MANUFACTURING AND SALES AGREEMENT

     This  Manufacturing  and Sales  Agreement  (this  "Agreement")  is made and
entered into as of July 11, 1997 by and between J.B. Williams  Company,  Inc., a
Delaware  corporation,  with its offices at 65 Harristown  Road,  Glen Rock, New
Jersey  07452   ("Williams"),   and  Summa  Rx  Laboratories  Inc.,  a  Delaware
corporation,  with its  offices  at 2940 FM 3028,  Mineral  Wells,  Texas  76067
("SUMMA"), for the purposes set forth hereafter.

     WHEREAS, SUMMA has the non-exclusive right to manufacture and sell patented
zinc  acetate  products  that were  invented by George Eby and for which  United
States Letters of Patent (the "Patents") have been issued; and

     WHEREAS,  SUMMA wishes to  manufacture  and sell zinc  acetate  lozenges to
Williams,  and Williams wishes to purchase such products from SUMMA,  for resale
in the  jurisdictions,  regions  or  territories  presently  known as the United
States of  America  (including  its  territories  and  possessions),  Greenland,
Canada, Mexico, Puerto Rico, the Bahamas,  Jamaica, Bermuda, the Virgin Islands,
Haiti, the Dominican Republic,  Trinidad and Tobago,  Netherlands Antilles,  and
all other islands, countries, jurisdictions, territories and possessions located
in the  Caribbean Sea whether or not  specifically  named herein other than Cuba
and South American  jurisdictions (the  "Territory"),  pursuant to the terms and
conditions set out in this Agreement; and

     WHEREAS, SUMMA has the exclusive right to use the trademark "ColdCure(TM)",
and all other  marks,  logos  and other  intellectual  property  rights  related
thereto or derivative thereof  including,  without  limitation,  the designation
"C/C"  or any  designation  similar  thereto,  used  on  zinc  acetate  products
manufactured by SUMMA (collectively, the "Trademarks"); and

     WHEREAS,  Williams  wishes to obtain the exclusive  right to the use of the
Trademarks  in the  Territory  and  SUMMA  is  willing  to grant  Williams  such
exclusive use pursuant to the terms and conditions set out in this Agreement.

     NOW,  THEREFORE,  for and in  consideration  of the  mutual  covenants  and
agreements  set out in this  Agreement,  the  sufficiency  of which is  mutually
acknowledged  by Williams and SUMMA and is evidenced by their  execution of this
Agreement, the parties do agree as follows:



                                                                               2


     1.   GENERAL.

          SUMMA  agrees to  manufacture  and sell  zinc  acetate  lozenges  (the
"Products"), in the packaging and quantities described on Exhibit A, and in such
other form,  packaging and/or quantities as the Products may be manufactured and
packaged by SUMMA during the term of this Agreement  including any extensions or
renewals  hereof,  to Williams  pursuant to the terms and  provisions set out in
this  Agreement  for  marketing,  distribution  and  sale  by  Williams  in  the
Territory.  Williams  agrees to purchase the Products from SUMMA pursuant to the
terms and provisions set out in this Agreement for marketing,  distribution  and
sale in the Territory.

     2.   MANUFACTURE, PACKAGING AND DELIVERY OF THE PRODUCTS.

          A. SUMMA agrees to manufacture the Products for Williams  according to
the  specifications  as are set out in the Patents and according to the formulas
and quality standards developed by Mr. George Eby and SUMMA  (collectively,  the
"Product  Specifications")  utilizing current Good Manufacturing  Practices,  as
such term is defined in the Federal Food, Drug and Cosmetic Act, as amended (the
"FD&C Act"). Within five (5) business days following the date of this Agreement,
SUMMA  agrees to deliver  to  Williams a full and  complete  description  of the
Product Specifications.  Thereafter during the term of this Agreement (including
any renewals or extensions  thereof),  SUMMA shall  provide  Williams with sixty
(60) days advance  written  notice of any changes to the Product  Specifications
proposed by SUMMA. For purposes of this Agreement, the term "business day" shall
mean a day during  which SUMMA is  conducting  its normal  business  operations,
regardless of weekends and holidays, as the case may be.

          B.  Subject  to  any  superior  rights  of  American  Longevity,   LLC
("American"),  SUMMA agrees that Williams  shall have a first right to negotiate
the purchase of products (other than the Products) manufactured according to new
formulas  developed  hereafter  by  SUMMA  for  distribution  and  sale  in  the
Territory.  That right shall exist for sixty (60) days after  SUMMA's  notice to
Williams of the  availability of a new product formula.  If Williams,  after the
expiration of that period of time, does not take any action to inform SUMMA that
it wishes to have the right to the  formula,  then SUMMA shall have the right to
offer the formula to any of its other customers.

          C. Upon  mutual  written  agreement,  SUMMA and  Williams  may add and
delete other products to or from Exhibit A from time to time hereafter.

