CARDINAL HEALTH INC
SC 13D, 1996-02-12
DRUGS, PROPRIETARIES & DRUGGISTS' SUNDRIES
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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            WASHINGTON, D.C.  20549



                                  SCHEDULE 13D



                   UNDER THE SECURITIES EXCHANGE ACT OF 1934



                               PYXIS CORPORATION                      
                               (Name of Issuer) 



                          COMMON STOCK, $0.01 PAR VALUE                 
                         (Title of Class of Securities)


                                   747251106                            
                                 (CUSIP Number)


                                ROBERT D. WALTER
                                    CHAIRMAN
                             CARDINAL HEALTH, INC.                     
                               5555 GLENDON COURT
                              DUBLIN, OHIO  43016  
                                 (614) 717-5000                         
          (Name, Address and Telephone Number of Person Authorized to
           Receive Notices and Communications)



                               FEBRUARY 7, 1996                         
            (Date of Event which Requires Filing of this Statement)



         If the filing person has previously filed a statement on
         Schedule 13G to report the acquisition which is the subject
         of this Schedule 13D, and is filing this schedule because of
         Rule 13d-1(b)(3) or (4), check the following box / /.

         Check the following box if a fee is being paid with the
         statement /x/.


                                  Page 1 of 11<PAGE>
         
         CUSIP NO.  747251106





                                  SCHEDULE 13D


         1.   NAME OF REPORTING PERSON
              SS OR I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

              Cardinal Health, Inc.
              31-0958666

         2.   CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (a) / /

                                                               (b) / /

         3.   SEC USE ONLY

         4.   SOURCE OF FUNDS
              WC

         5.   CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS
              REQUIRED PURSUANT TO ITEMS 2(d) OR 2(e)             / /

         6.   CITIZENSHIP OR PLACE OF ORGANIZATION
              Ohio

         NUMBER OF                        7.  SOLE VOTING POWER
         SHARES                               0
         BENEFICIALLY
         OWNED BY                         8.  SHARED VOTING POWER
         EACH                                 0
         REPORTING
         PERSON                           9.  SOLE DISPOSITIVE POWER
         WITH                                 0

                                          10. SHARED DISPOSITIVE POWER
                                              0

         11.  AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON
              7,275,861 shares of Common Stock.

         12.  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES
              CERTAIN SHARES                                          / /

         13.  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11) 16.6%.
              Based upon 36,562,117 shares of Common Stock outstanding as
              of February 5, 1996, as represented by Issuer, calculated
              pursuant to Rule 13d-3(d)(1).

         14.  TYPE OF REPORTING PERSON
              HC, CO



                                    Page 2 of 11<PAGE>
         
         CUSIP NO.  747251106





         Item 1.   Security and Issuer.

                   This Schedule 13D relates to the common stock, $0.01 par
         value per share ("Pyxis Common Stock"), of Pyxis Corporation
         ("Pyxis"), a Delaware corporation.  The principal executive
         offices of Pyxis are located at 9380 Carroll Park Drive, San
         Diego, California  92121.

         Item 2.   Identity and Background.

                   This Schedule 13D is filed by Cardinal Health, Inc.
         ("Cardinal"), an Ohio corporation.  Cardinal is a national, full-
         service wholesaler distributing a broad line of pharmaceuticals,
         surgical and hospital supplies, therapeutic plasma and other
         specialty pharmaceutical products, health and beauty care
         products, and other items typically sold by hospitals, retail drug
         stores, and other health care providers.  Cardinal's principal
         executive offices are located at 5555 Glendon Court, Dublin, Ohio
         43016.  

                   Each executive officer and each director of Cardinal is
         a citizen of the United States.  The name, business address and
         present principal occupation of each executive officer and
         director are set forth in Annex I to this Schedule 13D which is
         incorporated herein by this reference.

                   During the last five years, to the best of Cardinal's
         knowledge, neither Cardinal nor any of its executive officers or
         directors has been convicted in a criminal proceeding (excluding
         traffic violations or similar misdemeanors) or has been a party to
         a civil proceeding of a judicial or administrative body of
         competent jurisdiction as a result of which Cardinal or such
         person was or is subject to a judgment, decree or final order
         enjoining future violations of, or prohibiting or mandating
         activities subject to, federal or state securities laws, or
         finding any violation with respect to such laws, and which
         judgment, decree or final order was not subsequently vacated.

         Item 3.   Source and Amount of Funds or Other Consideration.

                   Pursuant to the Stock Option Agreement, dated February
         7, 1996, between Cardinal and Pyxis (the "Stock Option
         Agreement"), Pyxis granted Cardinal an irrevocable option (the
         "Option") to purchase from Pyxis, under certain circumstances and
         subject to certain adjustments, up to 7,275,861 authorized and
         unissued shares of Pyxis Common Stock, at a price per share,
         payable in cash, equal to the lower of (x) $24.80 or (y) the
         exchange ratio under the Agreement and Plan of Merger, dated
         February 7, 1996, among Cardinal, Aztec Merger Corp., a Delaware
         corporation and a wholly owned subsidiary of Cardinal ("Subcorp"), 
         and Pyxis (the "Merger Agreement"), described under Item 4 below,
         multiplied by the closing price of common shares, without par
         value ("Cardinal Common Shares"), of Cardinal as reported on the
         New York Stock Exchange Composite Tape on the last trading day

                                    Page 3 of 11<PAGE>
         
         CUSIP NO.  747251106





         immediately preceding the date of delivery to Pyxis of written
         notice of Cardinal's exercise of the Option.  As of the date
         hereof, the Option is not exercisable.  The shares of Pyxis Common
         Stock subject to the Option would equal 19.9% of the outstanding
         Pyxis Common Stock before giving effect to the exercise of the
         Option.  Under certain circumstances, Cardinal may require Pyxis
         to, or Pyxis may be permitted to, repurchase for cash the Option
         and any shares of Pyxis Common Stock acquired pursuant to the
         exercise of the Option.

                   The Option was granted by Pyxis as a condition of and in
         consideration for Cardinal entering into the Merger Agreement.

                   The exercise of the Option for the full number of shares
         currently covered thereby would require aggregate funds of
         $170,088,003, based on an exchange ratio of .406557 and a closing
         price for Cardinal Common Share of $57.50 on February 9, 1996.  It
         is anticipated that, should the Option become exercisable and
         should Cardinal determine to exercise the Option, Cardinal would
         obtain the funds for purchase from working capital or by borrowing
         from parties whose identity is not yet known.

                   A copy of the Stock Option Agreement is included as
         Exhibit 2.2 to this Schedule 13D and is incorporated herein by
         this reference.  The foregoing description of the Stock Option
         Agreement is qualified in its entirety by reference to such
         exhibit.

         Item 4.   Purpose of Transaction.

                   In connection with the execution of the Stock Option
         Agreement, Cardinal and Pyxis entered into the Merger Agreement,
         pursuant to which, among other matters and subject to the terms
         and conditions set forth in the Merger Agreement, Subcorp will
         merge (the "Merger") with and into Pyxis.  The Option was granted
         by Pyxis as a condition of and in consideration for Cardinal
         entering into the Merger Agreement.  Consummation of the Merger is
         subject to certain conditions, including:  (i) receipt of the
         approval of the Merger Agreement by the holders of a majority of
         the outstanding shares of Pyxis Common Stock; (ii) receipt of the
         approval of issuance of the Cardinal Common Shares to be issued in
         the Merger and of the transactions contemplated by the Merger
         Agreement by the holders of a majority of the outstanding Common
         Shares; (iii) expiration or termination of all waiting periods
         applicable to the consummation of the Merger under the Hart-Scott-
         Rodino Antitrust Improvements Act of 1976, as amended; (iv) 
         registration of the Cardinal Common Shares to be issued in the
         Merger under the Securities Act of 1933, as amended; (v) receipt
         of an opinion of counsel as to the tax-free nature of certain
         aspects of the Merger; (vi) receipt of an accountant's letter
         confirming that the Merger will qualify as a pooling of interests
         transaction for financial reporting purposes; and (vii)
         satisfaction of certain other conditions.  Pursuant to the Merger
         Agreement, (a) the officers of the surviving corporation in the


                                    Page 4 of 11<PAGE>
         
         CUSIP NO.  747251106





         Merger will be the officers of Pyxis, (b) the directors of the
         surviving corporation in the Merger will be the directors of
         Subcorp, (c) each share of Pyxis Common Stock will be converted
         into .406557 of a Cardinal Common Share, subject to adjustment
         under the circumstances described in the Merger Agreement, plus
         cash in lieu of fractional shares, and (d) at the effective time
         of the Merger, the Certificate of Incorporation and By-laws of
         Pyxis, as the surviving corporation, will be amended to be
         identical (save for the name of the corporation) to those of
         Subcorp.  Upon consummation of the Merger, the Pyxis Common Stock
         will be delisted from the Nasdaq National Market.

                   A copy of the Merger Agreement is included as Exhibit
         2.1 to this Schedule 13D and is incorporated herein by this
         reference.  The foregoing description of the Merger Agreement is
         qualified in its entirety by reference to such exhibit.

                   Except as set forth herein, Cardinal does not have any
         current plans or proposals that relate to or would result in (i)
         the acquisition by any person of additional shares of Pyxis Common
         Stock or the disposition of shares of Pyxis Common Stock; (ii) an
         extraordinary corporate transaction, such as a merger,
         reorganization or liquidation, involving Pyxis or any of its
         subsidiaries; (iii) a sale or transfer of any material amount of
         assets of Pyxis or any of its subsidiaries; (iv) any change in the
         present board of directors or management of Pyxis, including any
         plans or proposals to change the number or term of directors or to
         fill any vacancies on the board; (v) any material change in the
         present capitalization or dividend policy of Pyxis; (vi) any other
         material change in Pyxis's business or corporate structure; (vii)
         any change in Pyxis's charter or bylaws, or instruments
         corresponding thereto, or other actions that may impede the
         acquisition of control of Pyxis by any person; (viii) causing a
         class of securities of Pyxis to be delisted from a national
         securities exchange or to cease to be authorized to be quoted in
         an inter-dealer quotation system of a registered national
         securities association; (ix) a class of equity securities of Pyxis
         becoming eligible for termination of registration pursuant to
         Section 12(g)(4) of the Securities Exchange Act of 1934, as
         amended; or (x) any action similar to any of those enumerated
         above.

         Item 5.   Interest in Securities of Issuer.

                   Although the Option does not allow Cardinal to purchase
         any shares of Pyxis Common Stock pursuant thereto unless and until
         the conditions to exercise specified in the Stock Option Agreement
         occur, assuming for purposes of this Item 5 that such conditions
         are satisfied and Cardinal is entitled to purchase shares of Pyxis
         Common Stock pursuant to the Option, Cardinal would be entitled to
         purchase 7,275,861 shares of Pyxis Common Stock, or approximately
         16.6% of the outstanding Pyxis Common Stock after giving effect to
         the exercise of the Option.


                                    Page 5 of 11<PAGE>
         
         CUSIP NO.  747251106






                   Cardinal does not currently have the right to acquire
         any shares of Pyxis Common Stock under the Option unless certain
         events specified in the Stock Option Agreement occur.
         Accordingly, Cardinal does not have sole or shared voting or
         dispositive power with respect to any shares of Pyxis Common
         Stock, and Cardinal disclaims beneficial ownership of Pyxis Common
         Stock subject to the Option until such events occur.  Assuming for
         purposes of this Item 5 that events occurred that would enable
         Cardinal to exercise the Option and Cardinal exercised the Option,
         Cardinal would have sole voting power and sole dispositive power
         with respect to the shares acquired pursuant to the Option,
         subject to Pyxis's right to repurchase such shares as set forth in
         the Stock Option Agreement.

                   The foregoing description of certain terms of the Stock
         Option Agreement is qualified in its entirety by reference to the
         Stock Option Agreement which is filed as Exhibit 2.2 hereto and
         which is incorporated herein by this reference.  

                   To the best of Cardinal's knowledge, no executive
         officer or director of Cardinal beneficially owns any shares of
         Pyxis Common Stock, nor (except for the issuance of the Option)
         have any transactions in Pyxis Common Stock been effected during
         the past 60 days by Cardinal or, to the best knowledge of
         Cardinal, by any executive officer or director of Cardinal.  In
         addition, no other person is known by Cardinal to have the right
         to receive or the power to direct the receipt of dividends from,
         or the proceeds from the sale of, the securities covered by this
         Schedule 13D.

         Item 6.   Contracts, Arrangements, Understandings or
                   Relationships with Respect to Securities of 
                   the Issuer.    

                   Each of the persons set forth in Annex II to this
         Schedule 13D, which Annex II is incorporated herein by this
         reference, has entered into an agreement with Cardinal
         pursuant to which, among other matters, such person has 
         agreed (i) to vote all of the shares of Pyxis Common Stock
         beneficially owned by such person or its affiliates or over
         which such person or any of its affiliates has voting power
         or control to approve the Merger and the Merger Agreement,
         (ii) not to vote such shares in favor of any other
         recapitalization, merger, consolidation or other business
         combination involving Pyxis, or acquisition of any capital
         stock (other than upon exercise of outstanding options under
         stock option plans of Pyxis in effect on February 7, 1996) or
         any material portion of the assets (except for acquisitions
         of assets in the ordinary course of business consistent with
         past practice) of Pyxis and (iii) not to, and not to permit
         any company, trust or other entity controlled by such person
         to, and not to permit any of its affiliates to, contract to
         sell, sell or otherwise transfer or dispose of any of such
         shares or any interest therein or securities convertible
         thereinto or any voting rights with respect thereto other
         than pursuant to the Merger without Cardinal's consent.  Such
         persons in the aggregate are estimated to have 


                                  Page 6 of 11<PAGE>
         
         CUSIP NO.  747251106





         voting power over approximately 4% of the outstanding shares 
         of Pyxis Common Stock, based upon 36,562,117 shares of Pyxis 
         Common Stock outstanding as of February 5, 1996, as represented 
         by Pyxis.  Cardinal may hereafter enter into similar agreements
         with other holders of Pyxis Common Stock.  A copy of the form
         of Support/Voting Agreement, dated as of February 7, 1996,
         executed by such persons is included as Exhibit 99.1 to this
         Schedule 13D and is incorporated herein by this reference.
         The foregoing description of the Support/Voting Agreement is
         qualified in its entirety by reference to such exhibit.

                   A copy of the Merger Agreement is included as
         Exhibit 2.1 to this Schedule 13D and is incorporated herein
         by this reference.  See Item 4.

                   A copy of the Stock Option Agreement is included as
         Exhibit 2.2 to this Schedule 13D and is incorporated herein
         by this reference.  See Items 3 and 5.

         Item 7.   Material to be Filed as Exhibits.

                   The following exhibits are filed as part of this
         Schedule 13D:

         Exhibit 2.1  --     Merger Agreement.

         Exhibit 2.2  --     Stock Option Agreement.

         Exhibit 99.1 --     Form of Support/Voting Agreement.




                                  Page 7 of 11<PAGE>
         
         CUSIP NO.  747251106                                    ANNEX I





                        Directors and Executive Officers

                   Set forth below are the name and present principal
         occupation of each director and executive officer of Cardinal
         Health, Inc. as of February 9, 1996.  Unless otherwise
         indicated below, the business address of each such director
         and executive officer is c/o Cardinal Health, Inc., 5555
         Glendon Court, Dublin, Ohio  43016. 

         Name                   Principal Occupation           Address

         Directors
         of Cardinal
         Health, Inc.:

         John F. Finn           Chairman and Chief Executive
                                Officer of Gardner, Inc., an
                                outdoor power equipment dis-
                                tributor.

         Robert L. Gerbig       President and Chief
                                Executive Officer of
                                Gerbig, Snell/Weisheimer
                                & Associates, Inc., an 
                                advertising agency.

         John F. Havens         Retired Chairman and Director
                                Emeritus of Banc One Corpora-
                                tion, a bank holding company. 

         Regina E. Herzlinger   Professor, Harvard University
                                Graduate School of Business
                                Administration.

         John C. Kane           President and Chief Operating
                                Officer of Cardinal Health,
                                Inc.

         George R. Manser       Chairman of Uniglobe 
                                Travel (Capital Cities)
                                Inc., a travel planning
                                services company.

         John B. McCoy          Chairman and Chief Executive
                                Officer of Banc One Corpora-
                                tion, a bank holding company.






                                  Page 8 of 11<PAGE>
         
         CUSIP NO.  747251106





         Jerry E. Robertson     Retired Executive Vice
                                President of the Life Sciences 
                                Sector and Corporate Services
                                of Minnesota Mining & Manu-
                                facturing Company, a manu-
                                facturer of industrial 
                                commercial, health care and
                                consumer products.

         L. Jack Van Fossen     Retired President and Chief
                                Executive Officer of Red Roof
                                Inns, Inc., a lodging company.

         Robert D. Walter       Chairman and Chief Executive
                                Officer of Cardinal Health,
                                Inc.

         Melburn G. Whitmire    Vice Chairman of Cardinal 
                                Health, Inc.

         Executive Officers
         of Cardinal Health, Inc.
         (that are not directors):

         David Bearman          Executive Vice President and
                                Chief Financial Officer.

         George H. Bennett, Jr. Executive Vice President, 
                                General Counsel and Secretary.

         Anthony J. Campanaro   Executive Vice President-
                                Central Group.

         James E. Clare         Executive Vice President- 
                                Southern Group.            
          
         Gary E. Close          Executive Vice President- 
                                Western Group.            
   
         Phillip A. Greth       Executive Vice President 
                                and Chief Information 
                                Officer.
         
         James F. Millar        Executive Vice President-
                                Distribution Operations
 
         Gordon A. Troup        Executive Vice President-
                                Northern Group.

                                  Page 9 of 11<PAGE>
         
         CUSIP NO.  747251106                                   ANNEX II





                  Persons Executing Support/Voting Agreements


         Dick P. Allen and certain affiliates

         Ronald R. Taylor

         Timothy J. Wollaeger












































                                 Page 10 of 11<PAGE>





                                         SIGNATURE

                   After reasonable inquiry and to the best of my
         knowledge and belief, I certify that the information set
         forth in this statement is true, complete and correct.

                                CARDINAL HEALTH, INC.


                              By: /s/    George H. Bennett, Jr.      
                                  Name:  George H. Bennett, Jr. 
                                  Title: Executive Vice President,
                                         General Counsel and Secretary

         Dated:  February 12, 1996





































                                 Page 11 of 11<PAGE>





                                 EXHIBIT INDEX

         Exhibit   Description                         

         2.1       Agreement and Plan of
                   Merger, dated February 7,
                   1996, among Cardinal Health, Inc.,
                   Aztec Merger Corp. and Pyxis 
                   Corporation

         2.2       Stock Option Agreement, dated
                   February 7, 1996, between
                   Cardinal Health, Inc. and Pyxis 
                   Corporation 

         99.1      Form of Support/Voting Agreement.


















                           AGREEMENT AND PLAN OF MERGER

                                      AMONG

                              CARDINAL HEALTH, INC.
                                  ("Cardinal"),

                                AZTEC MERGER CORP.
                   a wholly owned direct subsidiary of Cardinal
                                   ("Subcorp"),



                                       and



                                PYXIS CORPORATION
                                    ("Pyxis")











                                 February 7, 1996<PAGE>







                                TABLE OF CONTENTS


                                                                    PAGE

         AGREEMENT AND PLAN OF MERGER.............................    1
         PRELIMINARY STATEMENTS...................................    1
         AGREEMENT................................................    1

         ARTICLE I:  THE MERGER...................................    1
              1.1    The Merger...................................    1
              1.2    Effective Time...............................    2
              1.3    Effects of the Merger........................    2
              1.4    Certificate of Incorporation and Bylaws......    2
              1.5    Directors and Officers.......................    2
              1.6    Additional Actions...........................    2

         ARTICLE II:  CONVERSION OF SECURITIES....................    3
              2.1    Conversion of Capital Stock..................    3
              2.2    Exchange Ratio; Fractional Shares............    3
              2.3    Exchange of Certificates.....................    4
                     (a) Exchange Agent...........................    4
                     (b) Exchange Procedures......................    4
                     (c) Distributions with Respect to 
                          Unexchanged Shares......................    4
                     (d) No Further Ownership Rights in 
                          Pyxis Common Stock......................    5
                     (e) Termination of Exchange Fund.............    5
                     (f) No Liability.............................    5
                     (g) Investment of Exchange Fund..............    5
              2.4    Treatment of Stock Options;
                       Stock Purchase Plan........................    6

         ARTICLE III:  REPRESENTATIONS AND WARRANTIES OF 
                     CARDINAL AND SUBCORP.........................    6
              3.1    Organization and Standing....................    7
              3.2    Corporate Power and Authority................    7
              3.3    Capitalization of Cardinal...................    7
              3.4    Conflicts, Consents and Approval.............    8
              3.5    Brokerage and Finder's Fees..................    8
              3.6    Accounting Matters...........................    8
              3.7    Cardinal SEC Documents.......................    9
              3.8    Registration Statement.......................    9
              3.9    Compliance with Law..........................    9
              3.10   Litigation...................................   10
              3.11   No Material Adverse Change...................   10
              3.12   Board Recommendation.........................   10
              3.13   Undisclosed Liabilities......................   10

                                       -i-<PAGE>





                                                                    PAGE

         ARTICLE IV:  REPRESENTATIONS AND WARRANTIES OF
                        PYXIS.....................................   11
              4.1    Organization and Standing....................   11
              4.2    Subsidiaries.................................   11
              4.3    Corporate Power and Authority................   11
              4.4    Capitalization of Pyxis......................   12
              4.5    Conflicts; Consents and Approvals............   12
              4.6    No Material Adverse Change...................   13
              4.7    Pyxis SEC Documents..........................   13
              4.8    Taxes........................................   14
              4.9    Compliance with Law..........................   14
              4.10   Intellectual Property........................   14
              4.11   Title to and Condition of Properties.........   16
              4.12   Registration Statement.......................   16
              4.13   Litigation...................................   17
              4.14   Brokerage and Finder's Fees; Expenses........   17
              4.15   Accounting Matters...........................   17
              4.16   Employee Benefit Plans.......................   17
              4.17   Contracts....................................   19
              4.18   Accounts Receivable..........................   20
              4.19   Labor Relations..............................   20
              4.20   Undisclosed Liabilities......................   21
              4.21   Operation of Pyxis's Business;
                       Relationships..............................   21
              4.22   Permits; Compliance..........................   21
              4.23   Product Warranties and Liabilities...........   21
              4.24   Environmental Matters........................   22
              4.25   Opinion of Financial Advisor.................   22
              4.26   Board Recommendation.........................   22
              4.27   DGCL Section 203 and State Takeover Laws.....   23
              4.28   Lease Arrangements...........................   23
              4.29   [Intentionally Omitted]......................   23
              4.30   Pyxis Rights Agreement.......................   23

