FIRST LEASE AMENDMENT

         THIS FIRST LEASE AMENDMENT (the  "Amendment") is executed this 24th day
of February  2000 by and  between  DUKE-WEEKS  REALTY  LIMITED  PARTNERSHIP,  an
Indiana  limited  partnership  ("Landlord"),  and CONTINENTAL  MANAGED  PHARMACY
SERVICES, INC., an Ohio corporation ("Tenant").

         WHEREAS,  Landlord  and  Tenant  have  entered  into  a  certain  lease
contemporaneously  with this  Amendment  (collectively,  the  "Lease"),  whereby
Tenant has leased from landlord  certain  premises  consisting of  approximately
74,780 rentable square feet (the "Leased Premises") located in Building No. 132,
2787 Charter  Street,  Columbus,  Ohio 43228,  located in Westbelt West Commerce
Center; and

         WHEREAS,   Landlord  and  Tenant  desire  to   incorporate   additional
provisions and to make certain  modifications in the Lease;

         NOW, THEREFORE,  in consideration of the foregoing premises, the mutual
covenants  herein  contained  and each act  performed  hereunder by the parties,
Landlord and Tenant hereby enter into this Amendment.

         1.  Amendment of Section  1.01L.  Basic Lease  Provisions.  Address for
Notices.  Section  1.01L of the Lease is hereby  amended  by  incorporating  the
following after the mailing address for Guarantor:

Guarantor's Lender:           General Electric Capital Corporation
                              Attention:  MIM Account Manager
                              2325 Lakeview Parkway, Suite 700
                              Alpharetta, GA  30004-1976

                              With a copy to:

                              General Electric Capital Corporation
                              Attention: Corporate Counsel-Commercial Finance
                              201 High Ridge Road
                              Stamford, Connecticut  06927-5100

         2. Amendment of Section 16.03. Guaranty.  Section 16.03 of the Lease is
hereby  amended by  incorporating  the  following as a second  paragraph to this
section:  Landlord agrees to send (at the address  specified in Section 1.01L of
the Lease) General Electric Capital  Corporation,  (together with its successors
and assigns "Lender"),  as agent for Guarantor's  primary lender,  copies of all
default notices required to be given to Tenant under the Lease and copies of all
notices  required to be given to  Guarantor  under the  Guaranty and at the same
time such notices are to be given to Tenant and/or Guarantor under the Lease and
Guaranty,  respectively.  Landlord and Tenant further agree that with respect to
any  amendment  of the Lease  which  increases  Tenant's  Minimum  Annual  Rent,
increases  Tenant's  Additional Rent, extends the Lease Term, expands the Leased
Premises,  or accelerates the payment or amortization of Tenant's Minimum Annual
Rent,   Landlord   and  Tenant   shall   secure  the   consent  of  the  Lender.
Notwithstanding  the  foregoing,  Landlord  shall have no  obligation to provide
Lender with notice or seek  Lender's  consent,  with respect to any issues other
than as  expressly  contemplated  by  Section  16.03 of the  Lease or  expressly
contemplated in the Guaranty.

         3.  Amendment of Section  16.15 Early  Occupancy.  Section 16.15 of the
Lease is hereby amended to provide that Tenant may take possession of the Leased
Premises on April 11, 2000 for the purpose of installing Tenant's racking in the
Leased  Premises  and Tenant may take  possession  and  occupancy  of the Leased
Premises for purposes of conducting  its business  operations  within the Leased
Premises on April 26,  2000.  All other terms and  conditions  stated in Section
16.15 of the Lease shall remain unchanged.

         4.  Amendment of Article 16.  Article 16 of the Lease is hereby amended
by adding the  following  sections:  Section 16.19  Miscellaneous.  Landlord and
Tenant  hereby  acknowledge  and  agree  that any sums due,  performance  costs,
financial  obligation,  damages or liability  arising from  Tenant's  failure to
perform  any of the terms or  conditions  defined in this Lease shall be paid to
Landlord as additional rent under the Lease.

         5. Tenant's Representations and Warranties.  The undersigned represents
and warrants to Landlord that (i) Tenant is duly organized, validly existing and
in good  standing  in  accordance  with the laws of the state under which it was
organized;  (ii)  all  action  necessary  to  authorize  the  execution  of this
Amendment  has been  taken by Tenant;  and (iii) the  individual  executing  and
delivering  this Amendment on behalf of Tenant has been authorized to do so, and
such execution and delivery shall bind Tenant.  Tenant,  at Landlord's  request,
shall provide Landlord with evidence of such authority.

         6.  Examination  of  Amendment.   Submission  of  this  instrument  for
examination  or signature to Tenant does not constitute a reservation or option,
and it is not  effective  until  execution by and delivery to both  Landlord and
Tenant.

         7. Definitions.  Except as otherwise  provided herein,  the capitalized
terms used in this Amendment shall have the definitions set forth in the Lease.

         8. Incorporation.  This Amendment shall be incorporated into and made a
part of the Lease,  and all  provisions of the Lease not  expressly  modified or
amended hereby shall remain in full force and effect.  IN WITNESS  WHEREOF,  the
parties  have  caused  this  Amendment  to be executed on the day and year first
written above. LANDLORD:

                               DUKE-WEEKS REALTY LIMITED PARTNERSHIP,
                               an Indiana limited partnership

                               By:   Duke-Weeks Realty Corporation,
                                     its General Partner

                               By: /s/ J. Kurt Dehner
                                  ----------------------
                                   J. Kurt Dehner
                                   Senior Vice-President
                                   Columbus Industrial


                                TENANT:

                                CONTINENTAL MANAGED PHARMACY SERVICES, INC.,
                                an Ohio corporation

                                By:  /s/  Russel J. Corvese
                                     -----------------------
                                Printed: Russel J. Corvese

                                Title: Senior Vice President