (including any
amendments thereto) with respect to any taxable period ending at or prior to the
Effective  Time (a  "Pre-Closing  Period").  Such Returns shall be prepared in a
manner  consistent  with past  practices.  Sellers shall provide  Purchaser with
copies of all Returns  promptly  following the filing  thereof.  Notwithstanding
anything to the contrary in this Agreement,  Sellers shall pay and indemnify and
hold Purchaser and the Acquired  Entities  harmless from and against (A) any and
all Taxes  imposed on or with respect to any Acquired  Entity for a  Pre-Closing
Period  (including,  without  limitation,  any  Taxes  imposed  on any  Acquired
Entities as a result of having been (or ceasing to be) a member of the  Columbia
Affiliated  Group or the Value Health  Affiliated  Group, and any Taxes that are
determined by income or earned surplus  attributable  to a Pre-Closing  Period),
and (B) any and all Taxes of any Person (other than the Acquired Entities) under
Treas.  Reg.  Section  1.1502-6  (or any similar  provision  of state,  local or
foreign  law),  or as a  transferee  or  successor,  pursuant to any Tax sharing
agreement,  indemnification  agreement,  or similar contract or arrangement,  or
otherwise.  Purchaser shall prepare and file, or cause to be prepared and filed,
all Returns of or which include any of the Acquired Entities,  and shall pay and
shall  indemnify  and hold Sellers and the Groups  harmless from and against all
Taxes or Other Taxes of any of the  Acquired  Entities  for all taxable  periods
other than a Pre-Closing Period,  except to the extent provided in the preceding
sentence and in paragraph (ii) below.

          (ii) For purposes of the immediately preceding paragraph (i) and this
paragraph (ii), if, for federal, state or local tax purposes, the taxable period
of an Acquired Entity that includes the Effective Time does not terminate at the
Effective  Time (a "STRADDLE  PERIOD"),  the parties  hereto will, to the extent
permitted by applicable law, elect with the relevant  Governmental  Authority to
treat a portion of any such Straddle  Period as a short taxable period ending as
of the  Effective  Time and such  short  taxable  period  shall be  treated as a
Pre-Closing Period for purposes of this Agreement.  In any case where applicable
law does not permit  such an  election  to be made then,  for  purposes  of this
Agreement,  Taxes with respect to the Acquired  Entities for the Straddle Period
shall   be   allocated   to   the   Pre-Closing    Period   using   an   interim
closing-of-the-books  method that  complies with  Treasury  Regulations  Section
1.1502-76(b)(2)(i)  (assuming  that such taxable  period ended at the  Effective
Time) and  treating  such period as a  Pre-Closing  Period for  purposes of this
Agreement,  except  that  (A)  exemptions,  allowances  or  deductions  that are
calculated on an annual basis (such as the deduction for depreciation)  shall be
apportioned on a per-diem basis,  and (B) real property taxes shall be allocated
in  accordance  with  Section  164(d) of the Code.  In the case of any  Straddle
Period described in the preceding sentence,  Purchaser shall provide Sellers and
their  authorized  representatives  with copies of the completed Return for such
period and a statement  certifying the amount of Taxes shown on such Return that
are  chargeable to Sellers (the "TAX  STATEMENT")  at least 30 days prior to the
due date for the filing of such Return  (including any extension  thereof),  and
Sellers and their authorized representatives shall have the right to review such
Return  and Tax  Statement  prior to the  filing  of such  Return.  Sellers  and
Purchaser  agree to consult  and  resolve in good faith any issues  arising as a
result of the  review of such  Return  and Tax  Statement  by  Sellers  or their
authorized representatives and to mutually consent to the filing of such Return.
If the parties hereto are unable to resolve any dispute within ten business days
prior to the due date for  filing  of the  Return  in  question  (including  any
extension  thereof),  the parties shall jointly request the Selected  Accounting
Firm to resolve any issue in dispute as promptly as  possible.  If the  Selected
Accounting Firm is unable to make a  determination  with respect to any disputed
issue prior to the due date (including  extensions) for the filing of the Return
in question,  the Purchaser and the Acquired  Entities,  as the case may be, may
file such  Return  without  the consent of  Sellers,  subject,  however,  to the
obligation thereafter to file an amended Return reflecting the final decision of
the Selected  Accounting  Firm (which  decision  shall be rendered  prior to the
expiration  of the period  during  which an amended  Return may validly be filed
with respect to the applicable taxable period).  Not later than five days before
the due date  (including  any  extensions  thereof)  for  payment  of Taxes with
respect to such  Return,  Sellers  shall pay to Purchaser an amount equal to the
Taxes shown on the Tax Statement as being chargeable to Sellers pursuant to this
paragraph  (ii). If Sellers have disputed such amount,  appropriate  adjustments
shall be made to the amount paid by Sellers in order to reflect the  decision of
the Selected Accounting Firm in immediately  available funds not later than five
days after such decision has been rendered.

          (iii) Purchaser consents to the Acquired Entities joining the 
consolidated Returns of the Columbia Affiliated Group for Tax periods ending at
or before the Effective Time.

          (iv) In no event shall the indemnities  provided for in this
Section 6.8 be subject to the provisions of Section 9.4 of this Agreement.

     (c) REFUNDS AND TAX BENEFITS.

          (i) Purchaser shall promptly pay to Sellers any refund or credit
(including any interest paid or credited with respect thereto) received by
Purchaser or any member of the Purchaser  Affiliated Group of Taxes relating to
any  Pre-Closing Period or  portions  of  Straddle  Periods  at or  before  the
Effective  Time. Purchaser shall, if Sellers  reasonably so request,  cause the
relevant Acquired Entity (or other relevant member of the Purchaser Affiliated 
Group) to file for any refund or credit to which  Seller  believes it is 
entitled  pursuant to this Section 6.8(c). Any Proceeding with respect to such 
a claim shall be governed by the provisions of this Section 6.8, including the 
provisions of Section 6.8(e).

          (ii) The amount of any Taxes for which  indemnification  is provided  
under this Section 6.8 shall not be (A)increased to take account of any net Tax
cost incurred by the indemnified party arising from the receipt of indemnity 
payments hereunder or (B) reduced to take account of any net Tax benefit 
realized by the indemnified  party arising from the incurrence or payment of any
such Taxes. Any indemnity  payment under this Agreement shall be treated as an 
adjustment to the Purchase Price for United State federal income tax purposes.

          (iii  Sellers will immediately pay to Purchaser any Tax  refund  (or
reduction in Tax liability)  resulting from a carryback of any  post-acquisition
Tax attribute of any of the Acquired Entities into the Columbia Affiliated Group
or the Value Health  Affiliated Group, when such refund or reduction is realized
by the Columbia  Affiliated Group or the Value Health Affiliated Group.  Sellers
will  cooperate  with  Purchaser  and the Acquired  Entities in  obtaining  such
refunds (or reduction in Tax liability), including through the filing of amended
Returns or refund claims.  Purchaser agrees to indemnify  Columbia for any Taxes
imposed  upon any member of the Columbia  Affiliated  Group  resulting  from the
disallowance  of any such carried back  post-Closing  Tax  attribute on audit or
otherwise.  Purchaser agrees that all costs and expenses  incurred in connection
with any proceeding  relating to Purchaser's  carryback pursuant to this Section
6.8(c)(iii) shall be borne by Purchaser,  and Purchaser will reimburse  Columbia
for any and all reasonable  direct costs and expenses  incurred by any member of
the Columbia Affiliated Group in connection with any such proceeding or any such
carryback.

