January 24, 1995


Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
1400 E. Schaaf Road
Brooklyn Heights, Ohio 44131

Gentlemen:

     This letter  agreement  (the  "Agreement")  constitutes an agreement by and
between COMERICA BANK, a Michigan banking corporation ("Bank"),  and CONTINENTAL
MANAGED PHARMACY SERVICES, INC. an Ohio corporation (the "Company"),  pertaining
to certain  loans and other  credit which Bank has made or may from time to time
hereafter  make  available  to the  Company and its  wholly-owned  subsidiaries,
CONTINENTAL PHARMACY, INC., an Ohio corporation ("CPI"),  PREFERRED RX, INC., an
Ohio corporation  ("Preferred"),  AUTOMATED  SCRIPTS,  INC., an Ohio corporation
("ASI"),  and VALLEY PHYSICIANS  SERVICES,  INC., an Ohio corporation  ("VPSI").
(CPI, Preferred, ASI and VPSI are sometimes collectively hereinafter referred to
as  the  "Subsidiaries")   (the  Company  and  the  Subsidiaries  are  sometimes
collectively hereinafter referred to as "Borrower").

     In  consideration of all present and future loans and credit made available
by Bank to Borrower,  and all present and future  liabilities,  obligations  and
indebtedness  of Borrower to Bank,  howsoever  created,  evidenced,  existing or
arising, whether direct or indirect,  absolute or contingent,  joint or several,
now  or  hereafter  existing  or  arising,  or  due  or to  become  due  (herein
collectively  called  the  "Liabilities"),  Borrower  covenants  and  agrees  as
follows:

     1. Each loan or other  extension  of credit made by Bank to or otherwise in
favor of Borrower  shall be  evidenced  by and subject to a  promissory  note or
other agreement or evidence of indebtedness  acceptable to Bank and executed and
delivered by Borrower and unto Bank (any and all notes,  instruments,  documents
and agreements at any time evidencing, governing, securing or otherwise relating
to any of the  Liabilities,  including this Agreement,  are herein  collectively
called the "Loan Documents").





Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 2


     2. Borrower hereby represents and warrants,  and such  representations  and
warranties  shall be  deemed to be  continuing  representations  and  warranties
during  the  entire  life  of  this  Agreement  and  thereafter  so  long as any
Liabilities remain outstanding:

              (a)    Each of the Company and the  Subsidiaries  is a corporation
                     duly organized and existing in good standing under the laws
                     of the State of Ohio; is duly  qualified and  authorized to
                     do business as a foreign  corporation in each  jurisdiction
                     where the  character  of its  assets  or the  nature of its
                     activities  makes  such  qualification  necessary;  has the
                     legal power and authority to own its  properties and assets
                     and to carry out its  business  as now being  conducted  in
                     each  such  jurisdiction   wherein  such  qualification  is
                     necessary. The execution,  delivery and performance of this
                     Agreement  and any and all other Loan  Documents by each of
                     the Company and the  Subsidiaries  are within its corporate
                     powers,   have  been  duly   authorized  by  all  requisite
                     corporate action,  are not in contravention of the terms of
                     each of the  Company's  and the  Subsidiaries'  Articles of
                     Incorporation  or Code of  Regulations  and are not, to the
                     Company's and the Subsidiaries'  knowledge, in violation of
                     law and do not  require  the  consent  or  approval  of any
                     governmental body, agency or authority;  and this Agreement
                     and any other  Loan  Documents  contemplated  hereby,  when
                     issued and delivered, will be valid and binding and legally
                     enforceable   against   each   of  the   Company   and  the
                     Subsidiaries in accordance with their terms.

              (b)    The execution,  delivery and  performance of this Agreement
                     and any other Loan Documents required under this Agreement,
                     and the  issuance  of this  Agreement  and such  other Loan
                     Documents by each of the Company and the Subsidiaries,  and
                     the   borrowings    contemplated   hereby,   are   not   in
                     contravention  or violation of the terms of any  indenture,
                     agreement  or  undertaking  to which  each is a party or by
                     which it or any of its  property  or assets  is bound,  and
                     will not result in the creation or  imposition  of any lien
                     or  encumbrance  of any nature  whatsoever  upon any of the
                     property  or assets  of the  Company  or the  Subsidiaries,
                     except to or in favor of Bank.




