EXHIBIT 10.36 Page 1 MODIFICATION TO PROMISSORY NOTE WHEREAS, on February 20, 1996, Lee Pharmaceuticals ("Maker") and Mark DiSalvo ("Holder") entered into an agreement ("Note") whereby Lee Pharmaceuticals was to pay to Mark DiSalvo the sum of One...

                                                            EXHIBIT 10.36
                                                              Page 1
                                           
                                           
                           MODIFICATION TO PROMISSORY NOTE
                                           



    WHEREAS, on February 20, 1996, Xxx Pharmaceuticals ("Maker") and Xxxx 
XxXxxxx ("Holder") entered into an agreement ("Note") whereby Xxx 
Pharmaceuticals was to pay to Xxxx XxXxxxx the sum of One Hundred Thousand 
Dollars; and

    WHEREAS, the parties thereto now desire to further modify said Note;
    
    NOW, THEREFORE, the parties modify said Note as follows:
    
    1.   The maturity date of the Note is extended from February 20, 1997, 
until December 1, 1998.
    
    2.   The per annum interest rate has been increased from 15% to 20% 
effective November 1, 1997.
    
    3.   All other terms and conditions of the Note remain the same.
    
     Date this 13 day of February, 1997.
     
     
     
                                                 Xxxxxx X. Xxx  
                                         ------------------------------
                                         Xxx Pharmaceuticals
                                         By:  Xxxxxx X. Xxx, President
     
     
     
                                                   Xxxx XxXxxxx
                                         ------------------------------
                                         Xxxx XxXxxxx