     (d) Cooperation.

          (i) Sellers, on the one hand, and Purchaser and the Acquired Entities,
on the other hand, agree to furnish or cause to be furnished to each other, upon
request, as promptly as practicable,  such information and assistance (including
access to books and records)  relating to the Acquired Entities as is reasonably
necessary for the preparation of any Return,  claim for refund, audit or similar
matter, or the prosecution or defense of any claim, suit or proceeding  relating
to any proposed adjustment of Taxes or Other Taxes.

          (ii) Except as  otherwise  provided in Section 6.8(b)(ii), if Sellers
and Purchaser  disagree as to the matters  governed by this Section 6.8, Sellers
and Purchaser  shall  promptly  consult with each other in an effort to resolve
such dispute. If any such disagreement cannot be resolved within 15 days after 
eitherparty asserts in writing that such dispute cannot be resolved, the 
Selected Accounting Firm shall act as an arbitrator to resolve such 
disagreement. The Selected Accounting Firm's determination shall be binding and
conclusive, and any expenses relating to the engagement of such Selected
Accounting firm shall be shared equally by Sellers and Purchaser.

     (e) POST-CLOSING  AUDITS AND OTHER  PROCEEDINGS.  In the case of any audit,
examination or other proceeding  ("PROCEEDING")  with respect to Taxes for which
Sellers are or may be liable pursuant to this Agreement (other than a Proceeding
relating  to Taxes for a  Straddle  Period),  Purchaser  shall  promptly  inform
Sellers,  and Purchaser shall execute or cause to be executed powers of attorney
or other  documents  necessary to enable Sellers to take all actions  desired by
Sellers with respect to such Proceeding to the extent such Proceeding may affect
the amount of Taxes for which  Sellers are liable  pursuant  to this  Agreement.
Sellers  shall have the right to control any such  Proceedings,  (including  any
Proceedings  to initiate  claims for refunds of or credits  with  respect to any
Taxes for which Sellers are liable  pursuant to this  Agreement and that Sellers
believe are  available)  including the right to initiate any claim for refund or
credit,  file  any  amended  Return  or take  any  other  action  that it  deems
appropriate  with respect to such Taxes (or refunds or  credits).  All costs and
expenses  incurred  in  connection  with any such  Proceeding  shall be borne by
Sellers,  and Purchaser and the Acquired Entities shall be reimbursed by Sellers
for any  and all  reasonable  direct  costs  and  expenses  incurred  by them in
connection with such Proceeding.  Sellers will not settle any Proceeding without
Purchaser's  prior written  consent.  In the event that  Purchaser's  consent is
withheld,  Purchaser  will  assume  the  control,  costs  and  expenses  of  the
Proceeding. If such Proceeding is ultimately resolved by payment of an amount in
excess of the amount in the original settlement proposal (or receipt of a refund
in an  amount  less  than  the  amount  in the  original  settlement  proposal),
Purchaser will pay the amount of such excess (or shall pay Sellers the amount of
such refund shortfall).  If such Proceeding is ultimately resolved by payment of
an amount less than the amount of the original  settlement proposal (or a refund
or credit in an amount greater than the original  settlement  proposal)  Sellers
will  reimburse  Purchaser  for its costs  and  expenses  to the  extent of such
difference.  Notwithstanding the foregoing,  Sellers and Purchaser shall jointly
control all  Proceedings in connection  with (i) any Tax claim relating to Taxes
of any Acquired  Entity for a Straddle  Period and (ii) any Tax claim that could
reasonably  be  expected  to have a  material  adverse  effect on the  business,
financial  condition  or results  of  operation  of  Purchaser  or the  Acquired
Entities for any taxable periods including or ending after the Closing Date.

     6.9 Purchaser's Non-Solicitation.

     (a) During the period beginning on the date of this Agreement and ending on
the  earlier of (i) the  Effective  Time or (ii) the date that is one year after
the date on which this  Agreement is terminated,  Purchaser  shall refrain from,
either alone or in conjunction with any other Person,  or directly or indirectly
through any present or future Affiliate:

          (A) employing, engaging or seeking to employ or engage any Person who
within the prior 12 months had been an officer, employee or consultant  of the
Company  unless such  officer,  employee or consultant  (1) resigns  voluntarily
(without  any  solicitation  from  or on  behalf  of  Purchaser  or  any  of its
Affiliates) or (2) is terminated by the Company; or

          (B) causing or attempting to cause any officer, employee or consultant
of the Company to resign or sever a relationship with the Company.

     (b) The limitations set forth in Section 6.9(a):

          (i) shall apply only to (A) officers, employees and consultants who 
render their services  primarily at the  headquarters of the Value Health
Subsidiaries (which is located at 4700 Nathan Lane North, Plymouth, Minnesota 
55442), and (B) officers, employees and consultants who provide information 
systems or sales services for the Company at any location; and

          (ii) shall not apply to any officer, employee or consultant who (A)
responds to an  advertisement  which is placed in general  circulation  by or on
behalf  of  Purchaser  or any of its  Affiliates  and which is not  targeted  at
persons to whom Section 6.9(a)  otherwise would apply or (B) contacts  Purchaser
or any of its present or future Affiliates on his or her own initiative  without
any direct solicitation by Purchaser or any of its present or future Affiliates.

     6.10 Financing.  Purchaser agrees to promptly notify Columbia if at any
time prior to the Closing  Date it becomes  aware of any facts or  circumstances
that cause it to conclude  that it will be unable to obtain any of the financing
contemplated by the Commitment Letter substantially in accordance with the terms
described therein.

                                   ARTICLE VII
                     CONDITIONS TO OBLIGATIONS OF PURCHASER

     Except as may be waived by  Purchaser,  the  obligations  of  Purchaser  to
purchase the Shares and to consummate the  transactions  contemplated  hereby on
the Closing Date shall be subject to the satisfaction on or prior to the Closing
Date of the following conditions:

     7.1 Representations  and  Warranties.  Except as  contemplated by this
Agreement,  the  representations  and  warranties  of Sellers  contained in this
Agreement  or in any  certificate  to be  furnished  by Sellers to  Purchaser at
Closing  pursuant to this Agreement  shall be true on and as of the Closing Date
as though such representations and warranties were made on and as of the Closing
Date.

     7.2 Compliance  with Agreement. On and as of the Closing Date, Sellers
shall have  performed  and complied in all material  respects with each covenant
and  agreement  required by this  Agreement to be performed and complied with by
them on or before the Closing Date.

     7.3 Closing Certificates.  Sellers shall have delivered to Purchaser a
certificate,  dated as of the  Closing  Date and  signed on behalf of  Columbia,
Holdings and Galen,  respectively,  by the  President or Vice  President of each
thereof,  certifying the fulfillment of the conditions specified in Sections 7.1
and 7.2 hereof.

     7.4 Secretary's  Certificates.  At the Closing,  Purchaser  shall have
received copies of the following,  in each case certified as of the Closing Date
by a Secretary  or an  Assistant  Secretary  of  Columbia,  Holdings  and Galen,
respectively:

     (a) resolutions of the respective boards of directors of Columbia, Holdings
and Galen authorizing the execution,  delivery and performance of this Agreement
and the other agreements that Columbia, Holdings or Galen is required to execute
and deliver pursuant to the terms of this Agreement; and

     (b) the signature and  incumbency of the  respective  officers of Columbia,
Holdings  and Galen  authorized  to execute and deliver this  Agreement  and the
other agreements and certificates  that Columbia,  Holdings or Galen is required
to deliver on or before the Closing Date pursuant to this Agreement.