          D. SUMMA warrants that the Products sold to Williams as of the date of
each shipment  shall not be  adulterated  within the meaning of the FD&C Act and
will be goods that may be introduced into interstate  commerce under  applicable
law.




                                                                               3


          E. SUMMA  warrants to replace the Products to the extent that the same
do not conform to the specifications  referred to in Paragraphs 2A and 2D above.
In  addition  to and  without  limiting  the rights  and  remedies  of  Williams
contemplated  and permitted by Paragraph 13A of this  Agreement,  REPLACEMENT OF
PRODUCTS SHALL BE WILLIAMS'  EXCLUSIVE  REMEDY,  AND THE WARRANTY MADE HEREIN IS
EXPRESSLY  MADE IN LIEU OF ANY AND ALL  OTHER  WARRANTIES,  EXPRESS  OR  IMPLIED
(EXCEPT AS TO TITLE),  INCLUDING  WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.

          F.  Williams  shall make all claims and requests for  replacements  or
returns of Products as soon as reasonably  possible following  Williams' receipt
of each shipment. Williams' claims or requests for replacements or returns shall
be deemed waived if not received by SUMMA within forty (40) days after Williams'
receipt of a shipment.

          G. If  delivery  of a shipment  is delayed  for  reasons  attributable
solely to Williams or its  shippers,  or their  respective  agents,  storage and
other  additional  costs will be charged to Williams and the Products will be at
Williams' risk from the date of the commencement of the delay.

          H.  Packaging of the Products may  initially be done by a third party,
and thereafter  shall be done by SUMMA.  The description of the size,  shape and
other  specifications  of the  packaging of the Products  shall be agreed to and
amended,  from time to time,  upon the written  agreement of SUMMA and Williams,
hereafter.

          I. Content and regulatory  notice and  disclosures  on packaging,  and
form of labeling of the Products,  shall be the sole responsibility of Williams.
SUMMA  shall  provide  Williams  with the  specific  list of  ingredients  to be
included on the labeling.  Williams  shall pay all costs of additional art work,
dies,  plates,  etc., that may be incurred by SUMMA, and for all labels that may
be rendered  unusable by reason of  regulatory  changes or changes  requested by
Williams.

          J.  Delivery of,  transfer of risk of loss and passage of title of the
Products  shall be deemed to have been made to  Williams  upon  delivery of each
shipment of the Products to Williams' shipper at SUMMA's shipping dock,  Mineral
Wells, Texas.

          K. SUMMA shall ship in accordance  with  Williams'  instructions,  and
Williams shall be responsible  for insuring its shipments.  Where Williams gives
no  shipping  instructions,  or  where  SUMMA  deems  such  instructions  to  be
unsuitable,  SUMMA  reserves  the right to ship by the most  appropriate  method
provided  that any shipper so selected  for Williams is retained by or on behalf
of Williams  and  Williams is given  adequate  advance  notice of the shipper to
obtain insurance in respect of such shipment.




                                                                               4


          L. If at any time  Williams  determines  that  SUMMA has  manufactured
Products  that do not meet the standard of quality  required by this  Agreement,
then  Williams  may request  that the  Products in question be  submitted  to an
independent  testing  laboratory to be tested.  The decision of such  laboratory
shall be binding as to whether or not the Products in question were manufactured
to the standard of quality  required by this Agreement.  The testing  laboratory
shall be selected by both  parties,  or, in the absence of an  agreement  within
sixty  (60)  days,  then it shall be a  laboratory  appointed  by an  arbitrator
pursuant to Paragraph 14 below. The costs of the arbitrator and laboratory tests
will be borne by the party  whose  analysis  was in error as  determined  by the
arbitrator.

          M. In the event of any inspection of SUMMA's operations, facilities or
records conducted by any governmental  authority,  that in any manner relates to
the  Products,  then SUMMA will advise  Williams of such  inspection  (including
information  as to the  nature,  extent,  and  scope  thereof)  as soon as SUMMA
becomes  aware that the same has taken or will take place.  In  addition,  SUMMA
will promptly provide Williams copies of all governmental  reports regarding the
Products.

          N. After the date of this  Agreement,  SUMMA  agrees to develop  other
products for Williams as Williams may request from time to time. Williams agrees
to pay SUMMA its costs of development of any such additional  product(s).  Prior
to any work being done to develop a new product,  Williams and SUMMA shall first
agree in  writing as to the  amount of costs  that  Williams  shall pay for such
product development.

          O. Within five (5)  business  days from the date of  execution of this
Agreement,  SUMMA agrees to enter into a valid and enforceable  amendment to the
Manufacturing   and  Sales   Agreement,   dated  May  16,  1997  (the  "American
Agreement"),  by and between SUMMA and  American,  to exclude from the territory
set forth in the American Agreement the Territory as defined herein effective as
of the date of this  Agreement and  continuing  thereafter  until  expiration or
termination of this Agreement.  SUMMA  acknowledges that its satisfaction of its
obligations  under this  Paragraph  2O are a material  inducement  to  William's
entering into this Agreement.