Continental Managed Pharmacy Services. Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 3


              (c)    No  litigation  or other  proceeding  before  any  court or
                     administrative  agency is pending,  or to the  knowledge of
                     the  officers  of  the  Company  or  the  Subsidiaries,  is
                     threatened against Company or the Subsidiaries, the outcome
                     of which  could  materially  impair  the  Company's  or the
                     Subsidiaries' financial condition or their ability to carry
                     on their business or their ability to pay and perform their
                     liabilities  and  obligations  hereunder  or  otherwise  in
                     respect of the Liabilities.

              (d)    There are no security interests in, or liens, mortgages, or
                     other   encumbrances   on  any  of  the  Company's  or  the
                     Subsidiaries'  property or assets,  except  those listed on
                     Schedule 1 to this Agreement or to or in favor of Bank.

              (e)    Each of the Company and the  Subsidiaries has all licenses,
                     permits and governmental  approvals  necessary to operate a
                     pharmacy and all such  licenses,  permits and approvals are
                     in full force and effect

              (f)    There exists no condition  or event which  constitutes,  or
                     with the giving of notice or the passage of time,  or both,
                     would  constitute,  an Event  of  Default  (as  hereinafter
                     defined) under any of the Liabilities.

     3. So long as any Liabilities  remain  outstanding,  Borrower covenants and
agrees that it shall:

              (a)    (i) Furnish annually to Bank, in form satisfactory to Bank,
                     and  within  ninety  (90) days after and as of the close of
                     each   fiscal   year  of  each  of  the   Company  and  the
                     Subsidiaries,  a balance sheet as of the close of each such
                     fiscal year, statements of income and retained earnings and
                     changes in financial  position for each such year, and such
                     other  comments  and  financial   details  as  are  usually
                     included in similar  reports;  (ii) furnish in form similar
                     to statements  previously  submitted to Bank, within thirty
                     (30) days  after and as of the close of each  month of each
                     fiscal  year of each of the  Company  or the  Subsidiaries,
                     financial  statements  containing  the  balance  sheets and
                     statements  of income and retained  earnings and changes in
                     financial position




Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 4


                     for the  portion of the  fiscal  year up to the end of such
                     period; and (iii) promptly furnish Bank, in form and detail
                     satisfactory  to Bank,  such other  information as Bank may
                     reasonably request from time to time. The annual statements
                     to be  furnished  to Bank  pursuant to (i) above  should be
                     prepared  on an  audited  basis  by  independent  certified
                     public  accountants  selected by Company and  acceptable to
                     Bank, and the monthly financial  statements to be furnished
                     to Bank  pursuant to (ii) above  should be  certified by an
                     authorized officer of the Company and the Subsidiaries. All
                     of  such  financial   statements   should  be  prepared  in
                     accordance with generally  accepted  accounting  principles
                     consistent with prior periods ("GAAP").

              (b)    Preserve  and keep in full  force  and  effect  each of the
                     Company's and the Subsidiaries' corporate existence in good
                     standing;  continue to conduct  and  operate  its  business
                     substantially  as  presently  conducted  and  operated  and
                     maintain  and  protect all  franchises  and trade names and
                     preserve all the  remainder of its property and assets used
                     or useful in the conduct of its  business and keep the same
                     in good repair and condition.

              (c)    Promptly  inform  Bank of the  occurrence  of any  Event of
                     Default,  or any condition or event which,  with the giving
                     of notice or the passage of time, or both, would constitute
                     an Event of  Default,  or of any  condition  or event which
                     could have a materially  adverse  effect upon the Company's
                     or  the  Subsidiaries'  business,   properties,   financial
                     condition  or  ability  to comply  with  their  obligations
                     hereunder   or   otherwise   in   respect  of  any  of  the
                     Liabilities.

              (d)    Not affirmatively pledge or mortgage any of its property or
                     assets, whether now owned or hereafter acquired, or create,
                     suffer or permit to exist, any lien or security interest or
                     encumbrance  thereon,  except  to  or  in  favor  of  Bank,
                     Foxmeyer  Drug Company  ("Foxmeyer")  or, except for leases
                     currently in place,  for leased  equipment in an amount not
                     to exceed $50,000 in the aggregate.