     7.5 Opinion of Counsel. At the Closing, Purchasers shall have received
the  opinion,  dated the  Closing  Date,  of Waller  Lansden  Dortch & Davis,  a
Professional  Limited Liability Company,  counsel for Sellers,  substantially to
the  effect  set  forth  in  EXHIBIT  7.5  hereto.   Such  opinion  may  include
qualifications  and assumptions  that are customary and appropriate with respect
to the substance of such opinion.

     7.6 Consents,  Authorizations,  Etc.. All orders,  consents,  Permits,
authorizations,  approvals, waivers, filings, registrations and notifications of
or to  Governmental  Authorities  set forth at SCHEDULES 5.1 AND 6.2 hereto that
are  required  to be  obtained  or given  prior to the  Closing  shall have been
obtained or given, and all applicable waiting periods with respect thereto shall
have expired.

     7.7 No  Action  or  Proceeding.  On the  Closing  Date,  (a) no  valid
judgment,  order  or  decree  of  any  court  or  other  Governmental  Authority
restraining,   enjoining  or  otherwise  preventing  the  consummation  of  this
Agreement or the transactions contemplated hereby shall be outstanding,  and (b)
no  action,  suit,  investigation  or  proceeding  brought  by any  Governmental
Authority shall be pending before any court or other  Governmental  Authority or
threatened  by any  Governmental  Authority  to  restrain,  enjoin or  otherwise
prevent the  consummation  of this  Agreement or the  transactions  contemplated
hereby,  which action,  suit,  investigation  or  proceeding,  in the reasonable
opinion  of  Purchaser,  may  result  in a  decision,  ruling  or  finding  that
individually  or in the  aggregate  has or may  reasonably be expected to have a
material adverse effect on the validity or enforceability of this Agreement,  or
on the ability of Purchaser to perform its obligations under this Agreement.

     7.8 Certificates   of  Incorporation;   Bylaws.   Sellers  shall  have
delivered to Purchasers true and complete copies of the respective  Certificates
of Incorporation and Bylaws of Columbia, Holdings, Galen, Value Health and MPN.

     7.9 Resignation of Boards of Directors and Officers. Each then current
officer and/or member of the board of directors of any of the Acquired  Entities
who is  designated  by  Purchaser  to Columbia in writing not less than ten days
prior to the Closing  shall have tendered his or her written  resignation  as an
officer and/or director to the applicable  Acquired Entity, such resignations to
be effective at or before the Effective Time.  Notwithstanding the foregoing, no
such  officer or  director  shall be  required  to resign as an  employee of the
Company.

     7.10 Good  Standing  Certificates.  At the Closing,  Sellers shall have
delivered  to  Purchaser  good  standing  certificates  issued  with  respect to
Columbia,  Holdings,  Galen  and each of the  Acquired  Entities  issued  by the
Secretary of State of the relevant  entity's state of  incorporation.  Each such
good standing  certificate shall be dated as of a date that is not more than ten
days prior to the Closing Date.

     7.11 Material  Adverse  Change.  No change or event shall have occurred
that has caused a Material Adverse Effect.  The parties agree that the foregoing
shall not include any change  resulting from, (a) changes in general  conditions
(including economic or political  conditions) or the adoption or modification of
Laws,  which  conditions or Laws are generally  applicable to the economy or are
generally  applicable to the industries in which the Company  operates,  (b) the
Company's  disposition of the Excluded Assets as contemplated by this Agreement,
or (c) the occurrence or consequences  of any of the potentially  adverse events
or circumstances described in SCHEDULE 7.11.

     7.12 Waiver  of  Conditions.  Purchaser may waive any condition of this
Article VII to the extent  permitted  by  applicable  law.  Except as  otherwise
provided  herein,  the  consequences  of any  knowing  waiver  shall  be (a) the
elimination of the waived  condition as a valid basis for Purchaser to refuse to
close the  transactions  contemplated by this Agreement,  and (b) the release of
Columbia,  Holdings and Galen from any claim by Purchaser for resulting injuries
and Damages with respect to that waived condition.

     7.13 Trademark  Acknowledgment  Agreement. The Trademark Acknowledgment
Agreement shall have been executed and delivered by the parties  thereto,  and a
copy of  such  executed  Trademark  Acknowledgment  Agreement  shall  have  been
delivered to Purchaser.

     7.14 Columbia PBM Agreement. Columbia and an Acquired Entity shall have
executed  and   delivered  an  agreement  in  form  and   substance   reasonably
satisfactory to Purchaser and Columbia that will embody the provisions described
in SCHEDULE  7.14 and otherwise  contain  provisions  customary  with respect to
agreements of this type.

     7.15 Financing.  Purchaser  shall  have  received  the  debt  financing
contemplated by the Commitment Letter substantially in accordance with the terms
described therein.

     7.16 MedManagement   Agreement.   MedManagement   and  the  appropriate
Acquired  Entity  shall have  executed  and  delivered  an agreement in form and
substance reasonably satisfactory to Purchaser and Columbia that will embody the
provisions described in SCHEDULE 7.16 and otherwise contain provisions customary
with respect to agreements of this type.


                                  ARTICLE VIII
                      CONDITIONS TO OBLIGATIONS OF SELLERS

     Except as may be waived in writing by Sellers,  the  obligations of Sellers
to consummate the transactions  contemplated hereby on the Closing Date shall be
subject to the  satisfaction  on or prior to the Closing  Date of the  following
conditions:

     8.1 Representations  and  Warranties.  Except as  contemplated by this
Agreement,  the  representations  and warranties of Purchaser  contained in this
Agreement  or in any  certificate  to be  furnished  by  Purchaser to Sellers at
Closing  pursuant to this Agreement  shall be true on and as of the Closing Date
as though such representations and warranties were made on and as of the Closing
Date.

     8.2 Compliance  with  Agreement.  On  and  as  of  the  Closing  Date,
Purchaser  shall have performed and complied in all material  respects with each
covenant and agreement  required by this  Agreement to be performed and complied
with by it on or before the Closing Date.

     8.3 Closing Certificates.  Purchaser shall have delivered to Sellers a
certificate,  dated as of the Closing  Date and signed on behalf of Purchaser by
the President or a Vice President  thereof,  certifying  the  fulfillment of the
conditions specified in Sections 8.1 and 8.2 hereof.

     8.4 Secretary's  Certificate.  At  the  Closing,  Sellers  shall  have
received copies of the following,  in each case certified as of the Closing Date
by a Secretary or an Assistant Secretary of Purchaser:

     (a)  resolutions  of the board of directors of  Purchaser  authorizing  the
execution,  delivery and performance of this Agreement and the other  agreements
that Purchaser is required to execute and deliver  pursuant to the terms of this
Agreement;

     (b) the signature and incumbency of the officers of Purchaser authorized to
execute and deliver this  Agreement and the other  agreements  and  certificates
that  Purchaser is required to deliver on or before the Closing Date pursuant to
this Agreement.