     3.   ORDERS, SALES AND PAYMENT FOR THE PRODUCTS; PAYMENTS TO AMERICAN.

          A. Williams shall deliver its purchase orders for Products to SUMMA at
SUMMA's  offices set forth on the first page of this  Agreement.  Such  purchase
orders shall state the quantity,  packaging  and the delivery  schedules for the
Products being ordered.

          B.  Simultaneously  with its delivery of a purchase  order pursuant to
the preceding Paragraph, Williams shall pay SUMMA a deposit equal to one half of
the total purchase price of Products then being ordered or Five Hundred Thousand
Dollars


                                                                               5


($500,000.00),  whichever sum is the lesser.  Payment of the balance due on each
such purchase order shall be made within ten (10) business days from the date of
the notice  that such  Products  have been  delivered  to  Williams'  shipper as
provided in Paragraph 2J above. SUMMA shall provide Williams with notice of each
such  delivery  date.  All  payments  shall  be made by wire  transfer  of funds
according to written instructions given by SUMMA to Williams,  from time to time
hereafter.

          C. The prices to be paid by Williams for the Products  shall be as set
forth on Exhibit  A. In the event  SUMMA's  costs to  manufacture  the  Products
increases  or  decreases  more than five  percent  (5%),  SUMMA shall adjust the
prices for the Products quarterly in an amount equal to its actual cost increase
or decrease  subject to the terms of this  Agreement.  Any  increase in overhead
costs shall not exceed the amount of the cumulative  percentage  increase in the
Consumer  Price  Index  during  the  period  commencing  from  the  date of this
Agreement  or the period  commencing  with the most  recent  increase in SUMMA's
overhead costs hereunder, if any, and ending with the date of determination. Any
price  increase based on increase in labor costs shall not exceed the cumulative
percentage  increase in the Department of Labor Bureau of  Statistics,  Producer
Price Index, for the commodity code of the Products,  for the period  commencing
from the date of this  Agreement or the period  commencing  with the most recent
increase in SUMMA's labor costs  hereunder,  if any, and ending with the date of
determination.  SUMMA shall provide Williams sixty (60)days written notice prior
to any such price adjustment.

          D.  The  price  to be paid by  Williams  to SUMMA  per  tablet  of the
Products, or package/container of Products, shall be in writing and set forth on
the individual Product specification sheets that make up Exhibit A.

          E. The cost  increases for the Products  contemplated  by Paragraph 3C
shall be determined in accordance  with such  paragraph  and, in addition to the
foregoing,  shall be reasonable  and subject to the prior  approval of Williams,
which approval shall not be unreasonably  withheld or delayed.  In the event the
parties cannot agree on the amount of such  increased or decreased  costs within
thirty (30) days following Williams' receipt of written notice from SUMMA of the
proposed  costs as provided in Paragraph  3C, then the matter shall be submitted
to arbitration in accordance with Paragraph 14 of this Agreement. The reasonable
costs,  as  determined  by any  arbitrator as provided in Paragraph 14, shall be
effective  sixty (60) days  following  the date of the costs  notice from Summa.
Williams  shall have the right to review all such  documents  related to SUMMA's
costs as herein contemplated at SUMMA's offices during reasonable business hours
and at Williams'  own expense upon not less than twenty (20) days prior  written
notice to SUMMA.

          F.  Williams  shall  purchase  a minimum  annual  volume of Fifty Five
Million (55,000,000) tablets of the Products for the first two (2) years of this
Agreement.


                                                                               6


Thereafter  and for the remainder of this  Agreement  (including any renewals or
extensions of the term hereof),  Williams shall purchase a minimum annual volume
of Ninety Million  (90,000,000)  tablets of the Products.  In the event Williams
fails to purchase the minimum annual volume of the Products in any year pursuant
to this  Paragraph  3F,  Williams  shall pay to SUMMA  that  amount  of  dollars
determined  by  multiplying  $7.25 for each 1,000  tablets,  times the number of
tablets  below such annual  minimum that Williams  failed to purchase.  Any such
payment shall be made within sixty (60) days following  each annual  anniversary
date of this  Agreement  during the term of this  Agreement or any extensions or
renewals hereof.

          G. Upon  execution of this  Agreement,  Williams shall provide SUMMA a
twelve (12) month  manufacture,  delivery and purchase  forecast  schedule  (the
"Forecast  Schedule")  for each of the Products that is a part of Exhibit A, and
the Forecast  Schedule and monthly  amendments  thereto  shall be a part of this
Agreement.  The  Forecast  Schedule  shall  list the names of the  Products  and
quantity of units to be  manufactured  by SUMMA for the period listed.  Williams
shall amend and update the Forecast  Schedule in writing on a monthly basis. The
quantity of units of the Products listed for manufacture and delivery during the
first three (3) months of the Forecast Schedule shall be Williams' firm purchase
orders for such  Products.  Thereafter,  following  the  expiration of the first
month of each such three month  period,  the quantity of the Products  listed on
the Forecast  Schedule for manufacture and sale during each succeeding three (3)
month period shall be Williams'  firm purchase  orders for such Products  during
that three month period.

