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                                                                     EXHIBIT 24B

                           SPECIAL POWER OF ATTORNEY

     KNOW ALL MEN BY THESE PRESENTS, that the undersigned, constitutes and 
appoints JOSEPH HINES, as his true and lawful attorney-in-fact and agent 
with full power of substitution and resubstitution, for him and in his name, 
place and stead, in any and all capacities, to sign the Annual Report on Form 
10-K for the fiscal year ended July 31, 1998, for filing with the Securities 
and Exchange Commission by Zila, Inc., a Delaware corporation, together with 
any and all amendments to such Form 10-K, and to file the same with all 
exhibits thereto, and all documents in connection therewith, with the 
Securities and Exchange Commission, granting to such attorney-in-fact and 
agents full power and authority to do and perform each and every act and thing 
requisite and necessary to be done in and about the premises, as fully and to 
all intents and purposes as he might or could do in person, hereby ratifying 
and confirming that such attorney-in-fact and agent, may lawfully do or cause 
to be done by virtue hereof.

DATED: October 27, 1998

                                      /s/ BRADLEY C. ANDERSON
                                   -------------------------------
                                          BRADLEY C. ANDERSON 

STATE OF ARIZONA
                    ss.
County of Maricopa

     On this 27th day of October, 1998, before me, the undersigned Notary 
Public, personally appeared BRADLEY C. ANDERSON, known to me to be the person 
whose name is subscribed to the within instrument and acknowledged that he
executed the same for the purposes therein contained.

     IN WITNESS WHEREOF, I hereunto set my hand and official seal.

                                          /s/ JANICE BACKUS
                                   -------------------------------
                                           Notary Public

My commission expires:

October 23, 2001