              (e)    Maintain in full force and effect all licenses, permits and
                     governmental approvals necessary to operate its business.




Continental Managed Pharmacy Services. Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 5


              (f)    Maintain  at  all  times  a Net  Worth  of  not  less  than
                     $4,200,000.  "Net  Worth"  shall mean the excess of (A) the
                     net book  value of the  assets  of the  Company  after  all
                     appropriate  deductions in accordance with GAAP (including,
                     without  limitation,  reserves  for  doubtful  receivables,
                     obsolescence,  depreciation and amortization), over (B) all
                     liabilities of Company.

              (g)    Maintain,  at all  times a Debt to Net  Worth  Ratio of not
                     more than 2.5 to 1.0.  "Debt to Net Worth Ratio" shall mean
                     the  ratio of (i)  total  liabilities  of the  Company,  as
                     determined in accordance with GAAP, to (ii) Net Worth.

              (h)    Maintain at all times a current  ratio of not less than 1.0
                     to 1.0. "Current Ratio" shall mean the ratio of (i) current
                     assets of the Company,  as determined  in  accordance  with
                     GAAP, to (ii) current liabilities of the Company, excluding
                     any  current  portion  of  the  Liabilities  owing  by  the
                     Borrower to Bank pursuant to the Master  Revolving Note, as
                     determined in accordance with GAAP.

              (i)    Maintain  as  of  December  31  of  each  year,  commencing
                     December 31,  1995, a Fixed Charge  Coverage for the twelve
                     (12) months then ended of at least two times. "Fixed Charge
                     Coverage"  shall be determined in accordance  with GAAP and
                     shall mean (i)  operating  income  plus  depreciation  plus
                     amortization plus interest divided by (ii) interest and the
                     current maturities of all long term debt.

              (j)    Pay the fees  incurred by Bank in  auditing  the Company in
                     connection with the Liabilities. The fees to be paid by the
                     Company  shall not exceed  $3,000 per audit and the Company
                     shall have no  obligation  to pay for more than 3 audits in
                     any calendar year period.  Notwithstanding  the  foregoing,
                     the Bank shall not be  limited in the number of  additional
                     audits it may  undertake at its own expense in any calendar
                     year period.

              (k)    Provide Bank, within thirty (30) days after the end of each
                     quarter  during the term of this  Agreement,  a  statement,
                     signed by the president or chief  financial  officer of the
                     Company,  certifying  that  each  of the  Company  and  the
                     Subsidiaries  is in compliance with the covenants set forth
                     in this Agreement.




Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 6


              (1)    Provide  Bank  promptly  such  other  data and  information
                     (financial and  otherwise) as Bank,  from time to time, may
                     reasonably require.)

     4. An "Event of  Default"  shall be deemed to have  occurred or exist under
this  Agreement  upon the  occurrence  and/or  existence of any of the following
conditions or events:

              (a)    Borrower  shall fail to pay the principal of or interest on
                     or shall  otherwise  fail to pay any other  amount owing by
                     Borrower  to Bank  under any of the  Liabilities,  and such
                     default in payment shall continue unremedied or uncured for
                     a period of five (5) days after such payment was due;

              (b)    Any  representation,  warranty,  certification or statement
                     made or deemed to have been made by  Borrower  herein or in
                     any certificate,  financial  statement or other document or
                     agreement  delivered  by Borrower  to Bank,  or by other on
                     behalf  of  Borrower,  shall  prove  to be  untrue  in  any
                     material respect;

              (c)    Borrower shall fail to observe or perform,  in any material
                     respect,  any condition,  covenant or agreement of Borrower
                     set forth  herein  (other than as provided in  subparagraph
                     (a)  above),  and,  in the  case  of  those  covenants  and
                     agreements set forth in paragraphs  3(a), (b), (e), (f) (g)
                     or (h) hereof,  such default shall  continue  unremedied or
                     uncured  for a period of thirty (30) days after the earlier
                     of the date of written  notice  thereof by Bank to Borrower
                     or the date Bank is notified,  or should have been notified
                     by  Borrower  pursuant  to  Borrower's   obligations  under
                     paragraph 3(c) of this Agreement, of such default;

              (d)    Borrower shall fail to observe or perform,  in any material
                     respect,  any condition,  covenant or agreement of Borrower
                     set  forth  in any  other  Loan  Document  (other  than  as
                     provided  in  subparagraphs  (a) above),  and such  default
                     shall  remain  unremedied  or uncured  beyond any period of
                     grace or cure, if any, provided with respect thereto; or




Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 7


              (e)    Upon the occurrence or existence of any "Default" or "Event
                     of Default",  as the case may be, which  continues  uncured
                     beyond the  expiration of any  applicable  grace period set
                     fort  in  any  other  Loan  Document   including,   without
                     limitation, the Guaranty.