          H.  Williams  shall  pay and be  responsible  for the  payment  of all
applicable sales, use,  wholesale,  gross receipts and similar taxes, duties and
tariffs  solely  in  respect  of its  marketing,  distribution  and  sale of the
Products in the Territory.

          I. SUMMA agrees that,  within ten (10)  business  days  following  its
receipt of full payment of the Products  from  Williams as provided in Paragraph
3B above,  it shall pay to American the amounts of the Product Prices payable to
American set forth in Exhibit A annexed  hereto,  to the address of American set
forth in the American Agreement .

     4.   EXCLUSIVE RIGHT TO USE OF THE TRADEMARKS.

          A. During the term of this  Agreement,  and any renewals or extensions
hereof,  SUMMA grants to Williams the exclusive  right to use the Trademarks for
its sale of the Products within the Territory. Following the termination of this
Agreement, Williams may continue to sell previously purchased Products under the
Trademarks as is provided in Paragraph 6C. However, Williams Recognizes that the
Trademarks are being or have been  registered in the United  States,  Canada and
Mexico,  and Williams  agrees that its use in the other nations in the Territory
will be at its own risk. With respect to any


                                                                               7


registrations  of the Trademarks in such other  nations,  SUMMA shall cause such
registrations  to be applied for and prosecuted fully at the request of Williams
subject to the prior agreement of the parties as to the payment of the costs and
expenses  associated  therewith.  SUMMA  agrees  that  it will  promptly  inform
Williams,  and will promptly provide Williams with copies of all correspondence,
reports and other materials, relating to such registrations as they are received
or are otherwise communicated to SUMMA.

          B.  Williams  shall  maintain  its  exclusive  right to the use of the
Trademarks so long as it shall satisfy its minimum purchase  obligations for the
Products as set forth in Paragraph 3F of this Agreement.

          C.  Williams  shall have the right to use such other brand names as it
may develop from time to time, so long as such other names are not similar to or
are such as they may cause  confusion with such other brand names that are owned
or used by SUMMA for sale of zinc based  products.  In the event  that  Williams
shall use a name that in the reasonable opinion of SUMMA is similar to or causes
confusion with the names of other zinc based  products sold by SUMMA,  Williams,
upon  receipt of a notice from SUMMA,  shall cease using that product name until
the dispute as to name is resolved according to this Agreement.

     5.   TERM.

          A.  Subject to the  provisions  herein for earlier  termination,  this
Agreement  shall be  effective  on of the date  first set forth  above and shall
continue  in full force and effect for a period of five (5) years (the  "Initial
Term"), unless sooner (as herein permitted) terminated,  and shall automatically
renew for  unlimited  consecutive  five (5) year  terms  during  the life of the
Patents  (including any new patents or extensions of the Patents insofar as they
relate to or are derivative of the Patents,  and Summa has manufacturing  rights
in respect of the products  covered  thereby)  (each a  "Consecutive  Term") if,
during the Initial Term and each such Consecutive  Term,  Williams has satisfied
its minimum  purchase  obligations for the Products as set forth in Paragraph 3F
of this  Agreement.  The amount of such  purchases  shall be  determined  by the
parties at least sixty (60) days prior to the expiration of the Initial Term and
each  Consecutive  Term and shall include  Williams'  firm  purchase  orders for
Products as set forth in the in Forecast  Schedule  covering the three (3) month
period prior to  expiration  of the Initial Term or such  Consecutive  Term,  as
applicable.  If such  purchase  minimum has not been met by Williams  during the
Initial Term or any such Consecutive Term, then this Agreement may be terminated
by written  notice from either party prior to the expiration  thereof,  in which
case this  Agreement  shall  terminate on  expiration of the Initial Term or the
applicable  Consecutive  Term  unless the  parties  shall  otherwise  agree in a
writing signed by Williams and SUMMA.




                                                                               8


     6.   TERMINATION.

          A.   Either party may terminate this Agreement  forthwith by notice in
writing:

               (i) if the other of them is in material  breach of this Agreement
provided  that  notice of  termination  may only be given if the other party has
failed to remedy the breach  within thirty (30) days of the receipt of a request
in  writing  from the party not in breach to  remedy  the  breach  such  request
indicating  that failure to remedy the breach may result in  termination of this
Agreement; or

               (ii) if the other of them shall  become  insolvent or seek relief
under any bankruptcy, debtor relief or similar law or if any proceedings against
them under any such law remains  stayed for a period of thirty (30)  consecutive
days.