         ARTICLE V:  COVENANTS OF THE PARTIES.....................   24
              5.1    Mutual Covenants.............................   24
                     (a)  General.................................   24
                     (b)  HSR Act.................................   24
                     (c)  Other Governmental Matters..............   24
                     (d)  Pooling-of-Interests....................   24
                     (e)  Tax-Free Treatment......................   24
                     (f)  Public Announcements....................   24
                     (g)  Access..................................   25
                     (h)  Directors' and Officers' Insurance......   25
              5.2    Covenants of Cardinal........................   25
                     (a)  Cardinal Shareholders Meeting...........   25
                     (b)  Preparation of Joint Proxy Statement....   25
                     (c)  Conduct of Cardinal's Operations........   25
                     (d)  Indemnification.........................   26

                                       -ii-<PAGE>





                                                                    PAGE

                     (e)  Employee Benefits.......................   26
                     (f)  Notification of Certain Matters.........   26
              5.3    Covenants of Pyxis...........................   26
                     (a)  Pyxis Stockholders Meeting..............   26
                     (b)  Information for the Registration Statement 
                             and Preparation of Joint Proxy 
                             Statement............................   26
                     (c)  Conduct of Pyxis's Operations...........   27
                     (d)  Intellectual Property Matters...........   29
                     (e)  No Solicitation.........................   29
                     (f)  Affiliates of Pyxis.....................   30
                     (g)  Notification of Certain Matters.........   30
                     (h)  Employment Agreements...................   30

         ARTICLE VI:  CONDITIONS..................................   30
              6.1    Mutual Conditions............................   30
              6.2    Conditions to Obligations of Pyxis...........   31
              6.3    Conditions to Obligations of Cardinal and
                       Subcorp....................................   32

         ARTICLE VII:  TERMINATION AND AMENDMENT..................   33
              7.1    Termination..................................   33
              7.2    Effect of Termination........................   34
              7.3    Amendment....................................   35
              7.4    Extension; Waiver............................   35

         ARTICLE VIII:  MISCELLANEOUS.............................   35
              8.1    Survival of Representations and
                       Warranties.................................   35
              8.2    Notices......................................   35
              8.3    Interpretation...............................   36
              8.4    Counterparts.................................   36
              8.5    Entire Agreement.............................   36
              8.6    Third Party Beneficiaries....................   37
              8.7    Governing Law................................   37
              8.8    Specific Performance.........................   37
              8.9    Assignment...................................   37
              8.10   Expenses.....................................   37
              8.11   Pyxis Disclosure Schedule....................   37











                                      -iii-<PAGE>







                           AGREEMENT AND PLAN OF MERGER


                   This Agreement and Plan of Merger (this "Agreement")
         is made and entered into as of the 7th day of February, 1996,
         by and among Cardinal Health, Inc., an Ohio corporation
         ("Cardinal"), Aztec Merger Corp., a Delaware corporation and a
         wholly owned subsidiary of Cardinal ("Subcorp"), and Pyxis
         Corporation, a Delaware corporation ("Pyxis").


                              PRELIMINARY STATEMENTS

                   A.  Cardinal desires to acquire the healthcare auto-
         mation and information business and other businesses operated
         by Pyxis through the merger (the "Merger") of Subcorp with and
         into Pyxis, with Pyxis as the surviving corporation, pursuant
         to which each share of Pyxis Common Stock (as defined in Sec-
         tion 4.4) outstanding at the Effective Time (as defined in Sec-
         tion 1.2) will be converted into the right to receive Cardinal
         Common Shares (as defined in Section 3.3) as more fully pro-
         vided herein.

                   B.  Pyxis desires to combine its healthcare automa-
         tion and information and other businesses with the wholesale
         drug distribution and related businesses operated by Cardinal
         and for the holders of shares of Pyxis Common Stock ("Pyxis
         Stockholders") to have a continuing equity interest in the com-
         bined Cardinal/Pyxis businesses.

                   C.  The parties intend that the Merger constitute a
         tax-free "reorganization" within the meaning of Section
         368(a)(1)(A) of the Internal Revenue Code of 1986, as amended
         (the "Code"), by reason of Section 368(a)(2)(E) thereof.

                   D.  The parties intend that the Merger be accounted
         for as a pooling-of-interests for financial reporting purposes.

                   E.  The respective Boards of Directors of Cardinal,
         Subcorp and Pyxis have determined the Merger in the manner con-
         templated herein to be desirable and in the best interests of
         their respective shareholders and, by resolutions duly adopted,
         have approved and adopted this Agreement.


                                    AGREEMENT

                   Now, therefore, in consideration of these premises
         and the mutual and dependent promises hereinafter set forth,
         the parties hereto agree as follows:<PAGE>







                                    ARTICLE I

                                    THE MERGER

                   1.1  The Merger.  Upon the terms and subject to the
         conditions hereof, and in accordance with the provisions of the
         Delaware General Corporation Law (the "DGCL"), Subcorp shall be
         merged with and into Pyxis as soon as practicable following the
         satisfaction or waiver of the conditions set forth in Article
         VI.  Following the Merger, the separate corporate existence of
         Subcorp shall cease and Pyxis shall continue its existence un-
         der the laws of the State of Delaware.  Pyxis, in its capacity
         as the corporation surviving the Merger, is hereinafter some-
         times referred to as the "Surviving Corporation."

                   1.2  Effective Time.  The Merger shall be consummated
         by filing with the Secretary of State of the State of Delaware
         (the "Delaware Secretary of State") a certificate of merger
         (the "Certificate of Merger") in such form as is required by
         and executed in accordance with Section 251(c) of the DGCL.
         The Merger shall become effective (the "Effective Time") when
         the Certificate of Merger has been filed with the Delaware Sec-
         retary of State or at such later time as shall be specified in
         the Certificate of Merger.  Prior to the filing referred to in
         this Section 1.2, a closing (the "Closing") shall be held at
         the offices of Cardinal, 5555 Glendon Court, Dublin, Ohio
         43016, or such other place as the parties may agree on a date
         (the "Closing Date") specified by the parties, which date shall
         be as soon as practicable, but in any event within ten business
         days, following the date upon which all conditions set forth in
         Article VI hereof have been satisfied or waived or such other
         time as the parties may mutually agree.

                   1.3  Effects of the Merger.  The Merger shall have
         the effects set forth in Section 259 of the DGCL.

                   1.4  Certificate of Incorporation and Bylaws.  The
         Certificate of Merger shall provide that at the Effective Time
         (i) the Certificate of Incorporation of the Surviving Corpora-
         tion as in effect immediately prior to the Effective Time shall
         be amended as of the Effective Time so as to contain the provi-
         sions, and only the provisions, contained immediately prior
         thereto in the Certificate of Incorporation of Subcorp, except
         for Article I thereof which shall continue to read "The name of
         the corporation is 'Pyxis Corporation'", and (ii) the By-laws
         of Pyxis in effect immediately prior to the Effective Time
         shall be the By-laws of the Surviving Corporation, amended as
         of the Effective Time so as to contain the provisions, and only
         the provisions, contained in the Bylaws of Subcorp immediately

                                       -2-<PAGE>







         prior thereto; in each case until amended in accordance with
         applicable law.

                   1.5  Directors and Officers.  From and after the Ef-
         fective Time, the officers of Pyxis shall be the officers of
         the Surviving Corporation and the directors of Subcorp shall be
         the directors of the Surviving Corporation, in each case until
         their respective successors are duly elected and qualified.  On
         or prior to the Closing Date, Pyxis shall deliver to Cardinal
         evidence satisfactory to Cardinal of the resignations of the
         directors of Pyxis, such resignations to be effective as of the
         Effective Time.  

                   1.6  Additional Actions.  If, at any time after the
         Effective Time, the Surviving Corporation shall consider or be
         advised that any further deeds, assignments or assurances in
         law or any other acts are necessary or desirable to (a) vest,
         perfect or confirm, of record or otherwise, in the Surviving
         Corporation its right, title or interest in, to or under any of
         the rights, properties or assets of Pyxis, or (b) otherwise
         carry out the provisions of this Agreement, Pyxis and its of-
         ficers and directors shall be deemed to have granted to the
         Surviving Corporation an irrevocable power of attorney to ex-
         ecute and deliver all such deeds, assignments or assurances in
         law and to take all acts necessary, proper or desirable to
         vest, perfect or confirm title to and possession of such
         rights, properties or assets in the Surviving Corporation and
         otherwise to carry out the provisions of this Agreement, and
         the officers and directors of the Surviving Corporation are
         authorized in the name of Pyxis or otherwise to take any and
         all such action.


                                    ARTICLE II

                             CONVERSION OF SECURITIES

                   2.1  Conversion of Capital Stock.  At the Effective
         Time, by virtue of the Merger and without any action on the
         part of Cardinal, Subcorp or Pyxis:

                   (a)  Each share of common stock, $0.01 par value, of
              Subcorp issued and outstanding immediately prior to the
              Effective Time shall be converted into one share of common
              stock, $0.01 par value, of the Surviving Corporation.
              Such newly issued shares shall thereafter constitute all
              of the issued and outstanding capital stock of the Surviv-
              ing Corporation.

                                       -3-<PAGE>







                   (b)  Each share of Pyxis Common Stock issued and out-
              standing immediately prior to the Effective Time shall be
              converted into and represent a number of Cardinal Common
              Shares equal to the Exchange Ratio (as defined below).  

                   (c)  Each share of capital stock of Pyxis held in the
              treasury of Pyxis shall be cancelled and retired and no
              payment shall be made in respect thereof.  

                   2.2  Exchange Ratio; Fractional Shares.  The "Ex-
         change Ratio" shall equal (i) if Cardinal has not made an Ad-
         justment Election (as defined in Section 7.1(d)), .406557 or
         (ii) if Cardinal has made an Adjustment Election, then the
         product of (x) .406557 and (y) the quotient obtained by
         dividing 55.34 by the average of the closing prices of Cardinal
         Common Shares as reported on the New York Stock Exchange
         ("NYSE") Composite Tape ("NYSE Composite Tape") on each of the
         last ten trading days ending on the sixth trading day prior to
         the earlier of (I) the meeting of Pyxis Stockholders at which
         the vote to approve the Merger occurs or (II) the meeting of
         holders of Cardinal Common Shares ("Cardinal Shareholders") at
         which the vote to approve and authorize the issuance of
         Cardinal Common Shares in the Merger occurs (the "Average Share
         Price").  No certificates for fractional Cardinal Common Shares
         shall be issued as a result of the conversion provided for in
         Section 2.1(b).  To the extent that an outstanding share of
         Pyxis Common Stock would otherwise have become a fractional
         Cardinal Common Share, the holder thereof, upon presentation of
         such fractional interest represented by an appropriate certifi-
         cate for Pyxis Common Stock to the Exchange Agent pursuant to
         Section 2.3, shall be entitled to receive a cash payment
         therefor in an amount equal to the value (determined with
         reference to the closing price of Cardinal Common Shares on the
         NYSE Composite Tape on the last full trading day immediately
         prior to the Effective Time) of such fractional interest.  Such
         payment with respect to fractional shares is merely intended to
         provide a mechanical rounding off of, and is not a separately
         bargained for, consideration.  If more than one certificate
         representing shares of Pyxis Common Stock shall be surrendered
         for the account of the same holder, the number of Cardinal
         Common Shares for which certificates have been surrendered
         shall be computed on the basis of the aggregate number of
         shares represented by the certificates so surrendered.  In the
         event that prior to the Effective Time Cardinal shall declare a
         stock dividend or other distribution payable in Cardinal Common
         Shares or securities convertible into Cardinal Common Shares,
         or effect a stock split, reclassification, combination or other
         change with respect to Cardinal Common Shares, the Exchange
         Ratio set forth in this Section 2.2 shall be adjusted to

                                       -4-<PAGE>







         reflect such dividend, distribution, stock split,
         reclassification, combination or other change.

                   2.3  Exchange of Certificates.

                   (a)  Exchange Agent.  Promptly following the Effec-
         tive Time, Cardinal shall deposit with Boatmen's Trust Company
         or such other exchange agent as may be designated by Cardinal
         (the "Exchange Agent"), for the benefit of Pyxis Stockholders,
         for exchange in accordance with this Section 2.3, certificates
         representing Cardinal Common Shares issuable pursuant to
         Section 2.1 in exchange for outstanding shares of Pyxis Common
         Stock and shall from time-to-time deposit cash in an amount
         reasonably expected to be paid pursuant to Section 2.2 (such
         Cardinal Common Shares and cash, together with any dividends or
         distributions with respect thereto, being hereinafter referred
         to as the "Exchange Fund").

                   (b)  Exchange Procedures.  As soon as practicable
         after the Effective Time, the Exchange Agent shall mail to each
         holder of record of a certificate or certificates (the "Cer-
         tificates") which immediately prior to the Effective Time rep-
         resented outstanding shares of Pyxis Common Stock whose shares
         were converted into the right to receive Cardinal Common Shares
         pursuant to Section 2.1(b) (i) a letter of transmittal (which
         shall specify that delivery shall be effected, and risk of loss
         and title to the Certificates shall pass, only upon delivery of
         the Certificates to the Exchange Agent and shall be in such
         form and have such other provisions as Cardinal may reasonably
         specify) and (ii) instructions for effecting the surrender of
         the Certificates in exchange for certificates representing
         Cardinal Common Shares.  Upon surrender of a Certificate for
         cancellation to the Exchange Agent, together with a duly ex-
         ecuted letter of transmittal, the holder of such Certificate
         shall be entitled to receive in exchange therefor (x) a cer-
         tificate representing that number of Cardinal Common Shares
         which such holder has the right to receive pursuant to Section
         2.1 and (y) a check representing the amount of cash in lieu of
         fractional shares, if any, and unpaid dividends and distribu-
         tions, if any, which such holder has the right to receive pur-
         suant to the provisions of this Article II, after giving effect
         to any required withholding tax, and the shares represented by
         the Certificate so surrendered shall forthwith be cancelled.
         No interest will be paid or accrued on the cash in lieu of
         fractional shares, if any, and unpaid dividends and distribu-
         tions, if any, payable to holders of shares of Pyxis Common
         Stock.  In the event of a transfer of ownership of shares of
         Pyxis Common Stock which is not registered on the transfer
         records of Pyxis, a certificate representing the proper number
         of Cardinal Common Shares, together with a check for the cash

                                       -5-<PAGE>







         to be paid in lieu of fractional shares, if any, and unpaid
         dividends and distributions, if any, may be issued to such
         transferee if the Certificate representing such shares of Pyxis
         Common Stock held by such transferee is presented to the
         Exchange Agent, accompanied by all documents required to evi-
         dence and effect such transfer and to evidence that any appli-
         cable stock transfer taxes have been paid.  Until surrendered
         as contemplated by this Section 2.3, each Certificate shall be
         deemed at any time after the Effective Time to represent only
         the right to receive upon surrender a certificate representing
         Cardinal Common Shares and cash in lieu of fractional shares,
         if any, and unpaid dividends and distributions, if any, as pro-
         vided in this Article II. 

                   (c)  Distributions with Respect to Unexchanged
         Shares.  Notwithstanding any other provisions of this Agree-
         ment, no dividends or other distributions declared or made af-
         ter the Effective Time with respect to Cardinal Common Shares
         having a record date after the Effective Time shall be paid to
         the holder of any unsurrendered Certificate, and no cash pay-
         ment in lieu of fractional shares shall be paid to any such
         holder, until the holder shall surrender such Certificate as
         provided in this Section 2.3.  Subject to the effect of Appli-
         cable Laws (as defined in Section 3.9), following surrender of
         any such Certificate, there shall be paid to the holder of the
         certificates representing whole Cardinal Common Shares issued
         in exchange therefor, without interest, (i) at the time of such
         surrender, the amount of dividends or other distributions with
         a record date after the Effective Time theretofore payable with
         respect to such whole Cardinal Common Shares and not paid, less
         the amount of any withholding taxes which may be required
         thereon, and (ii) at the appropriate payment date subsequent to
         surrender, the amount of dividends or other distributions with
         a record date after the Effective Time but prior to surrender
         and a payment date subsequent to surrender payable with respect
         to such whole Cardinal Common Shares, less the amount of any
         withholding taxes which may be required thereon.

                   (d)  No Further Ownership Rights in Pyxis Common
         Stock.  All Cardinal Common Shares issued upon surrender of
         Certificates in accordance with the terms hereof (including any
         cash paid pursuant to this Article II) shall be deemed to have
         been issued in full satisfaction of all rights pertaining to
         such shares of Pyxis Common Stock represented thereby, and from
         and after the Effective Time there shall be no further regis-
         tration of transfers on the stock transfer books of Pyxis of
         shares of Pyxis Common Stock.  If, after the Effective Time,
         Certificates are presented to the Surviving Corporation for any
         reason, they shall be cancelled and exchanged as provided in
         this Section 2.3.  Certificates surrendered for exchange by any

                                       -6-<PAGE>







         person constituting an "affiliate" of Pyxis for purposes of
         Rule 145(c) under the Securities Act of 1933, as amended (the
         "Securities Act"), shall not be exchanged until Cardinal has
         received written undertakings from such person in the form at-
         tached hereto as Exhibit A. 

                   (e)  Termination of Exchange Fund.  Any portion of
         the Exchange Fund which remains undistributed to Pyxis Stock-
         holders for six months after the Effective Time shall be deliv-
         ered to Cardinal, upon demand thereby, and holders of shares of
         Pyxis Common Stock who have not theretofore complied with this
         Section 2.3 shall thereafter look only to Cardinal for payment
         of any claim to Cardinal Common Shares, cash in lieu of frac-
         tional shares thereof, or dividends or distributions, if any,
         in respect thereof.

                   (f)  No Liability.  None of Cardinal, the Surviving
         Corporation or the Exchange Agent shall be liable to any person
         in respect of any shares of Pyxis Common Stock (or dividends or
         distributions with respect thereto) or cash from the Exchange
         Fund delivered to a public official pursuant to any applicable
         abandoned property, escheat or similar law.  If any Certifi-
         cates shall not have been surrendered prior to seven years af-
         ter the Effective Time of the Merger (or immediately prior to
         such earlier date on which any cash, any cash in lieu of frac-
         tional shares or any dividends or distributions with respect to
         whole shares of Pyxis Common Stock in respect of such Certifi-
         cate would otherwise escheat to or become the property of any
         Governmental Authority (as defined in Section 3.4)), any such
         cash, dividends or distributions in respect of such Certificate
         shall, to the extent permitted by Applicable Law (as defined in
         Section 3.9), become the property of Cardinal, free and clear
         of all claims or interest of any person previously entitled
         thereto.

                   (g)  Investment of Exchange Fund.  The Exchange Agent
         shall invest any cash included in the Exchange Fund, as di-
         rected by Cardinal, on a daily basis.  Any interest and other
         income resulting from such investments shall be paid to
         Cardinal upon termination of the Exchange Fund pursuant to
         Section 2.3(e).  

                   2.4  Treatment of Stock Options; Stock Purchase Plan.

                   (a)  Prior to the Effective Time, Cardinal and Pyxis
         shall take all such actions as may be necessary to cause each
         unexpired and unexercised option under stock option plans of
         Pyxis in effect on the date hereof which has been granted to
         current or former directors, officers, employees, consultants
         or independent contractors of Pyxis by Pyxis (each, an "Pyxis

                                       -7-<PAGE>







         Option") to be automatically converted at the Effective Time
         into an option (a "Cardinal Exchange Option") to purchase that
         number of Cardinal Common Shares equal to the number of shares
         of Pyxis Common Stock issuable immediately prior to the Effec-
         tive Time upon exercise of the Pyxis Option (without regard to
         actual restrictions on exercisability) multiplied by the Ex-
         change Ratio, with an exercise price equal to the exercise
         price which existed under the corresponding Pyxis Option di-
         vided by the Exchange Ratio, and with other terms and condi-
         tions that are the same as the terms and conditions of such
         Pyxis Option immediately before the Effective Time; provided
         that with respect to any Pyxis Option that is an "incentive
         stock option" within the meaning of Section 422 of the Code,
         the foregoing conversion shall be carried out in a manner sat-
         isfying the requirements of Section 424(a) of the Code.  In
         connection with the issuance of Cardinal Exchange Options,
         Cardinal shall (i) reserve for issuance the number of Cardinal
         Common Shares that will become subject to Cardinal Exchange Op-
         tions pursuant to this Section 2.4 and (ii) from and after the
         Effective Time, upon exercise of Cardinal Exchange Options,
         make available for issuance all Cardinal Common Shares covered
         thereby, subject to the terms and conditions applicable
         thereto. 

                   (b)  Pyxis agrees to issue treasury shares of Pyxis,
         to the extent available, upon the exercise of Pyxis Options
         prior to the Effective Time.

                   (c)  Cardinal agrees to file with the Securities and
         Exchange Commission (the "Commission") as soon as reasonably
         practicable after the Closing Date a registration statement on
         Form S-8 or other appropriate form under the Securities Act to
         register Cardinal Common Shares issuable upon exercise of the
         Cardinal Exchange Options and use its reasonable efforts to
         cause such registration statement to remain effective until the
         exercise or expiration of such options.

                   (d)  Pyxis shall terminate the Pyxis Employee Stock
         Purchase Plan (the "Pyxis Purchase Plan") immediately prior to
         the Effective Time.  Unless Cardinal and Pyxis shall otherwise
         agree in writing prior to the Effective Time, all amounts that
         have been withheld but not yet applied to purchase Pyxis Common
         Stock pursuant to the Pyxis Purchase Plan as of the termination
         date shall be refunded, without interest, pursuant to the terms
         of the Pyxis Purchase Plan.