     5. Upon the  occurrence  of any Event of  Default,  Bank may give notice to
Borrower declaring all outstanding Liabilities to be due and payable,  whereupon
all such Liabilities then outstanding shall immediately  become due and payable,
without further notice or demand,  and any commitment or obligation,  if any, on
the part of Bank to make loans or  otherwise  extend  credit to  Borrower  shall
immediately  terminate,  all indebtedness then outstanding under the Liabilities
shall automatically  become immediately due and payable, and any such commitment
or obligation on the part of Bank, if any, shall immediately terminate,  in each
case without notice or demand,  which are hereby  expressly  waived by Borrower.
Further,  upon the  occurrence of any Event of Default,  Bank may collect,  deal
with and dispose of all or any part of any  security in any manner  permitted or
authorized  by  the  Ohio  Uniform  Commercial  Code  or  other  applicable  law
(including  public or  private  sale) and after  deducting  expenses  (including
reasonable  attorneys'  fees and expenses),  Bank may apply the proceeds and any
deposits or credits in part or fall payment of any of the  Liabilities,  whether
due or not,  in any manner or order which Bank  elects.  Borrower  shall  remain
liable for any deficiency, which it shall pay to Bank immediately upon demand.

     6.  Notwithstanding  any other  provision  of this  Agreement or any of the
other Loan  Documents,  and without  affecting  in any manner the rights of Bank
under the other  Sections of this  Agreement,  it is understood  and agreed that
Bank shall have no obligation to advance funds to Borrower at any time under the
Loan Documents  unless and until each of the following  conditions have been and
continue to be satisfied, all in form and substance satisfactory to Bank and its
counsel:

              (a)    Absence  of Legal  Actions.  No legal  action,  proceeding,
                     investigation,  regulation or  legislation  shall have been
                     instituted,   threatened  or  proposed  before  any  court,
                     governmental  agency or legislative body which would have a
                     material  adverse  effect  on  the  business,  property  or
                     condition  of  the  Borrower  or  which  seeks  to  enjoin,
                     restrain,  or prohibit,  or to obtain damages in respect of
                     this  Agreement  or any of the other Loan  Documents or the
                     consummation  of the  transactions  contemplated  hereby or
                     thereby.




Continental Managed Pharmacy Services. Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 8


              (b)    Representations  and Warranties.  The  representations  and
                     warranties  of  Borrower in this  Agreement  and any of the
                     other Loan  Documents  are true and correct in all material
                     respects and no Event of Default or condition  which,  with
                     notice,  lapse of time or both would constitute an Event of
                     Default then exists.

              (c)    Delivery  of  Documents.   Bank  shall  have  received  the
                     following  documents,  each  to be in  form  and  substance
                     satisfactory to Bank and its counsel:

                     (i)    The Master Revolving Note duly executed by Borrower;

                     (ii)   The  Advance  Formula  Agreement  duly  executed  by
                            Borrower;

                     (iii)  The Variable Rate  Installment Note duly executed by
                            Borrower;

                     (iv)   The Guaranty duly  executed by Michael R.  Erlenbach
                            (the "Guarantor"),  and the Guarantor shall not have
                            terminated the Guaranty;

                     (v)    The Security Agreement  (Equipment) and the Security
                            Agreement  (Accounts and Chattel  Paper) in form and
                            substance  acceptable  to  Bank,  duly  executed  by
                            Borrower;

                     (vi)   Intercreditor  Agreement  of  Foxmeyer  in form  and
                            substance acceptable to Bank;

                     (vii)  The written  opinion of counsel to Borrower  and the
                            Guarantor  as to the  transactions  contemplated  by
                            this Agreement in form and substance satisfactory to
                            Bank and its counsel;