          B.  Williams may terminate this Agreement forwith by notice in writing
in the event that the Patents are (i)  invalidated by a final and  nonappealable
order entered by a court of competent  jurisdiction  or the United States Patent
and  Trademark  Office  and/or  (ii) the  subject  matter of any claim,  action,
lawsuit,  investigation,  arbitration or other legal  proceeding  brought by any
person or entity  challenging the validity of the Patents and/or  asserting that
the use of the Patents infringes the intellectual property rights of such person
or entity or any other person or entity,  and  Williams,  based on the advice of
patent counsel and with prior consultation with SUMMA, has determined that there
is a reasonable basis for such challenge or assertion.

          C. The termination of this Agreement, however arising, will be without
prejudice to the rights and duties of either party accrued prior to termination.
Any  termination  of this Agreement by Williams as permitted in this Paragraph 6
and elsewhere in this  Agreement  shall fully  terminate and shall fully relieve
Williams of any annual or other minimum payment  obligations for the Products or
the Trademarks as set forth in Paragraphs 3F and 4B of this Agreement  after the
date of such  termination that would have otherwise been payable during the term
of this  Agreement  or any  renewals  or  extensions  thereof.  Conversely,  any
termination  of this Agreement  shall not relieve  Williams of its obligation to
pay  SUMMA  under  the  provisions  of  Paragraph  3G  through  the date of such
termination.

          D. After the date of  termination  of this  Agreement,  Williams  will
forthwith cease to solicit additional orders for the Products.  SUMMA shall fill
those orders for which it has  received  full payment  prior to  termination  or
within thirty (30) days  thereafter.  Williams  shall be able to sell all of the
Products in its inventory  during the one (1) year period  following the date of
such termination.  After such a termination,  SUMMA shall have the right to sell
the  Products to Williams'  customers,  and Williams  shall  provide  SUMMA with
detailed information regarding names and contacts with such customers.




                                                                               9


          E. In the event of the  bankruptcy  of Williams  or similar  condition
that renders it impossible for Williams to timely pay for the Products, Williams
hereby grants to SUMMA a secured interest in and to the Products  purchased from
SUMMA and the proceeds to be received from the sale thereof to secure payment of
the  Products.  SUMMA  shall be treated as a secured  party in  relation  to the
unpaid  amount due SUMMA,  and SUMMA  shall  have the  option to  terminate  all
additional shipment of goods and products that may be remaining.

     7.   NON-CONVEYANCE OF RIGHTS.

          A.  Except as is provided in this  Agreement,  SUMMA has not  granted,
given, assigned or transferred in any manner whatsoever to Williams the right to
give, grant, sell, transfer,  assign,  trade, license, or authorize the right to
give,  grant,  sell,  transfer,  assign,  trade  or  license  the  Patents,  the
Trademarks or any other trademarks to any other person or entity.

     8.   REPRESENTATIONS AND WARRANTIES OF WILLIAMS.

     Williams represents and warrants to SUMMA as follows:

          A. That  Williams is not the  subject of any  lawsuit or other  action
that would render this Agreement ineffective.

          B.  Williams has full power,  authority and legal right to execute and
deliver, and to perform its obligations under this Agreement,  and has taken all
necessary  action to authorize the execution,  delivery and  performance of this
Agreement.  This Agreement has been duly executed by Williams and  constitutes a
legal, valid and binding obligation of Williams,  enforceable in accordance with
its terms.

          C. All  negotiations  relative to this Agreement and the  transactions
contemplated hereby have been carried on by Williams without the intervention of
any  other  person  in such  manner  as to give  rise to any  valid  claim for a
finder's fee, brokerage commission or other like payment.

          D.  No  approval  of  any  government  agency  or  commission  of  any
jurisdiction is necessary for the execution, delivery or performance by Williams
of any of the terms of this  Agreement,  or for the validity and  enforceability
hereof or with respect to the obligations of Williams hereunder.

          E. That Williams shall be solely  responsible  for compliance with all
laws, ordinances,  regulations,  rules and standards relating to its sale of the
Products (but not to the manufacture thereof).




                                                                              10


          F. On the date of  execution of this  Agreement  Williams has or shall
have obtained all necessary  governmental  approvals,  permits,  judicial and/or
administrative  orders,  licenses and  agreements  as may be necessary for it to
sell the Products. SUMMA, when necessary, shall assist Williams in obtaining all
such permits, licenses, agreements and approvals.

          G. Williams shall forthwith notify SUMMA of the date, reaction and the
specific  item of the Products when it learns that a user of any of the Products
has suffered an adverse reaction to the Products.

     9.   REPRESENTATIONS, WARRANTIES AND COVENANTS OF SUMMA.

          SUMMA represents, warrants and covenants to Williams as follows:

          A. That SUMMA is not the subject of any  lawsuit or other  action that
would render this Agreement ineffective.

          B. That there are no agreements  between SUMMA and any other person or
entity that preclude sale of the Products to Williams and Williams'  sale of the
products, in each case as contemplated hereby.

