HERRICK NORTON
SC 13D/A, 1998-09-10
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<PAGE>   1

                                  SCHEDULE 13D

                                 (Rule 13d-101)

                 Information to be Included in Statements Filed
                Pursuant to Rule 13d-1(a) and Amendments Thereto
                         Filed Pursuant to Rule 13d-2(a)

                       SECURITIES AND EXCHANGE COMMISSION
                              WASHINGTON, DC 20549

                                  SCHEDULE 13D

                    Under the Securities Exchange Act of 1934
                                (Amendment No. 4)




                            ELECTROPHARMACOLOGY, INC.
- --------------------------------------------------------------------------------
                                (Name of Issuer)


                                  COMMON STOCK
- --------------------------------------------------------------------------------
                         (Title of Class of Securities)


                                     286128
- --------------------------------------------------------------------------------
                                 (CUSIP Number)


                             Jonathan L. Awner, Esq.
                       Akerman, Senterfitt & Eidson, P.A.
                         One S.E. 3rd Avenue, 28th Floor
                      Miami, Florida 33131; (305) 374-5600
- --------------------------------------------------------------------------------
            (Name, Address and Telephone Number of Person Authorized
                     to Receive Notices and Communications)


                                 August 24, 1998
- --------------------------------------------------------------------------------
             (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
statement because of Rule 13d-1(b)(3) or (4), check the following box: [ ]



                                       

<PAGE>   2


                                  SCHEDULE 13D



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

           NORTON HERRICK
- --------------------------------------------------------------------------------
    2      CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP            (a)[ ]
                                                                       (b)[X]

- --------------------------------------------------------------------------------
    3      SEC USE ONLY

- --------------------------------------------------------------------------------
    4      SOURCE OF FUNDS

           PF
- --------------------------------------------------------------------------------

    5      CHECK BOX IF DISCLOSURE OF LEGAL PROCEEDINGS IS REQUIRED PURSUANT TO 
           ITEM 2(d) or 2(e)                                               [ ]

- --------------------------------------------------------------------------------
    6      CITIZENSHIP OR PLACE OF ORGANIZATION

           UNITED STATES
- --------------------------------------------------------------------------------
                                    7     SOLE VOTING POWER

           NUMBER OF                      -0-
            SHARES                  --------------------------------------------
         BENEFICIALLY               8     SHARED VOTING POWER    
           OWNED BY      
             EACH                         1,893,950 (see Item 4)
           REPORTING                --------------------------------------------
            PERSON                  9     SOLE DISPOSITIVE POWER
             WITH                            
                                          -0-
                                    --------------------------------------------
                                    10    SHARED DISPOSITIVE POWER

                                          1,893,950 (see Item 4)

- --------------------------------------------------------------------------------
    11     AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

           1,893,950
- --------------------------------------------------------------------------------
    12     CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (11) EXCLUDES CERTAIN SHARES

                                                                           [X]

- --------------------------------------------------------------------------------
    13     PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (11)

           15.1%
- --------------------------------------------------------------------------------
    14     TYPE OF REPORTING PERSON

           IN
- --------------------------------------------------------------------------------




                                         

<PAGE>   3


                                  SCHEDULE 13D


                                                                        


        The reporting person listed on the cover page to this Schedule 13D
hereby makes the following statement pursuant to Section 13(d) of the Securities
Exchange Act of 1934, as amended (the "Exchange Act"), and the rules and
regulations promulgated thereunder. This statement is an amendment of the
Schedule 13D dated November 13,1995, as amended and restated by Amendment No. 1
to Schedule 13D dated October 15, 1996, as amended by Amendment No. 2 to
Schedule 13D dated June 5, 1997 and as amended by Amendment No. 3 to Schedule
13D dated September 9, 1997 (collectively, the "Original Schedule 13D"). For
further information regarding any of the items amended herein, reference is made
to the Original Schedule 13D. Capitalized terms used herein and not defined have
the meanings ascribed to them in the Original Schedule 13D.

ITEM 2  IDENTITY AND BACKGROUND.

        Item 2 of the Original Schedule 13D is hereby amended by adding the
following additional paragraph:

        Pursuant to Rule 13d-5 promulgated under the Exchange Act, Mr. Herrick
may be deemed to be a member of a "group" with (a) David Saloff, Murray Feldman,
George Levine, and Paragon Capital Corporation at Spear, Leeds & Kellogg, LLC
(collectively, the "EPHI Group"), (b) Arup Sen, James Kaput and Richard Kneipper
(collectively, the "HTD Group") and (c) Gemini BioTech L.P., a Texas limited
partnership controlled by Krishna Jayaraman and Shashikala Jayaraman
(collectively, the "Gemini Group"), because Mr. Herrick has mutually agreed with
such parties to vote his shares of Common Stock in favor of certain matters
described in Item 4 below. However, because such agreement to vote is limited to
the matters described in Item 4 below, Mr. Herrick disclaims the existence of a
"group"and disclaims beneficial ownership of the shares of Common Stock
beneficially owned by the EPHI Group, the HTD Group and the Gemini Group. Mr.
Herrick is filing this statement on his own behalf, and not on behalf of the
EPHI Group, the HTD Group or the Gemini Group, pursuant to Rule 13d-1(k)(2)
promulgated under the Exchange Act. Any information provided in this statement
with respect to the EPHI Group, the HTD Group or the Gemini Group is based on
the Issuer's public filings with the Securities and Exchange Commission and
information provided by or on behalf of such parties, and Mr. Herrick disclaims
all responsibility for the completeness or accuracy of such information.

ITEM 4  PURPOSE OF TRANSACTION.

        Item 4 of the Original Schedule 13D is hereby amended in its entirety as
follows:

        On August 24, 1998, pursuant to a Master Agreement, dated June 18, 1998,
as amended on August 3, 1998 (the "Master Agreement") among HealthTech
Development, Inc. ("HTD"), Gemini BioTech L.P. ("Gemini"), the Issuer, EPi Sub,
Inc. ("EPi Sub"), Mr. Herrick, the EPHI Group, the HTD Group and the Gemini
Group, Mr. Herrick acquired 1,575,000 shares of Common Stock from the Issuer in
exchange for surrendering 242,950 shares of Preferred Stock and Warrants to
acquire 1,300,000 shares of Common Stock (the "Herrick Redemption").

        Mr. Herrick has acquired the Common Stock for investment purposes, and
except as described below, Mr. Herrick has no plans or proposals which relate to
or would result in any of the events or transactions described in Item 4(a)-(j)
of Schedule 13D.

        The Herrick Redemption was consummated in connection with certain
reorganization transactions on August 24, 1998 by the Issuer (the
"Reorganization") including: (a) the sale of certain assets of the Issuer to ADM
Tronics Unlimited, Inc. and AA Northvale Medical Associates, Inc.; (b) the
merger of HTD with and into EPi Sub with the shareholders of HTD receiving
shares of Common Stock in exchange for their shares of capital stock of HTD; (c)
the


                                         

<PAGE>   4


                                  SCHEDULE 13D


transfer of all of the assets of EPi Sub to Gemini Health Technologies L.P. (the
"Partnership") in exchange for partnership units in the Partnership; and (d) the
contribution by Krishna Jayaraman and Shashikala Jayaraman of all of their
partnership interests in Gemini and one hundred percent (100%) of the stock of
Gemini BioTech, Inc., a Texas corporation, in exchange for 6,000,000 partnership
units in the Partnership, which partnership units may be converted into
6,000,000 shares of Common Stock beginning on June 18, 1999.

        Pursuant to the Master Agreement, Mr. Herrick, the EPHI Group, the HTD
Group and the Gemini Group have agreed that following the consummation of the
Reorganization in connection with the election of directors to the Board of
Directors of the Issuer they shall each vote their shares of Common Stock in
favor of a seven-person board of directors, consisting of two persons nominated
by Mr. Herrick and the EPHI Group, two persons nominated by the HTD Group, two
persons nominated by the Gemini Group and one person who is the Chief Executive
Officer. In addition, in connection with the election of the EPHI Group's
nominees, Mr. Herrick and Mr. Feldman have agreed with each other to support the
nomination of, and vote their shares in favor of, a person selected by the
other, pursuant to a letter agreement dated July 27, 1998 (the "Letter
Agreement"). Pursuant to the Master Agreement, Mr. Herrick and the EPHI Group
have selected David Saloff and Murray Feldman as their initial nominees, the HTD
Group has selected Bernard Carrico and Richard Kneipper as their initial
nominees, and the Gemini Group has selected Dr. Krishna Jayaraman and Dr. Gary
Wilcox as their initial nominees. Arup Sen, the Company's Chief Executive
Officer, is the final initial nominee selected by such parties.

        Pursuant to the Master Agreement, upon consummation of the
Reorganization, the Issuer and Messrs. Herrick and Saloff, have agreed that the
Stockholders Agreement dated as of November 13, 1995 among such parties and the
Registration Rights Agreement dated as of November 13, 1995 among such parties
shall be terminated and of no further force and effect.

        Pursuant to the Master Agreement, upon consummation of the
Reorganization which occurred on August 24, 1998, all shares of Preferred Stock
and all Warrants held by Mr. Herrick were redeemed and exchanged for an
aggregate of 1,575,000 shares of Common Stock of the Issuer (the "Herrick
Redemption Shares"). In addition, upon consummation of the Reorganization all
warrants to purchase shares of Common Stock owned by Messrs. Feldman and Levine
were redeemed and exchanged for 160,000 shares and 90,000 shares of Common
Stock, respectively (collectively, the "Other Redemption Shares," and together
with the Herrick Redemptions Shares, the "Redemption Shares").

        Pursuant to the Master Agreement, Mr. Herrick, the EPHI Group, the HTD
Group and the Gemini Group have agreed not to sell or otherwise dispose of any
of the Redemption Shares or any other shares of Common Stock received in the
Reorganization for a period of 365 days after the effective date of the
Reorganization, provided that they each will be permitted to sell an amount of
shares which when aggregated with all shares sold for their individual accounts
within the preceding three months does not exceed the greater of (a) one percent
of the outstanding shares of Common Stock of the Issuer or (b) the average
weekly reported trading volume of such securities during the preceding four
calender weeks.

        The Master Agreement will terminate on the earliest to occur of (a) two
years from the effective date of the Reorganization, or (b) the date on which
the market capitalization of the Issuer equals or exceeds $40,000,000 for any
period of 20 trading days within any six-month period.

        Pursuant to a Registration Rights Agreement, dated as of June 28, 1998
(the "Registration Rights Agreement"), among the Issuer, Mr. Herrick, the EPHI
Group, the HTD Group and the Gemini Group, the Issuer has agreed to file


                                         

<PAGE>   5


                                  SCHEDULE 13D


                                                                        


with the Securities and Exchange Commission as soon as reasonably practicable a
registration statement to register the shares of Common Stock held by Mr.
Herrick, the EPHI Group, the HTD Group and the Gemini Group. The Issuer has
agreed to use its reasonable efforts to have the registration statement declared
effective and remain continuously effective for at least one year (unless the
registration statement can be filed or amended on Form S-3, in which case it
shall remain effective until all selling stockholders thereunder can resell
their shares under Rule 144(k) under the Securities Act of 1933, as amended). In
addition, if such registration statement is no longer in effect, the Issuer has
granted such selling security holders piggyback registration rights on other
registration statements to be filed by the Company. Mr. Herrick, the EPHI Group,
the HTD Group and the Gemini Group have agreed to share the expenses of any such
registration statements pro rata.