     8.5 Opinion  of Counsel.  At the Closing,  Sellers shall have received
the opinion, dated the Closing Date, of Simpson Thacher & Bartlett,  counsel for
Purchaser,  substantially  to the effect set forth in EXHIBIT 8.5  hereto.  Such
opinion  may include  qualifications  and  assumptions  that are  customary  and
appropriate with respect to the substance of such opinion.

     8.6 Consent,  Authorizations,  Etc..  All orders,  consents,  Permits,
authorizations,  approvals, waivers, filings, registrations and notifications of
or to  Governmental  Authorities  set forth at SCHEDULES 5.1 AND 6.2 hereto that
are  required  to be  obtained  or given  prior to the  Closing  shall have been
obtained or given, and all applicable waiting periods with respect thereto shall
have expired.

     8.7 No  Action  or  Proceeding.  On the  Closing  Date,  (a) no  valid
judgment,  order  or  decree  of  any  court  or  other  Governmental  Authority
restraining,   enjoining  or  otherwise  preventing  the  consummation  of  this
Agreement or the transactions contemplated hereby shall be outstanding,  and (b)
no  action,  suit,  investigation  or  proceeding  brought  by any  Governmental
Authority shall be pending before any court or other  Governmental  Authority or
threatened  by any  Governmental  Authority  to  restrain,  enjoin or  otherwise
prevent  the   consummation  of  this  Agreement  or  any  of  the  transactions
contemplated  hereby, which action,  suit,  investigation or proceeding,  in the
reasonable opinion of Columbia, may result in a decision, ruling or finding that
individually  or in the  aggregate  has or may  reasonably be expected to have a
material adverse effect on the validity or  enforceability  of this Agreement or
on the  ability  of  Columbia,  Holdings  or Galen to perform  their  respective
obligations under this Agreement.

     8.8 Good  Standing Certificate.  At the Closing,  Purchaser shall have
delivered  to  Sellers  a good  standing  certificate  issued  with  respect  to
Purchaser by the Secretary of State of Purchaser's state of incorporation.  Such
good standing  certificate shall be dated as of a date that is not more than ten
days prior to the Closing Date.

     8.9 Certificate  of  Incorporation;   Bylaws.   Purchaser  shall  have
delivered to Sellers  true and complete  copies of  Purchaser's  Certificate  of
Incorporation and Bylaws.

     8.10 Waiver  of  Conditions.  Sellers may waive any  conditions of this
Article VIII to the extent  permitted  by  applicable  law.  Except as otherwise
provided  herein,  the  consequences  of any  knowing  waiver  shall  be (a) the
elimination  of the waived  condition  as a valid basis for Sellers to refuse to
close the  transactions  contemplated by this Agreement,  and (b) the release of
Purchaser  from any claim by Sellers for  resulting  injuries  and Damages  with
respect to that waived condition.

     8.11 Trademark  Acknowledgment  Agreement. The Trademark Acknowledgment
Agreement shall have been executed and delivered by the parties thereto.

     8.12  MedManagement  Agreement.  MedManagement  and the  appropriatecquired
Entity  shall have  executed and  delivered  an agreement in form and  substance
reasonably   satisfactory  to  Purchaser  and  Columbia  that  will  embody  the
provisions described in SCHEDULE 7.16 and otherwise contain provisions customary
with respect to agreements of this type.

                                   ARTICLE IX
                                 INDEMNIFICATION

     9.1 Indemnification  by  Sellers.  Subject to the  provisions  of this
Article IX, Sellers shall indemnify and hold harmless  Purchaser,  any Affiliate
of Purchaser,  the  respective  officers,  directors,  shareholders,  employees,
agents  and  representatives  of  Purchaser  and its  Affiliates,  and each such
Person's respective successors and assigns (each, a "PURCHASER INDEMNITEE") from
and after the Effective Time from and against the Excluded  Liabilities  and any
Damages  incurred  or suffered by such  Purchaser  Indemnitee  as a result of or
arising from (a) any  inaccuracy in any of the  representations  and  warranties
made herein by Sellers,  (b) any breach of any of the  covenants  or  agreements
made herein by Sellers,  (c) the claims,  actions,  suits, and other proceedings
listed in SCHEDULE 9.1(C), (d) the payment obligations of Value Health under the
agreements  listed on SCHEDULE  9.1(D),  and (e) any claims,  actions,  suits or
other proceedings arising out of any of the Excluded Liabilities.

     9.2 Indemnification  by Purchaser.  Purchaser shall indemnify and hold
harmless  each  Seller,  any  Affiliate  of any Seller  (other than an Affiliate
providing  insurance  coverage with respect to any claim by Purchaser under this
Agreement), the respective officers, directors, shareholders,  employees, agents
and  representatives  of each Seller and their respective  Affiliates,  and each
such Person's  respective  successors  and assigns (each a "SELLER  INDEMNITEE")
from and after the  Effective  Time from and  against  any  Damages  incurred or
suffered  by such  Seller  Indemnitee  as a result of, or  arising  from (a) any
inaccuracy  in  any  of  the  representations  and  warranties  made  herein  by
Purchaser,  (b) any breach of any of the covenants or agreements  made herein by
Purchaser,  (c)  any  breach  of any of the  covenants  or  agreements  made  by
Purchaser in the Confidentiality Agreement,  including any use of the Evaluation
Material by Purchaser or its Representatives or Other Recipients contrary to the
terms of the Confidentiality Agreement, (d) any claims, actions, suits, or other
proceedings  relating to the operations of the Company after the Effective Time,
(e) any claims,  actions,  suits or proceedings  arising out of any post-Closing
obligation or action on the part of the Company under any Contract  which is not
an Excluded Liability,  and (f) the claims, actions, suits and other proceedings
listed in SCHEDULE 9.2(F).

     9.3 Claims  Procedures.  Unless a different  procedure is specified in
Section  6.8,  in the case of any Damages  for which  indemnification  is sought
hereunder,  the party seeking  indemnification (the "INDEMNITEE") shall promptly
notify the party from whom indemnification is sought (the "INDEMNIFYING  PARTY")
in writing of the existence  and nature of such  Damages,  as well as the claim,
demand,  action  or  proceeding,  if any,  out of  which  the  Damages  arise (a
"CLAIM");  provided,  however, that no failure or delay by the Indemnitee in the
performance of the foregoing shall reduce or otherwise  affect the obligation of
the Indemnifying Party to indemnify and hold the Indemnitee harmless,  except to
the extent  the  Indemnitee's  failure  to give or delay in giving the  required
notice  materially  impairs the  Indemnifying  Party's  ability to  indemnify or
defend or to mitigate its Damages,  in which case the  Indemnifying  Party shall
have no obligation to indemnify the Indemnitee to the extent of Damages, if any,
caused by such failure to give or delay in giving the required  notice.  If such
Damages arise out of a Claim by a third  person,  the  Indemnitee  must give the
Indemnifying Party a reasonable opportunity to defend the same or prosecute such
action to conclusion or settlement satisfactory to the Indemnifying Party at the
Indemnifying  Party's  sole  cost  and  expense  and  with  counsel  of its  own
selection,  and the  Indemnifying  Party  shall  pay any  resulting  settlements
(including  all  associated  Damages),  satisfy any judgments or comply with any
decrees; provided, further, however, that the Indemnitee shall at all times also
have the right fully to participate in the defense at Indemnitee's sole cost and
expense so long as such participation  occurs without hindering or impairing the
defense of the Indemnifying Party.  Notwithstanding  the foregoing,  without the
prior  written  consent of the  Indemnitee,  the  Indemnifying  Party  shall not
compromise or settle any Claim if (i) the terms thereof  impose any liability or
obligations  on the  Indemnitee,  or (ii) the terms  thereof  fail to include an
unconditional  general release of the Indemnitee with respect to all liabilities
and  obligations  in respect of such Claim.  If the  Indemnifying  Party  shall,
within a reasonable time after said notice, fail to defend, the Indemnitee shall
have the right,  but not the obligation,  and without waiving any rights against
the Indemnifying Party, to undertake the defense of, and with the consent of the
Indemnifying Party (such consent not to be withheld unreasonably), to compromise
or settle the Claim on behalf, for the account,  and at the risk and expense, of
the  Indemnifying  Party and shall be  entitled  to  collect  the  amount of any
settlement or judgment or decree and all costs and expenses (including,  without
limitation,  reasonable  attorney's  fees)  in  connection  therewith  from  the
Indemnifying Party. Except as provided in the preceding sentence, the Indemnitee
shall not compromise or settle any Claim.