                                       -8-<PAGE>







                                   ARTICLE III

              REPRESENTATIONS AND WARRANTIES OF CARDINAL AND SUBCORP

                   In order to induce Pyxis to enter into this Agree-
         ment, Cardinal and Subcorp hereby represent and warrant to
         Pyxis that the statements contained in this Article III are
         true, correct and complete.  

                   3.1  Organization and Standing.  Each of Cardinal and
         Subcorp is a corporation duly organized, validly existing and
         in good standing under the laws of its state of incorporation
         with full power and authority (corporate and other) to own,
         lease, use and operate its properties and to conduct its busi-
         ness as and where now owned, leased, used, operated and con-
         ducted.  Each of Cardinal and Subcorp is duly qualified to do
         business and in good standing in each jurisdiction in which the
         nature of the business conducted by it or the property it owns,
         leases or operates, makes such qualification necessary, except
         where the failure to be so qualified or in good standing in
         such jurisdiction would not have a material adverse effect on
         Cardinal.  Cardinal is not in default in the performance,
         observance or fulfillment of any provision of its Articles of
         Incorporation, as amended and restated (the "Cardinal
         Articles"), or Code of Regulations, as amended and restated,
         and Subcorp is not in default in the performance, observance or
         fulfillment of any provisions of its Certificate of Incorpora-
         tion or Bylaws.

                   3.2  Corporate Power and Authority.  Each of Cardinal
         and Subcorp has all requisite corporate power and authority to
         enter into this Agreement and, subject to authorization of the
         issuance of Cardinal Common Shares issuable in the Merger and
         the transactions contemplated hereby by the holders of Cardinal
         Common Shares ("Cardinal Shareholders"), to consummate the
         transactions contemplated by this Agreement.  The execution and
         delivery of this Agreement and the consummation of the transac-
         tions contemplated hereby have been duly authorized by all nec-
         essary corporate action on the part of each of Cardinal and
         Subcorp, subject to authorization of the issuance of Cardinal
         Common Shares issuable in the Merger and the transactions con-
         templated hereby by Cardinal Shareholders.  This Agreement has
         been duly executed and delivered by each of Cardinal and Sub-
         corp, and constitutes the legal, valid and binding obligation
         of each of Subcorp and Cardinal enforceable against each of
         them in accordance with its terms.

                   3.3  Capitalization of Cardinal.  As of January 31,
         1996, Cardinal's authorized capital stock consisted solely of
         (a) 100,000,000 common shares, without par value ("Cardinal

                                       -9-<PAGE>







         Common Shares"), of which (i) 48,654,584 shares were issued and
         outstanding, (ii) 203,492 shares were issued and held in
         treasury (which does not include the shares reserved for issu-
         ance as set forth in clause (a)(iii) below) and (iii) 
         3,729,200.5 shares were reserved for issuance upon the exercise
         or conversion of options, warrants or convertible securities
         granted or issuable by Cardinal, (b) 5,000,000 Class B common
         shares, without par value ("Cardinal Class B Common Shares"),
         none of which was issued and outstanding or reserved for issu-
         ance, and (c) 500,000 Non-Voting Preferred Shares, without par
         value, none of which was issued and outstanding or reserved for
         issuance.  Each outstanding share of Cardinal capital stock is,
         and all Cardinal Common Shares to be issued in connection with
         the Merger will be, duly authorized and validly issued, fully
         paid and nonassessable, and each outstanding share of Cardinal
         capital stock has not been, and all Cardinal Common Shares to
         be issued in connection with the Merger will not be, issued in
         violation of any preemptive or similar rights.  As of the date
         hereof, other than as set forth in the first sentence hereof or
         in Section 3.3 to the disclosure schedule (the "Cardinal Dis-
         closure Schedule") delivered by Cardinal to Pyxis and dated the
         date hereof, there are no outstanding subscriptions, options,
         warrants, puts, calls, agreements, understandings, claims or
         other commitments or rights of any type relating to the issu-
         ance, sale or transfer by Cardinal of any equity securities of
         Cardinal, nor are there outstanding any securities which are
         convertible into or exchangeable for any shares of capital
         stock of Cardinal.  Except as set forth in Section 3.3 to the
         Cardinal Disclosure Schedule, Cardinal has not agreed to
         register any securities under the Securities Act or under any
         state securities law or granted registration rights to any
         person or entity.

                   3.4  Conflicts, Consents and Approval.  Neither the
         execution and delivery of this Agreement by Cardinal or Subcorp
         nor the consummation of the transactions contemplated hereby
         will:

                   (a)  conflict with, or result in a breach of any pro-
              vision of the Cardinal Articles or Code of Regulations, as
              amended and restated, of Cardinal or the Certificate of
              Incorporation or Bylaws of Subcorp;

                   (b)  violate, or conflict with, or result in a breach
              of any provision of, or constitute a default (or an event
              which, with the giving of notice, the passage of time or
              otherwise, would constitute a default) under, or entitle
              any party (with the giving of notice, the passage of time
              or otherwise) to terminate, accelerate, modify or call a

                                       -10-<PAGE>







              default under, or result in the creation of any lien, se-
              curity interest, charge or encumbrance upon any of the
              properties or assets of Cardinal or any of its subsidiar-
              ies under, any of the terms, conditions or provisions of
              any note, bond, mortgage, indenture, deed of trust, li-
              cense, contract, undertaking, agreement, lease or other
              instrument or obligation to which Cardinal or any of its
              subsidiaries is a party;

                   (c)  violate any order, writ, injunction, decree,
              statute, rule or regulation, applicable to Cardinal or any
              of its subsidiaries or their respective properties or as-
              sets; or

                   (d)  require any action or consent or approval of, or
              review by, or registration or filing by Cardinal or any of
              its affiliates with any third party or any court, arbitral
              tribunal, administrative agency or commission or other
              governmental or regulatory body, agency, instrumentality
              or authority (a "Governmental Authority"), other than (i)
              authorization of the issuance of Cardinal Common Shares
              issuable in the Merger and the transactions contemplated
              hereby by Cardinal Shareholders, (ii) authorization for
              inclusion of the Cardinal Common Shares to be issued in
              the Merger and the transactions contemplated hereby on the
              NYSE, subject to official notice of issuance, (iii) ac-
              tions required by the Hart-Scott-Rodino Antitrust Improve-
              ments Act of 1976, as amended, and the rules and regula-
              tions promulgated thereunder (the "HSR Act"), and (iv)
              registrations or other actions required under federal and
              state securities laws as are contemplated by this Agree-
              ment; 

         except in the case of (b), (c) and (d) for any of the foregoing
         that would not, individually or in the aggregate, have a mate-
         rial adverse effect on Cardinal.

                   3.5  Brokerage and Finder's Fees.  Except for
         Cardinal's obligation to Smith Barney Inc. ("Smith Barney"),
         neither Cardinal nor any shareholder, director, officer or em-
         ployee thereof, has incurred or will incur on behalf of
         Cardinal, any brokerage, finder's or similar fee in connection
         with the transactions contemplated by this Agreement.

                   3.6  Accounting Matters.  Neither Cardinal nor any of
         its affiliates has taken or agreed to take any action that
         (without giving effect to any actions taken or agreed to be
         taken by Pyxis or any of its affiliates) would prevent Cardinal
         from accounting for the business combination to be effected by

                                       -11-<PAGE>







         the Merger as a pooling-of-interests for financial reporting
         purposes.

                   3.7  Cardinal SEC Documents.  Cardinal has timely
         filed with the Commission all forms, reports, schedules, state-
         ments and other documents required to be filed by it since
         December 31, 1992 under the Securities Exchange Act of 1934, as
         amended (together with the rules and regulations thereunder,
         the "Exchange Act") or the Securities Act (such documents, as
         supplemented and amended since the time of filing, collec-
         tively, the "Cardinal SEC Documents").  The Cardinal SEC Docu-
         ments, including, without limitation, any financial statements
         or schedules included therein, at the time filed (and, in the
         case of registration statements and proxy statements, on the
         dates of effectiveness and the dates of mailing, respectively)
         (a) did not contain any untrue statement of a material fact or
         omit to state a material fact required to be stated therein or
         necessary in order to make the statements therein, in light of
         the circumstances under which they were made, not misleading,
         and (b) complied in all material respects with the applicable
         requirements of the Exchange Act and the Securities Act, as the
         case may be.  The financial statements of Cardinal included in
         the Cardinal SEC Documents at the time filed (and, in the case
         of registration statements and proxy statements, on the date of
         effectiveness and the date of mailing, respectively) complied
         as to form in all material respects with applicable accounting
         requirements and with the published rules and regulations of
         the Commission with respect thereto, were prepared in ac-
         cordance with generally accepted accounting principles applied
         on a consistent basis during the periods involved (except as
         may be indicated in the notes thereto or, in the case of unau-
         dited statements, as permitted by Form 10-Q of the Commission),
         and fairly present (subject in the case of unaudited statements
         to normal, recurring audit adjustments) the consolidated finan-
         cial position of Cardinal and its consolidated subsidiaries as
         at the dates thereof and the consolidated results of their op-
         erations and cash flows for the periods then ended.

                   3.8  Registration Statement.  None of the information
         provided by Cardinal for inclusion in the registration state-
         ment on Form S-4 to be filed with the Commission by Cardinal
         under the Securities Act, including the prospectus (as amended,
         supplemented or modified, the "Prospectus") relating to
         Cardinal Common Shares to be issued in the Merger and the joint
         proxy statement and form of proxies relating to the vote of
         Pyxis Stockholders with respect to the Merger and the vote of
         Cardinal Shareholders with respect to the Merger (collectively
         and as amended, supplemented or modified, the "Joint Proxy
         Statement") contained therein (such registration statement as
         amended, supplemented or modified, the "Registration

                                       -12-<PAGE>







         Statement"), at the time the Registration Statement becomes
         effective or, in the case of the Joint Proxy Statement, at the
         date of mailing, will contain any untrue statement of a
         material fact or omit to state any material fact required to be
         stated therein or necessary in order to make the statements
         therein, in light of the circumstances under which they are
         made, not misleading.  Each  of the Registration Statement and
         Joint Proxy Statement, except for such portions thereof that
         relate only to Pyxis, will comply as to form in all material
         respects with the provisions of the Securities Act and Exchange
         Act.

                   3.9  Compliance with Law.  Cardinal is in compliance
         with, and at all times since December 31, 1992 has been in com-
         pliance with, all applicable laws, statutes, orders, rules,
         regulations, policies or guidelines promulgated, or judgments,
         decisions or orders entered by any Governmental Authority (col-
         lectively, "Applicable Laws") relating to Cardinal or its busi-
         ness or properties, except where the failure to be in compli-
         ance therewith could not reasonably be expected to have a mate-
         rial adverse effect on Cardinal.

                   3.10  Litigation.  Except as set forth in Section
         3.10 to the Cardinal Disclosure Schedule delivered by Cardinal
         to Pyxis and dated the date hereof or in the Cardinal SEC Docu-
         ments, there is no suit, claim, action, proceeding or investi-
         gation (an "Action") pending or, to the knowledge of Cardinal,
         threatened against Cardinal which, individually or in the ag-
         gregate, could reasonably be expected to have a material ad-
         verse effect on Cardinal or a material adverse effect on the
         ability of Cardinal to consummate the transactions contemplated
         hereby.  Cardinal is not subject to any outstanding order,
         writ, injunction or decree which, individually or in the
         aggregate, insofar as can be reasonably foreseen, could have a
         material adverse effect on Cardinal or a material adverse
         effect on the ability of Cardinal to consummate the
         transactions contemplated hereby.  Except as set forth in
         Section 3.10 to the Cardinal Disclosure Schedule, since Decem-
         ber 31, 1992, Cardinal has not been subject to any outstanding
         order, writ, injunction or decree relating to Cardinal's method
         of doing business or its relationship with past, existing or
         future users or purchasers of any goods or services of
         Cardinal.

                   3.11  No Material Adverse Change.  Except as set
         forth in Section 3.11 to the Cardinal Disclosure Schedule,
         since June 30, 1995, Cardinal has conducted its business in the
         ordinary course, consistent with past practice, and there has
         been no (i) material adverse change in the assets, liabilities,
         results of operations, business or financial condition of

                                       -13-<PAGE>







         Cardinal and its subsidiaries taken as a whole or (ii) material
         adverse effect on the ability of Cardinal to consummate the
         transactions contemplated hereby.

                   3.12  Board Recommendation.  The Board of Directors
         of Cardinal, at a meeting duly called and held, has by
         unanimous vote of those directors present (who constituted 100%
         of the directors then in office) (i) determined that this
         Agreement and the transactions contemplated hereby, including
         the Merger, taken together, are fair to and in the best
         interests of Cardinal and the Cardinal Shareholders, and (ii)
         resolved to recommend that the Cardinal Shareholders approve
         and authorize the issuance of Cardinal Common Shares in the
         Merger and the transactions contemplated hereby.

                   3.13  Undisclosed Liabilities.  Except (i) as and to
         the extent disclosed or reserved against on the supplemental
         consolidated balance sheet of Cardinal as of September 30, 1995
         included in the Cardinal SEC Documents, (ii) as incurred after
         the date thereof in the ordinary course of business consistent
         with prior practice and not prohibited by this Agreement or
         (iii) as set forth in Section 3.13 to the Cardinal Disclosure
         Schedule, Cardinal does not have any liabilities or obligations
         of any nature, whether known or unknown, absolute, accrued,
         contingent or otherwise and whether due or to become due, that,
         individually or in the aggregate, have or could reasonably be
         expected to have a material adverse effect on Cardinal.  


                                    ARTICLE IV

                     REPRESENTATIONS AND WARRANTIES OF PYXIS

                   In order to induce Subcorp and Cardinal to enter into
         this Agreement, Pyxis hereby represents and warrants to
         Cardinal and Subcorp that the statements contained in this
         Article IV are true, correct and complete.  

                   4.1  Organization and Standing.  Pyxis is a corpo-
         ration duly organized, validly existing and in good standing
         under the laws of the State of Delaware with full power and
         authority (corporate and other) to own, lease, use and operate
         its properties and to conduct its business as and where now
         owned, leased, used, operated and conducted.  Pyxis is duly
         qualified to do business and in good standing in each jurisdic-
         tion listed in Section 4.1 to the disclosure schedule (the
         "Pyxis Disclosure Schedule") delivered by Pyxis to Cardinal and
         dated the date hereof, is not qualified to do business in any
         other jurisdiction and neither the nature of the business
         conducted by it nor the property it owns, leases or operates

                                       -14-<PAGE>







         requires it to qualify to do business as a foreign corporation
         in any other jurisdiction, except where the failure to be so
         qualified or in good standing in such jurisdiction would not
         have a material adverse effect on Pyxis.  Pyxis is not in
         default in the performance, observance or fulfillment of any
         provision of its Certificate of Incorporation, as amended and
         restated, or Bylaws.

                   4.2  Subsidiaries.  Pyxis does not own, directly or
         indirectly, any equity or other ownership interest in any cor-
         poration, partnership, joint venture or other entity or en-
         terprise, except as set forth in Section 4.2 to the Pyxis
         Disclosure Schedule.  Except as set forth in Section 4.2 to the
         Pyxis Disclosure Schedule, Pyxis is not subject to any ob-
         ligation or requirement to provide funds to or make any invest-
         ment (in the form of a loan, capital contribution or otherwise)
         in any such entity.  Pyxis owns directly or indirectly each of
         the outstanding shares of capital stock (or other ownership
         interests having by their terms ordinary voting power to elect
         a majority of directors or others performing similar functions
         with respect to such subsidiary) of each of Pyxis's
         subsidiaries.  Each of the outstanding shares of capital stock
         of each of Pyxis's subsidiaries is duly authorized, validly
         issued, fully paid and nonassessable, and is owned, directly or
         indirectly, by Pyxis free and clear of all liens, pledges,
         security interests, claims or other encumbrances.  The
         following information for each subsidiary of Pyxis is set forth
         in Section 4.2 to the Pyxis Disclosure Schedule, as applicable:
         (i) its name and jurisdiction of incorporation or organization;
         (ii) its authorized capital stock or share capital; and (iii)
         the number of issued and outstanding shares of capital stock or
         share capital and the record owner(s) thereof.  Other than as
         set forth in Section 4.2 to the Pyxis Disclosure Schedule,
         there are no outstanding subscriptions, options, warrants,
         puts, calls, agreements, understandings, claims or other com-
         mitments or rights of any type relating to the issuance, sale
         or transfer of any securities of any subsidiary of Pyxis, nor
         are there outstanding any securities which are convertible into
         or exchangeable for any shares of capital stock of any subsid-
         iary of Pyxis; and no subsidiary of Pyxis has any obligation of
         any kind to issue any additional securities or to pay for secu-
         rities of any subsidiary of Pyxis or any predecessor thereof.

                   4.3  Corporate Power and Authority.  Pyxis has all
         requisite corporate power and authority to enter into this
         Agreement and, subject to authorization of the Merger and the
         transactions contemplated hereby by Pyxis Stockholders, to con-
         summate the transactions contemplated by this Agreement.  The
         execution and delivery of this Agreement and the consummation

                                       -15-<PAGE>







         of the transactions contemplated hereby have been duly autho-
         rized by all necessary corporate action on the part of Pyxis,
         subject to authorization of the Merger and the transactions
         contemplated hereby by Pyxis Stockholders.  This Agreement has
         been duly executed and delivered by Pyxis and constitutes the
         legal, valid and binding obligation of Pyxis enforceable
         against it in accordance with its terms.

                   4.4  Capitalization of Pyxis.  As of February 5,
         1996, Pyxis's authorized capital stock consisted solely of (a)
         100,000,000 shares of common stock, $0.01 par value per share
         ("Pyxis Common Stock"), of which (i) 36,562,117 shares were is-
         sued and outstanding, (ii) no shares were issued and held in
         treasury (which does not include the shares reserved for issu-
         ance set forth in clauses (iii) and (iv) below), (iii)
         4,279,985 shares were reserved for issuance upon the exercise
         or conversion of outstanding options, warrants or convertible
         securities granted or issued by Pyxis with an average weighted
         exercise price of $16.32 and (iv) 300,000 shares were reserved
         for issuance under the Pyxis Purchase Plan, and (b) 10,000,000
         shares of preferred stock, $0.01 par value per share ("Pyxis
         Preferred Stock"), none of which was issued and outstanding or
         reserved for issuance and 50,000 shares of which are designated
         as "Series A Participating Preferred Stock."  Each outstanding
         share of Pyxis capital stock is duly authorized and validly
         issued, fully paid and nonassessable, and has not been issued
         in violation of any preemptive or similar rights.  Other than
         as set forth in the first sentence hereof, in Section 4.4 to
         the Pyxis Disclosure Schedule or as contemplated by the Stock
         Option Agreement (as defined in Section 4.27), there are no
         outstanding subscriptions, options, warrants, puts, calls,
         agreements, understandings, claims or other commitments or
         rights of any type relating to the issuance, sale or transfer
         of any securities of Pyxis, nor are there outstanding any secu-
         rities which are convertible into or exchangeable for any
         shares of capital stock of Pyxis; and Pyxis has no obligation
         of any kind to issue any additional securities or to pay for
         securities of Pyxis or any predecessor.  The issuance and sale
         of all of the shares of capital stock described in this Section
         4.4 have been in compliance with federal and state securities
         laws.  The Pyxis Disclosure Schedule accurately sets forth the
         names of, and the number of shares of each class (including,
         the number of shares issuable upon exercise of Pyxis Options,
         and the exercise price with respect thereto) and the number of
         options and warrants held by, all holders of options or war-
         rants to purchase Pyxis capital stock.  Except as set forth in
         Section 4.4 to the Pyxis Disclosure Schedule, Pyxis has not
         agreed to register any securities under the Securities Act or
         under any state securities law or granted registration rights
         to any person or entity.

                                       -16-<PAGE>







                   4.5  Conflicts; Consents and Approvals.  Neither the
         execution and delivery of this Agreement by Pyxis, nor the con-
         summation of the transactions contemplated hereby will:

                   (a)  conflict with, or result in a breach of any pro-
              vision of the Certificate of Incorporation, as amended and
              restated, or Bylaws of Pyxis;

                   (b)  violate, or conflict with, or result in a breach
              of any provision of, or constitute a default (or an event
              which, with the giving of notice, the passage of time or
              otherwise, would constitute a default) under, or entitle
              any party (with the giving of notice, the passage of time
              or otherwise) to terminate, accelerate, modify or call a
              default under, or result in the creation of any lien, se-
              curity interest, charge or encumbrance upon any of the
              properties or assets of Pyxis or any of its subsidiaries
              under, any of the terms, conditions or provisions of any
              note, bond, mortgage, indenture, deed of trust, license,
              contract, undertaking, agreement, lease or other instru-
              ment or obligation to which Pyxis or any of its subsidiar-
              ies is a party;

                   (c)  violate any order, writ, injunction, decree,
              statute, rule or regulation applicable to Pyxis or any of
              its subsidiaries or any of their respective properties or
              assets; or

                   (d)  require any action or consent or approval of, or
              review by, or registration or filing by Pyxis or any of
              its affiliates with any third party or any Governmental
              Authority, other than (i) authorization of the Merger and
              the transactions contemplated hereby by Pyxis Sharehold-
              ers, (ii) actions required by the HSR Act, (iii) registra-
              tions or other actions required under federal and state
              securities laws as are contemplated by this Agreement and
              (iv) consents or approvals of any Governmental Authority
              set forth in Section 4.5 to the Pyxis Disclosure Schedule.

         except in the case of (b), (c) and (d) for any of the foregoing
         that would not, individually or in the aggregate, have a mate-
         rial adverse effect on Pyxis.

                   4.6  No Material Adverse Change.  Except as set forth
         in Section 4.6 to the Pyxis Disclosure Schedule, since June 30,
         1995, Pyxis has conducted its business in the ordinary course,
         consistent with past practice, and there has been no  (i) mate-
         rial adverse change in the assets, liabilities, results of op-
         erations, business or financial condition of Pyxis and its sub-
         sidiaries taken as a whole or (ii) material adverse effect on

                                       -17-<PAGE>







         the ability of Pyxis to consummate the transactions contem-
         plated hereby.