          C. SUMMA has full  power,  authority  and legal  right to execute  and
deliver, and to perform its obligations under this Agreement,  and has taken all
necessary  action to authorize the execution,  delivery and  performance of this
Agreement.  This  Agreement  has been duly  executed by SUMMA and  constitutes a
legal, valid and binding obligation of SUMMA, enforceable in accordance with its
terms.

          D.  No  approval  of  any  government  agency  or  commission  of  any
jurisdiction is necessary for the execution, delivery or performance by SUMMA of
any of the  terms of this  Agreement,  or for the  validity  and  enforceability
hereof or with respect to the obligations of SUMMA hereunder.

          E. That SUMMA  shall be solely  responsible  for  compliance  with all
laws, ordinances,  regulations,  rules and standards relating to its manufacture
of the Products and its sale of the Products to Williams.

          F. To the Knowledge (as defined below) of SUMMA,  Williams' use of the
rights to the Trademarks and any other trademarks,  tradenames, logos or similar
items owned or assigned  by SUMMA to  Williams  in  connection  with the matters
contemplated  hereby  in  the  United  States  (including  its  territories  and
possessions),  Canada and Mexico,  will not infringe upon or misappropriate  any
trademark or other similar  proprietary  or  intellectual  property right of any
person or entity under any applicable law, order,  statute,  rule, regulation or
ordinance protecting the proprietary or intellectual property rights of any



                                                                              11


person or entity of each such  jurisdiction.  As used in the  Paragraph  9F, the
term  "Knowledge"  shall mean any  infringement or  misappropriation  that Summa
knows or should have reason to know of.

     10.  NONCIRCUMVENTION.

          SUMMA agrees that it shall not knowingly contact, solicit, manufacture
or  sell  the  Products  to  Williams'  customers  or  to  persons  or  entities
specifically  identified  by Williams as its potential  customers.  All customer
information   provided  by  Williams  to  SUMMA  shall  be  deemed  Confidential
Information of Williams as defined in Paragraph 12 below.  However, in the event
that a Williams  "customer" is a  pre-existing  customer or prospect of SUMMA's,
then SUMMA shall have all right to continue doing business with that customer or
to solicit that customer's business. Further, SUMMA shall not be responsible for
the actions of other SUMMA  customer's who  independently  may solicit  business
from one or more of the Williams "customer's."

     11.  INTELLECTUAL PROPERTY.

          A. Williams  agrees that during the term of this Agreement it will not
authorize or cooperate in any manner  whatsoever with any other person or entity
to  provide  any such  other  person  or entity  the use of, or any  information
regarding  the  Products,  save and  except  by  written  permission  of  SUMMA.
Provided, however, SUMMA agrees that Williams shall provide all information that
is required to be produced to regulatory  authorities  having  jurisdiction over
the Products.

          B. Williams will promptly  report to SUMMA in writing the  particulars
of any  infringement  of the Patents or the Trademarks or any other trademark or
trade name owned  and/or used by SUMMA and  assigned to Williams  hereunder,  of
which  Williams  becomes  aware.  Williams will assist SUMMA in any  proceedings
commenced  by SUMMA in relation  thereto.  Williams  will not take any action in
relation to any such infringement without the prior written consent of SUMMA.

          C. If Williams becomes aware that any person alleges that the Patents,
or the  Trademarks  or any other trade marks,  trade names,  logos,  etc.  owned
and/or used by SUMMA and assigned to Williams hereunder,  infringe the rights of
any person, Williams will not make any admission in relation to such allegations
but will  promptly  report them to SUMMA.  Unless  otherwise  agreed in writing,
SUMMA will  control and conduct all  proceedings  relating to such  intellectual
property rights, at its own expense.

     12.  CONFIDENTIALITY.

          A. Each party agrees to provide to the other party such information as
shall  be  necessary  to  permit  performance  of their  respective  obligations
hereunder. All



                                                                              12


information  that is provided by either  party to the other shall be  considered
confidential  ("Confidential  Information") unless it is specifically identified
in  writing  at or  before  the  time it is  provided  to such  other  party  as
non-confidential.

          B. Neither Party hereto will, without the prior written consent of the
party  providing  Confidential   Information,   (i)  use  any  portion  of  such
Confidential  Information  for any purpose  other than the  performance  of this
Agreement, or (ii) disclose any portion of such Confidential  Information to any
persons or entities  other than the  officers  and  employees  of such party who
reasonably need to have access to the  Confidential  Information for purposes of
performance  under  this  Agreement,  and who  are to be  bound  by  appropriate
confidentiality  agreements  and  commitments  consistent  with this  Agreement.
Provided,  however, that SUMMA shall provide all information that is required to
be produced to regulatory authorities having jurisdiction over the Products.