     9.4 Limitations on Claims.

     (a) LIABILITY  THRESHOLDS.  Notwithstanding  anything in this Article IX to
the contrary,  no  indemnified  Damages with respect to Claims  arising out of a
breach of Sellers'  representations  and warranties shall be payable pursuant to
this Article IX unless and until the  aggregate  amount of  indemnified  Damages
asserted  against  Sellers  under this  Article IX with  respect to such  Claims
equals or exceeds  $2,600,000  (the "LIABILITY  THRESHOLD").  Once the Liability
Threshold for such Claims has been reached,  the Indemnitee shall be entitled to
the benefit of the indemnity under this Article IX for such Claims to the extent
of any and all Damages above the Liability  Threshold up to, but not  exceeding,
an amount equal to the Purchase Price.

     (b) SUBROGATION.  Following  indemnification as provided for hereunder, the
Indemnifying  Party shall be  subrogated  to all rights of the  Indemnitee  with
respect to all Persons relating to the matter for which indemnification has been
made.

     (c)  SURVIVAL  OF  CERTAIN   REPRESENTATIONS,   WARRANTIES  AND  COVENANTS;
LIMITATION OF TIME TO BRING CLAIMS.

          (i) The representations and warranties set forth in this Agreement
shall survive the Closing and shall expire eighteen months after the Effective 
Time. No Claim for indemnification arising out of a breach of such 
representations and warranties may be brought after that time.

          (ii) In addition to the other limitations set forth in this 
Section 9.4, no Claim for indemnification may be brought under this Article IX
later than the earlier of(A) one year following the date on which the Indemnitee
receives actual notice of the inaccuracy, breach, claim, action, suit or other
proceeding forming the basis of the Claim, and (B) the applicable statute of
limitations with respect to such Claim.

     (d) NO LIABILITY THRESHOLD.  Notwithstanding anything in this Article IX to
the contrary  (including,  without  limitation,  the Liability  Threshold or any
other  limitation  set  forth  in this  Section  9.4),  Sellers'  obligation  to
indemnify  Purchaser  with respect to Excluded  Liabilities  shall extend to all
Damages asserted against Sellers with respect to such claims.

     9.5 Insured   Losses.   The   amount   of  any   Damages   for   which
indemnification  is  provided  under  this  Article  IX  shall  be  net  of  any
duplicative amounts recovered by the Indemnitee under insurance policies or from
unaffiliated third Persons with respect to such Damages.

                                    ARTICLE X
                                   TERMINATION

     10.1 Termination  Events.  This Agreement may be terminated at any time
prior to Closing upon prior  written  notice by the party  electing to terminate
this Agreement to the other party:

     (a) by mutual agreement of Columbia and Purchaser (expressed in writing);

     (b) by either  Columbia or Purchaser  if any  permanent  injunction,  Court
Order or other  order,  decree  or  ruling  of any  court or other  Governmental
Authority  of  competent  jurisdiction  permanently  restraining,  enjoining  or
otherwise  preventing the consummation of the transactions  contemplated  hereby
shall have been issued and become final and non-appealable;

     (c) by either  Columbia or Purchaser if the Closing shall not have occurred
by June 30, 1998; provided,  however, that the right to terminate this Agreement
under this Section  10.1(c)  shall not be available to any party whose breach of
its representations and warranties in this Agreement or whose failure to perform
any of its  covenants  and  agreements  under this  Agreement  shall have been a
contributing cause of, or resulted in, the failure of the Closing to occur on or
before such date;

     (d) by Columbia  upon a breach in any  material  respect of any covenant or
agreement on the part of the  Purchaser set forth in this  Agreement,  or if any
representation  or warranty of the  Purchaser  shall have been breached or shall
have become  untrue,  in any such case that the conditions set forth in Sections
8.1 and 8.2 would be incapable of being satisfied by June 30, 1998 (or any later
date as such date may be otherwise extended by mutual agreement of the parties);
or

     (e) by Purchaser  upon a breach in any material  respect of any covenant or
agreement  on the part of any  Seller  set  forth in this  Agreement,  or if any
representation  or warranty of any Seller shall have been breached or shall have
become  untrue in any such case such that the  conditions  set forth in Sections
7.1 and 7.2 would be incapable of being satisfied by June 30, 1998 (or any later
date as such date may be otherwise extended by mutual agreement of the parties).

     10.2 Effect  of  Termination.  In the  event  of  termination  of  this
Agreement  pursuant to Section 10.1, all obligations of the parties hereto shall
terminate,  except the obligations of the parties  pursuant to Sections 6.1, 6.9
and 12.1 and except for the  provisions of this Section 10.2 and Sections  12.2,
12.6, 12.7, 12.8, 12.9, 12.10 and 12.13.  Moreover,  in the event of termination
of this Agreement pursuant to Section 10.1(c),  (d) or (e), nothing herein shall
prejudice the ability of the  non-breaching  party from seeking damages from any
other  party for any breach of this  Agreement,  including  without  limitation,
attorneys' fees and the right to pursue any remedy at law or in equity.


                                   ARTICLE XI
                                     NOTICES

     11.1 Notices.  All notices and other communications hereunder shall be
in writing and shall be deemed to have been duly given when  delivered in person
or received by  telegraphic  or other  electronic  means  (including  facsimile,
telecopy and telex) or when delivered by overnight courier,  or if mailed,  five
days after being  deposited in the United  States mail,  certified or registered
mail, first-class postage prepaid,  return receipt requested,  to the parties at
the following addresses or facsimile numbers:

         If to Columbia, Holdings or Galen, to:

                  Columbia/HCA Healthcare Corporation
                  One Park Plaza
                  Nashville, Tennessee 37203
                  Attention: General Counsel
                  Fax: (615) 344-1859
  
        With copies to:

                  Columbia/HCA Healthcare Corporation
                  One Park Plaza
                  Nashville, Tennessee 37203
                  Attention: Senior Vice President - Development
                  Fax: (615) 344-2128

                  and

                  G. Scott Rayson
                  Waller Lansden Dortch & Davis,
                  A Professional Limited Liability Company
                  511 Union Street, Suite 2100
                  Nashville, Tennessee  37219-1760
                  Fax:  (615) 244-6804

         If to Purchaser, to:

                  Express Scripts, Inc.
                  14000 Riverport Drive
                  Maryland Heights, Missouri 63043
                  Attention:        Thomas M. Boudreau,
                                    Senior Vice President
                                    and General Counsel
                  Fax:

         With a copy to:

                  Richard A. Garvey
                  Simpson Thacher & Bartlett
                  425 Lexington Avenue
                  New York, New York 10017
                  Fax:  (212) 455-2502

     Any party from time to time may change its address or facsimile  number for
the  purpose of  receipt  of  notices  to that party by giving a similar  notice
specifying a new address or facsimile  number to the other notice parties listed
above in accordance with the provisions of this Section 11.1.