                   4.7  Pyxis SEC Documents.  Pyxis has timely filed
         with the Commission all forms, reports, schedules, statements
         and other documents required to be filed by it since December
         31, 1992 under the Exchange Act or the Securities Act (such
         documents, as supplemented and amended since the time of fil-
         ing, collectively, the "Pyxis SEC Documents").  The Pyxis SEC
         Documents, including, without limitation, any financial state-
         ments or schedules included therein, at the time filed (and, in
         the case of registration statements and proxy statements, on
         the dates of effectiveness and the dates of mailing, respec-
         tively) (a) did not contain any untrue statement of a material
         fact or omit to state a material fact required to be stated
         therein or necessary in order to make the statements therein,
         in light of the circumstances under which they were made, not
         misleading, and (b) complied in all material respects with the
         applicable requirements of the Exchange Act and the Securities
         Act, as the case may be.  The financial statements of Pyxis in-
         cluded in the Pyxis SEC Documents at the time filed (and, in
         the case of registration statements and proxy statements, on
         the date of effectiveness and the date of mailing, respec-
         tively) complied as to form in all material respects with ap-
         plicable accounting requirements and with the published rules
         and regulations of the Commission with respect thereto, were
         prepared in accordance with generally accepted accounting prin-
         ciples applied on a consistent basis during the periods in-
         volved (except as may be indicated in the notes thereto or, in
         the case of unaudited statements, as permitted by Form 10-Q of
         the Commission), and fairly present (subject in the case of
         unaudited statements to normal, recurring audit adjustments)
         the consolidated financial position of Pyxis as at the dates
         thereof and the consolidated results of its operations and cash
         flows for the periods then ended.

                   4.8  Taxes.  Pyxis has duly filed all federal, and
         material state, local and foreign income, franchise, excise,
         real and personal property and other tax returns and reports
         (including, but not limited to, those filed on a consolidated,
         combined or unitary basis) required to have been filed by Pyxis
         prior to the date hereof.  All of the foregoing returns and
         reports are true and correct in all material respects, and
         Pyxis has paid or, prior to the Effective Time, will pay all
         taxes, interest and penalties required to be paid in respect of
         the periods covered by such returns or reports to any federal,
         state, foreign, local or other taxing authority.  Pyxis has
         paid or made adequate provision in the financial statements of
         Pyxis included in the Pyxis SEC Documents for all taxes payable
         in respect of all periods ending on or prior to September 30,

                                       -18-<PAGE>







         1995.  Neither Pyxis nor any of its subsidiaries will have any
         material liability for any taxes in excess of the amounts so
         paid or reserves so established and neither Pyxis nor any of
         its subsidiaries is delinquent in the payment of any material
         tax, assessment or governmental charge and none of them has
         requested any extension of time within which to file any re-
         turns in respect of any fiscal year which have not since been
         filed.  No deficiencies for any tax, assessment or governmental
         charge have been proposed in writing, asserted or assessed
         (tentatively or definitely), in each case, by any taxing au-
         thority, against Pyxis or any of its subsidiaries for which
         there are not adequate reserves.  Except as set forth in Sec-
         tion 4.8 to the Pyxis Disclosure Schedule, neither Pyxis nor
         any of its subsidiaries is the subject of any Tax audit.  As of
         the date of this Agreement, there are no pending requests for
         waivers of the time to assess any such tax, other than those
         made in the ordinary course and for which payment has been made
         or there are adequate reserves.  The federal income tax returns
         for the years ended December 31, 1992, 1993 and 1994 of Pyxis
         and its subsidiaries (excluding Allied Pharmacy Management,
         Inc. and the subsidiaries thereof) are being audited by the In-
         ternal Revenue Service and all federal income tax returns
         through the fiscal year ending December 31, 1991 have been au-
         dited by the Internal Revenue Service.  For the purposes of
         this Agreement, the term "tax" shall include all federal,
         state, local and foreign taxes including interest and penalties
         thereon.  Pyxis has not filed an election under Section 341(f)
         of the Code to be treated as a consenting corporation.  

                   4.9  Compliance with Law.  Except as set forth in
         Section 4.9 to the Pyxis Disclosure Schedule, Pyxis is in
         compliance with, and at all times since December 31, 1992 has
         been in compliance with, all Applicable Laws relating to Pyxis
         or its business or properties, including, without limitation,
         laws regarding the provision of insurance, third party
         administration and primary health care services, the
         Prescription Drug Marketing Act, the Federal Controlled
         Substances Act of 1970, the Food, Drug and Cosmetic Act, any
         federal or state Pharmacy Practice Acts, Controlled Substance
         Acts, Dangerous Drugs Acts and Food, Drug and Cosmetic Acts,
         the Occupational Safety and Health Act and the regulations
         promulgated thereunder ("OSHA") and all rules of professional
         conduct applicable to Pyxis or by which any of its properties
         are bound or subject, except where the failure to be in
         compliance therewith could not reasonably be expected to have a
         material adverse effect on Pyxis.  Pyxis has heretofore
         provided Cardinal with copies of all citations heretofore
         issued to Pyxis under OSHA and made available copies of all
         material correspondence from and to the Occupational Safety and

                                       -19-<PAGE>







         Health Administration, any other Governmental Authority and any
         inspectors during the past three years.

                   4.10  Intellectual Property.

                   (a)  Set forth in Section 4.10 to the Pyxis Disclo-
         sure Schedule is a true and complete list of (i) all of Pyxis's
         foreign and domestic material patents, patent applications,
         invention disclosures, trademarks, service marks, tradenames
         (and any registrations or applications for registration for any
         of the foregoing) and all material design right and copyright
         applications and registrations and (ii) all agreements to which
         Pyxis is a party which concern any of the Intellectual Property
         ("Intellectual Property" shall mean all intellectual property
         or other proprietary rights of every kind, including, without
         limitation, all domestic or foreign patents, patent applica-
         tions, inventions (whether or not patentable), processes, prod-
         ucts, technologies, discoveries, copyrightable and copyrighted
         works, apparatus, trade secrets, trademarks and trademark ap-
         plications and registrations, service marks and service mark
         applications and registrations, trade names, trade dress, copy-
         right registrations, design rights, customer lists, marketing
         and customer information, mask works rights, know-how, li-
         censes, technical information (whether confidential or other-
         wise), software, and all documentation thereof).  Other than
         the Intellectual Property set forth in Section 4.10 of the
         Pyxis Disclosure Schedule, no name, patent, invention, trade
         secret, proprietary right, computer software, trademark, trade
         name, service mark, logo, copyright, franchise, license, subli-
         cense, or other such right is necessary for the operation of
         the business of Pyxis in substantially the same manner as such
         business is presently or proposed to be conducted.  Except as
         set forth in Section 4.10 to the Pyxis Disclosure Schedule (i)
         Pyxis owns, free and clear of any liens, claims or encum-
         brances, the Intellectual Property and has the exclusive right
         to bring actions for the infringement thereof; (ii) all of the
         patents, trademark registrations, service mark registrations,
         and design right registrations, and copyright registrations
         included in the Intellectual Property are valid; (iii) the In-
         tellectual Property does not infringe and has not infringed any
         now existing or subsequently issued domestic or foreign patent,
         trademark, service mark, tradename, copyright, design right or
         other intellectual property or proprietary right; (iv) no per-
         son or entity has asserted that, with respect to the Intel-
         lectual Property, Pyxis or a licensee of Pyxis is infringing or
         has infringed any domestic or foreign patent, trademark, ser-
         vice mark, tradename, or copyright or design right, or has mis-
         appropriated or improperly used or disclosed any trade secret,
         confidential information or know-how; (v) Pyxis has no basis
         for any belief that any of the Intellectual Property, or its

                                       -20-<PAGE>







         use or operation, infringe, or have infringed, any foreign or
         domestic patent, trademark, service mark, tradename or copy-
         right of any entity or have involved the misappropriation or
         improper use or disclosure of any trade secrets, confidential
         information or know-how of any entity; (vi) all working re-
         quirements and all fees, annuities, and other payments which
         are due from Pyxis on or before the effective date of this
         Agreement for any of the Intellectual Property, including,
         without limitation, all foreign or domestic patents, patent
         applications, trademarks registrations, service mark registra-
         tions, copyright registrations and any applications for any of
         the preceding, have been met or paid; (vii) the claims made in
         the foreign or domestic patents and patent applications that
         are a part of the Intellectual Property are not dominated by
         claims of patents owned by other persons or entities; (viii)
         the making, using, selling, manufacturing, marketing, licens-
         ing, reproduction, distribution, or publishing of any process,
         machine, manufacture, composition of matter, or material pur-
         suant to any part of the Intellectual Property, does not and
         will not infringe any domestic or foreign patent, trademark,
         service mark, tradename, copyright or other intellectual prop-
         erty right; (ix) no unexpired foreign or domestic patents or
         patent applications exist that are adverse to the material in-
         terests of Pyxis; (x) the Intellectual Property is not the sub-
         ject of any pending Action; (xi) no part of the Intellectual
         Property was obtained through inequitable conduct or fraud in
         the United States Patent and Trademark Office or any foreign
         governmental entity; (xii) Pyxis is not aware of any (a) prior
         act that would adversely affect, void or invalidate any of the
         Intellectual Property or (b) conduct or use by Pyxis or any
         third party that would adversely affect, void or invalidate any
         of the Intellectual Property; (xiii) the execution, delivery
         and performance of this Agreement by Pyxis, and the consumma-
         tion of the transactions contemplated thereby, will not breach,
         violate or conflict with any instrument or agreement governing
         or contained within any of the Intellectual Property, will not
         cause the forfeiture or termination or give rise to a right of
         forfeiture or termination of any of the Intellectual Property
         or in any way impair the right of Cardinal or Subcorp to use,
         sell, license or dispose of, or to bring any action for the
         infringement of, any Intellectual Property; (xiv) there are no
         royalties, honoraria, fees or other payments payable to any
         third party by reason of the ownership, use, license, sale or
         disposition of the Intellectual Property; (xv) no part of the
         source or object code, algorithms or structure included in any
         of the Intellectual Property is copied from, based upon, or
         derived from any source or object code, algorithm or structure
         included in any computer software product owned by any third
         party nor does any substantial similarity of any of such source

                                       -21-<PAGE>







         or object code, algorithms or structure to any computer soft-
         ware product owned by any third party result from such source
         or object code, algorithms or structure being copied from,
         based upon or derived from any computer software product owned
         by any third party; and (xvi) no software included in the In-
         tellectual Property contains any "Self-Help Code," i.e., any
         back door, time bomb, drop dead device, or other software rou-
         tine designed to disable a computer program automatically with
         the passage of time or under the positive control of any unau-
         thorized person, or, to Pyxis's knowledge, any "Unauthorized
         Code," i.e., any virus, Trojan horse, worm, or other software
         routines or hardware components designed to permit unauthorized
         access, disable, erase, or otherwise harm software, hardware,
         or data or to perform any other such actions.

                   (b)  Pyxis has taken all steps that are reasonably
         necessary and appropriate to safeguard and maintain the secrecy
         and confidentiality of all trade secrets contained in the
         Intellectual Property (including, without limitation, entering
         into appropriate confidentiality, nondisclosure and non-
         competition agreements with all officers, directors, employees
         and third-party consultants of Pyxis.

                   (c)  Pyxis has taken all steps that are reasonably
         necessary and appropriate to safeguard and maintain all
         copyrights and patents contained in the Intellectual Property,
         including, without limitation, entering into appropriate
         assignments with all current and former officers, directors,
         employees and third party consultants of Pyxis.

                   4.11  Title to and Condition of Properties.  Pyxis
         owns or holds under valid leases all real property, plants,
         machinery and equipment necessary for the conduct of the busi-
         ness of Pyxis as presently conducted, except where the failure
         to own or hold such property, plants, machinery and equipment
         would not have a material adverse effect on Pyxis.  Section
         4.11 to the Pyxis Disclosure Schedule lists, and Pyxis has fur-
         nished or made available to Cardinal, copies of all third party
         environmental or other reports prepared by or for Pyxis with
         respect to the real property owned, leased or used by Pyxis.

                   4.12  Registration Statement.  None of the informa-
         tion provided by Pyxis for inclusion in the Registration State-
         ment at the time it becomes effective or, in the case of the
         Joint Proxy Statement, at the date of mailing, will contain any
         untrue statement of a material fact or omit to state a material
         fact required to be stated therein or necessary in order to
         make the statements therein, in light of the circumstances un-
         der which they were made, not misleading.  The Registration
         Statement and Joint Proxy Statement, except for such portions

                                       -22-<PAGE>







         thereof that relate only to Cardinal and its subsidiaries, will
         each comply as to form in all material respects with the provi-
         sions of the Securities Act and the Exchange Act.

                   4.13  Litigation.  Except as set forth in Section
         4.13 to the Pyxis Disclosure Schedule, there is no Action
         pending or, to the knowledge of Pyxis, threatened against Pyxis
         which, individually or in the aggregate, could reasonably be
         expected to have a material adverse effect on Pyxis or a
         material adverse effect on the ability of Pyxis to consummate
         the transactions contemplated hereby.  Pyxis is not subject to
         any outstanding order, writ, injunction or decree which,
         individually or in the aggregate, insofar as can be reasonably
         foreseen, could have a material adverse effect on Pyxis or a
         material adverse effect on the ability of Pyxis to consummate
         the transactions contemplated hereby.  Except as set forth in
         Section 4.13 to the Pyxis Disclosure Schedule, since December
         31, 1992, Pyxis has not been subject to any outstanding order,
         writ, injunction or decree relating to Pyxis's method of doing
         business or its relationship with past, existing or future
         lessees, users, purchasers or licensees of any Intellectual
         Property, goods or services of Pyxis.

                   4.14  Brokerage and Finder's Fees; Expenses.  Except
         for Pyxis's obligations to Donaldson, Lufkin & Jenrette Securi-
         ties Corporation ("DLJ") (a copy of the written agreement re-
         lating to such obligations having previously been provided to
         Cardinal), neither Pyxis nor any stockholder, director, officer
         or employee thereof, has incurred or will incur on behalf of
         Pyxis, any brokerage, finder's or similar fee in connection
         with the transactions contemplated by this Agreement.  Section
         4.14 to the Pyxis Disclosure Schedule discloses a bona fide
         estimate of the aggregate amount of all fees and expenses ex-
         pected to be paid by Pyxis to all attorneys, accountants and
         investment bankers in connection with the Merger ("Merger
         Fees").  

                   4.15  Accounting Matters.  Neither Pyxis nor any of
         its affiliates has taken or agreed to take any action that
         (without giving effect to any actions taken or agreed to be
         taken by Cardinal or any of its affiliates) would prevent
         Cardinal from accounting for the business combination to be ef-
         fected by the Merger as a pooling-of-interests for financial
         reporting purposes.  None of the transactions contemplated by
         this Agreement, including, without limitation, any transaction
         or agreement entered into pursuant to Section 5.3(e) or Section
         5.3(h) or otherwise permitted by Section 5.3(c) will prevent
         Cardinal from accounting for the business combination to be
         affected by the Merger as a pooling-of-interests for financial
         reporting purposes.

                                       -23-<PAGE>







                   4.16  Employee Benefit Plans.

                   (a)  For purposes of this Section 4.16, the following
         terms have the definitions given below:

                        "Controlled Group Liability" means any and all
                   liabilities under (i) Title IV of ERISA, (ii) section
                   302 of ERISA, (iii) sections 412 and 4971 of the
                   Code, (iv) the continuation coverage requirements of
                   section 601 et seq. of ERISA and section 4980B of the
                   Code, and (v) corresponding or similar provisions of
                   foreign laws or regulations, in each case other than
                   pursuant to the Plans.

                        "ERISA" means the Employee Retirement Income
                   Security Act of 1974, as amended, and the regulations
                   thereunder.

                        "ERISA Affiliate" means, with respect to any
                   entity, trade or business, any other entity, trade or
                   business that is a member of a group described in
                   Section 414(b), (c), (m) or (o) of the Code or Sec-
                   tion 4001(b)(1) of ERISA that includes the first en-
                   tity, trade or business, or that is a member of the
                   same "controlled group" as the first entity, trade or
                   business pursuant to Section 4001(a)(14) of ERISA.

                        "Plans" means all employee benefit plans, pro-
                   grams, policies, practices, and other arrangements
                   providing benefits to any employee or former employee
                   or beneficiary or dependent thereof, whether or not
                   written, and whether covering one person or more than
                   one person, sponsored or maintained by Pyxis or any
                   of its subsidiaries or to which Pyxis or any of its
                   subsidiaries contributes or is obligated to contrib-
                   ute.  Without limiting the generality of the forego-
                   ing, the term "Plans" includes all employee welfare
                   benefit plans within the meaning of Section 3(1) of
                   ERISA and all employee pension benefit plans within
                   the meaning of Section 3(2) of ERISA.

                   (b)  Section 4.16 to the Pyxis Disclosure Schedule
         lists all Plans.  With respect to each Plan, Pyxis has made
         available to Cardinal a true, correct and complete copy of:
         (i) each writing constituting a part of such Plan, including
         without limitation all plan documents, benefit schedules, trust
         agreements, and insurance contracts and other funding vehicles;
         (ii) the most recent Annual Report (Form 5500 Series) and ac-
         companying schedule, if any; (iii) the current summary plan

                                       -24-<PAGE>







         description, if any; (iv) the most recent annual financial re-
         port, if any; and (v) the most recent determination letter from
         the IRS, if any.

                   (c)  The Internal Revenue Service has issued a favor-
         able determination letter with respect to each Plan that is
         intended to be a "qualified plan" within the meaning of Section
         401(a) of the Code (a "Qualified Plan") and there are no exist-
         ing circumstances nor any events that have occurred that could
         adversely affect the qualified status of any Qualified Plan the
         related trust.

                   (d)  All contributions required to be made to any
         Plan by Applicable Laws or by any plan document or other con-
         tractual undertaking, and all premiums due or payable with re-
         spect to insurance policies funding any Plan, for any period
         through the date hereof have been timely made or paid in full
         and through the Closing Date will be timely made or paid in
         full or, to the extent not required to be made or paid on or
         before the date hereof or the Closing Date, as applicable, have
         been or will be fully reflected in the Pyxis SEC Documents
         filed or to be filed with the Commission.

                   (e)  Pyxis and its subsidiaries have complied, and
         are now in compliance, in all material respects, with all pro-
         visions of ERISA, the Code and all laws and regulations ap-
         plicable to the Plans.  There is not now, and there are no ex-
         isting, circumstances that could give rise to, any requirement
         for the posting of security with respect to a Plan or the impo-
         sition of any lien on the assets of Pyxis or any of its subsid-
         iaries under ERISA or the Code.

                   (f)  No Plan is subject to Title IV or Section 302 of
         ERISA or Section 412 or 4971 of the Code.  No Plan is a "multi-
         employer plan" within the meaning of Section 4001(a)(3) of
         ERISA (a "Multiemployer Plan") or a plan that has two or more
         contributing sponsors at least two of whom are not under common
         control, within the meaning of Section 4063 of ERISA (a "Mul-
         tiple Employer Plan"), nor has Pyxis or any of its subsidiaries
         or any of their respective ERISA Affiliates, at any time within
         five years before the date hereof, contributed to or been obli-
         gated to contribute to any Multiemployer Plan or Multiple Em-
         ployer Plan.

                   (g)  There does not now exist, and there are no ex-
         isting, circumstances that could result in, any Controlled
         Group Liability that would be a liability of Pyxis or any of
         its subsidiaries following the Closing.  Without limiting the

                                       -25-<PAGE>







         generality of the foregoing, neither Pyxis nor any of its sub-
         sidiaries nor any of their respective ERISA Affiliates has en-
         gaged in any transaction described in Section 4069 or Section
         4204 of ERISA.

                   (h)  Except for health continuation coverage as re-
         quired by Section 4980B of the Code or Part 6 of Title I of
         ERISA, neither Pyxis nor any of its subsidiaries has any li-
         ability for life, health, medical or other welfare benefits to
         former employees or beneficiaries or dependents thereof.

                   (i)  Except as set forth in Section 4.16(i) to the
         Pyxis Disclosure Schedule, neither the execution and delivery
         of this Agreement nor the consummation of the transactions con-
         templated hereby will result in, cause the accelerated vesting
         or delivery of, or increase the amount or value of, any payment
         or benefit to any employee of Pyxis or any of its subsidiaries.
         Without limiting the generality of the foregoing and except as
         set forth in Section 4.16(i) to the Pyxis Disclosure Schedule,
         no amount paid or payable by Pyxis or any of its subsidiaries
         in connection with the transactions contemplated hereby will be
         an "excess parachute payment" within the meaning of Section
         280G of the Code.

                   (j)  There are no pending or threatened claims (other
         than claims for benefits in the ordinary course), lawsuits or
         arbitrations which have been asserted or instituted against the
         Employee Plans, any fiduciaries thereof with respect to their
         duties to the Employee Plans or the assets of any of the trusts
         under any of the Employee Plans which could reasonably be ex-
         pected to result in any material liability of Pyxis or any of
         its subsidiaries to the Pension Benefit Guaranty Corporation,
         the Department of Treasury, the Department of Labor or any mul-
         tiemployer plan.

                   (k)  Section 4.16(k) to the Pyxis Disclosure Schedule
         sets forth the names of all directors and officers of Pyxis,
         the total salary, bonus, fringe benefits and perquisites each
         received in the fiscal year ended December 31, 1995, and any
         changes to the foregoing which have occurred subsequent to De-
         cember 31, 1995; Section 4.16(k) to the Pyxis Disclosure
         Schedule also lists and describes the current compensation of
         any other employee of Pyxis whose total current salary and max-
         imum bonus opportunity exceeds $100,000 annually.  Except as
         disclosed in Section 4.16(k) to the Pyxis Disclosure Schedule
         or in Pyxis's 1994 Proxy Statement, there are no other material
         forms of compensation paid to any such director, officer or
         employee of Pyxis.  Except as set forth in Section 4.16(k) to

                                       -26-<PAGE>







         the Pyxis Disclosure Schedule, no officer, director, or em-
         ployee of Pyxis or any other affiliate of Pyxis, or any immedi-
         ate family member of any of the foregoing, provides or causes
         to be provided to Pyxis any material assets, services or fa-
         cilities and Pyxis does not provide or cause to be provided to
         any such officer, director, employee or affiliate, or any im-
         mediate family member of any of the foregoing, any material
         assets, services or facilities. 