                     (viii) Copies of all filing receipts or acknowledgements or
                            other  oral  or  written   evidence  issued  by  any
                            governmental  authority  to  evidence  any filing or
                            recordation




Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 9


                            necessary  to  perfect  the  liens  of  Bank  in the
                            Collateral and evidence in a form acceptable to Bank
                            that such liens  constitute valid and first priority
                            perfected liens;

                     (ix)   Certified   copies   of  the   Company's   and   the
                            Subsidiaries'   casualty  and  liability   insurance
                            policies  evidencing  the existence of the insurance
                            coverage  required  pursuant to the Loan  Documents,
                            together with all appropriate  endorsements  thereto
                            naming Bank as a loss payee and  additional  insured
                            in form and substance satisfactory to Bank;

                     (x)    A  Certificate  of  the  Secretary  or an  Assistant
                            Secretary   of   each   of  the   Company   and  the
                            Subsidiaries,  dated as of the date  Bank  makes its
                            initial advance of loans pursuant to this Agreement,
                            certifying  (a) that attached  thereto is a true and
                            complete copy of the Articles of  Incorporation  and
                            Code of  Regulations  of each of the Company and the
                            Subsidiaries,  as in  effect  on the  date  of  such
                            certification,  (b) that attached  thereto is a true
                            and   complete   copy   of   resolutions,   in  form
                            satisfactory  to  Bank,  adopted  by  the  Board  of
                            Directors   of   each   of  the   Company   and  the
                            Subsidiaries,  authorizing  the execution,  delivery
                            and  performance  of this  Agreement and each of the
                            other Loan  Documents to which it is a party and the
                            consummation of the transactions contemplated hereby
                            and  thereby  and  that  said  resolutions  are  all
                            resolutions  adopted  with  respect to said  subject
                            matter and  remain in fall force and effect  without
                            modification,  and  (c)  as to  the  incumbency  and
                            genuineness of the signature of each officer of each
                            of the Company and the  Subsidiaries  executing this
                            Agreement and the other Loan Documents to which each
                            of the Company and the Subsidiaries is a party;

                     (xi)   Good  standing  certificate  for each of the Company
                            and the  Subsidiaries  issued  by the  Secretary  of
                            State of Ohio;




Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 10


                     (xii)  A  certificate  signed  by the  President  and Chief
                            Executive  Officer  of each of the  Company  and the
                            Subsidiaries and dated as of the date Bank makes its
                            initial advance of loans pursuant to this Agreement,
                            stating that (a) the  representations and warranties
                            set forth in  Section 2 of this  Agreement  are true
                            and correct on and as of such date,  (b) each of the
                            Company  and the  Subsidiaries  is on  such  date in
                            compliance  with all the  terms and  provisions  set
                            forth  in this  Agreement,  and (c) on such  date no
                            event or  condition  has  occurred or is  continuing
                            which with the giving of notice,  the lapse of time,
                            or both, would constitute an Event of Default;

                     (xiii) Delivery by the  Company of a check  payable to Bank
                            in an amount  equal to the sum of the fees  incurred
                            by Bank for legal and audit  services in  connection
                            with  this  transaction  and a  Closing  Fee  in the
                            amount  of  $32,000,   the  receipt  of  $10,000  in
                            prepayment of these sums is hereby acknowledged;

                     (xiv)  Written  instructions  from each of the  Company and
                            the  Subsidiaries   directing  the  disbursement  of
                            proceeds   of  the  loans  made   pursuant  to  this
                            Agreement; and

                     (xv)   Such other  agreements,  instruments  and  documents
                            including, without limitation, assignments, security
                            agreements,  mortgages,  deeds  of  trust,  pledges,
                            guaranties  and consents,  which Bank may require to
                            be executed in connection with this Agreement

     7. Provided Borrower has delivered to Bank a duly executed telephone notice
authorization  in the Bank's  standard  form,  Borrower  may  request an advance
pursuant to the Master Revolving Note by telephone  request,  in accordance with
such telephone notice  authorization.  Each such request for an advance shall be
made to Bank by 2:00 p.m. on the  proposed  date of advance.  Once  delivered to
Bank,  such request for an advance shall not be revocable by Borrower.  The Bank
may require  the  Borrower to execute a written  request  for  advances,  in the
Bank's  standard form, as a condition to advances if, on the basis of reasonable
considerations, the Bank determines that written documentation regarding the




Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24,1995
Page 11


request of the Borrower for advances is  appropriate.  Subject  otherwise to the
terms hereof and the Loan  Documents,  Bank shall make available to Borrower the
amount of the advance so requested  not later than 4:00 p.m.  (Detroit  time) on
the date of such  advances by credit to an account of Borrower  maintained  with
Bank or to such other account or third party as Borrower may reasonably request.