                                   ARTICLE XII
                                  MISCELLANEOUS


     12.1 Fees and Expenses. Except as otherwise provided in this Agreement,
the Sellers shall pay their own expenses  (including,  without  limitation,  the
fees and expenses of Merrill Lynch & Co. in connection  with this  Agreement and
also including  those expenses of the Acquired  Entities in connection with this
Agreement  and  the  transactions  contemplated  hereby  incurred  prior  to the
Effective  Time) and Purchaser  shall pay its own expenses  (including,  without
limitation,  the fees and  expenses  of BT Alex  Brown in  connection  with this
Agreement,  and also including those of the Acquired Entities in connection with
this  Agreement and the  transactions  contemplated  hereby  incurred  after the
Effective  Time)  in  connection  with  this  Agreement  and  the   transactions
contemplated  hereby.  Columbia  and  Purchaser  each  shall  pay one  half  all
recording fees,  transfer fees,  transfer taxes, and documentary or stamp taxes,
if any, relating to the sale and the transactions provided for herein. Except as
set  forth in the  following  sentence,  each  party  shall pay its own fees and
expenses,   including  counsel  fees  and  filing  fees,  with  respect  to  the
preparation  and filing of its  notifications  under the HSR Act.  Further,  and
notwithstanding  the foregoing,  Purchaser  will bear all  reasonable  costs and
expenses,  including attorneys' fees of all parties,  resulting from or relating
to any  investigation  or  challenge  of the  transactions  contemplated  hereby
initiated by the United  States  Federal  Trade  Commission,  the United  States
Department of Justice or the Attorney General of any state on, prior to or after
the Closing under  antitrust or similar  laws,  including  reasonable  costs and
expenses resulting from or relating to any "second request" issued in connection
with the  parties'  HSR Act filings  made in  connection  with the  transactions
contemplated hereby.

     12.2 Entire  Agreement.  Except for documents and  agreements  executed
pursuant hereto, and except for the provisions of the Confidentiality  Agreement
(which  Confidentiality  Agreement  shall  survive the  parties'  execution  and
delivery of this Agreement and the other  documents and agreements  contemplated
hereby until the Closing  shall have  occurred,  except to the extent  otherwise
provided in Section 6.1), this Agreement  supersedes all prior oral  discussions
and written agreements between the parties with respect to the subject matter of
this  Agreement  (including  any term sheet or  similar  agreement  or  document
relating   to  the   transactions   contemplated   hereby).   Except   for   the
Confidentiality Agreement, this Agreement,  including the exhibits and schedules
hereto and other documents delivered in connection  herewith,  contains the sole
and entire  agreement  between  the parties  hereto with  respect to the subject
matter hereof.

     12.3 Waiver.  Any term or condition of this  Agreement may be waived at
any time by the party which is entitled to the benefit thereof.  Any such waiver
must be in writing  and must be duly  executed  by such  party.  A waiver on one
occasion  shall not be  deemed  to be a waiver of the same or any other  breach,
provision or requirement on any other occasion.

     12.4 Amendment.  This  Agreement  may be modified or amended  only by a
written instrument duly executed by each of the parties hereto.

     12.5 Counterparts; Facsimile Signatures. This Agreement may be executed
simultaneously  in any number of counterparts,  each of which shall be deemed an
original,  but all of  which  shall  constitute  one and  the  same  instrument.
Facsimile signatures on this Agreement shall be deemed to be original signatures
for all purposes.

     12.6 No  Third  Party  Beneficiary.  The terms and  provisions  of this
Agreement  are intended  solely for the benefit of Sellers,  Purchaser and their
respective  successors or assigns, and it is not the intention of the parties to
confer third party beneficiary rights upon any other Person.

     12.7 GOVERNING  LAW, CONSTRUCTION.  THIS AGREEMENT SHALL BE GOVERNED BY
AND CONSTRUED IN ACCORDANCE  WITH THE LAWS OF THE STATE OF TENNESSEE  APPLICABLE
TO A CONTRACT  EXECUTED AND  PERFORMED IN SUCH STATE.  The parties  hereto agree
that no provisions of this Agreement or any related  document shall be construed
for or against or  interpreted  to the  advantage or  disadvantage  of any party
hereto by any court or other  Governmental  Authority  by reason of any  party's
having or being deemed to have structured or drafted such provision,  each party
having participated equally in the structuring and drafting hereof.

     12.8 Binding  Effect. This Agreement shall be binding upon and inure to
the  benefit  of the  parties  and their  respective  successors  and  permitted
assigns, including successors by merger or otherwise.

     12.9 No  Assignment.  Neither this Agreement nor any right hereunder or
part  hereof may be  assigned  by any party  hereto  without  the prior  written
consent of the other parties hereto; PROVIDED,  HOWEVER, that Columbia, Holdings
and Galen,  on the one hand, and Purchaser,  on the other hand, may assign their
respective  rights and obligations under this Agreement to other Persons who (a)
are   wholly-owned   (directly  or   indirectly)   by  Columbia  or   Purchaser,
respectively,  and (b)  agree to be bound by the terms  and  conditions  of this
Agreement.  Notwithstanding  the  assignment of this  Agreement or any rights or
obligations  hereunder,  the assignor shall be jointly and severally liable with
its assignee for its obligations hereunder.

     12.10 Headings,  Gender,  Etc.. The headings used in this Agreement have
been inserted for convenience  and do not constitute  provisions to be construed
or interpreted  in connection  with this  Agreement.  Unless the context of this
Agreement otherwise requires,  (a) words of any gender will be deemed to include
each other  gender,  (b) words  using the  singular  or plural  number also will
include the plural or singular  number,  respectively,  (c) the terms  "hereof",
"herein",  "hereby" and  derivative  or similar  words will refer to this entire
Agreement, and (d) the terms "Article," "Section," "Schedule" and "Exhibit" will
refer to the  specified  Article or Section of this  Agreement or the  specified
Schedule or Exhibit to this Agreement.

     12.11 Public  Announcement. On or before the Closing, the parties hereto
will each consult with one another prior to making or issuing public  statements
or announcements with respect to this Agreement or the transactions contemplated
hereby  and will use good faith  efforts to agree on the text of a joint  public
statement or announcement and/or will use good faith efforts to obtain the other
parties' approval of the text of any public statement or announcement to be made
solely on behalf of a party;  provided that the foregoing shall not preclude any
party from making such  disclosure as may be required by  applicable  Law or the
rules of any securities exchange or market on which securities of such party are
listed or quoted.