          C. The  obligations of a recipient  party with respect to Confidential
Information  shall remain in effect (during and after the term of this Agreement
including any renewals or extensions  hereof) except to the extent that (i) such
Confidential  Information becomes generally available to the public,  other than
as a result of  unauthorized  disclosure by the recipient or persons to whom the
recipient has made the information available, (ii) such Confidential Information
has been released  without  restriction by the party providing the  Confidential
Information to another person or entity, (iii) such Confidential Information was
received  by the  recipient  on a  non-confidential  basis  from a  third  party
lawfully possessing and lawfully entitled to disclose such information,  or (iv)
the recipient party is able to establish that the  Confidential  Information was
independently  developed or  discovered by employees or agents of such party who
had no knowledge of the  Confidential  Information  by reason of the  disclosure
hereunder.

          D.   Confidential   Information  shall  remain  the  property  of  the
disclosing  party  and shall be  returned  to the  disclosing  party or shall be
destroyed upon  termination of this  Agreement.  Each recipient  party agrees to
safeguard Confidential Information utilizing reasonable care.

          E. In the event that either party shall be required by any court order
or  extraordinary  regulatory  agency order to disclose  any of the  information
deemed by this Agreement to be confidential and/or proprietary, that party shall
give  immediate  written  notice to the other party.  Upon receipt of same,  the
party whose  information may be the subject of such Court Order or extraordinary
regulatory  agency order shall be accorded the right to interpose all objections
it may have to the  disclosure of its  information.  The  foregoing  obligations
shall survive the termination or expiration of this Agreement and shall continue
until  the  earlier  of three  (3) years  from the date of such  termination  or
expiration or until a specific written release is exchanged by both Williams and
SUMMA.




                                                                              13


     13.  INDEMNIFICATION AND LIMITATION OF LIABILITY.

          A. SUMMA agrees to hold Williams  harmless and indemnify and defend it
from and against  any and all  claims,  losses,  liability,  demands,  causes of
action or costs, including,  but not limited to, attorney's fees, which Williams
may be called upon to pay as a result of SUMMA's  manufacture of the Products or
any breach of its representations, obligations or covenants hereunder.

          B.  Williams will  indemnify  and hold SUMMA  harmless from all costs,
claims, expenses,  losses,  liabilities,  judgments,  proceedings and demands of
whatsoever  nature  (including  legal  fees)  arising  out of any suit or action
brought against SUMMA based upon a claim arising out of the sale of the Products
by Williams and based on any statement or advertising made by Williams regarding
the Products,  or any breach of its  representations,  obligations  or covenants
hereunder.

          C. Neither  SUMMA or Williams  shall be obligated to hold  harmless or
defend the other from or against any liability  resulting from the negligence or
willful misconduct of the other party.

          D. The  foregoing  obligations  shall  survive the  expiration of this
Agreement and shall  continue until a specific  written  release is exchanged by
Williams and SUMMA.

     14.  ARBITRATION.

          A. If SUMMA and Williams become involved in an irreconcilable  dispute
between them,  and the dispute  cannot be settled  within thirty (30) days,  the
issue  shall be  submitted  to  arbitration  for  resolution.  The  rules of the
Williams Arbitration Association shall be followed in the arbitration proceeding
which shall be held in front of a  professional  arbitrator  and the decision of
the arbitrator shall be binding on the parties involved in the dispute.

          B. The arbitrator  used hereunder  shall be located in Tarrant County,
Texas.

          C. Any arbitrator  used as provided  herein must be acceptable to both
parties. If the parties are unable to agree upon an acceptable  arbitrator,  the
principal  American  Arbitration  Association  office in Tarrant County,  Texas,
shall designate an arbitrator.




                                                                              14


     15.  EXCUSE OF PERFORMANCE - FORCE MAJEURE.

          A. Neither  Williams nor SUMMA shall be in default in the  performance
of its obligations  hereunder to the extent that performance of such obligations
is delayed,  hindered,  or prevented by any cause which is beyond the reasonable
control  of either  party,  including  but not  limited  to  inclement  weather,
strikes,  lockouts,  inability  to  procure  labor,  materials,  or fuels due to
shortage,  fires,  riots,  incendiarism,   interference  by  civil  or  military
authorities,  compliance  with the  regulations  or  order  of any  governmental
authority,  or the outbreak of war or insurgence,  or acts of war - (declared or
undeclared).