     8. No  forbearance  on the part of Bank in  enforcing  any of its rights or
remedies  under this  Agreement  or any other Loan  Document,  nor any  renewal,
extension or rearrangement of any payment or covenant to be made or performed by
Borrower hereunder or any such other Loan Document, shall constitute a waiver of
any of the terms of this Agreement or such Loan Document or of any such right or
remedy.

     9. This  Agreement  shall be  governed  by and  construed  and  enforced in
accordance  with the laws of the State of Ohio.  Notwithstanding  the foregoing,
the parties  acknowledge that the Liabilities created in and secured by the Loan
Documents  were  approved  and made and the  proceeds  of the  loans  have  been
disbursed in the State of Michigan

     10. All  covenants,  agreements,  representations  and  warranties  made in
connection  with this Agreement and any other Loan  Documents  shall survive the
borrowing  hereunder or thereunder until such time as all of the Liabilities are
paid in full  and  shall  be  deemed  to have  been  relied  upon by  Bank.  All
statements  contained in any certificate or other document  delivered to Bank at
any time by or on behalf of the  Company  or the  Subsidiaries  pursuant  hereto
shall  constitute   representations  and  warranties  by  the  Company  and  the
Subsidiaries.

     11.  Borrower  agrees that it will pay all costs and expenses in connection
with the preparation of this Agreement and any other Loan Documents contemplated
hereby,   including,   without  limitation,   reasonable   attorneys'  fees  and
disbursements of counsel for the Bank.

     12.  BORROWER  AND BANK  ACKNOWLEDGE  THAT THE  RIGHT TO TRIAL BY JURY IS A
CONSTITUTIONAL  ONE, BUT THAT IT MAY BE WAIVED. EACH PARTY, AFTER CONSULTING (OR
HAVING HAD THE  OPPORTUNITY TO CONSULT) WITH COUNSEL OF THEIR CHOICE,  KNOWINGLY
AND VOLUNTARILY,  AND FOR THEIR MUTUAL BENEFIT, WAIVE ANY RIGHT TO TRIAL BY JURY
IN THE EVENT OF LITIGATION  REGARDING TIE  PERFORMANCE OR ENFORCEMENT  OF, OR IN
ANY WAY RELATED TO, THIS AGREEMENT OR THE LIABILITIES.




Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 12


     13. This Agreement  shall inure to the benefit of and shall be binding upon
the  parties  hereto and their  respective  successors  and  assigns;  provided,
however,  that  Borrower  shall not  assign,  or  transfer  any of its rights or
obligations  hereunder or otherwise in respect of any of the Liabilities without
the prior written consent of Bank.

     If the  foregoing  is  acceptable  to  Company,  please  indicate  with the
authorized signature of Company as provided below.

                                        Very truly yours,

                                        COMERICA BANK

                                        By: /s/ JAMES P. HANSON

                                        Its: Vice President


ACCEPTED AND AGREED:


CONTINENTAL MANAGED PHARMACY
SERVICES, INC.

By: /s/ MICHAEL R. ERLENBACH

Its: Executive Vice President



CONTINENTAL PHARMACY, INC.

By: /s/ MICHAEL R. ERLENBACH

Its: Executive Vice President

Dated: 1/24/95




Continental Managed Pharmacy Services, Inc.
Continental Pharmacy, Inc.
Preferred RX, Inc.
Automated Scripts, Inc.
Valley Physicians Services, Inc.
January 24, 1995
Page 13


PREFERRED RX, INC.

By: /s/ MICHAEL R. ERLENBACH

Its: President

Dated: 1/24/95


AUTOMATED SCRIPTS, INC.

By: /s/ MICHAEL R. ERLENBACH

Its: President

Dated: 1/24/95


VALLEY PHYSICIANS SERVICES, INC.

By: /s/ MICHAEL R. ERLENBACH

Its: Vice President

Dated: 1/24/95