        Copies of the Master Agreement (including amendments thereto), the
Registration Rights Agreement and the Letter Agreement are attached hereto as
Exhibits 10, 11 and 12, respectively, and are incorporated herein by reference.
The descriptions of the terms of the Master Agreement, the Registration Rights
Agreement and the Letter Agreement set forth herein are qualified in their
entirety by the terms of the Master Agreement, the Registration Rights Agreement
and the Letter Agreement, respectively.

ITEM 5  INTEREST IN SECURITIES OF THE ISSUER.

        Item 5 of the Original Schedule 13D is hereby amended in its entirety as
follows:

        (a) and (b) As of August 24, 1998, Mr. Herrick may be deemed to
beneficially own, on an individual basis before attribution of shares
beneficially owned as part of a "group" as described below, 1,893,950 shares of
Common Stock representing approximately 15.1% of the issued and outstanding
shares of Common Stock, calculated in accordance with Rule 13d-3 under the
Exchange Act (based on 12,505,480 shares of Common Stock issued and outstanding
following the consummation of the Reorganization, as reported by the Issuer).
Except as described in Item 4 above, Mr. Herrick has the sole power to vote and
the sole power to dispose of the 1,893,950 shares of Common Stock which he
beneficially owns.

        To the extent that Mr. Herrick may be deemed to be a member of a "group"
with the EPHI Group, the HTD Group and the Gemini Group pursuant to Rule 13d-5
under the Exchange Act, Mr. Herrick may be deemed to beneficially own the shares
of Common Stock currently beneficially owned by (a) the EPHI Group consisting
of: Mr. Saloff (259,199 shares of Common Stock and options exercisable within 60
days of the date hereof to purchase 134,286 shares of Common Stock), Mr. Feldman
(895,410 shares of Common Stock and options exercisable within 60 days of the
date hereof to purchase 22,500 shares of Common Stock) and Paragon Capital
Corporation at Spear, Leeds & Kellogg, LLC (571,039 shares of Common Stock); (b)
the HTD Group consisting of: Mr. Sen (2,278,394 shares of Common Stock and
options exercisable within 60 days of the date hereof to purchase 361,966 shares
of Common Stock), Mr. Kaput (1,339,694 shares of Common Stock) and Mr. Kneipper
(1,339,694 shares of Common Stock); and (c) the Gemini Group, the members of
which do not currently beneficially own any shares, but will have the right to
convert certain partnership units in the Partnership into Common Stock beginning
on June 18, 1998, for which Mr. Herrick shares voting power pursuant to the
Master Agreement described in Item 4 above. As of August 24, 1998, the 7,202,182
shares of Common Stock beneficially owned by the EPHI Group and the HTD Group,
together with the 1,893,950 shares of Common Stock beneficially owned by Mr.
Herrick described above, represent approximately 69.8% of the issued and
outstanding shares of Common Stock, calculated in accordance with Rule 13d-3
under the Exchange Act (based on 12,505,480 shares of Common Stock issued and
outstanding following the consummation of the Reorganization, as reported by the
Issuer, plus the 134,286 shares of Common Stock issuable to Mr. Saloff upon
exercise of certain options, plus the 22,500 shares of


                                         

<PAGE>   6


                                  SCHEDULE 13D


                                                                        


Common Stock issuable to Mr. Feldman upon exercise of certain options and plus
the 361,966 shares of Common Stock issuable to Mr. Sen upon exercise of certain
options, in each case which may be deemed to be beneficially owned by such
persons and which are deemed outstanding for purposes of this computation). Mr.
Herrick shares voting and dispositive power of the shares of Common Stock
beneficially owned by the EPHI Group and the HTD Group as described in Item 4
above, but has no other rights with respect to such shares and disclaims
beneficial ownership of such shares and the existence of a "group."

        (c) Except as described in Item 4, Mr. Herrick has not affected any
transactions in the securities of the Issuer during the past 60 days.

ITEM 6  CONTRACTS, ARRANGEMENTS, UNDERSTANDINGS OR RELATIONSHIPS WITH 
        RESPECT TO SECURITIES OF THE ISSUER.

        Item 6 of the Original Schedule 13D is hereby amended by adding the
following additional paragraph:

        Reference is made to the Master Agreement, the Registration Rights
Agreement and the Letter Agreement described in Item 4 above.

ITEM 7  MATERIAL TO BE FILED AS EXHIBITS.

        Item 7 of the Original Schedule 13D is hereby amended by adding the
following additional exhibit:

Exhibit 10:    Form of Master Agreement, dated as of June 18, 1998, among HTD,
               Gemini, the Issuer, EPi Sub, Mr. Herrick, the EPHI Group, the HTD
               Group, and the Gemini Group, as amended on August 3, 1998.

Exhibit 11:    Form of Registration Rights Agreement, dated as of June 28, 1998
               among the Issuer, Mr. Herrick, the EPHI Group, the HTD Group and
               the Gemini Group.

Exhibit 12:    Letter Agreement, dated as of August 3, 1998, by and between 
               Messrs. Herrick and Feldman.


                                         

<PAGE>   7


                                  SCHEDULE 13D





                                    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.



DATED: September 10, 1998                                /s/ Norton Herrick
                                                         -----------------------
                                                          NORTON HERRICK







                                         




<PAGE>   1
                                                                      Exhibit 10

                                MASTER AGREEMENT

         THIS MASTER AGREEMENT (this "Agreement") is made as of June __, 1998,
among HEALTHTECH DEVELOPMENT, INC., a Texas corporation ("HTD"), GEMINI BIOTECH
L.P., a Texas limited partnership ("Gemini"), ELECTROPHARMACOLOGY, INC., a
Delaware corporation ("EPi"), EPi SUB INC., a Delaware corporation ("EPi Sub"),
the undersigned stockholders of EPi (the "the Pre-Closing EPi Stockholders"),
the undersigned stockholders of HTD (the "HTD Stockholders") and the undersigned
partners of Gemini (the "Gemini Partners") (the Pre-Closing EPi Stockholders,
the HTD Stockholders and the Gemini Partners are each referred to as an "Equity
Holder," and together, as the "Equity Holders").

                                    RECITALS

         A. Each Equity Holder owns or has the power to vote the number of
shares of the common stock, $.01 par value, of EPi ("EPi Common Stock") or
common stock, $.01 par value, of HTD ("HTD Common Stock") or partnership
interests of Gemini ("Gemini Interests") set forth next to his, her or its name
on the signature page of this Agreement (together with all shares of such stock
or interests in such partnership that the Equity Holder subsequently acquires or
obtains the power to vote, the "Equity Interests").


         B. EPi has entered into a certain Asset Purchase Agreement with ADM
Tronics Unlimited, Inc. and AA Northvale Medical Associates, Inc. ("AA
Northvale"), dated May 27, 1998 (the "Asset Purchase Agreement"), pursuant to
which, INTER ALIA, EPi will assign certain of its assets to AA Northvale (the
"Assigned Assets") and AA Northvale will assume certain liabilities of EPi (the
"Assumed Liabilities").

         C. EPi and EPi Sub have entered into a capital contribution agreement
dated June 18, 1998 (the "EPi Sub Capital Contribution Agreement"), pursuant to
which EPi will contribute all of its assets (other than the Assigned Assets) and
all of its liabilities (other than the Assumed Liabilities) to EPi Sub in
exchange for One Hundred shares of common stock, $.01 par value, of EPi Sub (the
"EPi Sub Common Stock").

         D. EPi, EPi Sub and HTD have entered into a certain Agreement of Merger
and Plan of Reorganization dated June11, 1998 (the "Merger Agreement"), pursuant
to which HTD will be merged with and into EPi Sub (the "Merger") and the
stockholders of HTD will exchange their shares of HTD Common Stock for shares of
EPi Common Stock in accordance with the terms and conditions of the Merger
Agreement.

         E. It is a condition to the obligations of EPi, EPi Sub and HTD under
the Merger Agreement that EPi, as the sole stockholder of EPi Sub, and the HTD
Stockholders shall have agreed to vote their shares of EPi Sub Common Stock and
HTD Common Stock, respectively, in favor of the Merger and the adoption of the
Merger Agreement.

         F. EPi, EPi Sub and Gemini have entered into a certain Contribution
Agreement, dated June 18, 1998 (the "Gemini Health Technologies Contribution
Agreement"), pursuant to which EPi Sub and Gemini have agreed to transfer all of
their assets and liabilities to Gemini Health Technologies L.P., a Delaware



                                       

<PAGE>   2



limited partnership (the "Partnership") in exchange for Partnership Units in the
Partnership. Pursuant to the Unit Exchange Agreement to be entered into among
EPi, Gemini and the Partnership (the "Exchange Agreement"), Gemini shall have
certain rights to exchange its Partnership Units (the "Gemini Partnership
Units") for shares of EPi Common Stock.

         G. It is a condition to the obligations of EPi Sub and Gemini under the
Gemini Health Technologies Contribution Agreement that EPi, as the sole
stockholder of EPi Sub, and the Gemini Partners shall have agreed to vote their
shares of EPi Sub Common Stock and Gemini Interests, respectively, in favor of
the transactions contemplated by the Gemini Health Technologies Contribution
Agreement.

         H. This Agreement sets forth certain agreements of Ei, EPi Sub, HTD,
Gemini and the Equity Holders concerning (i) the approval of the transactions
contemplated by the Asset Purchase Agreement, the EPi Sub Capital Contribution
Agreement, the Merger Agreement and the Gemini Health Technologies Contribution
Agreement (collectively, the "Reorganization Transactions"), (ii) the election
of directors of EPi following the Reorganization Transactions, and (iii) certain
changes to the capitalization of EPi to be effected in connection with the
Reorganization Transactions, as described in Sections 4, 5 and 6 of this
Agreement (collectively, the "Capitalization Changes").