     12.12 Access to Information. Sellers and Purchaser agree that, from time
to time after the Closing,  upon the reasonable request of another party hereto,
they will cooperate and will cause their respective Affiliates to cooperate with
each other to effect the orderly  transition  of the  business,  operations  and
affairs of the Company.  Without  limiting the generality of the foregoing,  (a)
Sellers will give and will cause their Affiliates to give representatives of the
Company  reasonable  access to all  Books  and  Records  of  Sellers  reasonably
requested  by the Company or Purchaser in the  preparation  of any  post-Closing
financial  statements,  reports or Tax returns of the Company; and (b) Purchaser
will  give and  will  cause  the  Company  to give  representatives  of  Sellers
reasonable access to all pre-Closing Books and Records of the Company reasonably
requested  by  Sellers  in  the  preparation  of  any   post-Closing   financial
statements, reports or Tax returns of Sellers.

     12.13 Severability;   Invalid  Provisions.  If  any  provision  of  this
Agreement is held to be illegal,  invalid or unenforceable  under any present or
future law, (a) such provisions will be fully severable; (b) this Agreement will
be construed and enforced as if such illegal, invalid or unenforceable provision
had  never  comprised  a part  hereof;  (c)  the  remaining  provisions  of this
Agreement  will  remain in full force and effect and will not be affected by the
illegal,  invalid or unenforceable  provision or by its severance herefrom;  and
(d) in lieu of such illegal, invalid or unenforceable  provision,  there will be
added  automatically as a part of this Agreement a legal,  valid and enforceable
provision  as  similar  in  terms  to such  illegal,  invalid  or  unenforceable
provision as may be possible.

     12.14 Cooperation.  Upon  request,  each  of the  parties  hereto  shall
cooperate with the other in good faith, at the requesting  party's  expense,  in
furnishing  information,  testimony and other  assistance in connection with any
actions,  proceedings,  arrangements,  or disputes  involving any of the parties
hereto  (other than in a dispute  among such parties or entities) and based upon
contracts,  arrangements  or acts of Columbia,  Holdings,  Galen, or the Company
which were in effect or occurred prior to the Effective Time and which relate to
the  business of the Company.  Purchaser  shall cause the Company to provide any
information or documents reasonably requested by Columbia,  Holdings or Galen in
connection with tax or other disputes, settlements,  investigations,  proceeding
or other  matters in respect of any period  ending at or prior to the  Effective
Time. The party  requesting  documents or  information  pursuant to this Section
shall pay all fees and expenses paid to unaffiliated  third parties by the party
providing  such  documents or  information  in connection  with  providing  such
information or document. In addition,  following the Closing, the parties hereto
shall  cooperate  fully with each  other and make  available  to the  other,  as
reasonably  requested,  and to any taxing authority,  all information,  records,
documents relating to tax liabilities or potential tax liabilities and tax bases
of the Company,  and shall preserve all such information,  records and documents
at least  until the  expiration  of any  applicable  statute of  limitations  or
extensions thereof.  Purchaser agrees that to the extent reasonably requested by
Columbia,  Purchaser  will  permit  each  of the  Persons  who is a  party  to a
Management  Letter  Agreement  to  furnish  information,   testimony  and  other
assistance  to, and to otherwise  cooperate  with,  Sellers in  connection  with
Purchaser's obligations under this Section 12.14.

     12.15 Further  Assurance Clause. On and after the Closing Date, Sellers,
the  Company  and  Purchaser  will take all  appropriate  action and execute all
documents,  instruments  or  conveyances  of any kind  which  may be  reasonably
necessary  or advisable to carry out any of the  provisions  hereof,  including,
without limitation, putting Purchaser in possession and operation control of the
business of the Company.

     IN WITNESS WHEREOF,  the parties have caused this Stock Purchase  Agreement
to be executed as of the date first above written.


                                    COLUMBIA/ HCA HEALTHCARE CORPORATION

                                    By:     /s/ V. Carl George
                                            Name: V. Carl George
                                            Title:

                                    VH HOLDINGS, INC.

                                    By:     /s/ V. Carl George
                                            Name: V. Carl George
                                            Title:

                                    GALEN HOLDINGS, INC.

                                    By:     /s/ V. Carl George
                                            Name: V. Carl George
                                            Title:

                                    EXPRESS SCRIPTS, INC.

                                    By:     /s/ Barrett Toan
                                            Name: Barrett Toan
                                            Title:


<PAGE>

                                    INDEX OF
                          SCHEDULES AND EXHIBITS TO THE
                      STOCK PURCHASE AGREEMENT BY AND AMONG
             COLUMBIA/HCA HEALTHCARE CORPORATION, VH HOLDINGS, INC.,
                 GALEN HOLDINGS, INC. AND EXPRESS SCRIPTS, INC.

I(a       Exclusions From "Excluded Liability" 
I(b)      Purchase Price Adjustments 
2.2(i)    Excluded Subsidiaries 
2.2(ii)   Notes Receivable 
2.2(iii)  Excluded Assets 
2.2(iv)   Employee Obligations 
2.3       Allocation of Purchase Price 
3.2(a)    Value Health Jurisdictions 
3.2(b)    MPN Jurisdictions 
3.3       Value Health Subsidiaries 
3.5       Seller Exceptions to Agreements; Conflicts
3.6(a)    Value Health and Value Health Subsidiaries (plus MedManagement)
          Financial Statements
3.6(b)    MPN Financial Statements
3.6(c)    Value Health Pro Forma Financial Statements
3.6(d)    Acquired Entities Pro Forma Balance Sheet
3.7       Liabilities Not Disclosed in Financial Statements
3.8       Transactions Outside the Ordinary Course of Business
3.8(g)    Material Adverse Changes
3.9       Legal Proceedings
3.10      Certain Contracts
3.12(a)   Labor Matters
3.12(b)   Company Plans and Multiemployer Plans
3.12(d)   Company Plan Compliance
3.13      Bank Accounts
3.14      Tax Matters
3.15      Insurance Policies
3.16      Intellectual Property
3.16(a)   Registrations and Applications
3.16(b)   Material Software Licenses
3.17      Compliance Exceptions
3.18      Environmental Conditions
5.1       Seller Regulatory Approvals
5.2       Conduct Prior to Closing
5.3(a)    Employee Matters
5.12      Intercompany Accounts
6.1       Confidentiality
6.2       Purchaser Regulatory Approvals
7.5       Opinion of Sellers' Counsel
7.11      Material Adverse Change
7.13      Trademark Acknowledgment Agreement Provisions
7.14      Columbia PBM Agreement
7.16      MedManagement Agreement Provisions
8.5       Opinion of Purchaser's Counsel
9.1(c)    Claims, Actions, Suits and Other Proceedings
9.1(d)    Value Health Payment Obligations
9.2(f)    Purchaser Indemnification of Suits

<PAGE>

                                  Schedule I(b)
                           PURCHASE PRICE ADJUSTMENTS

     A.  DEFINITIONS.  For purposes of this SCHEDULE I(B), (a) capitalized terms
used herein but not defined  herein shall have the meanings  ascribed to them in
the  Agreement,  and (b) the  following  defined  terms shall have the  meanings
indicated below:

                  "Beginning Adjusted Working Capital" shall mean the working
         capital of the Acquired Entities as reflected in the Acquired Entities
         Pro Forma Balance Sheet, subject to the following adjustments: (a) any
         current or deferred income taxes that are reflected on the Acquired
         Entities Pro Forma Balance Sheet shall be excluded from the calculation
         of Beginning Adjusted Working Capital, (b) any portion of the Schedule
         2.2(iv) Obligations that are reflected as a liability on the Acquired
         Entities Pro Forma Balance Sheet shall be excluded from the calculation
         of Beginning Adjusted Working Capital, and (c) the Reserves shall be
         excluded from the calculation of Beginning Adjusted Working Capital.
         The calculation of Beginning Adjusted Working Capital is set forth in
         EXHIBIT A hereto.