                   4.17  Contracts.  Section 4.17 to the Pyxis Disclo-
         sure Schedule lists all written or oral contracts, agreements,
         guarantees, leases and executory commitments (each a "Con-
         tract") to which Pyxis is a party and which fall within any of
         the following categories: (a) Contracts not entered into in the
         ordinary course of Pyxis's business, (b) joint venture, part-
         nership and like agreements, (c) Contracts which are service
         contracts (excluding contracts for delivery services entered
         into in the ordinary course of business) or equipment leases
         involving payments by Pyxis of more than $200,000 per year, (d)
         Contracts containing covenants purporting to limit the freedom
         of Pyxis to compete in any line of business in any geographic
         area or to hire any individual or group of individuals, (e)
         Contracts which after the Effective Time would have the effect
         of limiting the freedom of Cardinal or its subsidiaries (other
         than Pyxis and its subsidiaries) to compete in any line of bus-
         iness in any geographic area or to hire any individual or group
         of individuals, (f) Contracts which contain minimum purchase
         conditions or requirements or other terms that restrict or
         limit the purchasing relationships of Pyxis or any lessee
         thereof, (g) Contracts relating to any outstanding commitment
         for capital expenditures in excess of $100,000, (h) Contracts
         relating to the lease or sublease of or sale or purchase of
         real or personal property involving any annual expense or price
         in excess of $100,000 and not cancellable by Pyxis (without
         premium or penalty) within one month, (i) Contracts with any
         labor organization, (j) indentures, mortgages, promissory
         notes, loan agreements, guarantees of amounts in excess of
         $100,000, letters of credit or other agreements or instruments
         of Pyxis or commitments for the borrowing or the lending of
         amounts in excess of $100,000 or by Pyxis or providing for the
         creation of any charge, security interest, encumbrance or lien
         upon any of the assets of Pyxis, (k) Contracts involving annual
         revenues or expenditures to the business of Pyxis in excess of
         2.0% of Pyxis's annual revenues (other than lease agreements
         with customers) and (l) Contracts with or for the benefit of
         any affiliate of Pyxis or immediate family member thereof
         (other than subsidiaries of Pyxis).  All such Contracts are
         valid and binding obligations of Pyxis and, to the knowledge of
         Pyxis, the valid and binding obligation of each other party
         thereto except such Contracts which if not so valid and binding

                                       -27-<PAGE>







         would not, individually or in the aggregate, have a material
         adverse effect on Pyxis.  Neither Pyxis nor, to the knowledge
         of Pyxis, any other party thereto is in violation of or in de-
         fault in respect of, nor has there occurred an event or condi-
         tion which with the passage of time or giving of notice (or
         both) would constitute a default under, any such Contract ex-
         cept such violations or defaults under such Contracts which,
         individually or in the aggregate, would not have a material
         adverse effect on Pyxis.

                   4.18  Accounts Receivable.  All accounts and notes
         receivable (including lease and finance notes receivable) and
         accrued interest receivable of Pyxis have arisen in the ordi-
         nary course of business and the accounts receivable reserves
         reflected on the balance sheet as of September 30, 1995 in-
         cluded in the Pyxis SEC Documents are as of such date estab-
         lished in accordance with generally accepted accounting prin-
         ciples consistently applied and to the best knowledge of Pyxis
         will be collectible in an amount not less than the amounts
         thereof carried on the balance sheet as of such date included
         in the Pyxis SEC Documents, net of any reserves included
         thereon, as applicable, except for any uncollectable amount
         which, individually or in the aggregate, would not have a mate-
         rial adverse effect on Pyxis.  

                   4.19  Labor Relations.  There is no unfair labor
         practice complaint against Pyxis pending before the NLRB and
         there is no labor strike, dispute, slowdown or stoppage, or any
         union organizing campaign, actually pending or, to the knowl-
         edge of Pyxis, threatened against or involving Pyxis.

                   4.20  Undisclosed Liabilities.  Except (i) as and to
         the extent disclosed or reserved against on the balance sheet
         of Pyxis as of September 30, 1995 included in the Pyxis SEC
         Documents, (ii) as incurred after the date thereof in the ordi-
         nary course of business consistent with prior practice and not
         prohibited by this Agreement or (iii) as set forth in Section
         4.20 to the Pyxis Disclosure Schedule, Pyxis does not have any
         liabilities or obligations of any nature, whether known or un-
         known, absolute, accrued, contingent or otherwise and whether
         due or to become due, that, individually or in the aggregate,
         have or could reasonably be expected to have a material adverse
         effect on Pyxis.  

                   4.21  Operation of Pyxis's Business; Relationships.
         (a)  Since September 30, 1995 through the date of this Agree-
         ment, Pyxis has not engaged in any transaction which, if done
         after execution of this Agreement, would violate Section 5.3(c)
         hereof except as described or reflected in the Pyxis SEC Docu-
         ments or as set forth in Section 4.21 to the Pyxis Disclosure

                                       -28-<PAGE>







         Schedule.  Section 4.21 to the Pyxis Disclosure Schedule de-
         scribes each termination or nonrenewal that has occurred with
         respect to any Contract with any lessee or licensee of Intel-
         lectual Property, from December 31, 1994 to the date hereof.  

                   (b)  The relationships of Pyxis with its customers
         and suppliers are satisfactory and the execution of this Agree-
         ment, the Merger and the transactions contemplated hereby will
         not materially adversely affect the relationships of Pyxis with
         such customers or suppliers.  

                   (c)  No product produced by Pyxis or produced for
         Pyxis by a third party and bearing an Pyxis trademark or other
         Proprietary Right of Pyxis, has been recalled voluntarily or
         involuntarily since December 31, 1992, no such recall is being
         considered by Pyxis, and, to the knowledge of Pyxis, no such
         recall is being considered by or has been requested or ordered
         by any Governmental Authority or consumer group.  

                   4.22  Permits; Compliance.  Pyxis is in possession of
         all franchises, grants, authorizations, licenses, permits,
         easements, variances, exemptions, consents, certificates, ap-
         provals and orders necessary to own, lease and operate its
         properties and to carry on its business as it is now being con-
         ducted other than those which are immaterial (collectively, the
         "Pyxis Permits"), and there is no Action pending or, to the
         knowledge of Pyxis, threatened regarding suspension or cancel-
         lation of any of the Pyxis Permits, except for any such Action
         which, if determined adversely, could not reasonably be ex-
         pected, individually or in the aggregate, to have a material
         adverse effect on Pyxis.  Pyxis is not in conflict with, or in
         default or violation of, any of the Pyxis Permits, except for
         any such conflicts, defaults or violations which, individually
         or in the aggregate, could not reasonably be expected to have a
         material adverse effect on Pyxis.  During the period commencing
         on December 31, 1992 and ending on the date hereof, Pyxis has
         not received any notification with respect to possible con-
         flicts, defaults or violations of Applicable Laws, except for
         notices relating to possible conflicts, defaults or violations,
         which conflicts, defaults or violations could not reasonably be
         expected to have a material adverse effect on Pyxis.

                   4.23  Product Warranties and Liabilities.  Except as
         listed in Section 4.23 to the Pyxis Disclosure Schedule, Pyxis
         has no forms of warranties or guarantees of its products and
         services that are in effect or proposed to be used by it.  Sec-
         tion 4.23 to the Pyxis Disclosure Schedule sets forth a de-
         scription of each pending or, to the knowledge of Pyxis,
         threatened material Action under any warranty or guaranty
         against Pyxis.  Pyxis has not incurred, nor does Pyxis know or

                                       -29-<PAGE>







         have any reason to believe there is any basis for alleging, any
         material liability, damage, loss, cost or expense as a result
         of any material defect or other deficiency (whether of design,
         materials, workmanship, labeling instructions or otherwise)
         ("Product Liability") with respect to any product sold or
         services rendered by or on behalf of Pyxis (including any les-
         see thereof) prior to the Effective Time, whether such Product
         Liability is incurred by reason of any express or implied war-
         ranty (including, without limitation, any warranty of merchant-
         ability or fitness), any doctrine of common law (tort, contract
         or other), any statutory provision or otherwise and irrespec-
         tive of whether such Product Liability is covered by insurance.

                   4.24  Environmental Matters.

                   (a)  As used herein, the term "Environmental Laws"
         means all federal, state, local or foreign laws relating to
         pollution or protection of human health or the environment (in-
         cluding, without limitation, ambient air, surface water,
         groundwater, land surface or subsurface strata), including,
         without limitation, laws relating to emissions, discharges,
         releases or threatened releases of chemicals, pollutants, con-
         taminants, or industrial, toxic or hazardous substances or
         wastes (collectively, "Hazardous Materials") into the environ-
         ment, or otherwise relating to the manufacture, processing,
         distribution, use, treatment, storage, disposal, transport or
         handling of Hazardous Materials, as well as all authorizations,
         codes, decrees, demands or demand letters, injunctions, judg-
         ments, licenses, notices or notice letters, orders, permits,
         plans or regulations issued, entered, promulgated or approved
         thereunder.

                   (b)  There are, with respect to Pyxis, its subsidiar-
         ies or any predecessor of the foregoing, no past or present
         material violations of Environmental Laws, releases of any ma-
         terial into the environment, actions, activities, circum-
         stances, conditions, events, incidents, or contractual obliga-
         tions which may give rise to any common law environmental li-
         ability or any liability under the Comprehensive Environmental
         Response, Compensation and Liability Act of 1980 or similar
         federal, state, local or foreign laws and none of Pyxis and its
         subsidiaries has received any notice with respect to any of the
         foregoing, nor is any Action pending or threatened in connec-
         tion with any of the foregoing.

                   (c)  No Hazardous Materials are contained on or about
         any real property currently owned, leased or used by Pyxis or
         any of its subsidiaries and no Hazardous Materials were re-
         leased on or about any real property previously owned, leased
         or used by Pyxis during the period the property was owned,

                                       -30-<PAGE>







         leased or used by Pyxis, except in the normal course of Pyxis's
         business.

                   (d)  There are no underground storage tanks on or
         under any real property currently or previously owned, leased
         or used by Pyxis or any of its subsidiaries.  

                   4.25  Opinion of Financial Advisor.  Pyxis has re-
         ceived the written opinion of DLJ, its financial advisor, to
         the effect that, as of February 6, 1996, the Exchange Ratio is
         fair to the Pyxis Stockholders from a financial point of view,
         Pyxis has heretofore provided a copy of such opinion to
         Cardinal and such opinion has not been withdrawn, revoked or
         modified.

                   4.26  Board Recommendation.  The Board of Directors
         of Pyxis, at a meeting duly called and held, has by unanimous
         vote of those directors present (who constituted 100% of the
         directors then in office) (i) determined that this Agreement
         and the transactions contemplated hereby, including the Merger,
         and the Stock Option Agreement and the transactions contem-
         plated thereby, taken together, are fair to and in the best
         interests of the stockholders of Pyxis, and (ii) resolved to
         recommend that the holders of the shares of Pyxis Common Stock
         approve this Agreement and the transactions contemplated
         herein, including the Merger.

                   4.27  DGCL Section 203 and State Takeover Laws.
         Prior to the date hereof, the Board of Directors of Pyxis has
         taken all action necessary to exempt under or make not subject
         to (x) Section 203 of the DGCL and (y) any other state takeover
         law or state law that purports to limit or restrict business
         combinations or the ability to acquire or vote shares:  (i) the
         execution of this Agreement, the Stock Option Agreement dated
         February 7, 1996 between Cardinal and Pyxis (the "Stock Option
         Agreement"), the Support/Voting Agreements dated as of February
         7, 1996 between Cardinal and certain Pyxis Stockholders (col-
         lectively, the "Support Agreements"), (ii) the Merger and (iii)
         the transactions contemplated hereby and by the Stock Option
         Agreement and the Support Agreements.

                   4.28  Lease Arrangements.

                   (a)  Except as set forth in Section 4.28 to the Pyxis
         Disclosure Schedule, there are no lessees ("Master Lessees")
         who have been granted the right to use, purchase, lease or li-
         cense Intellectual Property, goods or services from Pyxis and
         to provide, resell, sublease or relicense same to other autho-
         rized lessees or third parties.  The identity of each Master
         Lessee and a description of all lessees and third parties to

                                       -31-<PAGE>







         whom such Master Lessee is entitled to provide, resell, sub-
         lease or relicense Intellectual Property, goods and services of
         Pyxis are set forth in Section 4.28 to the Pyxis Disclosure
         Schedule.  There are no agreements between Pyxis and any Master
         Lessee other than those in writing that are set forth in Sec-
         tion 4.28 to the Pyxis Disclosure Schedule.

                   (b)  The relationships of Pyxis with its lessees are
         satisfactory, and to the best knowledge of Pyxis the execution
         of this Agreement, the consummation of the Merger, and the
         consummation of the transactions contemplated thereby will not
         materially adversely affect the relationships of Pyxis with
         such lessees. 

                   (c)  All property (personal or other) that is subject
         to any "Rental Agreement" (as defined in the Vendor Program
         Agreement, dated as of October 10, 1991, between General Elec-
         tric Capital Corporation ("GE Capital") and Pyxis (together
         with all riders, supplements and amendments thereto, the "Fi-
         nancing Agreement")) sold and/or assigned to GE Capital under
         the Financing Agreement (or any other similar type of agree-
         ment) shall, upon expiration of the term of such Rental Agree-
         ment, be owned by Pyxis free and clear of any liens, security
         interests, encumbrances and restrictions of any kind. 

                   4.29  [Intentionally Omitted]

                   4.30  Pyxis Rights Agreement.  The Rights Agreement
         dated as of August 5, 1994, between Pyxis and First Interstate
         Bank (the "Rights Agreement"), has been amended, and will re-
         main amended (and no replacement plan will be adopted), so as
         to provide that none of Cardinal and its affiliates will become
         an "Acquiring Person" and that no "Stock Acquisition Date" or
         "Distribution Date" (as such terms are defined in the Rights
         Agreement) will occur as a result of the execution of this
         Agreement or the Stock Option Agreement or the consummation of
         the Merger pursuant to this Agreement or the acquisition or
         transfer of shares of Pyxis Common Stock by Cardinal pursuant
         to the Stock Option Agreement.


                                    ARTICLE V

                             COVENANTS OF THE PARTIES

                   The parties hereto agree as follows with respect to
         the period from and after the execution of this Agreement.

                                       -32-<PAGE>







                   5.1  Mutual Covenants.

                   (a)  General.  Each of the parties shall use its rea-
         sonable efforts to take all action and to do all things neces-
         sary, proper or advisable to consummate the Merger and the
         transactions contemplated by this Agreement (including, without
         limitation, using its reasonable efforts to cause the condi-
         tions set forth in Article VI for which they are responsible to
         be satisfied as soon as reasonably practicable and to prepare,
         execute and deliver such further instruments and take or cause
         to be taken such other and further action as any other party
         hereto shall reasonably request).

                   (b)  HSR Act.  As soon as practicable, and in any
         event no later than ten (10) business days after the date here-
         of, each of the parties hereto will file any Notification and
         Report Forms and related material required to be filed by it
         with the Federal Trade Commission and the Antitrust Division of
         the United States Department of Justice under the HSR Act with
         respect to the Merger, will use its reasonable efforts to ob-
         tain an early termination of the applicable waiting period, and
         shall promptly make any further filings pursuant thereto that
         may be necessary, proper or advisable; provided, however, that
         neither Cardinal nor any of its subsidiaries shall be required
         hereunder to divest or hold separate any portion of their busi-
         ness or assets.  

                   (c)  Other Governmental Matters.  Each of the parties
         shall use its reasonable efforts to take any additional action
         that may be necessary, proper or advisable in connection with
         any other notices to, filings with, and authorizations, con-
         sents and approvals of any Governmental Authority that it may
         be required to give, make or obtain.

                   (d)  Pooling-of-Interests.  Each of the parties shall
         use its best efforts to cause the Merger to qualify for
         pooling-of-interests accounting treatment for financial report-
         ing purposes. 

                   (e)  Tax-Free Treatment.  Each of the parties shall
         use its best efforts to cause the Merger to constitute a tax-
         free "reorganization" under Section 368(a) of the Code and to
         permit Pillsbury Madison & Sutro LLP to issue its opinion pro-
         vided for in Section 6.1(f).

                   (f)  Public Announcements.  Unless otherwise required
         by Applicable Laws or requirements of the National Association
         of Securities Dealers or the NYSE (and in that event only if
         time does not permit), at all times prior to the earlier of the
         Effective Time or termination of this Agreement pursuant to

                                       -33-<PAGE>







         Section 7.1, Cardinal and Pyxis shall consult with each other
         before issuing any press release with respect to the Merger and
         shall not issue any such press release prior to such consulta-
         tion.

                   (g)  Access.  From and after the date of this Agree-
         ment until the Effective Time (or the termination of this
         Agreement), Cardinal and Pyxis shall permit representatives of
         the other to have appropriate access at all reasonable times to
         the other's premises, properties, books, records, contracts,
         tax records, documents, customers and suppliers.  Information
         obtained by Cardinal and Pyxis pursuant to this Section 5.1(g)
         shall be subject to the provisions of the confidentiality
         agreement between them dated November 30, 1995 (the "Confiden-
         tiality Agreement"), which agreement remains in full force and
         effect.

                   (h)  Directors' and Officers' Insurance.  Cardinal
         and Pyxis shall collaborate in good faith to use their
         respective efforts to cause the Surviving Corporation to obtain
         and maintain in effect after the Effective Time policies of
         directors' and officers' liability insurance at no cost to the
         beneficiaries thereof with respect to acts or omissions
         occurring prior to the Effective Time with substantially the
         same coverage and containing substantially similar terms and
         conditions as existing policies; provided, however, that the
         Surviving Corporation shall not be required to pay an aggregate
         premium for such insurance coverage in excess of the amount set
         forth in Section 5.1(h) to the Pyxis Disclosure Schedule, but
         in any event shall purchase as much coverage as possible for
         such amount on terms reasonably acceptable to Pyxis.

                   5.2  Covenants of Cardinal.

                   (a)  Cardinal Shareholders Meeting.  Cardinal shall
         take all action in accordance with the federal securities laws,
         the Ohio Revised Code and the Cardinal Articles and Code of
         Regulations, as amended and restated, necessary to obtain the
         consent and approval of Cardinal Shareholders with respect to
         the authorization of the issuance of Cardinal Common Shares in
         the Merger and the transactions contemplated hereby.

                   (b)  Preparation of Joint Proxy Statement.  Cardinal
         shall, as soon as is reasonably practicable, prepare and file
         the Joint Proxy Statement with the Commission on a confidential
         basis.  Cardinal shall prepare and file the Registration State-
         ment with the Commission as soon as is reasonably practicable
         following clearance of the Joint Proxy Statement by the Commis-
         sion and shall use all reasonable efforts to have the Registra-
         tion Statement declared effective by the Commission as promptly

                                       -34-<PAGE>







         as practicable and to maintain the effectiveness of the Regis-
         tration Statement through the Effective Time.  Cardinal shall
         use all reasonable efforts to mail at the earliest practicable
         date to Cardinal Shareholders the Joint Proxy Statement, which
         shall include all information required under Applicable Law to
         be furnished to Cardinal Shareholders in connection with the
         Merger and the transactions contemplated thereby.  Cardinal
         also shall take such other reasonable actions (other than
         qualifying to do business in any jurisdiction in which it is
         not so qualified) required to be taken under any applicable
         state securities laws in connection with the issuance of
         Cardinal Common Shares in the Merger.  

                   (c)  Conduct of Cardinal's Operations.  During the
         period from the date of this Agreement to the Effective Time,
         Cardinal shall use its reasonable efforts to maintain and pre-
         serve its business organization and to retain the services of
         its officers and key employees and maintain relationships with
         customers, suppliers and other third parties to the end that
         their goodwill and ongoing business shall not be impaired in
         any material respect.  

                   (d)  Indemnification.  From and after the Effective
         Time, Cardinal shall cause the Surviving Corporation
         (including, to the extent required, providing sufficient
         funding) to (i) indemnify and hold harmless the present and
         former officers and directors of Pyxis in respect of acts or
         omissions occurring prior to the Effective Time to the extent
         provided under the Pyxis Certificate of Incorporation, as
         amended and restated, and Bylaws in effect on the date hereof
         and (ii) perform and fulfill all of its obligations under the
         Indemnification Agreements between Pyxis and the persons listed
         in Section 5.2(d) of the Pyxis Disclosure Schedule and in
         effect as of the date hereof.

                   (e)  Employee Benefits.  Cardinal covenants and
         agrees that, for a period of one year from and after the Ef-
         fective Time, it will cause the Surviving Corporation to pro-
         vide for the benefit of employees of the Surviving Corporation
         benefits that are no less favorable, in the aggregate, as those
         provided to employees of Pyxis immediately prior to the date of
         this Agreement.

                   (f)  Notification of Certain Matters.  Cardinal shall
         give prompt notice to Pyxis of (i) the occurrence or non-
         occurrence of any event the occurrence or non-occurrence of
         which would cause any Cardinal or Subcorp representation or
         warranty contained in this Agreement to be untrue or inaccurate
         at or prior to the Effective Time and (ii) any material failure
         of Cardinal to comply with or satisfy any covenant, condition

                                       -35-<PAGE>







         or agreement to be complied with or satisfied by it hereunder;
         provided, however, that the delivery of any notice pursuant to
         this Section 5.2(f) shall not limit or otherwise affect the
         remedies available hereunder to Pyxis.

                   5.3  Covenants of Pyxis.

                   (a)  Pyxis Stockholders Meeting.  Pyxis shall take
         all action in accordance with the federal securities laws, the
         DGCL and its Certificate of Incorporation, as amended and re-
         stated, and Bylaws necessary to obtain the consent and approval
         of Pyxis Stockholders with respect to the Merger, this Agree-
         ment and the transactions contemplated hereby.