                                    AGREEMENT

      Accordingly, the parties agree as follows:

1.    AGREEMENTS TO VOTE REGARDING THE REORGANIZATION TRANSACTIONS.

      a.    The Reorganization Transactions and the Capitalization Changes do
            not require the approval or ratification of the shareholders of EPi
            and it is not intended that the shareholders of EPi will be asked to
            approve or ratify the Reorganization Transactions or the
            Capitalization Changes. Nevertheless, if such approval or
            ratification is at any time sought by EPi, each Pre-Closing EPi
            Stockholder irrevocably agrees to vote his, her or its shares of EPi
            Common Stock in favor of the approval or ratification of the
            Reorganization Transactions and the Capitalization Changes at any
            meeting of the stockholders of EPi at which any or all of the
            Reorganization Transactions and/or the Capitalization Changes are
            considered, or if applicable, in any consent concerning the approval
            or ratification of any or all of the Reorganization Transactions
            and/or the Capitalization Changes.

      b.    EPi and each HTD Stockholder irrevocably agrees to vote his, her or
            its shares of EPi Sub Common Stock or HTD Common Stock, as
            applicable, in favor of the adoption or ratification of the Merger
            Agreement (including without limitation all schedules and exhibits
            thereto as finalized pursuant to the provisions thereof) and the
            approval or ratification of the Merger at any meeting of the
            stockholders of EPi Sub or the stockholders of HTD, as applicable,
            at which the Merger Agreement is considered, or if applicable, in
            any consent concerning the Merger Agreement.

      c.    EPi and each Gemini Partner irrevocably agrees to vote his, her or
            its shares of EPi Sub Common Stock or Gemini Interests, as
            applicable, in favor of the approval or ratification of the Gemini
            Health Technologies Contribution Agreement (including without
            limitation all schedules and exhibits thereto as finalized pursuant
            to the provisions thereof) at any


                                        2

<PAGE>   3



            meeting of the stockholders of EPi Sub or the partners of Gemini, as
            applicable, at which the Gemini Health Technologies Contribution
            Agreement is considered, or if applicable, in any consent concerning
            the Gemini Health Technologies Contribution Agreement.

      d.    Each Equity Holder agrees to vote against the approval or
            ratification of any proposal relating to a competing merger or
            business combination involving the acquisition of EPi, EPi Sub, HTD
            or Gemini, as applicable, or the purchase of all or a substantial
            portion of the assets of EPi, EPi Sub, HTD or Gemini, as applicable,
            other than as contemplated by the Reorganization Transactions.

      e.    EPi, EPi Sub, HTD, Gemini and each Equity Holder agrees to vote
            against any transaction that is inconsistent with the obligations of
            EPi, EPi Sub, HTD or Gemini, as applicable, to consummate the
            Reorganization Transactions and the Capitalization Changes.

      f.    It is intended that the Reorganization Transactions shall be
            consummated in the following order on the same day (the "Effective
            Date"): (1) the transactions contemplated by the EPi Sub Capital
            Contribution Agreement shall be consummated, (2) the transactions
            contemplated by the Merger Agreement shall be consummated and the
            Merger shall become effective, (3) the transactions contemplated by
            the Gemini Health Technologies Contribution Agreement shall be
            consummated, (4) the Capitalization Changes shall be consummated and
            (5) the transactions contemplated by the Asset Purchase Agreement
            shall be consummated; provided, however, that except as provided in
            the two immediately subsequent sentences, it shall be deemed to be a
            condition subsequent to each Reorganization Transaction that all
            subsequent Reorganization Transactions, if any, are consummated and
            no Reorganization Transaction shall be deemed to be consummated
            unless all of the Reorganization Transactions have been consummated.
            If, pursuant to Section 7(b), this Agreement terminates as to Gemini
            and the Gemini Partners, the Reorganization Transactions (other than
            those contemplated by the Gemini Health Technologies Contribution
            Agreement) shall be consummated unless either HTD or EPi elects to
            terminate this Agreement pursuant to Section 7(b). If, pursuant to
            Section 7(b), this Agreement terminates as to HTD and the HTD
            Stockholders, the Reorganization Transactions (other than those
            contemplated by the Merger Agreement) shall be consummated unless
            either Gemini or EPi elects to terminate this Agreement pursuant to
            Section 7(b).

2.    AGREEMENTS TO VOTE REGARDING BOARD OF DIRECTORS.

      a.    As of the Effective Date, the Board of Directors of EPi shall be
            comprised of seven directors. Of such directors, two directors shall
            be nominated (the "EPi Nominees") by a 75% supermajority vote of
            Messrs. George Levine, Murray Feldman, David Saloff and Norton
            Herrick, based on the number of shares of EPi held by each (the "EPi
            Representatives"), two directors shall be nominated (the "HTD
            Nominees") by majority vote of Messrs. Arup Sen, James Kaput and
            Richard Kneipper, based on the number of shares of EPi held by each
            (the "HTD Representatives"), two directors (the "Gemini Nominees")
            shall be nominated by Gemini (the "Gemini Representative"), and the
            Chief Executive Officer of EPi shall be nominated as a Director
            unless otherwise determined by a majority vote of the EPi
            Representatives, the HTD Representatives and the Gemini
            Representative;


                                        3

<PAGE>   4



            provided, however, that if the number of members of the Board of
            Directors of EPi shall be fixed by the board as a number other than
            seven, the number of EPi Nominees, the number of HTD Nominees and
            the number of Gemini Nominees shall be adjusted accordingly. The EPi
            Representatives hereby nominate David Saloff and Murray Feldman as
            the initial EPi Nominees, the HTD Representatives hereby nominate
            Bernard Carrico and Richard Kneipper as the initial HTD Nominees and
            the Gemini Representative hereby nominates Dr. Krishna Jayaraman and
            Dr. Gary Wilcox as the initial Gemini Nominees.

      b.    Subject to the provisions of Subsection 2(c) below, each Pre-Closing
            EPi Stockholder, HTD Stockholder, and Gemini (collectively, the
            "Post-Closing EPi Stockholders") agrees at all times in any election
            of directors of EPi, whether at a meeting of directors or
            stockholders, by consent or otherwise, and in any election or action
            to replace any director or fill vacancies occurring between annual
            meetings, to vote the shares of EPi now or hereafter owned by him,
            her or it for (i) the EPi Nominees, the HTD Nominees, and the Gemini
            Nominees and (ii) Arup Sen as long as he continues to be the Chief
            Executive Officer of EPi (unless otherwise determined by the EPi
            Representatives, the HTD Representatives and the Gemini
            Representative). All certificates evidencing EPi Common Stock issued
            to the Post-Closing EPi Stockholders shall be legended as follows
            (the "Legend"): "The Shares of EPi Common Stock represented by this
            Certificate are subject to the Master Agreement dated as of June __,
            1998, a copy of which is on file at the office of the Corporation."
            Each Post-Closing EPi Stockholder currently holding certificates
            representing shares of EPi Common Stock agrees to promptly exchange
            such certificates for new certificates containing the Legend. The
            Legend shall remain on such certificates until, pursuant to Section
            2(f) or Section 7 of this Agreement, the Post-Closing EPi
            Stockholder is no longer subject to Section 2 of this Agreement. The
            provisions of this Section 2(b) shall be binding upon the
            successors, assigns, designees and transferees of each Post-Closing
            EPi Stockholder as if they were a signatory hereto.

      c.    Prior to each nomination of directors, the EPi Representatives, the
            HTD Representatives and the Gemini Representative shall disclose to
            EPi the identity of the EPi Nominees, the HTD Nominees and the
            Gemini Nominees. In the event that the election of any EPi Nominee,
            HTD Nominee or Gemini Nominee to the Board of Directors would
            reasonably be expected to have a material adverse effect on the
            operation, financial condition, properties or business of EPi in the
            good faith judgment (as evidenced by a written summary of the
            specific reasons therefor) of the non-nominating EPi
            Representatives, HTD Representatives, or Gemini Representatives, as
            the case may be, EPi and the Post-Closing EPi Stockholders shall not
            be required to comply with their respective obligations under this
            Agreement solely with respect to such EPi Nominee, HTD Nominee, or
            Gemini Nominee, as the case may be, and the respective
            representatives nominating the EPi Nominee, the HTD Nominee or the
            Gemini Nominee, as the case may be, shall be entitled to name a
            replacement for such nominee.

      d.    The EPi Representatives (by a 75% supermajority vote), the HTD
            Representatives (by a majority vote) and the Gemini Representative,
            as the case may be, may at any time and for any reason (or for no
            reason) designate for removal any individual that is elected as a
            director of EPi as a result of the nomination of such individual by
            such Representatives. Each Post-Closing EPi Stockholder hereby
            agrees to vote for or provide the required consent


                                        4

<PAGE>   5



            to effect a Removal contemplated by the immediately prior sentence.
            If at any time a vacancy is created on the Board of Directors by
            reason of the death, removal or resignation of a director, the EPi
            Representatives, the HTD Representatives or the Gemini
            Representatives, as the case may be, that nominated such director
            shall be entitled to nominate an individual to fill such vacancy
            until his or her successor is elected or qualified, and the
            Post-Closing EPi Stockholders shall, as soon as practicable after
            the date such vacancy first occurs and in any event prior to the
            transaction of any other business by the Board of Directors, take
            action to elect such nominee to fill such vacancy.

      e.    In order to effectuate the provisions of this Section 2, the
            Post-Closing EPi Stockholders hereby agree that when any action or
            vote is required to be taken by EPi or the shareholders of EPi
            pursuant to this Section 2, the Post-Closing EPi Stockholders shall
            each use his, her or its best efforts to call, or cause the
            appropriate officers and directors of EPi to call, a stockholders'
            meeting or to execute or cause to be executed a written consent
            pursuant to Section 228(a) of the Delaware General Corporation Law
            to effectuate such stockholder action.

      f.    Notwithstanding anything in this Agreement to the contrary, from and
            after the date that any EPi Representative, any HTD Representative
            or the Gemini Representative beneficially holds individually less
            than two percent (2%) of the outstanding shares of EPi Common Stock
            (or, in the case of Gemini, Partnership Units that are exchangeable
            for such amount of shares of EPi Common Stock) and is not an officer
            of EPi, such individual shall no longer be an EPi Representative, an
            HTD Representative or a Gemini Representative entitled to
            participate in the selection and nomination of the EPi Nominees, the
            HTD Nominees or the Gemini Nominees, as the case may be, and shall
            no longer be bound to vote his, her or its Equity Interests in
            accordance with this Section 2. If, pursuant to this Section 2(f),
            at any time there is no EPi Representative, no HTD Representative or
            no Gemini Representative, then in any such case, the directors
            nominated by such Representatives shall complete their term and
            thereafter the Board of Directors of EPi shall be reduced by the
            number of EPi Nominees, HTD Nominees or Gemini Nominees, as
            applicable, and such directors shall no longer have any right
            hereunder to be nominated as a director of EPi.

3.    LIMITATION ON VOTING POWER. It is expressly understood and acknowledged
      that nothing contained herein is intended to restrict any Post-Closing EPi
      Stockholder from voting on any matter (other than the election of
      directors of EPi) or otherwise from acting, in the Post-Closing EPi
      Stockholder's capacity as a director or officer of EPi, EPi Sub, HTD,
      Gemini, or the Partnership with respect to any matter, including but not
      limited to, the management or operation of EPi, EPi Sub, HTD, Gemini, or
      the Partnership.

4.    CERTAIN AGREEMENTS WITH NORTON HERRICK.

      a.    As of the Effective Date, that certain Stockholders Agreement, dated
            as of November 13, 1995, among EPi, Norton Herrick and David Saloff
            and that certain Registration Rights Agreement dated as of November
            13, 1995, between EPi and Norton Herrick shall each be terminated
            and of no further force and effect.