                  "Closing Adjusted Working Capital" shall mean the working
         capital of the Acquired Entities as reflected in the Closing Balance
         Sheet, subject to the following adjustments: (a) any current or
         deferred income taxes that are reflected on the Closing Balance Sheet
         shall be excluded from the calculation of Closing Adjusted Working
         Capital, (b) any portion of the Schedule 2.2(iv) Obligations that are
         reflected as a liability on the Closing Balance Sheet shall be excluded
         from the calculation of Closing Adjusted Working Capital, and (c) the
         Reserves less the Reserve Payment Amount shall be excluded from the
         calculation of Closing Adjusted Working Capital.

                  "Closing Balance Sheet" shall mean the unaudited pro forma
         combined balance sheet of the Acquired Entities as of the Effective
         Time, which balance sheet will be prepared on a consistent basis with
         the Acquired Entities Pro Forma Balance Sheet.

                  "Purchase Price Adjustment" shall mean the adjustment to the
         Base Purchase Price calculated in accordance with the provisions of
         Paragraph B of this SCHEDULE I(B).

                  "Reserves" shall mean the reserves listed in EXHIBIT B hereto.

                  "Reserves Payment Amount" shall mean the aggregate amount
         spent by the Company between the Balance Sheet Date and the Effective
         Time with respect to the Reserves, regardless of the amount spent,
         individually or in the aggregate, with respect to any or all of the
         Reserves.

                  "Schedule 2.2(iv) Obligations" shall mean the obligations of
         the Acquired Entities under (i) each of the bonus, severance and other
         arrangements described in item 17 of SCHEDULE 2.2(IV) to the Agreement
         and (ii) the 1997 Bonus Plan payments for ValueRx employees as
         described in Attachment 1 to SCHEDULE 2.2(IV), in each case, including
         any related payroll taxes.

                  "Schedule 2.2(iv) Obligations Payment Amount" shall mean the
         amount of the Schedule 2.2(iv) Obligations paid by Sellers or the
         Acquired Entities between the Balance Sheet Date and the Effective
         Time.

     B. PURCHASE PRICE  ADJUSTMENT  CALCULATION.  The Purchase Price  Adjustment
shall be the sum of the following adjustments to the Base Purchase Price:

     1. The Base Purchase  Price shall be increased (or decreased) by the amount
by which the Closing Adjusted Working Capital is greater than (or less than) the
Beginning Adjusted Working Capital.

     2. The Base  Purchase  Price shall be  increased  by the  Schedule  2.2(iv)
Obligations Payment Amount.

     3. The Base  Purchase  Price shall be  increased  by the  Reserves  Payment
Amount.

     4. The Base Purchase Price shall be decreased by an amount equal to the sum
of the Schedule  2.2(iv)  Obligations  Payment  Amount and the Reserves  Payment
Amount, multiplied by .33.

     5. The Base Purchase Price shall be decreased by the amount of any proceeds
from the Company's sale of 20,203 shares of capital stock of  Stadtlanders  Drug
Company, Inc. that are distributed to the Sellers.

<PAGE>

                                    EXHIBIT A
                                       TO
                                  SCHEDULE I(B)

<TABLE>
<CAPTION>

                                                   DECEMBER 31, 1997
<S>                                                    <C>         
                                                  ------------------                                                  

 Total current assets excluding any  deferred          $193,823,948
 income taxes per Acquired Entities Pro Forma
 Balance Sheet

 Less current liabilities per Acquired Entities       (191,290,966)
 Pro Forma Balance Sheet

 Exclude Schedule 2.2(iv) Obligations reflected           2,058,003
 on the Acquired Entities Balance Sheet

 Exclude Reserves reflected in Exhibit B                 35,637,926
                                                         ----------

 Adjusted Working Capital                               $40,228,911

</TABLE>

<PAGE>


                                    EXHIBIT B
                                       TO
                                  SCHEDULE I(B)

                     HUSKIE CASH PURCHASE RESERVES ANALYSIS


I.       Necessary Cash Reserves
<TABLE>
<CAPTION>

                                                            12/31/97                                   Adjusted
                        Item                                 Balance            Adjustments            Balance
<S>                                                              <C>                 <C>                   <C>      
- ------------------------------------------------------ -------------------- --------------------- -------------------

A) Severance/consultants/termination/outplacement              $ 3,990,651                               $ 3,990,651
B) Lease termination fees                                          821,096                                   821,096
C) Lease FMV                                                     2,982,533           $   217,467           3,200,000
D) Medintell shutdown                                            4,655,793                                 4,655,793
E) Legal entity dissolution                                         96,070                                    96,070
F) Storage termination costs                                     (115,250)               160,250              45,000
G) Davenport building FMV                                          576,072                                   576,072
H) Accrual adjustments                                           (203,875)               203,875                   -
I)  DEA reserve                                                  1,218,000                                 1,218,000
J) Pharmacy network repricing                                    1,645,000                                 1,645,000
K) Legal accrual                                                 2,000,000                                 2,000,000
L) Performance guarantees                                        1,000,000                                 1,000,000
M) Foxmeyer dispute                                              1,500,000                                 1,500,000
N) CPS consolidation expenses                                      897,635               462,365           1,360,000
O) CPS exit costs at mail facility                                (87,950)                87,950                   -
P) Rx Net consolidation                                          4,359,579                                 4,359,579
Q) H.I.D. consolidation                                          4,797,248                                 4,797,248
R) CPS consolidation/tandem conversion                           2,587,030                                 2,587,030
S) APS consolidation                                               204,000                                   204,000
T) Purchase related costs prior to closing                         675,837                                   675,837
U) Costs of administering purchase accounting                     (17,935)                34,935              17,000
V) Financial systems shutdown                                    (772,912)               825,912              53,000
W) I/S termination fees and exit costs                             148,188                                   148,188
X) Retail systems consolidation                                    106,260                                   106,260
Y) Accrued vacation on exited facilities                           450,000                                   450,000
Z) Exit CPS on-line reference system                                64,594                                    64,594
AA) Columbia DEA licensing                                          67,508                                    67,508
BB) Printed materials                                          (1,120,948)             1,120,948                   -
                                                       -------------------- --------------------- -------------------
                                                               $32,524,224            $3,113,702         $35,637,926
                                                       -------------------- --------------------- -------------------
</TABLE>

II.      Balance Sheet Reserves
<TABLE>
<CAPTION>
                                                    12/31/97                                           Adjusted
                 Item                                Balance                    Adjustments             Balance
<S>                                                           <C>                                         <C>       
- ---------------------------------------- -------------------------------- ------------------------ ------------------

A) Formulary reserve                                          $4,600,000                                  $4,600,000
B) Contract dispute reserve                                    2,000,000                                   2,000,000
C) NJ Medicaid reserve                                         2,000,000                                   2,000,000
D) Inventory reserve                                             750,000                                     750,000
E) H.I.D. A/R reserve                                            500,000                                     500,000
                                         --------------------------------                          ------------------
                                                              $9,850,000                                  $9,850,000
                                         --------------------------------                          ------------------


</TABLE>



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