          B. In the event SUMMA is unable to fulfill its  obligations  hereunder
by reason of any cause that would excuse its performance under Paragraph 15A, or
such other causes including,  without  limitation,  by reason of an voluntary or
involuntary  bankruptcy of SUMMA,  then it shall promptly notify Williams of the
cause or event.  In the event  SUMMA  shall not be able to rectify  the cause or
event within a period not to exceed forty five (45)  consecutive  days so as not
to be able to supply  Williams  with  Products  according to this  Agreement and
Williams stands ready to perform hereunder, then SUMMA and Williams shall locate
a  manufacturer  suitable to Williams  and SUMMA and SUMMA shall  assign all its
rights hereunder to such manufacturer;  provided,  however, should SUMMA be able
to fully correct its inability to fulfill its obligations  hereunder  within one
hundred and eighty (180) days following the date of such assignment,  then SUMMA
shall  thereafter  have the right to perform  hereunder as if such inability had
not  occurred.  Any such  assignment  by SUMMA  shall not  relieve  SUMMA of its
obligations  (other  than the  obligation  to supply  the  Products)  under this
Agreement.  In the event  that  SUMMA's  inability  to  perform  is based on the
inability or refusal of any of its  suppliers to perform,  then  Williams  shall
assist SUMMA to rectify that cause or event,  or locate a new supplier,  and the
provisions of this Paragraph 15B shall not become effective.

     16.  MISCELLANEOUS PROVISIONS.

          A.  WAIVER - No  waiver of  breach  of any of the  provisions  of this
Agreement shall be construed to be a waiver of any succeeding breach of the same
or any other provision.

          B.  SEPARABILITY  - If any  Paragraph,  sentence  or  clause  of  this
Agreement shall be adjudged illegal, invalid or unenforceable,  such illegality,
invalidity  or  unenforceability  shall not affect  the  legality,  validity  or
enforceability  of this  Agreement as a whole or of any  Paragraph,  sentence or
clause hereof not so adjudged.

          C. SUCCESSOR AND ASSIGNS - The covenants and  agreements  contained in
this  Agreement  shall apply to, inure to the benefit of and be binding upon the
parties hereto and upon their respective  successors and assigns.  Neither party
shall assign



                                                                              15


their  rights or  obligations  under this  Agreement  without the prior  written
approval of the other party (such approval not to be unreasonably withheld).

          D. NOTICE - Any notice required or permitted hereunder shall be deemed
sufficient  if  given  in  writing  and  delivered   personally,   by  facsimile
transmission,  by reputable  overnight  courier  service or United  States mail,
postage prepaid,  to the addresses shown below or to such other addresses as are
specified  by  similar  notice,  and  shall be  deemed  received  upon  personal
delivery, upon confirmed facsimile receipt, two days following deposit with such
courier  service,  or three (3) days from deposit in the United States mails, in
each case as herein provided:

If to Williams:                              If to SUMMA:
J.B. Williams Company, Inc.                  Summa Rx Laboratories, Inc.
65 Harristown Road                           P.O. Box 147
Glen Rock, New Jersey 07452                  Mineral Wells, Texas  76068-0147

Attention: Mr. Dario Margve                  Attention: Mr. Jerry A. Nelson
President                                    President
Phone   (201) 251-8100                       Phone   (940) 325-0771
Fax     (201)251-8097                        Fax     (940) 325-0807


     Either  party  may  change  its  address  and the  name  of its  designated
recipient  of copies of notices  for  purposes of this  Agreement  by giving the
other party written notice of the new name, address of its designated recipient.

          E. CAPTIONS - Any article or paragraph titles or captions contained in
this  Agreement  are for  convenience  only and shall not be deemed to  amplify,
modify or give full notice of the provisions thereof.

          F.  INTERPRETATION  - When the context in which words are used in this
Agreement indicate that such is the intent,  words in the singular shall include
the plural and the plural shall  include the  singular.  Words in the  masculine
gender shall include the feminine and neuter genders.

          G. ENTIRE  AGREEMENT - This Agreement and its amendments,  attachments
and Exhibits  represent  the final  expression of the entire  understanding  and
agreement  between  Williams and SUMMA,  and that all  previous  oral or written
agreements are null and void and superseded in their entirety by this Agreement.

          H.  AMENDMENTS - This  Agreement  may be amended or modified only by a
written amendment executed by Williams and SUMMA.




                                                                              16


          I.  INDEPENDENT  CONTRACTOR - Neither party is an agent or employee of
the other  party.  Each  party is and shall at all times  remain an  independent
contractor.  NEITHER PARTY IS GRANTED ANY RIGHT OR AUTHORITY TO ASSUME OR CREATE
ANY  OBLIGATION,  EXPRESS  OR  IMPLIED  ON BEHALF OF OR IN THE NAME OF THE OTHER
PARTY.

          J. LAW AND JURISDICTION - The formation, construction, performance and
validity of this  Agreement  shall be governed by the laws of the State of Texas
and the parties  hereby  agree to submit to the  exclusive  jurisdiction  of the
Court in Parker County, Texas having jurisdiction over the matter in dispute.

     IN WITNESS  WHEREOF,  the parties  hereto have executed  this  Agreement in
multiple counterparts, each of which shall be an original, on July 11,1997.



SUMMA RX LABORATORIES, INC.                     J.B. WILLIAMS COMPANY, INC.


By: /s/ Jerry A. Nelson                            By: /s/ Dario Margve         
   ------------------------------                  -----------------------------
   Jerry A. Nelson, President                      Dario Margve, President