                                        5

<PAGE>   6



      b.    EPi and Mr. Herrick hereby agree to (i) the redemption of all of the
            issued and outstanding shares of EPi Preferred Stock owned of record
            by Mr. Herrick, and (ii) the redemption and cancellation of all
            warrants to purchase shares of EPi Common Stock issued and
            outstanding to Mr. Herrick and which are more fully described on
            Schedule A attached hereto (the "Herrick EPi Warrants"), in exchange
            for the issuance by EPi of 1,575,000 shares of EPi Common Stock to
            Mr. Herrick (collectively, the "Herrick Redemption"). The Herrick
            Redemption shall be effective on the Effective Date and at such
            time, the shares of EPi Preferred Stock and any and all of the
            Herrick EPi Warrants issued and outstanding shall be automatically
            redeemed and converted without further action on the part of the
            holder thereof into an aggregate of 1,575,000 shares of EPi Common
            Stock. Each outstanding certificate evidencing EPi Preferred Stock
            and the Herrick EPi Warrants not surrendered on the Effective Date
            will as of the Effective Date be deemed for all purposes to be
            canceled and no longer represent shares of EPi Preferred Stock or
            warrants to purchase EPi Common Stock, but instead will represent
            the right to receive that number of whole shares of EPi Common Stock
            into or for which the shares of EPi Preferred Stock and the Herrick
            EPi Warrants will be converted pursuant to this Section 4(b).

5.    CERTAIN AGREEMENTS WITH MURRAY FELDMAN. EPi and Mr. Feldman hereby agree
      to the redemption and cancellation of all warrants to purchase shares of
      EPi Common Stock issued and outstanding to Mr. Feldman and which are more
      fully described on Schedule A attached hereto (the "Feldman EPi
      Warrants"), in exchange for the issuance by EPi of 160,000 shares of EPi
      Common Stock to Mr. Feldman (collectively, the "Feldman Redemption"). The
      Feldman Redemption shall be effective on the Effective Date and at such
      time, any and all of the Feldman EPi Warrants issued and outstanding shall
      be automatically redeemed and converted without further action on the part
      of the holder thereof into an aggregate of 160,000 shares of EPi Common
      Stock. Each outstanding certificate evidencing the Feldman EPi Warrants
      not surrendered on the Effective Date will as of the Effective Date be
      deemed for all purposes to be canceled and no longer represent warrants to
      purchase EPi Common Stock, but instead will represent the right to receive
      that number of whole shares of EPi Common Stock into or for which the
      Feldman EPi Warrants will be converted pursuant to this Section 5.

6.    CERTAIN AGREEMENTS WITH GEORGE LEVINE AND PARAGON CAPITAL CORP. AT SPEAR,
      LEEDS & KELLOGG ("PARAGON CAPITAL"). EPi, George Levine, and Paragon
      Capital hereby agree to the redemption and cancellation of all warrants to
      purchase shares of EPi Common Stock issued and outstanding to Mr. Levine
      and/or Paragon Capital and which are more fully described on Schedule A
      attached hereto (collectively, the "Paragon EPi Warrants"), in exchange
      for the issuance by EPi of an aggregate 90,000 shares of EPi Common Stock
      to George Levine and Paragon Capital (collectively, the "Paragon
      Redemption"). The Paragon Redemption shall be effective on the Effective
      Date and at such time, any and all of the Paragon EPi Warrants issued and
      outstanding shall be automatically redeemed and converted without further
      action on the part of the holder thereof into an aggregate of 90,000
      shares of EPi Common Stock. Each outstanding certificate evidencing the
      Paragon EPi Warrants not surrendered on the Effective Date will as of the
      Effective Date be deemed for all purposes to be canceled and no longer
      represent warrants to purchase EPi Common Stock, but instead will
      represent the right to receive that number of whole shares of EPi Common
      Stock into or for which the Paragon EPi Warrants will be converted
      pursuant to this Section 6.




                                        6

<PAGE>   7




7.    TERMINATION.

      a.    Subject to earlier termination as provided in Section 7(b), this
            Agreement shall terminate if the Effective Date has not occurred on
            or before August 31, 1998.

      b.    If the Merger Agreement is terminated in accordance with Article X
            of the Merger Agreement, this Agreement will terminate as to HTD and
            the HTD Stockholders at the time of such termination (a "Partial
            Termination") and this Agreement may be terminated by either EPi or
            Gemini (a "Complete Termination"). If the Gemini Health Technologies
            Contribution Agreement is terminated in accordance with Article X of
            the Gemini Health Technologies Contribution Agreement, this
            Agreement will terminate as to Gemini and the Gemini Partners at the
            time of such termination (a "Partial Termination") and this
            Agreement may be terminated by either HTD or EPi (a "Complete
            Termination"). In the event of a Partial Termination pursuant to
            this Section 7(b), there shall be five (5) directors pursuant to
            Section 2(a) and the parties as to which this Agreement terminates
            (and their respective Representatives) shall not have the right to
            nominate directors of EPi.

      c.    In the event of the termination of this Agreement pursuant to
            Section 7(a) or 7(b), Sections 4, 5 and 6 of this Agreement shall
            likewise be of no force and effect.

      d.    From and after the Effective Date, the provisions of this Agreement
            (other than Section 1, which shall have expired pursuant to its
            terms), shall terminate on the earlier of (a) two years from the
            Effective Date, or (b) the date on which the market capitalization
            of EPi equals or exceeds Forty Million Dollars ($40,000,000) for any
            period of twenty (20) trading days within any six (6) month period;
            PROVIDED, HOWEVER, the provisions of Sections 4, 5 and 6 of this
            Agreement shall survive the termination of this Agreement pursuant
            to this Section 7(d).

8.    REPRESENTATIONS, WARRANTIES, AND ADDITIONAL COVENANTS. Each Equity Holder
      and each Post-Closing EPi Stockholder hereby represents and warrants that
      such Equity Holder or Post-Closing EPi Stockholder has the capacity and
      all necessary power and authority to vote the Equity Interests or shares
      of EPi Common Stock owned by it, as applicable, and that this Agreement
      constitutes a legal, valid, and binding obligation of the Equity Holder or
      Post-Closing EPi Stockholder, enforceable in accordance with its terms,
      except as may be limited by bankruptcy, insolvency, or similar laws
      affecting enforcement of creditors rights generally. Each Equity Holder
      further agrees that from the date hereof until the Effective Date or until
      the earlier termination of this Agreement pursuant to Section 7 of this
      Agreement, such Equity Holder will not sell or otherwise voluntarily
      dispose of any of the Equity Interests that are owned by such Equity
      Holder or take any other voluntary action that (i) would have the effect
      of removing such Equity Holder's obligations under this Agreement with
      respect to such Equity Holder's Equity Interests or (ii) would be
      inconsistent with this Agreement; PROVIDED, HOWEVER, that this sentence of
      Section 8 shall not apply to (i) Paragon Capital, (ii) the HTD 
      Stockholders if this Agreement terminates as to HTD and the HTD
      Stockholders pursuant to Section 7(b) or (iii) the Gemini Partners if this
      Agreement terminates as to Gemini and the Gemini Partners pursuant to
      Section 7(b). EPi, EPi Sub, HTD and Gemini each hereby represents and
      warrants that it has the capacity and all necessary power and authority to
      enter into this Agreement, that it has taken all necessary action to enter
      into and perform its obligations pursuant to this Agreement, and


                                        7

<PAGE>   8



      that this Agreement constitutes its legal, valid, and binding obligation,
      enforceable against it in accordance with its terms, except as may be
      limited by bankruptcy, insolvency, or similar laws affecting enforcement
      of creditors rights generally.

9.    REPRESENTATIONS, WARRANTIES AND ADDITIONAL COVENANTS OF EPI AND THE
      POST-CLOSING EPI STOCKHOLDERS. The shares of EPi Common Stock to be issued
      pursuant to Sections 4, 5 and 6 above, when issued, will be duly
      authorized, validly issued, fully paid and non-assessable. EPi shall use
      its reasonable best efforts to register as promptly as practicable after
      the Effective Date, the shares of EPi Common Stock issued pursuant to the
      Merger Agreement, the shares of EPi Common Stock into which the Gemini
      Partnership Units are exchangeable pursuant to the Exchange Agreement and
      the shares of EPi Common Stock issued pursuant to the Herrick Redemption,
      the Feldman Redemption, and the Paragon Redemption, in accordance with the
      Registration Rights Agreement attached hereto as Exhibit A.
      Notwithstanding anything to the contrary contained in this Section 9, no
      shares of EPi Common Stock covered by Section 10 of this Agreement may be
      offered, sold or otherwise disposed of (i) in contravention of Section 10
      of this Agreement or (ii) unless the transferee agrees in writing to be
      bound by the provisions of this Agreement as if he, she or it were a
      signatory hereto.

10.   LOCK-UP OF SALE OF EQUITY INTERESTS OF EPI COMMON STOCK. Each of the
      Post-Closing EPi Stockholders (other than Paragon Capital) hereby
      irrevocably agrees that he, she or it will not, directly or indirectly,
      without the prior written consent of each of the other Equity Holders
      (other than Paragon Capital), for a period of 365 days after the Effective
      Date, sell, offer to sell, contract to sell, pledge, grant any option for
      the sale of or otherwise transfer or dispose of, or cause the disposition
      of (or agree to do any of the foregoing), any shares of EPi Common Stock
      (i) received in the Merger, the Herrick Redemption, the Feldman Redemption
      or the Paragon Redemption that are issued to Mr. Levine or (ii) issued
      pursuant to the Exchange Agreement, other than any pledge of such shares
      in connection with a bona fide loan transaction where the pledgee takes
      any such shares of EPi Common Stock subject to this Section 10, except
      that such shares of EPi Common Stock may be sold for the account of the
      Post-Closing EPi Stockholder if the amount of all shares of EPi Common
      Stock sold for the account of such Post-Closing EPi Stockholder within the
      preceding three months shall not exceed the greater of

            (i)   One percent of the shares of EPi Common Stock outstanding as
                  shown by the most recent report or statement filed with the
                  Securities and Exchange Commission by EPi; or

            (ii)  The average weekly reported volume in trading in such
                  securities reported through the automated quotation system of
                  a registered securities association during the four calendar
                  weeks preceding the date of placing the order to execute the
                  transaction with the broker or the date of execution of the
                  transaction directly with a market maker; or

            (iii) The average weekly volume of trading in such securities
                  reported through the consolidated transaction reporting system
                  contemplated by Rule 11Aa3-1 under the Securities Exchange Act
                  of 1934 (Section 240.11A3-1) during the four-week period
                  specified in paragraph (ii) of this Section.



                                        8

<PAGE>   9



      Prior to the expiration of such 365-day period, the undersigned will not
      announce or disclose any intention to do anything after the expiration of
      such period that the undersigned is prohibited, as provided in the
      preceding sentence, from doing during such period except as required by
      applicable law.

11.   SPECIFIC PERFORMANCE. Each of the undersigned acknowledges that damages
      would be an inadequate remedy for any breach of the provisions of this
      Agreement and agrees that the obligations of the Equity Holders and
      Post-Closing EPi Stockholders hereunder shall be specifically enforceable
      and that each party hereto shall be entitled to injunctive or other
      equitable relief upon such a breach by any other party hereto or such
      party's transferees or assigns. Each Equity Holder and Post-Closing EPi
      Stockholder further agrees, on behalf of itself and its transferees and
      assigns, to waive any bond in connection with the obtaining of any such
      injunctive or equitable relief. This provision is without prejudice to any
      other rights that each party hereto may have against another party hereto
      for any failure to perform his, her or its obligations under this
      Agreement.