                   (b)  Information for the Registration Statement and
         Preparation of Joint Proxy Statement.  Pyxis shall promptly
         furnish Cardinal with all information concerning it as may be
         required for inclusion in the Registration Statement.  Pyxis
         shall cooperate with Cardinal in the preparation of the Regis-
         tration Statement in a timely fashion and shall use all reason-
         able efforts to assist Cardinal in having the Registration
         Statement declared effective by the Commission as promptly as
         practicable.  If at any time prior to the Effective Time, any
         information pertaining to Pyxis contained in or omitted from
         the Registration Statement makes such statements contained in
         the Registration Statement false or misleading, Pyxis shall
         promptly so inform Cardinal and provide Cardinal with the
         information necessary to make statements contained therein not
         false and misleading.  Pyxis shall use all reasonable efforts
         to cooperate with Cardinal in the preparation and filing of the
         Joint Proxy Statement with the Commission on a confidential
         basis.  Pyxis shall use all reasonable efforts to mail at the
         earliest practicable date to Pyxis Stockholders the Joint Proxy
         Statement, which shall include all information required under
         Applicable Law to be furnished to Pyxis Stockholders in connec-
         tion with the Merger and the transactions contemplated thereby
         and shall include the recommendation of Pyxis's Board of Direc-
         tors in favor of the Merger unless the Pyxis Board of Directors
         concludes in good faith on the basis of the advice of its out-
         side counsel that the failure to withdraw such recommendation
         would violate the fiduciary obligations of the Board of Direc-
         tors under Applicable Law.

                   (c)  Conduct of Pyxis's Operations.  During the pe-
         riod from the date of this Agreement to the Effective Time,
         Pyxis shall conduct its operations in the ordinary course ex-
         cept as expressly contemplated by this Agreement and the trans-
         actions contemplated hereby and shall use its reasonable ef-
         forts to maintain and preserve its business organization and
         its material rights and franchises and to retain the services

                                       -36-<PAGE>







         of its officers and key employees and maintain relationships
         with customers, suppliers, lessees, Master Lessees, licensees
         and other third parties to the end that their goodwill and on-
         going business shall not be impaired in any material respect.
         Without limiting the generality of the foregoing, during the
         period from the date of this Agreement to the Effective Time,
         Pyxis shall not, except as otherwise expressly contemplated by
         this Agreement and the transactions contemplated hereby or as
         set forth in Section 5.3(c) to the Pyxis Disclosure Schedule,
         without the prior written consent of Cardinal:

                   (i)  do or effect any of the following actions with
              respect to its securities:  (A) adjust, split, combine or
              reclassify its capital stock, (B) make, declare or pay any
              dividend or distribution on, or directly or indirectly
              redeem, purchase or otherwise acquire, any shares of its
              capital stock or any securities or obligations convertible
              into or exchangeable for any shares of its capital stock,
              (C) grant any person any right or option to acquire any
              shares of its capital stock, (D) issue, deliver or sell or
              agree to issue, deliver or sell any additional shares of
              its capital stock or any securities or obligations con-
              vertible into or exchangeable or exercisable for any
              shares of its capital stock or such securities (except
              pursuant to the exercise of outstanding options to pur-
              chase Pyxis Common Stock), or (E) enter into any agree-
              ment, understanding or arrangement with respect to the
              sale or voting of its capital stock;

                  (ii)  except to the extent set forth in Section 5.3(c)
              of the Pyxis Disclosure Schedule, sell, transfer, lease,
              pledge, mortgage, encumber or otherwise dispose of any of
              its property or assets other than sales or leases of in-
              ventory or licensing of Intellectual Property made in the
              ordinary course of business;

                 (iii)  make or propose any changes in its Certificate
              of Incorporation, as amended and restated, or Bylaws;

                  (iv)  merge or consolidate with any other person or
              acquire a material amount of assets or capital stock of
              any other person or, except to the extent permitted under
              Section 5.3(e), enter into any confidentiality agreement
              with any person;

                   (v)  incur, create, assume or otherwise become liable
              for indebtedness in excess of $25,000 for borrowed money
              or assume, guarantee, endorse or otherwise as an accom-
              modation become responsible or liable for obligations in

                                       -37-<PAGE>







              excess of $25,000 of any other individual, corporation or
              other entity;

                  (vi)  create any subsidiaries;

                 (vii)  enter into or modify any employment, severance,
              termination or similar agreements or arrangements with, or
              grant any bonuses, salary increases, severance or termina-
              tion pay to, any officer, director, consultant or employee
              other than salary increases granted in the ordinary course
              of business consistent with past practice to employees who
              are not officers or directors of Pyxis, or otherwise in-
              crease the compensation or benefits provided to any of-
              ficer, director, consultant or employee except as may be
              required by Applicable Law or a binding written contract
              in effect on the date of this Agreement;

                (viii)  change its method of doing business or change
              any method or principle of accounting in a manner that is
              inconsistent with past practice;

                  (ix)  settle any Actions, whether now pending or here-
              after made or brought involving an amount in excess of
              $50,000;

                   (x)  modify, amend or terminate, or waive, release or
              assign any material rights or claims with respect to, any
              Contract set forth in Section 4.17 to the Pyxis Disclosure
              Schedule, any other material Contract to which Pyxis is a
              party or any confidentiality agreement to which Pyxis is a
              party;

                  (xi)  incur or commit to any capital expenditures,
              obligations or liabilities in respect thereof which in the
              aggregate exceed or would exceed $100,000;

                 (xii)  make any payments in respect of policies of di-
              rectors' and officers' liability insurance (premiums or
              otherwise) other than premiums paid in respect of its cur-
              rent policies on a month-to-month basis not in excess of
              one-twelfth of the amount set forth in Section 5.1(h) to
              the Pyxis Disclosure Schedule;

                (xiii)  make any material changes or modifications to
              any pricing policy (including lease rates and related dis-
              counts or fees) or investment policy or enter into any new
              leases or Master Lessee relationship on terms different
              from those in effect in the ordinary and usual course of
              business, consistent with past practice;

                                       -38-<PAGE>







                 (xiv)  pay (or agree to become obligated to pay) any
              Merger Fees in excess of the amount set forth in Section
              4.14 to the Pyxis Disclosure Schedule, other than any ex-
              cess amounts which are immaterial in the aggregate in-
              curred in connection with and in furtherance of consumma-
              tion of the transactions contemplated hereby;

                  (xv)  take any action to exempt or make not subject to
              (x) Section 203 of the DGCL or (y) any other state take-
              over law or state law that purports to limit or restrict
              business combinations or the ability to acquire or vote
              shares, any person or entity (other than Cardinal or its
              subsidiaries) or any action taken thereby, which person,
              entity or action would have otherwise been subject to the
              restrictive provisions thereof and not exempt therefrom,
              in each case, unless the Pyxis Board of Directors con-
              cludes in good faith on the basis of the advice of its
              outside counsel, that the failure to take such action
              would violate the fiduciary obligations of the Board of
              Directors under Applicable Law;

                 (xvi)  take any action that could result in the repre-
              sentations and warranties set forth in Section 4.30 becom-
              ing false or inaccurate, or, unless the Pyxis Board of
              Directors concludes in good faith on the basis of the ad-
              vice of its outside counsel, that the failure to take such
              action would violate the fiduciary obligations of the
              Board of Directors under Applicable Law, to otherwise ter-
              minate, amend, modify or make inapplicable as to any per-
              son or entity, or exempt any person from or take any ac-
              tion that would qualify any tender or exchange offer as a
              "Permitted Offer" under, the Rights Agreement or redeem
              the rights issued thereunder; 

                (xvii)  enter into or carry out any other transaction
              other than in the ordinary and usual course of business; 

               (xviii)  permit or cause any subsidiary to do any of the
              foregoing or agree or commit to do any of the foregoing;
              or

                 (xix)  agree in writing or otherwise to take any of the
              foregoing actions.

                   (d)  Intellectual Property Matters.  Pyxis shall use
         its best efforts to preserve its ownership rights to the Intel-
         lectual Property free and clear of any liens, claims or encum-
         brances and shall use its best efforts to assert, contest and
         prosecute any infringement of any issued foreign or domestic
         patent, trademark, service mark, tradename or copyright that

                                       -39-<PAGE>







         forms a part of the Intellectual Property or any misappropria-
         tion or disclosure of any trade secret, confidential informa-
         tion or know-how that forms a part of the Intellectual Prop-
         erty.

                   (e)  No Solicitation.  Pyxis agrees that, during the
         term of this Agreement, it shall not, and shall not authorize
         or permit any of its subsidiaries or any of its or its subsid-
         iaries' directors, officers, employees, agents or representa-
         tives, directly or indirectly, to solicit, initiate, encourage
         or facilitate, or furnish or disclose non-public information in
         furtherance of, any inquiries or the making of any proposal
         with respect to any recapitalization, merger, consolidation or
         other business combination involving Pyxis, or acquisition of
         any capital stock (other than upon exercise of outstanding
         Pyxis Options) or any material portion of the assets (except
         for acquisition of assets in the ordinary course of business
         consistent with past practice) of Pyxis, or any combination of
         the foregoing (a "Competing Transaction"), or negotiate, ex-
         plore or otherwise engage in discussions with any person (other
         than Cardinal, Subcorp or their respective directors, officers,
         employees, agents and representatives) with respect to any Com-
         peting Transaction or enter into any agreement, arrangement or
         understanding requiring it to abandon, terminate or fail to
         consummate the Merger or any other transactions contemplated by
         this Agreement; provided that Pyxis may furnish information to,
         and negotiate or otherwise engage in discussions with, any
         party who delivers a written proposal for a Competing Trans-
         action if and so long as the Board or Directors of Pyxis deter-
         mines in good faith by a majority vote, based upon advice of
         its outside legal counsel, that failing to take such action
         would constitute a breach of the fiduciary duties of the Board
         and such a proposal is, based upon advice of DLJ (or any other
         nationally recognized investment banking firm), more favorable
         to Pyxis's Stockholders in the aggregate and from a financial
         point of view than the transactions contemplated by this
         Agreement (including any adjustment to the terms and conditions
         of such transactions proposed by Cardinal in response to such
         Competing Transaction), and in such case the Board of Directors
         of Pyxis may withdraw its recommendation of this Agreement or
         the Merger (provided that the foregoing shall in no way limit
         or otherwise affect Cardinal's right to terminate this
         Agreement pursuant to Section 7.1(e)).  Pyxis will immediately
         cease all existing activities, discussions and negotiations
         with any parties conducted heretofore with respect to any of
         the foregoing.  From and after the execution of this Agreement,
         Pyxis shall promptly advise Cardinal in writing of the receipt,
         directly or indirectly, of any inquiries, discussions,
         negotiations, or proposals relating to a Competing Transaction
         (including the specific terms thereof) and promptly furnish to

                                       -40-<PAGE>







         Cardinal a copy of any such proposal or inquiry in addition to
         any information provided to or by any third party relating
         thereto.

                   (f)  Affiliates of Pyxis.  Pyxis shall cause each
         such person who may be at the Effective Time or was on the date
         hereof an "affiliate" of Pyxis for purposes of Rule 145 under
         the Securities Act, to execute and deliver to Cardinal no less
         than 35 days prior to the date of the meeting of Pyxis Stock-
         holders to approve the Merger, the written undertakings in the
         form attached hereto as Exhibit A.  On or prior to such date,
         Pyxis, with the advice of outside counsel, shall provide
         Cardinal with a letter (reasonably satisfactory to counsel to
         Cardinal) specifying all of the persons or entities who, may be
         deemed to be "affiliates" of Pyxis under the preceding sen-
         tence.

                   (g)  Notification of Certain Matters.  Pyxis shall
         give prompt notice to Cardinal of (i) the occurrence or non-
         occurrence of any event the occurrence or non-occurrence of
         which would cause any Pyxis representation or warranty con-
         tained in this Agreement to be untrue or inaccurate at or prior
         to the Effective Time and (ii) any material failure of Pyxis to
         comply with or satisfy any covenant, condition or agreement to
         be complied with or satisfied by it hereunder; provided, how-
         ever, that the delivery of any notice pursuant to this Section
         5.3(g) shall not limit or otherwise affect the remedies avail-
         able hereunder to Cardinal.

                   (h)  Employment Agreements.  Pyxis shall use its
         reasonable best efforts to cause each employee of Pyxis set
         forth in Section 5.3(h) to the Pyxis Disclosure Schedule to
         enter into an employment agreement with Pyxis substantially in
         the form attached to Section 5.3(h) to the Pyxis Disclosure
         Schedule.


                                    ARTICLE VI

                                    CONDITIONS

                   6.1  Mutual Conditions.  The obligations of the par-
         ties hereto to consummate the Merger shall be subject to ful-
         fillment of the following conditions:





                                       -41-<PAGE>







                   (a)  No temporary restraining order, preliminary or
              permanent injunction or other order or decree which pre-
              vents the consummation of the Merger shall have been is-
              sued and remain in effect, and no statute, rule or regu-
              lation shall have been enacted by any Governmental Author-
              ity which prevents the consummation of the Merger.

                   (b)  All waiting periods applicable to the consumma-
              tion of the Merger under the HSR Act shall have expired or
              been terminated.

                   (c)  The Merger and the transactions contemplated
              hereby shall have been approved by the Pyxis Stockholders
              in the manner required by any Applicable Law.

                   (d)  The issuance of the Cardinal Common Shares to be
              issued in the Merger and the transactions contemplated
              hereby shall have been approved by the Cardinal Sharehold-
              ers in the manner required by any Applicable Law.

                   (e)  The Commission shall have declared the Cardinal
              Registration Statement effective.  On the Closing Date and
              at the Effective Time, no stop order or similar restrain-
              ing order shall have been threatened by the Commission or
              entered by the Commission or any state securities admin-
              istrator prohibiting the Merger.

                   (f)  Pyxis shall have received an opinion of Pills-
              bury, Madison & Sutro LLP substantially to the effect
              that, under Applicable Law, for Federal income tax pur-
              poses, the Merger will constitute a reorganization under
              Section 368 of the Code.

                   (g)  Cardinal shall have received a letter, in form
              and substance reasonably satisfactory to Cardinal, from
              Deloitte & Touche L.L.P. dated the date of the Joint Proxy
              Statement and confirmed in writing at the Effective Time
              stating that the Merger will qualify as a pooling of in-
              terests transaction under Opinion 16 of the Accounting
              Principles Board.

                   (h)  No Action shall be instituted by any Governmen-
              tal Authority which seeks to prevent consummation of the
              Merger or seeking material damages in connection with the
              transactions contemplated hereby which continues to be
              outstanding.

                   6.2  Conditions to Obligations of Pyxis.  The obliga-
         tions of Pyxis to consummate the Merger and the transactions

                                       -42-<PAGE>







         contemplated hereby shall be subject to the fulfillment of the
         following conditions unless waived by Pyxis:

                   (a)  The representations and warranties of each of
              Cardinal and Subcorp set forth in Article III shall be
              true and correct on the date hereof and on and as of the
              Closing Date as though made on and as of the Closing Date
              (except for representations and warranties made as of a
              specified date, which need be true and correct only as of
              the specified date), except for such inaccuracies which
              have not had and would not reasonably be expected to have
              in the reasonably foreseeable future a material adverse
              effect on Cardinal.  

                   (b)  Each of Cardinal and Subcorp shall have per-
              formed in all material respects each obligation and agree-
              ment and shall have complied in all material respects with
              each covenant to be performed and complied with by it
              hereunder at or prior to the Effective Time.

                   (c)  Each of Cardinal and Subcorp shall have fur-
              nished Pyxis with a certificate dated the Closing Date
              signed on behalf of it by the Chairman, President or any
              Vice President to the effect that the conditions set forth
              in Sections 6.2(a) and (b) have been satisfied.

                   (d)  Pyxis shall have received the legal opinion,
              dated the Closing Date, of Wachtell, Lipton, Rosen & Katz,
              special counsel to Cardinal, in substantially the form at-
              tached hereto as Exhibit B.

                   (e)  The Cardinal Common Shares to be issued in the
              Merger and the transactions contemplated hereby shall have
              been authorized for inclusion on the NYSE, subject to of-
              ficial notice of issuance.

                   (f)  Since the date of this Agreement, except to the
              extent contemplated by Section 3.11 to the Cardinal
              Disclosure Schedule, there shall not have been any
              material adverse change in the assets, liabilities,
              results of operations, business or financial condition of
              Cardinal and its subsidiaries taken as a whole or any ma-
              terial adverse effect on the ability of Cardinal to
              consummate the transactions contemplated hereby.

                   6.3  Conditions to Obligations of Cardinal and Sub-
         corp.  The obligations of Cardinal to consummate the Merger and
         the other transactions contemplated hereby shall be subject to
         the fulfillment of the following conditions unless waived by
         each of Cardinal and Subcorp:

                                       -43-<PAGE>







                   (a)  The representations and warranties of Pyxis set
              forth in (i) Article IV shall be true and correct on the
              date hereof and on and as of the Closing Date as though
              made on and as of the Closing Date (except for representa-
              tions and warranties made as of a specified date, which
              need be true and correct only as of the specified date),
              except for such inaccuracies which have not had and would
              not reasonably be expected to have in the reasonably fore-
              seeable future a material adverse effect on Pyxis and (ii)
              Section 4.28(b) and (c) shall be true and correct on the
              date hereof and on and as of the Closing Date as though
              made on and as of the Closing Date.  

                   (b)  Pyxis shall have performed in all material re-
              spects each obligation and agreement and shall have com-
              plied in all material respects with each covenant to be
              performed and complied with by it hereunder at or prior to
              the Effective Time.

                   (c)  Pyxis shall have furnished Cardinal with a cer-
              tificate dated the Closing Date signed on its behalf by
              its Chairman, President or any Vice President to the ef-
              fect that the conditions set forth in Sections 6.3(a) and
              (b) have been satisfied.

                   (d)  Cardinal shall have received the legal opinion,
              dated the Closing Date, of Pillsbury Madison & Sutro LLP,
              substantially in the form attached hereto as Exhibit C.

                   (e)  Each person who may be at the Effective Time or
              was on the date of this Agreement an "affiliate" of Pyxis
              for purposes of Rule 145 under the Securities Act, shall
              have executed and delivered to Cardinal at least 35 days
              prior to the date of the meeting of Pyxis Stockholders to
              approve the Merger the written undertakings in the form
              attached hereto as Exhibit A. 

                   (f)  There shall not have been a breach of (i) any
              obligation by any stockholder which has entered into a
              Support Agreement or (ii) the Stock Option Agreement.

                   (g)  Since the date of this Agreement, except to the
              extent contemplated by Section 4.6 to the Pyxis Disclosure
              Schedule, there shall not have been any material adverse
              change in the assets, liabilities, results of operations,
              business or financial condition of Pyxis and its subsid-
              iaries taken as a whole or any material adverse effect on
              the ability of Pyxis to consummate the transactions con-
              templated hereby.

                                       -44-<PAGE>







                                   ARTICLE VII

                            TERMINATION AND AMENDMENT

                   7.1  Termination.  This Agreement may be terminated
         at any time prior to the Effective Time, whether before or af-
         ter approval and adoption of this Agreement by Pyxis Stockhold-
         ers and Cardinal Shareholders:

                   (a)  by mutual consent of Cardinal and Pyxis;

                   (b)  by either Cardinal or Pyxis if any permanent in-
              junction or other order of a court or other competent Gov-
              ernmental Authority preventing the consummation of the
              Merger shall have become final and nonappealable;

                   (c)  by either Cardinal or Pyxis if the Merger shall
              not have been consummated before June 30, 1996, unless
              extended by the Boards of Directors of both Cardinal and
              Pyxis (provided that the right to terminate this Agreement
              under this Section 7.1(c) shall not be available to any
              party whose failure or whose affiliate's failure to per-
              form any material covenant or obligation under this Agree-
              ment has been the cause of or resulted in the failure of
              the Merger to occur on or before such date);

                   (d)  by either Cardinal or Pyxis, no earlier than the
              fifth trading day nor later than the third full trading
              day immediately preceding the earlier of (i) the meeting
              of Pyxis Stockholders at which the vote to approve the
              Merger occurs or (ii) the meeting of Cardinal Shareholders
              at which the vote to approve and authorize the issuance of
              Cardinal Common Shares in the Merger occurs, if the
              Average Share Price is less than $55.34, provided that
              Pyxis will have no right to terminate pursuant to this
              paragraph (d) unless (x) Pyxis shall have given, during
              the three trading day period set forth above, one full
              trading day's prior written notice of its intention to
              terminate pursuant to this Section 7.1(d) and (y) Cardinal
              during such one full trading day notice period shall not
              have given written notice (an "Adjustment Election") to
              Pyxis that the Exchange Ratio shall be calculated pursuant
              to clause (ii) of Section 2.2;

                   (e)  by Cardinal if the Board of Directors of Pyxis
              shall withdraw, modify or change its recommendation of
              this Agreement or the Merger in a manner adverse to
              Cardinal, or if the Board of Directors of Pyxis shall have
              refused to affirm its recommendation within two business

                                       -45-<PAGE>







              days of any written request from Cardinal which request
              was made upon a reasonable basis;

                   (f)  by Cardinal or Pyxis if at the meeting of Pyxis
              Stockholders (including any adjournment or postponement
              thereof) the requisite vote of the Pyxis Stockholders to
              approve the Merger and the transactions contemplated
              hereby shall not have been obtained; 

                   (g)  by Cardinal or Pyxis if the authorization of the
              Cardinal Shareholders with respect to the issuance of
              Cardinal Common Shares in the Merger shall not have been
              obtained by reason of the failure to obtain the required
              vote at a meeting held for such purpose; 

                   (h)  by Cardinal if Pyxis shall have breached any of
              its obligations under the Stock Option Agreement; or

                   (i)  by Cardinal if at any time the representations
              and warranties of Pyxis set forth in Section 4.15 shall
              not be true and correct and Cardinal shall have been ad-
              vised that the condition set forth in Section 6.1(g) can-
              not be satisfied.