12.   GOVERNING LAW. This Agreement shall be construed and enforced in
      accordance with the laws of the State of Delaware, without regard to its
      conflicts of laws principles. Each Equity Holder and each Post-Closing EPi
      Stockholder agrees that the provisions of this Agreement shall be binding
      also upon the successors, assigns, transferees, heirs and personal
      representatives of the such Equity Holder or Post-Closing EPi Stockholder.

13.   COUNTERPART AND FACSIMILE SIGNATURES. This Agreement may be executed in
      multiple counterparts, each of which will be deemed to be an original, and
      all such counterparts will constitute but one instrument. This Agreement
      may be executed by any party hereto by facsimile, and each such executed
      counterpart shall be deemed to be validly executed and enforceable against
      each such party in accordance with its terms.


                           [INTENTIONALLY LEFT BLANK]



                                        9

<PAGE>   10



         IN WITNESS WHEREOF, the undersigned have executed this Equity Holder
Agreement as of the day and year first above written.


<TABLE>
<S>                                           <C>
ELECTROPHARMACOLOGY, INC.                     HEALTHTECH DEVELOPMENT, INC.


By:                                           By:
   ---------------------------------             -------------------------------
Its:                                          Its:
    --------------------------------              ------------------------------


GEMINI BIOTECH L.P.                           EPI SUB INC.



By:                                           By:
   ---------------------------------             -------------------------------
Its:                                          Its:
    --------------------------------              ------------------------------

PRE-CLOSING EPI STOCKHOLDERS:


By:                                           By:
   ----------------------------------------      --------------------------------------------
   David Saloff                                  George Levine
   (259,199 shares of EPi Common Stock)          (25,000 shares of EPi Common Stock)



20TH CENTURY ASSOCIATES:                      PARAGON CAPITAL AT
                                              SPEAR, LEEDS & KELLOGG:



By:                                           By:
   ----------------------------------------      --------------------------------------------
   John Banas, President                         George Levine, Chairman
   (250,000 shares of EPi Common Stock)          (604,104 shares of EPi Common Stock)



By:                                           By:
   ----------------------------------------      --------------------------------------------
   Norton Herrick                                Murray Feldman
   (318,950 shares of EPi Common Stock and       (692,361 shares of EPi Common Stock)
   242,950 shares of EPi Preferred Stock)


HTD STOCKHOLDERS:


- -------------------------------------------    ----------------------------------------------
Arup Sen                                       James Kaput
(            shares of HTD Common Stock)       (            shares of HTD Common Stock)
 -----------                                    -----------



- -------------------------------------------    
Richard  Kneipper
(             shares of HTD Common Stock)



GEMINI PARTNERS:



- -------------------------------------------    ----------------------------------------------
Krishna Jayaraman (_% Partnership Interest)    Shashikala Jayaraman (_% Partnership Interest)



GEMINI BIOTECH INC.



By:                                       
   ---------------------------------      
Its:                                      
    --------------------------------      


</TABLE>

                                       10

<PAGE>   11



                                   SCHEDULE A


OUTSTANDING EPi WARRANTS TO BE REDEEMED AND CANCELED


<TABLE>
<CAPTION>
                                         Number of
   Original                                Equity 
     Issue                            Interests (Post-   Exercise     Expiration
     Date             Issued To            split)         Price          Date          Registration Rights/Other Terms
=============== ===================== ================ ============ ============== =====================================
<S>             <C>                   <C>              <C>           <C>            <C>
  08/04/93          M. Feldman             11,622          5.03         08/04/98       Yes (in pre-split agreement only)
  05/25/94          M. Feldman             38,741          5.03         05/25/99       Yes (in pre-split agreement only)
  09/20/94          M. Feldman             23,244          5.03         09/20/99       Yes (in pre-split agreement only)
  05/19/95          Paragon Capital       125,000          7.00         05/12/00       Yes; Section 3.2 - cashless exercise
  05/19/95          Paragon Capital        62,500          6.00         05/12/00       Yes; Section 3.2 - cashless exercise
  11/21/95          M. Feldman            300,000          6.25         11/21/00       Yes
  11/13/95          N. Herrick            800,000          6.00         11/13/05       Yes  
  11/13/95          N. Herrick            250,000          7.50         11/13/05       Yes
  11/13/95          N. Herrick            250,000          9.00         11/13/05       Yes


- --------------- --------------------- ---------------- ------------ -------------- -------------------------------------

</TABLE>


OUTSTANDING EPi PREFERRED EQUITY INTERESTS TO BE REDEEMED AND CANCELED



<TABLE>
<CAPTION>
    Original                                      Number of Equity
  Issue Date              Issued To            Interests (Post-split)        Exercise Price    Expiration Date
================= ========================== =========================== ==============================================
<S>                <C>                        <C> 
11/13/95                  N. Herrick                  242,950                    N/A                    N/A
- ----------------- -------------------------- --------------------------- ----------------------------------------------

</TABLE>


                                       11

<PAGE>   12


                                  SCHEDULE A-1

                              CERTAIN EPi WARRANTS

<TABLE>
<CAPTION>

                                                                                                                 TOTAL NUMBER
  ORIGINAL                                           NUMBER OF                                                    OF COMMON
   ISSUE                                              SHARES              EXERCISE        EXPIRATION              SHARES TO
   DATE                       ISSUED TO            (POST-SPLIT)            PRICE             DATE                 BE ISSUED
- --------------       -----------------------   -----------------  -------------------   ---------------    --------------------
<S>                   <C>                      <C>                 <C>                   <C>                  <C>
  08/04/93                 Murray Feldman              11,622                 5.03          08/04/98
  05/25/94                                             38,741                 5.03          05/25/99
  09/20/94                                             23,244                 5.03          09/20/99
  11/21/95                                            300,000                 6.25          11/21/00               160,000
  05/19/95                Paragon Capital             125,000                 7.00          05/12/00
  05/19/95                                             62,500                 6.00          05/12/00                90,000
  11/13/95                 Norton Herrick             800,000                 6.00          11/13/05
  11/13/95                                            250,000                 7.50          11/13/05
  11/13/95                                            250,000                 9.00          11/13/05             1,575,000*
  12/15/95                MESA Consulting             100,000                 5.79          12/15/00                47,000 
                                                   -----------                                                  -----------
  Total                                             1,961,107                                                    1,872,000
==============       =======================   ==================   ===================  ================  ======================


</TABLE>

- ----------
* Including Common Shares to be issued upon conversion of 242,950 shares of
  Preferred Stock currently held by Mr. Herrick.



                                       12



<PAGE>   13
                       FIRST AMENDMENT TO MASTER AGREEMENT

         THIS FIRST AMENDMENT TO THE MASTER AGREEMENT ("Master Agreement") made
as of June __, 1998, among HEALTHTECH DEVELOPMENT, INC., a Texas corporation
("HTD"), GEMINI BIOTECH L.P., a Texas limited partnership ("Gemini"),
ELECTROPHARMACOLOGY, INC., a Delaware corporation ("EPi"), EPI HEALTHTECH INC.,
a Delaware corporation ("EPi Sub"), certain stockholders of EPi, certain
stockholders of HTD and the partners of Gemini (the "Gemini Partners") is made
as of August __, 1998, among EPi, EPi SUB, GEMINI AND THE GEMINI PARTNERS.

                                    RECITALS

         A. EPi, EPi Sub, Gemini, and the Gemini Partners have agreed that it is
in the best interests of the parties hereto that the Gemini Health Technologies
Contribution Agreement be modified to provide that in lieu of Gemini agreeing to
contribute all its assets and liabilities to the Partnership in exchange for
Partnership Units in the Partnership, Krishna and Shashikala Jayaraman
(collectively, the "Jayaramans") have agreed to contribute all of their
partnership interests in Gemini and 100% of the stock of Gemini Biotech, Inc.
("AGBI") to the Partnership in exchange for Partnership Units in the
Partnership.

         B. EPi, EPi Sub, Gemini and the Gemini Partners have also agreed that
the it is in the best interests of the parties hereto that the Unit Exchange
Agreement entered into among EPI, Gemini and the Partnership be modified so that
the Jayaramans, in lieu of Gemini, shall have certain rights to exchange their
Partnership Units for shares of EPI Common Stock.

         C. This First Amendment to the Master Agreement (the "Amendment")
amends certain agreements of EPi, EPi Sub, Gemini and the Gemini Partners
concerning the election of directors of EPi following the Reorganization
Transactions to provide for the nomination of the two Gemini Nominees by the
Jayaramans in lieu of Gemini.

         IT IS HEREBY AGREED:

         1. Section 2. AGREEMENTS TO VOTE REGARDING BOARD OF DIRECTORS of the
Master Agreement is hereby amended in subsection (a) thereof to replace the
phrase, "two directors (the "Gemini Nominees") shall be nominated by Gemini (the
"Gemini Representative")" with the phrase, "two directors (the "Gemini
Nominees") shall be nominated by Krishna Jayaraman and Shashikala Jayaraman (the
Gemini Representatives")."

         2. In Section 2(f), the word "Gemini" shall be replaced with the words
"Gemini Representatives."



<PAGE>   14


         3. Whenever the words "Gemini Representative" appear in the agreement,
they shall be replaced with the words "Gemini Representatives."

         4. Terms used in this Amendment shall have the same meaning ascribed to
them in the Master Agreement. Other than the specific changes noted herein, all
other terms and conditions of the Master Agreement still remain in force and
effect.




ALL IN WITNESS WHEREOF, the undersigned have executed this Amendment as of the
day and year first above written.


ELECTROPHARMACOLOGY, INC.                  EPI HEALTHTECH INC.



By:                                        By:
   --------------------------------            --------------------------------
Its:                                       Its:
    -------------------------------             -------------------------------



GEMINI BIOTECH L.P.



By:                                 
   -------------------------------- 
Its:                                
    ------------------------------- 


GEMINI PARTNERS

                                    

- -------------------------------------------- 
KRISHNA JAYARAMAN (49% Partnership Interest)



- -------------------------------------------- 
SHASHIKALA JAYARAMAN (49% Partnership Interest)



- -------------------------------------------- 
GEMINI BIOTECH INC. (2% Partnership Interest)


By:                                 
   -------------------------------- 
Its:                                
    ------------------------------- 






<PAGE>   1
                                                                      Exhibit 11

                          REGISTRATION RIGHTS AGREEMENT


         This REGISTRATION RIGHTS AGREEMENT, dated as of July ______, 1998, is
made by and between Electropharmacology, Inc., a Delaware corporation (the
"Company") and the Holders (as hereinafter defined).

         The parties hereto agree as follows:

1.    DEFINITIONS. As used in this Agreement, the following terms have the
      following respective meanings:

      "AGREEMENT" means this Registration Rights Agreement.

      "BUSINESS DAY" means a day other than a Saturday, Sunday, or New York
      State holiday or other day on which commercial banks in New York City are
      authorized or required by law to close.

      "COMMISSION" means the Securities and Exchange Commission.

      "COMMON STOCK" means Common Stock, par value $.01 per share, of the
      Company.

      "COMPANY" shall have the meaning set forth in the preamble and shall
      include the Company's successors.

      "COMPANY BOARD" means the Board of Directors of the Company.

      "COMPANY CERTIFICATE" shall have the meaning assigned thereto in Section
      6.

      "COMPANY INDEMNITEE" shall have the meaning assigned thereto in Section
      11.

      "EXCHANGE ACT" means the Securities Exchange Act of 1934, or any successor
      thereto, as the same shall be amended from time to time.

      "EXCHANGE ACT DOCUMENTS" shall have the meaning assigned thereto in
      Section 5.4(a)(vi).

      "HOLDER" means those persons whose names are set forth on Schedule A
      hereto.

      "HOLDER INDEMNITEE" shall have the meaning assigned thereto in Section 11.

      "INDEMNIFIED PERSON" means a Holder Indemnitee or Company Indemnitee.

      "INDEMNIFYING PERSON" shall have the meaning assigned thereto in Section
      12.

      "PERSON" means a natural person, partnership (whether general or limited),
      limited liability company, trust, estate, association, corporation,
      custodian, nominee or any other individual or entity in its own or any
      representative capacity.




<PAGE>   2



      "PROCESS AGENT" shall have the meaning assigned thereto in Section 19.

      "REGISTERABLE SECURITIES" means those shares of Common Stock set forth
      next to the name of each Holder on Schedule A; PROVIDED, that if
      nationally recognized securities counsel to the Company delivers to the
      Company a written legal opinion to the effect that any particular shares
      of Common Stock may be disposed of by the Holder thereof in the manner
      proposed by such Holder without registration under the Securities Act in
      accordance with Rule 144(k) thereunder, such shares of Common Stock shall
      not be Registerable Securities.

      "RULE 144" shall have the meaning assigned thereto in Section 9.

      "SECURITIES ACT" means the Securities Act of 1933, or any successor
      thereto, as the same shall be amended from time to time.

      "SUSPENSION NOTICE" shall have the meaning assigned thereto in Section
      4(c).

2.    INTERPRETATION. The following provisions shall govern the interpretation
      of this Agreement:

      (a)   The singular form of any word used herein, including the terms
            defined in Section 1.1, shall include the plural, and vice versa,
            unless the context otherwise requires. The use herein of a pronoun
            of any gender shall include correlative words of the other gender.

      (b)   Unless otherwise expressly indicated, all references herein to
            "ARTICLES," "SECTIONS" and other subdivisions hereof are to the
            corresponding Articles, Sections or subdivisions of this Agreement;
            and the words "herein," "hereof", "hereunder" and other words of
            similar import refer to this Agreement as a whole and not to any
            particular Article, Section or subdivision hereof.

      (c)   The headings or titles of the several Articles and Sections hereof,
            and any table of contents appended to copies hereof, shall be solely
            for convenience of reference and shall not affect the meaning,
            construction or effect of this Agreement.

      (d)   Each reference herein to any agreement, instrument or other document
            shall mean such agreement, instrument or document as from time to
            time amended, modified or supplemented in accordance with the terms
            hereof and thereof. The term "including" shall be construed to mean
            "including but not limited to."

3.1   REGISTRATION. The Company shall (a) file with the Commission as soon as
      reasonably practicable a Registration Statement (the "Registration
      Statement") on Form S-1 to register the Registerable Securities in
      connection with their sale by the Holders and (b) use its reasonable
      efforts to have the Registration Statement declared effective by the
      Commission and remain continuously effective for a period of not less than
      one (1) year or, if earlier, until the date on which all Registerable
      Securities covered by such registration have been disposed of by the
      Holders either pursuant to the Registration Statement or otherwise;
      provided, that the Company shall use its reasonable efforts to regain its
      eligibility to use Form S-3 and thereafter to refile the Registration
      Statement on Form S-3 and maintain its effectiveness until all of the
      Holders can resell their shares under Rule 144(k). Such one (1) year
      period shall be extended by (A) the period that any Suspension Notice is
      in effect under


                                        2

<PAGE>   3



      Section 4(c) and (B) the period that any deferral is in effect under
      Section 6. The Company further agrees that if permitted by the rules and
      regulations of the Commission, the registration contemplated by this
      Section 3 shall be made pursuant to Rule 415 of the Securities Act. In the
      event of an underwritten public offering of the Registrable Securities, if
      the underwriters of such offering advise the Company and the Holders in
      writing that in their opinion the amount of the Registrable Securities to
      be included in such offering would adversely affect the success of such
      offering, then the Company shall include, on behalf of such Holders, only
      the amount of Registrable Securities that in the opinion of such
      underwriters, can be sold without any such adverse affect, and such
      securities shall be allocated pro rata among all such Holders. Following
      the period of effectiveness set forth in this Section 3.1 above, at the
      request of any Holder, the Company shall keep the Registration Statement
      effective, subject to the other terms and conditions of this Agreement, so
      long as such Holder (and any other Holders that desire for the
      Registration Statement to remain effective) pays to the Company the cost
      of maintaining the effectiveness of such Registration Statement, which
      costs shall include the cost of legal fees to amend or supplement the
      Registration Statement, accounting fees related to obtaining the auditors'
      consent and any filing fees related thereto, but which costs shall not
      include any costs required to keep the Company in compliance with the
      reporting requirements of the Exchange Act. All Holders who desire to pay
      the costs to keep the Registration Statement effective shall share such
      costs on a pro rata basis based on the number of shares of Common Stock
      covered by the Registration Statement, and the Company shall not be
      required to keep the Registration Statement effective with respect to any
      shares of any Holder who does not agree to pay such costs.

3.2   PIGGYBACK REGISTRATION. In the event that the Registration Statement
      required by Section 3.1 is no longer effective, the Company agrees that
      whenever it proposes to file a registration statement (other than a
      registration statement on Form S-4 or S-8 or any successor forms) for the
      registration of securities of the Company to be sold by the Company or any
      other Person for cash, it will, at least 15 days prior to such filing,
      give written notice to all Holders of its intention to do so and, upon the
      written request of a Holder given within 10 days after the Company
      provides such notice (which request shall state the number and intended
      method of disposition of such Registrable Securities), the Company shall
      use its best efforts to cause all Registrable Securities which the Company
      has been requested by such Holder to be registered under the Securities
      Act to the extent necessary to permit their sale or other disposition in
      accordance with the intended methods of distribution specified in the
      request of such Holder; PROVIDED, HOWEVER, that the Company shall have the
      right to postpone or withdraw any registration effected pursuant to this
      Section 3.2 without any obligation to any Holder whatsoever. In the event
      of an underwritten public offering of the Registrable Securities, if the
      underwriters of such offering advise the Company and the Holders in
      writing that in their opinion the amount of the Registrable Securities to
      be included in such offering would adversely affect the success of such
      offering, then the Company shall include, on behalf of such Holders, only
      the amount of Registrable Securities that in the opinion of such
      underwriters, can be sold without any such adverse affect, and such
      securities shall be allocated pro rata among all such Holders.




                                        3

<PAGE>   4

4.    REGISTRATION STATEMENT.

      (a) In connection with the obligations of the Company under Section 3, the
      Company shall:

            (i)   prepare and file with the Commission such amendments and
                  supplements to the Registration Statement and the prospectus
                  as may be necessary to maintain the effectiveness of the
                  Registration Statement for the period required by Section 3
                  and to comply with the provisions of the Securities Act with
                  respect to the sale or other disposition of the Registrable
                  Securities covered by the Registration Statement;

            (ii)  for a reasonable period prior to the filing of the
                  Registration Statement, and throughout the period of
                  effectiveness required by Section 3 upon reasonable notice,
                  make available for inspection by a representative of the
                  Holders, any underwriter participating in any distribution
                  pursuant to the Registration Statement, and any attorney or
                  accountant designated by the Holders, at a reasonable time and
                  in a reasonable manner, financial and other information and
                  books and records of the Company, and cause the officers,
                  directors and employees of the Company to respond to such
                  inquiries and supply information reasonably requested by any
                  such representative, underwriter, attorney or accountant in
                  the course of conducting a reasonable investigation within the
                  meaning of Section 11(b) of the Securities Act; PROVIDED,
                  HOWEVER, that such representatives, attorneys or accountants
                  shall be acceptable to the Company in its judgment reasonably
                  exercised and shall agree to enter into written
                  confidentiality agreements acceptable to the Company regarding
                  any records, information or documents that are designated by
                  the Company as confidential unless such records, information
                  or documents are available to the public or disclosure of such
                  records, information or documents is required by court or
                  administrative order after the exhaustion of appeals therefrom
                  and to use such information obtained pursuant to this
                  provision only in connection with the transaction for which
                  such information was obtained, and not for any other purpose;

            (iii) promptly advise the Holders, and the managing underwriter or
                  underwriters, if any, and confirm such advice in writing when,
                  to its knowledge, (A) the Registrable Securities or supplement
                  or post-effective amendment has been declared or becomes
                  effective, (B) the Commission has issued any stop order
                  suspending the effectiveness of the Registration Statement or
                  has initiated or threatened any proceedings for that purpose,
                  (C) the qualification of the Registrable Securities for sale
                  in any jurisdiction has been suspended or any proceeding for
                  such purpose has been initiated or threatened, or (D) any
                  event has occurred that makes any statement made in the
                  Registration Statement or the related prospectus untrue in any
                  material respect or that requires the making of any changes in
                  the Registration Statement or prospectus in order to make the
                  statements therein not misleading;

            (iv)  upon the occurrence of any event contemplated by Section
                  4(a)(iii)(D) hereof, use its reasonable efforts , as promptly
                  as possible, to prepare and distribute to the Holders, and the
                  managing underwriter or underwriters, if any, and file with
                  the Commission, as applicable, a supplement or post-effective
                  amendment to the Registration Statement or the prospectus
                  contained therein or any document incorporated therein by
                  reference or distribute or file any other required document so
                  that, as thereafter delivered to the purchasers of the
                  Registrable Securities, such prospectus will not contain any
                  untrue statement of a material fact or omit to state a
                  material fact necessary to make the statements therein not
                  misleading;


                                        4

<PAGE>   5



            (v)   use its reasonable efforts to obtain the withdrawal of any
                  order suspending the effectiveness of the Registration
                  Statement or any post-effective amendment thereto at the
                  earliest practicable date;

            (vi)  provide copies of any prospectus, any amendment to the
                  Registration Statement or amendment or supplement to any
                  prospectus or any document that is to be incorporated by
                  reference into the Registration Statement or any prospectus
                  after initial filing of the Registration Statement, a
                  reasonable time prior to the filing of any such prospectus,
                  amendment, supplement or document, to the Holders and
                  underwriters, if any, and make the representatives of the
                  Company available on a reasonable basis if reasonably
                  requested by the Holders; PROVIDED that the requirements of
                  this paragraph shall not apply to documents filed pursuant to
                  Sections 13(a), 13(c), 14 or 15(d) of the Exchange Act (the
                  "EXCHANGE ACT DOCUMENTS"); and PROVIDED FURTHER that the
                  Company shall promptly notify Holders of the filing of any
                  Exchange Act Documents except for such Exchange Act Documents
                  specifically related to the offering of other securities and
                  not to the Registerable Securities;