                   7.2  Effect of Termination.  In the event of the ter-
         mination of this Agreement pursuant to Section 7.1, this Agree-
         ment, except for the provisions of the last sentence of Section
         5.1(g) and the provisions of Sections 7.2 and 8.10, shall be-
         come void and have no effect, without any liability on the part
         of any party or its directors, officers or stockholders.  Not-
         withstanding the foregoing, nothing in this Section 7.2 shall
         relieve any party to this Agreement of liability for a material
         breach of any provision of this Agreement and provided, fur-
         ther, however, that if it shall be judicially determined that
         termination of this Agreement was caused by an intentional
         breach of this Agreement, then, in addition to other remedies
         at law or equity for breach of this Agreement, the party so
         found to have intentionally breached this Agreement shall in-
         demnify and hold harmless the other parties for their respec-
         tive costs, fees and expenses of their counsel, accountants,
         financial advisors and other experts and advisors as well as
         fees and expense incident to negotiation, preparation and exe-
         cution of this Agreement and related documentation and share-
         holders' meetings and consents ("Costs") up to but not in ex-
         cess of an amount equal to $2 million in the aggregate.  If
         this Agreement is terminated for any reason pursuant to Section
         7.1 (other than a termination pursuant to Section 7.1(a),
         7.1(b), 7.1(c) (other than a termination by Cardinal pursuant
         to Section 7.1(c) if Pyxis's or Pyxis's affiliates failure to
         perform any material covenant or obligation under this

                                       -46-<PAGE>







         Agreement has been the cause of or resulted in the failure of
         the Merger to occur on or before June 30, 1996), 7.1(d), 7.1(g)
         or 7.1(i)) Pyxis will, in the case of a termination by
         Cardinal, within three business days following any such
         termination or, in the case of a termination by Pyxis, prior to
         such termination, pay to Cardinal in cash by wire transfer in
         immediately available funds to an account designated by
         Cardinal (i) in reimbursement for Cardinal's expenses an amount
         in cash equal to the aggregate amount of Cardinal's Costs
         incurred in connection with pursuing the transactions
         contemplated by this Agreement, including, without limitation,
         legal, accounting and investment banking fees, up to but not in
         excess of an amount equal to $2 million in the aggregate and
         (ii) a termination fee in an amount equal to $28 million.  In
         the event of the termination of this Agreement pursuant to
         Section 7.1(i), Pyxis will within three business days following
         any such termination pay to Cardinal in cash by wire transfer
         in immediately available funds to an account designated by
         Cardinal in reimbursement for Cardinal's expenses an amount in
         cash equal to the aggregate amount of Cardinal's Costs incurred
         in connection with pursuing the transactions contemplated by
         this Agreement, including, without limitation, legal, account-
         ing and investment banking fees, up to but not in excess of an
         amount equal to $2 million in the aggregate. 

                   7.3  Amendment.  This Agreement may be amended by the
         parties hereto, by action taken or authorized by their respec-
         tive Boards of Directors, at any time before or after adoption
         of this Agreement by Pyxis Stockholders or authorization of
         issuance of Cardinal Common Shares in the Merger by Cardinal
         Shareholders, but after each such approval or authorization, no
         amendment shall be made which by law requires further approval
         or authorization by the Pyxis Stockholders or Cardinal Share-
         holders, as the case may be, without such further approval or
         authorization.  Notwithstanding the foregoing, this Agreement
         may not be amended except by an instrument in writing signed on
         behalf of each of the parties hereto.

                   7.4  Extension; Waiver.  At any time prior to the
         Effective Time, Cardinal (with respect to Pyxis) and Pyxis
         (with respect to Cardinal and Subcorp) by action taken or au-
         thorized by their respective Boards of Directors, may, to the
         extent legally allowed, (a) extend the time for the performance
         of any of the obligations or other acts of such party, (b)
         waive any inaccuracies in the representations and warranties
         contained herein or in any document delivered pursuant hereto
         and (c) waive compliance with any of the agreements or condi-
         tions contained herein.  Any agreement on the part of a party
         hereto to any such extension or waiver shall be valid only if

                                       -47-<PAGE>







         set forth in a written instrument signed on behalf of such
         party.


                                   ARTICLE VIII

                                  MISCELLANEOUS

                   8.1  Survival of Representations and Warranties.  The
         representations and warranties made herein by the parties here-
         to shall not survive the Effective Time.  This Section 8.1
         shall not limit any covenant or agreement of the parties here-
         to, which by its terms contemplates performance after the Ef-
         fective Time or the termination of this Agreement.

                   8.2  Notices.  All notices and other communications
         hereunder shall be in writing and shall be deemed given if de-
         livered personally, telecopied (which is confirmed) or dis-
         patched by a nationally recognized overnight courier service to
         the parties at the following addresses (or at such other ad-
         dress for a party as shall be specified by like notice):

                   (a)  if to Cardinal or Subcorp:

                        Cardinal Health, Inc.
                        5555 Glendon Court
                        Dublin, Ohio  43016
                        Attention:  Robert D. Walter
                        Telecopy No.:  (614) 717-8919

                        with a copy to

                        David A. Katz
                        Wachtell, Lipton, Rosen & Katz
                        51 West 52nd Street
                        New York, New York  10019
                        Telecopy No.:  (212) 403-2000

                   (b)  if to Pyxis:

                        Pyxis Corporation
                        9380 Carroll Park Drive
                        San Diego, California  92121
                        Attention:  Ronald R. Taylor  
                        Telecopy No.:  (619) 625-6684

                        with a copy to

                        Thomas E. Sparks, Jr.

                                       -48-<PAGE>







                        Pillsbury Madison & Sutro LLP
                        235 Montgomery Street
                        San Francisco, California  94104
                        Telecopy No.:  (415) 983-1200

                   8.3  Interpretation.  When a reference is made in
         this Agreement to an Article or Section, such reference shall
         be to an Article or Section of this Agreement unless otherwise
         indicated.  The headings and the table of contents contained in
         this Agreement are for reference purposes only and shall not
         affect in any way the meaning or interpretation of this Agree-
         ment.  When a reference is made in this Agreement to Pyxis,
         such reference shall be deemed to include any and all subsid-
         iaries of Pyxis, individually and in the aggregate, except for
         Sections 4.1, 4.2, 4.3, 4.4, 4.6, 4.8, 4.16, 4.24 and 4.30.
         When a reference is made in this Agreement to Pyxis Common
         Stock or shares thereof, such reference shall be deemed to
         include the preferred share purchase rights issued pursuant to
         the Rights Agreement that trade together with the Pyxis Common
         Stock.  For the purposes of any provision of this agreement, a
         "material adverse effect" with respect to any party shall be
         deemed to occur if the aggregate consequences of all breaches
         and inaccuracies of covenants and representations of such party
         under this Agreement, when read without any exception or quali-
         fication for a material adverse effect, are reasonably likely
         to have a material adverse effect on the assets, liabilities,
         results of operations or financial condition of such party and
         its subsidiaries taken as a whole.  

                   8.4  Counterparts.  This Agreement may be executed in
         counterparts, which together shall constitute one and the same
         Agreement.  The parties may execute more than one copy of the
         Agreement, each of which shall constitute an original.

                   8.5  Entire Agreement.  This Agreement (including the
         documents and the instruments referred to herein), the Support
         Agreements, the Stock Option Agreement and the Confidentiality
         Agreement constitute the entire agreement among the parties and
         supersede all prior agreements and understandings, agreements
         or representations by or among the parties, written and oral,
         with respect to the subject matter hereof and thereof.

                   8.6  Third Party Beneficiaries.  Nothing in this
         Agreement, express or implied, is intended or shall be con-
         strued to create any third party beneficiaries other than Sec-
         tions 5.1(h) and 5.2(d).

                   8.7  Governing Law.  This Agreement shall be governed
         and construed in accordance with the laws of the State of Dela-
         ware without regard to principles of conflicts of law.

                                       -49-<PAGE>







                   8.8  Specific Performance.  The transactions contem-
         plated by this Agreement are unique.  Accordingly, each of the
         parties acknowledges and agrees that, in addition to all other
         remedies to which it may be entitled, each of the parties here-
         to is entitled to a decree of specific performance, provided
         such party is not in material default hereunder.

                   8.9  Assignment.  Neither this Agreement nor any of
         the rights, interests or obligations hereunder shall be as-
         signed by any of the parties hereto (whether by operation of
         law or otherwise) without the prior written consent of the
         other parties.  Subject to the preceding sentence, this Agree-
         ment shall be binding upon, inure to the benefit of and be en-
         forceable by the parties and their respective successors and
         assigns.

                   8.10  Expenses.  Subject to the provisions of Section
         7.2. and of the Stock Option Agreement, Cardinal and Pyxis
         shall pay their own costs and expenses associated with the
         transactions contemplated by this Agreement.

                   8.11  Pyxis Disclosure Schedule.  Prior to the close
         of business on February 8, 1996, Pyxis may supplement or amend
         Sections 4.16, 4.17, 5.2(d) and/or 5.3(c) to the Pyxis
         Disclosure Schedule or provide copies of any Contracts or
         documents referenced thereon not provided to Cardinal prior to
         the date of this Agreement.  Cardinal shall, no later than the
         close of business on February 9, 1996, notify Pyxis if Cardinal
         has reasonably concluded that the inclusion in such Sections or
         in such supplement or amendment of any Contracts, documents or
         items could reasonably be deemed to adversely impact in any
         material respect the benefits to be realized by Cardinal after
         consummation of the Merger.  Pyxis may at its option (subject
         to Section 5.1(a) of this Agreement) terminate or amend, or
         take such other action with respect to, the objectionable
         Contracts, documents or items in such Sections, amendment or
         supplement to the extent reasonably requested by Cardinal.  To
         the extent such objectionable Contracts, documents or items are
         set forth in Sections 4.16 or 4.17 to the Pyxis Disclosure
         Schedule or a supplement or amendment thereto and have not been
         terminated, amended or otherwise dealt with to Cardinal's rea-
         sonable satisfaction, the representations in Section 4.16 or
         4.17 of this Agreement, as the case may be, shall be deemed to
         be not true and correct in all material respects.  To the
         extent such objectionable Contracts, documents or items are set
         forth in Section 5.2(d) or 5.3(c) to the Pyxis Disclosure
         Schedule or a supplement or amendment thereto and have not been
         terminated, amended or otherwise dealt with to Cardinal's rea-
         sonable satisfaction, such Contracts, documents or items shall
         be removed from Section 5.2(d) or 5.3(c) to the Pyxis
         Disclosure Schedule, as the case may be.

                                       -50-<PAGE>







                   IN WITNESS WHEREOF, Cardinal, Subcorp and Pyxis have
         signed this Agreement as of the date first written above.

                                    CARDINAL HEALTH, INC.


                                    By: /s/ Robert D. Walter         
                                        Robert D. Walter
                                        Chairman and CEO


                                    AZTEC MERGER CORP.


                                    By: /s/ Robert D. Walter         



                                    PYXIS CORPORATION

                                    By: /s/ Ron Taylor         
                                        Ron Taylor
                                        Chairman and CEO


























                                       -51-










                             STOCK OPTION AGREEMENT


                   STOCK OPTION AGREEMENT ("Option Agreement") dated
         February 7, 1996, between CARDINAL HEALTH, INC. ("Cardinal"),
         an Ohio corporation and PYXIS CORPORATION ("Pyxis"), a
         Delaware corporation.

                              W I T N E S S E T H:

                   WHEREAS, the Board of Directors of Cardinal and the
         Board of Directors of Pyxis have approved an Agreement and
         Plan of Merger dated as of even date herewith (the "Merger
         Agreement") providing for the merger of a wholly owned
         subsidiary of Cardinal with and into Pyxis;

                   WHEREAS, as a condition and inducement to
         Cardinal's willingness to enter into the Merger Agreement,
         Cardinal has required that Pyxis agree, and Pyxis has agreed,
         to grant to Cardinal the option set forth herein to purchase
         authorized but unissued shares of Pyxis Common Stock;

                   NOW, THEREFORE, in consideration of the premises
         herein contained, the parties agree as follows:

                   1.  Definitions.

                   Capitalized terms used but not defined herein shall
         have the same meanings as in the Merger Agreement.

                   2.  Grant of Option.

                   Subject to the terms and conditions set forth
         herein, Pyxis hereby grants to Cardinal an irrevocable option
         (the "Option") to purchase up to 7,275,861 authorized and
         unissued shares of Pyxis Common Stock at a price per share
         (the "Purchase Price") equal to the lower of (x) $24.80 or
         (y) the Exchange Ratio multiplied by the closing price of
         Cardinal Common Shares as reported on the NYSE composite tape
         on the last trading day immediately preceding the Notice Date
         (as hereinafter defined), payable in cash as provided in
         Section 4 hereof.

                   3.  Exercise of Option.

                   (a)   Cardinal may exercise the Option, in whole or
         in part, at any time or from time to time if a Purchase Event
         (as defined below) shall have occurred;  provided, however,
         that, to the extent the Option shall not have been previously
         exercised, it shall terminate and be of no further force and<PAGE>







         effect upon the earliest to occur of (i) the Effective Time
         of the Merger and (ii) the termination of the Merger Agree-
         ment (A) in accordance with Sections 7.1(a), 7.1(b), 7.1(c)
         (other than a termination by Cardinal pursuant to Section
         7.1(c) of the Merger Agreement if Pyxis's or Pyxis's
         affiliate's failure to perform any material covenant or
         obligation under the Merger Agreement has been the cause of
         or resulted in the failure of the Merger to occur on or
         before June 30, 1996), 7.1(d), 7.1(g) or 7.1(i) of the Merger
         Agreement; provided further, however, if (x) the Merger
         Agreement is terminated other than as provided in clause (ii)
         above, or (y) the termination of the Merger Agreement (other
         than a termination (I) pursuant to Sections 7.1(a), 7.1(c)
         (other than a termination by Cardinal pursuant to Section
         7.1(c) of the Merger Agreement if Pyxis's or Pyxis's
         affiliate's failure to perform any material covenant or
         obligation under the Merger Agreement has been the cause of
         or resulted in the failure of the Merger to occur on or
         before June 30, 1996), 7.1(g) or 7.1(i) or (II) by Aztec
         pursuant to Section 7.1(d)) occurs after a Purchase Event,
         the Option shall not terminate until the date that is 12
         months following such termination.  Notwithstanding the
         foregoing, if the Option cannot be exercised before its date
         of termination as a result of any injunction, order or simi-
         lar restraint issued by a court of competent jurisdiction,
         the Option shall expire on the 30th business day after such
         injunction, order or restraint shall have been dissolved or
         when such injunction, order or restraint shall have become
         permanent and no longer subject to appeal, as the case may
         be.

                   (b)   As used herein, a "Purchase Event" shall mean
         any of the following events:

                   (i)   any person (other than Cardinal or any of its
              subsidiaries) shall have commenced (as such term is
              defined in Rule 14d-2 under the Securities Exchange Act
              of 1934, as amended (the "Exchange Act")), or shall have
              filed a registration statement under the Securities Act
              of 1933, as amended (the "Securities Act"), with respect
              to, a tender offer or exchange offer to purchase any
              shares of Pyxis Common Stock such that, upon
              consummation of such offer, such person would own or
              control 10% or more of the then outstanding Pyxis Common
              Stock;

                   (ii)  Pyxis or any of its subsidiaries shall or
              shall have entered into, authorized, recommended,
              proposed or publicly announced an intention to enter
              into, authorize, recommend, or propose, an agreement,

                                      -2-<PAGE>







              arrangement or understanding with any person (other than
              Cardinal or any of its subsidiaries) to, or any person
              (other than Cardinal or any of its subsidiaries) shall
              have publicly announced a bona fide intention to, (A)
              effect any Competing Transaction, (B) purchase, lease or
              otherwise acquire 10% or more of the assets of Pyxis or
              any of its subsidiaries or (C) purchase or otherwise
              acquire (including by way of merger, consolidation,
              tender or exchange offer or similar transaction) Benefi-
              cial Ownership (as defined below) of securities repre-
              senting 10% or more of the voting power of Pyxis or any
              of its subsidiaries;

                   (iii) any person (other than Cardinal or any
              subsidiary of Cardinal) shall have acquired Beneficial
              Ownership or the right to acquire Beneficial Ownership
              of 10% or more of the voting power of Pyxis;

                   (iv)  Pyxis's Board of Directors shall have with-
              drawn or modified in a manner adverse to Cardinal the
              recommendation of Pyxis's Board of Directors with
              respect to the Merger Agreement and/or the Merger;

                   (v)   if at the meeting of Pyxis Stockholders
              (including any adjournment or postponement thereof) the
              requisite vote of the Pyxis Stockholders to approve the
              Merger and the transactions contemplated by the Merger
              Agreement shall not have been obtained; or

                   (vi)  the Merger Agreement shall have been
              terminated by either party pursuant to Section 7.1
              thereof (other than a termination pursuant to Sections
              7.1(a), 7.1(b), 7.1(c) (other than a termination by
              Cardinal pursuant to Section 7.1(c) of the Merger
              Agreement if Pyxis's or Pyxis's affiliate's failure to
              perform any material covenant or obligation under the
              Merger Agreement has been the cause of or resulted in
              the failure of the Merger to occur on or before June 30,
              1996), 7.1(d), 7.1(g) or 7.1(i)) or any event shall have
              occurred that would cause any party thereto to have the
              right to so terminate the Merger Agreement.

                   (c)   As used herein, the terms "Beneficial Owner-
         ship", "Beneficial Owner" and "Beneficially Own" shall have
         the meanings ascribed to them in Rule 13d-3 under the Ex-
         change Act.  As used herein, "person" shall have the meaning
         specified in Sections 3(a)(9) and 13(d)(3) of the Exchange
         Act.

                                      -3-<PAGE>







                   (d)   In the event Cardinal wishes to exercise the
         Option, it shall deliver to Pyxis a written notice (the date
         of which being herein referred to as the "Notice Date")
         specifying (i) the total number of shares it intends to pur-
         chase pursuant to such exercise and (ii) a place and date not
         earlier than two business days nor later than 60 calendar
         days from the Notice Date for the closing of such purchase
         (the "Closing Date"); provided that if the closing of the
         purchase and sale pursuant to the Option (the "Closing")
         cannot be consummated by reason of any applicable judgment,
         decree, order, law or regulation, the period of time that
         otherwise would run pursuant to this sentence shall run
         instead from the date on which such restriction on
         consummation has expired or been terminated; and, provided
         further that, without limiting the foregoing, if prior
         notification to or approval of any regulatory authority is
         required in connection with such purchase, Cardinal and, if
         applicable, Pyxis shall promptly file the required notice or
         application for approval and shall expeditiously process the
         same (and Pyxis shall cooperate with Cardinal in the filing
         of any such notice or application and the obtaining of any
         such approval), and the period of time that otherwise would
         run pursuant to this sentence shall run instead from the date
         on which, as the case may be, (i) any required notification
         period has expired or been terminated or (ii) such approval
         has been obtained, and in either event, any requisite waiting
         period has passed.

                   (e)   In the event (i) Cardinal receives official
         notice that an approval of any regulatory authority required
         for the purchase of Option Shares would not be issued or
         granted or (ii) a Closing Date shall not have occurred within
         18 months after the related Notice Date due to the failure to
         obtain any such required approval, Cardinal shall be entitled
         to exercise its right as set forth in Section 7 or, to the
         extent legally permitted, to exercise the Option in
         connection with the resale of Pyxis Common Stock or other
         securities pursuant to a registration statement as provided
         in Section 9.  The provisions of this Section 3 and Section 6
         shall apply with appropriate adjustments to any such
         exercise.

                   4.  Payment and Delivery of Certificates.

                   (a)   At the Closing, referred to in Section 3
         hereof, Cardinal shall pay to Pyxis the aggregate Purchase
         Price for the shares of Pyxis Common Stock purchased pursuant
         to the exercise of the Option in immediately available funds
         by wire transfer to a bank account designated not later than
         one business day prior to the Closing Date by Pyxis.

                                      -4-<PAGE>








                   (b)   At such closing, simultaneously with the de-
         livery of cash as provided in Section 4(a), Pyxis shall de-
         liver to Cardinal a certificate or certificates representing
         the number of shares of Pyxis Common Stock purchased by
         Cardinal, registered in the name of Cardinal or a nominee
         designated in writing by Cardinal, which shares shall be
         fully paid and non-assessable and free and clear of all
         liens, claims, charges and encumbrances of any kind
         whatsoever.

                   (c)   If at the time of issuance of any Pyxis Common
         Stock pursuant to any exercise of the Option, Pyxis shall
         have issued any share purchase rights or similar securities
         to holders of Pyxis Common Stock, then each such share of
         Pyxis Common Stock shall also represent rights with terms
         substantially the same as and at least as favorable to
         Cardinal as those issued to other holders of Pyxis Common
         Stock.

                   (d)   Certificates for Pyxis Common Stock delivered
         at any closing hereunder shall be endorsed with a restrictive
         legend which shall read substantially as follows:

                   The shares represented by this certificate are
                   subject to certain provisions of an agreement
                   between the registered holder hereof and Pyxis
                   Corporation, a copy of which is on file at the
                   principal office of Pyxis Corporation, and to
                   resale restrictions arising under the Securities
                   Act of 1933, as amended, and any applicable state
                   securities laws.  A copy of such agreement will be
                   provided to the holder hereof without charge upon
                   receipt by Pyxis Corporation of a written request
                   therefor.

         It is understood and agreed that the above legend shall be
         removed by delivery of substitute certificate(s) without such
         legend if Cardinal shall have delivered to Pyxis an opinion
         of counsel reasonably satisfactory to Pyxis to the effect
         that such legend is not required for purposes of the
         Securities Act and any applicable state securities laws.

                   5.  Authorization, etc.

                   (a)   Pyxis hereby represents and warrants to
         Cardinal that:

                                      -5-<PAGE>







                   (i)   Pyxis has full corporate authority to execute
              and deliver this Option Agreement and to consummate the
              transactions contemplated hereby;

                   (ii)  such execution, delivery and consummation have
              been authorized by the Board of Directors of Pyxis, and
              no other corporate proceedings are necessary therefor;

                   (iii) this Option Agreement has been duly and
              validly executed and delivered and represents a valid
              and legally binding obligation of Pyxis, enforceable
              against Pyxis in accordance with its terms;

                   (iv)  Pyxis has taken all necessary corporate action
              to authorize and reserve and permit it to issue and, at
              all times from the date hereof through the date of the
              exercise in full or the expiration or termination of the
              Option, shall have reserved for issuance upon exercise
              of the Option, 7,275,861 shares of Pyxis Common Stock,
              all of which, upon issuance pursuant hereto, shall be
              duly authorized, validly issued, fully paid and
              nonassessable, and shall be delivered free and clear of
              all claims, liens, encumbrances, restrictions and
              security interests and not subject to any preemptive
              rights; and

                   (v)   The Rights Agreement dated as of August 5,
              1994, between Pyxis and First Interstate Bank (the
              "Rights Agreement"), has been amended, and will remain
              amended (and no replacement plan will be adopted), so as
              to provide that none of Cardinal and its affiliates will
              become an "Acquiring Person" and that no "Stock
              Acquisition Date" or "Distribution Date" (as such terms
              are defined in the Rights Agreement) will occur as a
              result of the execution of this Option Agreement, the
              grant of the Option hereunder or the acquisition or
              transfer of shares of Pyxis Common Stock by Cardinal
              pursuant to the exercise, in whole or in part, of the
              Option.