            (vii) furnish to each Holder and to each underwriter and selling
                  agent, if any, at the expense of the Holders as many copies of
                  the prospectus, including each preliminary prospectus, and any
                  amendment or supplement thereto and such other documents as
                  such Holder or managing underwriter may reasonably request, in
                  order to facilitate the public sale or other disposition of
                  the Registrable Securities;

           (viii) use its reasonable efforts to (A) register or qualify the
                  Registrable Securities to be included in the Registration
                  Statement under such securities laws or blue sky laws of such
                  jurisdictions as any Holders and each placement or sales
                  agent, if any, therefor and each underwriter, if any, thereof
                  shall reasonably request in writing on a timely basis, (B)
                  take any and all other actions as may be reasonably necessary
                  or advisable to enable each such holder, agent if any, and
                  each underwriter, if any, to consummate the disposition in
                  such jurisdictions of the Registrable Securities; PROVIDED
                  that the Company shall not be required for any such purpose to
                  (A) qualify as a foreign corporation or foreign limited
                  partnership in any jurisdiction wherein it would not otherwise
                  be required to qualify but for the requirements of this
                  paragraph 4(a)(viii), (B) file a general consent to service of
                  process in any such jurisdiction, (C) subject itself to
                  taxation in any jurisdiction where it is not already subject
                  to taxation or (D) make any changes to its Certificate of
                  Incorporation or Bylaws, or any agreement between it and its
                  stockholders;

            (ix)  use its reasonable efforts to obtain the consent or approval
                  of each governmental agency or authority, whether federal,
                  state or local, that may be required to effect the
                  registration or the offering or sale in connection therewith
                  or to enable the Holders to offer, or to consummate the
                  disposition of, their Registrable Securities;

            (x)   furnish to each Holder, without charge, at least three (3)
                  conformed copies of the Registration Statement and any
                  post-effective amendment thereto (without documents
                  incorporated therein by reference or exhibits thereto, unless
                  requested);



                                        5

<PAGE>   6



            (xi)  cooperate with the Holders and the managing underwriters, if
                  any, to facilitate the timely preparation and delivery of
                  certificates representing the Registrable Securities to be
                  sold, which shall not bear any restrictive legends; and, in
                  the case of an underwritten offering, enable such Registrable
                  Securities to be in such denominations and registered in such
                  names as the managing underwriters may request at least two
                  Business Days prior to any sale of the Registrable Securities;
                  and

            (xii) enter into and deliver all such customary agreements
                  (including underwriting or purchase agreements), documents and
                  take such other actions (including causing the delivery of
                  opinions of counsel and "comfort" letters of independent
                  certified public accountants) as are reasonably requested of
                  the Company to expedite or facilitate the disposition of the
                  Registrable Securities.

      (b)   Each Holder shall provide the Company with all assistance reasonably
            necessary for the Company to comply with its obligations under this
            Agreement. Without limiting the generality of the foregoing
            provision, the Holders shall cause any entity that is controlled by
            one or more of them, individually or together, to use all reasonable
            efforts to provide the financial statements and other information
            about such entity that is required to be included in the
            Registration Statement.

      (c)   Each Holder, upon receipt of any (i) notice from the Company of the
            happening of any event of the kind described in Section 4(a)(iii)
            (B), (C) or (D), (ii) notice from the Company that it is in
            possession of material information that has not been disclosed to
            the public and the Company reasonably deems it to be advisable not
            to include such information in the Registration Statement or (iii)
            notice from the Company that it is in the process of an underwritten
            registered offering of securities and the Company reasonably deems
            it to be advisable, based on the written request of the managing
            underwriter thereof, to have Holders temporarily discontinue
            distribution of the Registrable Securities pursuant to the
            Registration Statement (in each case, such notice being hereinafter
            referred to as a "SUSPENSION NOTICE"), such Holder will forthwith
            discontinue distribution of the Registrable Securities pursuant to
            the Registration Statement and shall not be entitled to the benefits
            provided in this Agreement with respect to any sales made by it in
            contravention of this subsection, until such Holder's receipt of the
            copies of the supplemented or amended prospectus or a notice from
            the Company that any order suspending the effectiveness of the
            Registration Statement has been withdrawn, or, in the case of (ii)
            or (iii) above, until further notice from the Company that
            disposition of Registerable Securities may resume, which shall be,
            in the case of (ii) above, a date no later than ninety (90) days
            after receipt of such notice, or, in the case of (iii) above, until
            a date no later than thirty (30) days after the date on which such
            offering is completed. Any Suspension Notice must be based upon a
            good faith determination of the Company Board that such Suspension
            Notice is reasonably necessary. In the case of a Suspension Notice,
            if so directed by the Company, each Holder shall deliver to the
            Company all copies in its possession, other than permanent file
            copies then in such Holder's possession, of the prospectus covering
            the offer and sale of the Registrable Securities that is current at
            the time of receipt of such notice. If the Company shall give any
            such notice to suspend the distribution of the Registrable
            Securities pursuant to any Registration Statement, the Company shall
            extend the period during which the


                                        6

<PAGE>   7



            Registration Statement shall be maintained effective pursuant to
            this Agreement by the number of days during the period from and
            including the date of the giving of such notice to and including the
            date when the Holders shall have received copies of the supplemented
            or amended prospectus necessary to resume such dispositions or
            received notice from the Company that any order suspending
            dispositions of the Registrable Securities has been withdrawn.

      (d)   Each Holder shall (i) furnish in writing to the Company such
            information regarding such Holder and such Holder's intended method
            of distribution of its Registrable Securities as the Company may
            from time to time reasonably request in writing, and (ii) enter into
            and deliver all such customary agreements (including underwriting or
            purchase agreements) and documents (including legal opinions) as are
            reasonably requested of such Holder to expedite or facilitate the
            disposition of its Registrable Securities. Each such Holder shall
            notify the Company as promptly as practicable of any inaccuracy or
            change in information previously furnished by such Holder to the
            Company or of the occurrence of any event in either case as a result
            of which any prospectus relating to such registration contains or
            would contain an untrue statement of a material fact regarding such
            Holder or such Holder's intended method of distribution of its
            Registrable Securities or omits to state any material fact regarding
            such Holder or such Holder's intended method of distribution of its
            Registrable Securities required to be stated therein or necessary to
            make the statements therein not misleading and promptly to furnish
            to the Company any additional information required to correct and
            update any previously furnished information or otherwise required so
            that such prospectus shall not contain, with respect to such Holder
            or the distribution of its Registrable Securities, an untrue
            statement of a material fact or omit to state a material fact
            required to be stated therein or necessary to make the statements
            therein not misleading. Each such Holder shall comply with the
            provisions of the Securities Act and the Exchange Act applicable to
            such Holder with respect to the disposition by such Holder of the
            Registrable Securities covered by the Registration Statement in
            accordance with the intended methods of disposition by such Holder
            set forth in the Registration Statement.

5.    REGISTRATION OF ADDITIONAL SECURITIES. The Registration Statement may, in
      addition to the Registrable Securities, include other securities for sale
      for the Company's own account or for the account of any other Person.

6.    REGISTRATION DEFERRAL PERIOD. If the Company shall furnish to the Holders
      a certificate (the "COMPANY CERTIFICATE") signed by the Chief Executive
      Officer of the Company stating that, in the good faith judgment of the
      Company Board, acting reasonably and in the best interest of the Company,
      it would be detrimental to the Company and its stockholders for the
      Holders to sell the Registrable Securities under any such Registration
      Statement and it is therefore necessary to suspend the ability of the
      Holders to sell the Registrable Securities under the Registration
      Statement, the ability of such Holders to sell the Registrable Securities
      shall be suspended, for a period of not more than an aggregate of ninety
      (90) days from the date of the Company Certificate; PROVIDED HOWEVER, that
      the Company may not utilize this right more than one time in any
      twelve-month period. Upon receipt of a Company Certificate, each Holder
      shall refrain from disposing of its Registrable Securities during the
      above stated ninety (90) day period.



                                        7

<PAGE>   8



7.    EXPENSES. All registration expenses incurred in connection with any
      registration, qualification or compliance pursuant to Sections 3 or 4,
      including all registration and filing fees, printing expenses, fees and
      disbursements of counsel for the Company and of the Company's accountants,
      blue sky fees and expenses and the expenses of any special audits incident
      to or required by any such registration, shall be borne by such Holder pro
      rata on the basis of the number of shares of the Registrable Securities of
      such Holder included in such registration and such Holder shall pay its
      own selling expenses. Selling expenses shall mean all costs and
      commissions applicable to the sale of the Registrable Securities and all
      fees and disbursements of Holder's counsel and other professionals. To the
      extent that the Company registers a primary offering of additional
      securities pursuant to Section 5, the Company shall bear its pro rata
      share of the above-referenced registration expenses and its own selling
      expenses.

8.    LISTING. The Company shall use its reasonable efforts to list all
      Registrable Securities on each securities exchange or automated quotation
      system on which any of the Common Stock is then listed .

9.    RULE 144 INFORMATION. With a view to making available to the Holders the
      benefits of Rule 144 under the Securities Act ("RULE 144") and any other
      rule or regulation of the Commission that may at any time permit a Holder
      to sell shares of Common Stock that are restricted securities to the
      public without registration, the Company agrees to: (a) make and keep
      public information available, as required by Rule 144; (b) use its
      reasonable efforts to file with the Commission in a timely manner all
      reports and other documents required of the Company under the Securities
      Act and the Exchange Act; and (c) furnish to any Holder forthwith upon
      request (i) a written statement by the Company that it has complied with
      the reporting requirements of Rule 144, the Securities Act and the
      Exchange Act and (ii) a copy of the most recent annual or quarterly report
      of the Company and such other reports and documents so filed by the
      Company.

10.   INDEMNIFICATION. The Company shall indemnify and hold harmless each
      Holder, officer or director of any Holder, affiliate of any Holder or any
      Person deemed to control any Holder (a "Holder Indemnitee") against any
      losses, claims, damages or liabilities, joint or several, to which such
      Holder Indemnitee may become subject, under the Securities Act or
      otherwise, that directly or indirectly arise out of or are based upon an
      untrue statement or alleged untrue statement of a material fact contained
      in any preliminary prospectus, the Registration Statement or the
      prospectus, or any amendment or supplement thereto, or arise out of or are
      based upon the omission or alleged omission to state therein a material
      fact required to be stated therein or necessary to make the statements
      therein not misleading, and will reimburse such Holder Indemnitee for any
      legal or other expenses reasonably incurred by such Holder Indemnitee in
      connection with investigating or defending any such action or claim as
      such expenses are incurred; PROVIDED, HOWEVER, that the Company shall have
      no liability hereunder to the extent that any such loss, claim, damage or
      liability arises out of or is based upon (a) an untrue statement or
      alleged untrue statement or omission or alleged omission made in any
      preliminary prospectus, the Registration Statement or the prospectus or
      any such amendment or supplement in reliance upon and in conformity with
      written information furnished to the Company by such Holder Indemnitee
      expressly for use therein, or (b) the failure of a Holder Indemnitee to
      deliver the most recent version of the prospectus that is a part of the
      Registration Statement.