                   (b)   Pyxis hereby agrees that, prior to the
         termination of the Option pursuant to Section 3(a) hereof,
         Pyxis shall not take, or allow to be taken, any action that
         could result in the representations and warranties set forth
         in Section 5(a)(v) hereof becoming false or inaccurate.

                   (c)   Cardinal hereby represents and warrants to
         Pyxis that:

                                      -6-<PAGE>







                   (i)   Cardinal has full corporate authority to ex-
              ecute and deliver this Option Agreement and to consum-
              mate the transactions contemplated hereby;

                   (ii)  such execution, delivery and consummation have
              been authorized by all requisite corporate action by
              Cardinal, and no other corporate proceedings are neces-
              sary therefor;

                   (iii) this Option Agreement has been duly and
              validly executed and delivered and represents a valid
              and legally binding obligation of Cardinal, enforceable
              against Cardinal in accordance with its terms; and

                   (iv)  any Pyxis Common Stock or other securities ac-
              quired by Cardinal upon exercise of the Option will not
              be taken with a view to the public distribution thereof
              and will not be transferred or otherwise disposed of ex-
              cept in compliance with the Securities Act.

                   6.  Adjustment upon Changes in Capitalization.

                   (a)   In the event of any change in Pyxis Common
         Stock by reason of a stock dividend, split-up,
         recapitalization, combination, exchange of shares or similar
         transaction, the type and number of shares or securities
         subject to the Option, and the Purchase Price therefor, shall
         be adjusted appropriately, and proper provision shall be made
         in the agreements governing such transaction, so that
         Cardinal shall receive upon exercise of the Option the same
         class and number of outstanding shares or other securities or
         property that Cardinal would have received in respect of
         Pyxis Common Stock if the Option had been exercised
         immediately prior to such event, or the record date therefor,
         as applicable.  If any additional shares of Pyxis Common
         Stock are issued after the date of this Option Agreement
         (other than pursuant to an event described in the first
         sentence of this Section 6(a) or pursuant to this Option
         Agreement) the number of shares of Pyxis Common Stock subject
         to the Option shall be adjusted so that, after such issuance,
         it equals 19.9% of the number of shares of Pyxis Common Stock
         then issued and outstanding, without giving effect to any
         shares subject to or issued pursuant to the Option.

                   (b)   In the event that Pyxis shall enter into an
         agreement (i) to consolidate with or merge into any person,
         other than Cardinal or one of its subsidiaries, and shall not
         be the continuing or surviving corporation of such
         consolidation or merger, (ii) to permit any person, other
         than Cardinal or one of its subsidiaries, to merge into Pyxis

                                      -7-<PAGE>







         and Pyxis shall be the continuing or surviving corporation,
         but, in connection with such merger, the then outstanding
         shares of Pyxis Common Stock shall be changed into or
         exchanged for stock or other securities of Pyxis or any other
         person or cash or any other property or the shares of Pyxis
         Common Stock outstanding immediately before such merger shall
         after such merger represent less than 50% of the outstanding
         common shares and common share equivalents of Pyxis, or (iii)
         to sell or otherwise transfer all or substantially all of its
         assets to any person, other than Cardinal or one of its
         subsidiaries, then, and in each such case, the agreement
         governing such transaction shall make proper provisions so
         that the Option shall, upon the consummation of any such
         transaction and upon the terms and conditions set forth
         herein, be converted into, or exchanged for, an option, at
         the election of Cardinal, with respect to any of the
         following persons (as designated by Cardinal) (I) the
         Acquiring Corporation (as defined below), (II) any person
         that controls the Acquiring Corporation, or (III) in the case
         of a merger described in clause (ii), Pyxis.

                   (c)   For purposes hereof, "Acquiring Corporation"
         means (i) the continuing or surviving corporation of a
         consolidation or merger with Pyxis (if other than Pyxis),
         (ii) Pyxis in a merger in which Pyxis is the continuing or
         surviving corporation and (ii) the transferee of all or
         substantially all of Pyxis's assets.  The provisions of
         Sections 7, 8, 9 and 10 shall apply with appropriate
         adjustments to any securities for which the Option becomes
         exercisable pursuant to this Section 6.

                   7.  Repurchase.

                   (a)   At the request of Cardinal at any time
         commencing upon the occurrence of a Purchase Event and ending
         13 months immediately thereafter (the "Cardinal Repurchase
         Period"), Pyxis (or any successor entity thereof) shall
         repurchase the Option from Cardinal together with all (but
         not less than all) shares of Pyxis Common Stock purchased by
         Cardinal pursuant thereto with respect to which Cardinal then
         has Beneficial Ownership, at a price (when calculated on a
         per share basis, the "Per Share Repurchase Price") equal to
         the sum of:

                   (i)   The difference between (A) the "Market/Tender
              Offer Price" for shares of Pyxis Common Stock (defined
              as the higher of (x) the highest price per share at
              which a tender or exchange offer has been made for
              shares of Pyxis Common Stock or (y) the highest closing
              mean of the "bid" and the "ask" price per share of Pyxis

                                      -8-<PAGE>







              Common Stock reported by the Nasdaq National Market, the
              automated quotation system of the National Association
              of Securities Dealers, Inc., for any day within that
              portion of the Cardinal Repurchase Period which precedes
              the date Cardinal gives notice of the required
              repurchase under this Section 7) and (B) the exercise
              price as determined pursuant to Section 2 hereof
              (subject to adjustment as provided in Section 6), mul-
              tiplied by the number of shares of Pyxis Common Stock
              with respect to which the Option has not been exercised,
              but only if such Market/Tender Offer Price is greater
              than such exercise price;

                   (ii)  The exercise price paid by Cardinal for any
              shares of Pyxis Common Stock acquired pursuant to the
              Option;

                   (iii) The difference between the Market/Tender
              Offer Price and the exercise price paid by Cardinal for
              any shares of Pyxis Common Stock purchased pursuant to
              the exercise of the Option, multiplied by the number of
              shares so purchased, but only if such Market/Tender
              Offer Price is greater than such exercise price; and

                   (iv)  Cardinal's out-of-pocket expenses incurred in
              connection with pursuing the transactions contemplated
              by the Merger Agreement, including, without limitation,
              legal, accounting and investment banking fees, up to but
              not in excess of an amount equal to $2 million in the
              aggregate, less any amounts previously paid by Pyxis to
              Cardinal solely in reimbursement for Costs pursuant to
              Section 7.2 of the Merger Agreement.

                   (b)   In the event Cardinal exercises its rights un-
         der this Section 7, Pyxis shall, within 10 business days
         thereafter, pay the required amount to Cardinal by wire
         transfer of immediately available funds to an account
         designated by Cardinal and Cardinal shall surrender to Pyxis
         the Option and the certificates evidencing the shares of
         Pyxis Common Stock purchased thereunder with respect to which
         Cardinal then has Beneficial Ownership.

                   (c)   In determining the Market/Tender Offer Price,
         the value of any consideration other than cash shall be de-
         termined by an independent nationally recognized investment
         banking firm selected by Cardinal and reasonably acceptable
         to Pyxis.

                                      -9-<PAGE>







                   8.  Repurchase at Option of Pyxis

                   Except to the extent that Cardinal shall have
         previously exercised its rights under Section 7, at the re-
         quest of Pyxis during the six-month period commencing 13
         months following the first occurrence of a Purchase Event,
         Pyxis may repurchase from Cardinal, and Cardinal shall sell
         to Pyxis, all (but not less than all) of the Pyxis Common
         Stock acquired by Cardinal pursuant to the Option and with
         respect to which Cardinal has Beneficial Ownership at the
         time of such repurchase at a price per share equal to the
         greater of (i) 110% of the Market/Tender Offer Price per
         share (calculated in the manner set forth in Section 7(a)(i)
         hereof but utilizing the period beginning on the occurrence
         of a Purchase Event and ending on the date Pyxis exercises
         its repurchase right pursuant to this Section 8), (ii) the
         Per Share Repurchase Price or (iii) the sum of (A) the
         aggregate Purchase Price of the shares so repurchased plus
         (B) interest on the aggregate Purchase Price paid for the
         shares so repurchased from the date of purchase by Cardinal
         to the date of repurchase at the highest rate of interest an-
         nounced by Bank One, Columbus, NA as its prime or base
         lending or reference rate during such period, less any
         dividends received on the shares so repurchased, plus (C)
         Cardinal's out-of-pocket expenses incurred in connection with
         pursuing the transactions contemplated by the Merger
         Agreement, including, without limitation, legal, accounting
         and investment banking fees, less any amounts previously paid
         by Pyxis to Cardinal solely in reimbursement for Costs
         pursuant to Section 7.2(i) of the Merger Agreement, which sum
         shall be divided by the number of shares of Pyxis Common
         Stock to be repurchased by Pyxis.  Any repurchase under this
         Section 8 shall be consummated in accordance with Section
         7(b).

                   9.  Registration Rights.

                   At any time after a Purchase Event, Pyxis shall, if
         requested by any holder or Beneficial Owner of shares of
         Pyxis Common Stock issued upon exercise of the Option (each a
         "Holder"), as expeditiously as possible file a registration
         statement on a form for general use under the Securities Act
         if necessary in order to permit the sale or other disposition
         of the shares of Pyxis Common Stock that have been acquired
         upon exercise of the Option in accordance with the intended
         method of sale or other disposition requested by any such
         Holder.  Each such Holder shall provide all information
         reasonably requested by Pyxis for inclusion in any
         registration statement to be filed hereunder.  Pyxis shall
         use its best efforts to cause such registration statement

                                      -10-<PAGE>







         first to become effective and then to remain effective for
         such period not in excess of 180 days from the day such
         registration statement first becomes effective as may be
         reasonably necessary to effect such sales or other disposi-
         tions.  The registration effected under this Section 9 shall
         be at Pyxis's expense except for underwriting commissions and
         the fees and disbursements of such Holders' counsel at-
         tributable to the registration of such Pyxis Common Stock.
         In no event shall Pyxis be required to effect more than two
         registrations hereunder.  The filing of any registration
         statement required hereunder may be delayed for such period
         of time (not to exceed 60 days) as may reasonably be required
         to facilitate any public distribution by Pyxis of Pyxis
         Common Stock or if a special audit of Pyxis would otherwise
         be required in connection therewith.  If requested by any
         such Holder in connection with such registration, Pyxis shall
         become a party to any underwriting agreement relating to the
         sale of such shares on terms and including obligations and
         indemnities which are customary for parties similarly
         situated.  Upon receiving any request for registration under
         this Section 9 from any Holder, Pyxis agrees to send a copy
         thereof to any other person known to Pyxis to be entitled to
         registration rights under this Section 9, in each case by
         promptly mailing the same, postage prepaid, to the address of
         record of the persons entitled to receive such copies.

                   10.  Listing.

                   If Pyxis Common Stock or any other securities to be
         acquired upon exercise of the Option are then listed on the
         Nasdaq National Market or any national securities exchange,
         Pyxis, upon the request of Cardinal, will promptly file an
         application to list the shares of Pyxis Common Stock or other
         securities to be acquired upon exercise of the Option on the
         Nasdaq National Market or such exchange and will use its best
         efforts to obtain approval of such listings as soon as
         practicable.

                   11.  Severability.

                   Any term, provision, covenant or restriction con-
         tained in this Option Agreement held by a court or other
         Governmental Authority of competent jurisdiction to be
         invalid, void or unenforceable, shall be ineffective to the
         extent of such invalidity, voidness or unenforceability, but
         neither the remaining terms, provisions, covenants or
         restrictions contained in this Option Agreement nor the
         validity or enforceability thereof in any other jurisdiction
         shall be affected or impaired thereby.  Any term, provision,
         covenant or restriction contained in this Option Agreement

                                      -11-<PAGE>







         that is so found to be so broad as to be unenforceable shall
         be interpreted to be as broad as is enforceable.

                   12.  Miscellaneous.

                   (a)   Expenses.  Each of the parties hereto shall
         pay all costs and expenses incurred by it or on its behalf in
         connection with the transactions contemplated hereunder, in-
         cluding fees and expenses of its own financial consultants,
         investment bankers, accountants and counsel, except as other-
         wise provided herein.

                   (b)   Entire Agreement.  This Agreement, the Support
         Agreements, the Merger Agreement (including the documents and
         the instruments referred to therein) and the Confidentiality
         Agreement constitute the entire agreement among the parties
         and supersede all prior agreements and understandings,
         agreements or representations by or among the parties,
         written and oral, with respect to the subject matter hereof
         and thereof.

                   (c)   Successors; No Third Party Beneficiaries.  The
         terms and conditions of this Option Agreement shall inure to
         the benefit of and be binding upon the parties hereto and
         their respective successors and permitted assigns.  Nothing
         in this Option Agreement, expressed or implied, is intended
         to confer upon any party, other than the parties hereto, and
         their respective successors and assigns, any rights, reme-
         dies, obligations, or liabilities under or by reason of this
         Option Agreement, except as expressly provided herein.

                   (d)   Notices.  All notices or other communications
         which are required or permitted hereunder shall be in writing
         and sufficient if delivered in accordance with Section 8.2 of
         the Merger Agreement (which is incorporated herein by ref-
         erence).

                   (e)   Counterparts.  This Option Agreement may be
         executed in counterparts, and each such counterpart shall be
         deemed to be an original instrument, but both such counter-
         parts together shall constitute but one agreement.

                   (f)   Further Assurances.  In the event of any
         exercise of the Option by Cardinal, Pyxis and Cardinal shall
         execute and deliver all other documents and instruments and
         take all other action that may be reasonably necessary in
         order to consummate the transactions provided for by such
         exercise.

                                      -12-<PAGE>







                   (g)   Specific Performance.  The parties hereto
         agree that if for any reason Cardinal or Pyxis shall have
         failed to perform its obligations under this Option Agree-
         ment, then either party hereto seeking to enforce this Option
         Agreement against such non-performing party shall be entitled
         to specific performance and injunctive and other equitable
         relief, and the parties hereto further agree to waive any re-
         quirement for the securing or posting of any bond in connec-
         tion with the obtaining of any such injunctive or other equi-
         table relief.  This provision is without prejudice to any
         other rights that either party hereto may have against the
         other party hereto for any failure to perform its obligations
         under this Option Agreement.

                   (h)   Governing Law.  This Option Agreement shall be
         governed by and construed in accordance with the laws of the
         State of Delaware applicable to agreements made and entirely
         to be performed within such state.  Nothing in this Option
         Agreement shall be construed to require any party (or any
         subsidiary or affiliate of any party) to take any action or
         fail to take any action in violation of applicable law, rule
         or regulation.

                   (i)   Regulatory Approvals; Section 16(b).  If, in
         connection with the exercise of the Option under Section 3,
         prior notification to or approval of any Governmental
         Authority is required, then the required notice or applica-
         tion for approval shall be promptly filed and/or expedi-
         tiously processed by Pyxis and periods of time that otherwise
         would run pursuant hereto (if any) shall run instead from the
         date on which any such required notification period has
         expired or been terminated or such approval has been
         obtained, and in either event, any requisite waiting period
         shall have passed.  Periods of time that otherwise would run
         pursuant to Sections 3, 7 or 8 shall also be extended to the
         extent necessary to avoid liability under Section 16(b) of
         the Exchange Act.

                   (j)   Waiver and Amendment.  Any provision of this
         Agreement may be waived at any time by the party that is en-
         titled to the benefits of such provision.  This Option Agree-
         ment may not be modified, amended, altered or supplemented
         except upon the execution and delivery of a written agreement
         executed by the parties hereto.





                                      -13-<PAGE>








                   IN WITNESS WHEREOF, each of the parties hereto has
         executed this Option Agreement as of the date first written
         above.

                                       CARDINAL HEALTH, INC.



                                       By: /s/ Robert D. Walter      
                                          Name:  Robert D. Walter
                                          Title: Chairman and CEO



                                       PYXIS CORPORATION



                                       By: /s/ Ron Taylor             
                                          Name:  Ron Taylor
                                          Title: Chairman and CEO

























                                          -14-







                    [Form of Support/Voting Agreement]



                                       February 7, 1996


         Cardinal Health, Inc.
         5555 Glendon Court
         Dublin, Ohio  43016

                   Re:  Support/Voting Agreement

         Dear Sirs:

                   The undersigned understands that Cardinal Health,
         Inc. ("Cardinal"), Aztec Merger Corp., a wholly owned subsid-
         iary of Cardinal ("Subcorp"), and Pyxis Corporation ("Pyxis")
         are entering into an Agreement and Plan of Merger dated the
         date hereof (the "Agreement") providing for, among other
         things, a merger between Subcorp and Pyxis (the "Merger"), in
         which all of the outstanding shares of capital stock of Pyxis
         will be exchanged for shares of common stock, without par
         value, of Cardinal.

                   The undersigned is a stockholder of Pyxis (the
         "Stockholder") and is entering into this letter agreement to
         induce you to enter into the Agreement and to consummate the
         transactions contemplated thereby.

                   The Stockholder confirms its agreement with you as
         follows:

                   1.  The Stockholder represents, warrants and agrees
         that Schedule I annexed hereto sets forth the shares of the
         capital stock of Pyxis of which the Stockholder or its
         affiliates (as defined under the Securities Exchange Act of
         1934, as amended) is the record or beneficial owner (the
         "Shares") and that the Stockholder and its affiliates are on
         the date hereof the lawful owners of the number of Shares set
         forth in Schedule I, free and clear of all liens, charges,
         encumbrances, voting agreements and commitments of every
         kind, except as disclosed in Schedule I.  Except as set forth
         in Schedule I, neither the Stockholder nor any of its
         affiliates own or hold any rights to acquire any additional
         shares of the capital stock of Pyxis (by exercise of stock
         options or otherwise) or any interest therein or any voting
         rights with respect to any additional shares.  

                   2.  The Stockholder agrees that it will not, will
         not permit any company, trust or other entity controlled by
         the Stockholder to, and will not permit any of its affiliates<PAGE>








         to, contract to sell, sell or otherwise transfer or dispose
         of any of the Shares or any interest therein or securities
         convertible thereinto or any voting rights with respect
         thereto, other than (i) pursuant to the Merger or (ii) with
         your prior written consent.

                   3.  The Stockholder agrees to, will cause any
         company, trust or other entity controlled by the Stockholder
         to, and will cause its affiliates to, cooperate fully with
         you in connection with the Agreement and the transactions
         contemplated thereby.  The Stockholder agrees that it will
         not, will not permit any such company, trust or other entity
         to, and will not permit any of its affiliates to, directly or
         indirectly (including through its officers, directors,
         employees or other representatives) to solicit, initiate, en-
         courage or facilitate, or furnish or disclose non-public
         information in furtherance of, any inquiries or the making of
         any proposal with respect to any recapitalization, merger,
         consolidation or other business combination involving Pyxis,
         or acquisition of any capital stock or any material portion
         of the assets (except for acquisition of assets in the ordi-
         nary course of business consistent with past practice) of
         Pyxis, or any combination of the foregoing (a "Competing
         Transaction"), or negotiate, explore or otherwise engage in
         discussions with any person (other than Cardinal, Subcorp or
         their respective directors, officers, employees, agents and
         representatives) with respect to any Competing Transaction or
         enter into any agreement, arrangement or understanding with
         respect to any Competing Transaction or agree to or otherwise
         assist in the effectuation of any Competing Transaction;
         provided, however, that nothing herein shall prevent the
         Stockholder from taking any action or omitting to take any
         action (i) as a member of the Board of Directors of Pyxis
         necessary so as not to violate such Stockholder's fiduciary
         obligations as a Director or (ii) as an officer of Pyxis at
         the direction or request of the Board of Directors of Pyxis
         so long as such direction or request was not made in
         violation of any of the terms of the Agreement.

                   4.  The Stockholder agrees that all of the Shares
         beneficially owned by the Stockholder or its affiliates, or
         over which the Stockholder or any of its affiliates has
         voting power or control, directly or indirectly (including
         any common shares of Pyxis acquired after the date hereof),
         at the record date for any meeting of stockholders of Pyxis
         called to consider and vote to approve the Merger and the
         Agreement and/or the transactions contemplated thereby will
         be voted by the Stockholder or its affiliates in favor

                                      -2-<PAGE>








         thereof and that neither Stockholder nor any of its
         affiliates will vote such Shares in favor of any Competing
         Transaction.

                   5.  The Stockholder has all necessary power and au-
         thority to enter into this letter agreement.  This agreement
         is the legal, valid and binding agreement of the Stockholder,
         and is enforceable against the Stockholder in accordance with
         its terms.

                   6.  The Stockholder agrees that damages are an in-
         adequate remedy for the breach by Stockholder of any term or
         condition of this letter agreement and that you shall be en-
         titled to a temporary restraining order and preliminary and
         permanent injunctive relief in order to enforce our agree-
         ments herein.

































                                      -3-<PAGE>








                   This letter agreement may be terminated at the op-
         tion of any party at any time after the earlier of (i) ter-
         mination of the Agreement and (ii) the Effective Time (as
         defined in the Agreement).  Please confirm that the foregoing
         correctly states the understanding between us by signing and
         returning to me a counterpart hereof.

                                       Very truly yours,



                                       By:  _______________________
                                            Stockholder
         Confirmed on the date
         first above written.

         Cardinal Health, Inc.



         By:  ___________________________




























                                      -4-<PAGE>







                                   Schedule I

                                Stock Ownership

                              of                  


         Owned Beneficially (including Stock Options)















         Owned of Record


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