                                        8

<PAGE>   9



11.   INDEMNIFICATION BY HOLDERS. Each Holder shall cause each Holder Indemnitee
      to indemnify and hold harmless the Company, the Company's officers and
      directors, affiliates of the Company and any Person deemed to control the
      Company (a "Company Indemnitee") against any losses, claims, damages or
      liabilities, joint or several, to which such Company Indemnitee may become
      subject, under the Securities Act or otherwise, that directly or
      indirectly arise out of or are based upon an untrue statement or alleged
      untrue statement of a material fact contained in any preliminary
      prospectus, the Registration Statement or the prospectus, or any amendment
      or supplement thereto, or arise out of or are based upon the omission or
      alleged omission to state therein a material fact required to be stated
      therein or necessary to make the statements therein not misleading and
      reimburse each Company Indemnitee for any legal or other expenses
      reasonably incurred by such Company Indemnitee in connection with
      investigating or defending any such action or claim as such expenses are
      incurred, in each case to the extent, but only to the extent, that such
      untrue statement or alleged untrue statement or omission or alleged
      omission was made in any preliminary prospectus, the Registration
      Statement or the prospectus or any such amendment or supplement in
      reliance upon and in conformity with written information furnished to the
      Company by such Holder Indemnitee expressly for use therein.

12.   PROCEEDINGS. Promptly after receipt by an Indemnified Person of notice of
      the commencement of any action, suit or proceeding as to which a claim in
      respect thereof is to be made under Section 11 the Indemnified Person
      shall notify the party against whom the Indemnified Person intends to
      assert a claim for indemnification (an "INDEMNIFYING PERSON") in writing
      of the commencement thereof, but the omission so to notify the
      Indemnifying Person shall not relieve the Indemnifying Person from any
      liability that it may have to any Indemnified Person except to the extent
      the Indemnifying Person is prejudiced thereby. In case any such action
      shall be brought against any Indemnified Person and it shall notify the
      Indemnifying Person of the commencement thereof, the Indemnifying Person
      shall be entitled to participate therein and, to the extent that it shall
      wish, to assume the defense thereof, with counsel chosen by the
      Indemnifying Person, and, after notice from the Indemnifying Person to
      such Indemnified Person of its election so to assume the defense thereof,
      the Indemnifying Person shall not be liable to such Indemnified Person
      under this Section 12 for any legal expenses of other counsel or any other
      expenses, in each case subsequently incurred by such Indemnified Person,
      in connection with the defense thereof other than reasonable costs of
      investigation; PROVIDED HOWEVER, that an Indemnified Party shall have the
      right to retain its own counsel, with the fees and expenses to be paid by
      the Indemnifying Party, if the Indemnified Party reasonably believes based
      upon a written opinion of counsel that representation of the Indemnified
      Party by the counsel retained by the Indemnifying Party would be
      inappropriate due to actual or potential differing interests between such
      Indemnified Party and any other party represented by such counsel in such
      proceeding. No Indemnified Person shall effect the settlement or
      compromise of, or consent to the entry of any judgement with respect to,
      any pending or threatened action or claim in respect of which
      indemnification or contribution has been or may be sought hereunder
      without the prior written consent of the Indemnifying Person and no
      Indemnifying Person shall have any liability whatsoever in connection with
      any settlement, compromise or consent entered into without such prior
      written consent.

13.   CONTRIBUTION. In order to provide for just and equitable contribution in
      circumstances in which the indemnity agreement provided for in Section 11
      is for any reason held to be unenforceable by an Indemnified Person
      although applicable in accordance with its terms, the Indemnified Person
      on the one hand and the Indemnifying Person on the other hand shall
      contribute to the aggregate losses,


                                        9

<PAGE>   10



      liabilities, claims, damages and expenses of the nature contemplated by
      such indemnity agreement incurred by the Indemnified Person; PROVIDED,
      HOWEVER, that no Person guilty of fraudulent misrepresentation (within the
      meaning of Section 11(f) of the Securities Act) shall be entitled to
      contribution from any Person who was not guilty of such fraudulent
      misrepresentation. As between the Indemnifying Person and each Indemnified
      Person, such parties shall contribute to the aggregate losses,
      liabilities, claims, damages and expenses of the nature contemplated by
      such indemnity agreement in such proportion as shall be appropriate to
      reflect the relative benefits received by the Indemnifying Person on the
      one hand and the Indemnified Person on the other hand, from the offering
      of the Registrable Securities, the relative fault of the Indemnifying
      Person on the one hand and the Indemnified Person on the other, with
      respect to the statements or omissions that resulted in such loss,
      liability, claim, damage or expense, or action in respect thereof and any
      other relevant equitable considerations. It is agreed that it would not be
      just and equitable if contribution pursuant to this Section 13 were to be
      determined by pro rata allocation or by any other method of allocation
      that does not take into account the relevant equitable considerations. For
      purposes of this Section 13, each Person, if any, who controls a party
      shall have the same rights to contribution as such party.

14.   SUCCESSORS AND ASSIGNS. This Agreement shall inure to the benefit of and
      be binding upon the successors and permitted assigns of each of the
      parties; PROVIDED that this Agreement may not be assigned by any party
      hereto other than in compliance with the terms hereof.

15.   NOTICES. All notices and other communications provided for in this
      Agreement shall be in writing, and shall be sufficiently given if made (a)
      by hand delivery or by telecopier and (b) by reputable express courier
      service (charges prepaid) or by registered or certified mail (postage
      prepaid and return receipt requested) (i) if to the Company, at the
      following address:

                           Electropharmacology, Inc.
                           2301 NW 33rd Court
                           Suite 102
                           Pompano Beach, Florida 33060
                           Attention: Chief Executive Officer
                           Phone: (954) 975-9818
                           Facsimile: (954) 975-4021

      or (ii) if to a Holder, at the address set forth for such Holder on
      Schedule A.

      All such notices and other communications shall be deemed to have been
      duly given and delivered: when delivered by hand, if personally delivered;
      when receipt acknowledged, if delivered by telecopier; two (2) Business
      Days after being deposited with a reputable express courier service
      (charges prepaid); and five (5) Business Days after being deposited in the
      mail, postage prepaid if delivered by United States mail (registered or
      certified mail, return receipt requested).

16.   COUNTERPARTS. This Agreement may be executed in one or more counterparts,
      each of which shall be deemed an original and all of which together shall
      be considered one and the same agreement.

17.   ENTIRE AGREEMENT. This Agreement constitutes the entire understanding of
      the parties hereto with respect to the subject matter hereof and
      supersedes any prior understanding among such parties.



                                       10

<PAGE>   11



18.   GOVERNING LAW; SEVERABILITY. THIS AGREEMENT SHALL BE GOVERNED BY AND
      CONSTRUED AND ENFORCED IN ACCORDANCE WITH THE DOMESTIC LAWS OF THE STATE
      OF DELAWARE WITHOUT GIVING EFFECT TO ANY CHOICE OF LAW OR CONFLICT OF LAW
      PROVISION OR RULE (WHETHER OF THE STATE OF DELAWARE OR ANY OTHER
      JURISDICTION) THAT WOULD CAUSE THE APPLICATION OF THE LAWS OF ANY
      JURISDICTION OTHER THAN THE STATE OF DELAWARE. If it shall be determined
      by a court of competent jurisdiction that any provision or wording of this
      Agreement shall be invalid or unenforceable under applicable law, such
      invalidity or unenforceability shall not invalidate this entire Agreement.
      In that case, this Agreement shall be construed so as to limit any term or
      provision so as to make it enforceable or valid within the requirements of
      any applicable law, and, in the event such term or provision cannot be so
      limited, this Agreement shall be construed to omit such invalid or
      unenforceable provisions.

19.   JURISDICTION AND SERVICE OF PROCESS. Any suit, action or proceeding
      against any party with respect to this Agreement and any Holder or Holder
      may be brought in a court of the United States sitting in the State of
      Delaware or, if jurisdiction is lacking in such a court, in a court of
      record in the State of Delaware, and each party hereto, and each Holder
      (a) irrevocably waives, to the fullest extent permitted by law, any
      objection that it may have, whether now or in the future, to the laying of
      venue in, or to the jurisdiction of, any and each of such courts for the
      purpose of any such suit, action, proceeding or judgment and further
      waives any claim that any such suit, action, proceeding or judgment has
      been brought in an inconvenient forum, and submits to such jurisdiction,
      (b) agrees that service of all writs, process and summonses in any such
      suit, action or proceeding brought in the State of Delaware may be made
      upon The Corporation Trust Company, 1209 Orange Street, Wilmington,
      Delaware 19801, or such alternate process agent in the United States
      designated with respect to the party, or such Holder in a writing
      delivered to the Company (THE "PROCESS AGENT"), (c) irrevocably appoints
      the Process Agent in its name, place and stead to receive and forward such
      service of any and all such writs, process and summonses, (d) agrees that
      the failure of the Process Agent to give any notice of any such service of
      process to such party or such Holder or shall not impair or affect the
      validity of such service or of any judgment based thereon and (e) agrees
      to appoint a substitute process agent, if the Process Agent is no longer
      able to so act for any reason whatsoever, which substitute process agent
      shall thereafter be deemed to be the Process Agent hereunder and to give
      notice of such appointment to the Company.




                                       11

<PAGE>   12


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

                                             Electropharmacology, Inc.

                                             By:
                                                --------------------------------
                                                Name:  Arup Sen
                                                Title:   Chairman and CEO

PRE-CLOSING EPi STOCKHOLDERS:

PARAGON CAPITAL AT
SPEAR, LEEDS & KELLOGG:


By:
   ----------------------------------
   George Levine, Chairman



By:                                          By:
   ----------------------------------           --------------------------------
   Norton Herrick                               Murray Feldman



HTD STOCKHOLDERS:


By:                                          By:
   ----------------------------------           --------------------------------
   Arup Sen                                     James Kaput


By:                          
   ----------------------------------
     Richard Kneipper



GEMINI PARTNERS:


By:                                          By:
   ----------------------------------           --------------------------------
   Krishna Jayaraman                            Shashikala Jayaraman



                                       12




<PAGE>   1
                                                                      Exhibit 12



                                                   July 27, 1998


Mr. Murray Feldman
8 Pilgrim Run
East Brunswick, NJ  08816

Dear Mr. Feldman:

         Reference is made to the Master Agreement dated as of June 1998 (the
"Master Agreement") among HealthTech Development, Inc., Gemini Biotech L.P.,
Electropharmacology, Inc. ("EPi"), EPi Sub, Inc. and certain stockholders and
partners of such entities named therein. Capitalized terms used herein and not
defined have the meanings ascribed to them in the Master Agreement.

         Pursuant to Section 2 of the Master Agreement, the EPi Representatives
have the right to nominate two directors to the Board of Directors of EPi. In
the selection of such nominees pursuant to Section 2 of the Master Agreement,
Norton Herrick hereby agrees to support the nomination of, and to vote his
shares of EPi in favor of, a person nominated by Murray Feldman, and Murray
Feldman hereby agrees to support the nomination of, and to vote his shares of
EPi in favor of, a person nominated by Norton Herrick.

         Please acknowledge your agreement with the foregoing by signing in the
space provided below and returning a copy to me by fax and overnight courier.


                                                  Best regards,

                                                  /s/ Norton Herrick

                                                  Norton Herrick


Agreed and Accepted



/s/ Murray Feldman
- -------------------------------
Murray Feldman



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