EXHIBIT 99.4

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

     In connection with the Annual Report of Zila, Inc.(the "Company") on Form
10-K for the period ended July 31, 2002 as filed with the Securities and
Exchange Commission on November 13, 2002, as amended by this Form 10-K/A filed
on the date hereof (the "Report"), I, Bradley C. Anderson, Chief Financial
Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted
pursuant to Section 906 of the Sarbanes-Oxly Act of 2002, that to the best of my
knowledge:

     (1)  The Report fully complies with the requirements of section 13 (a) or
          15 (d) of the Securities Exchange Act of 1934; and
     (2)  The information contained in the Report fairly presents, in all
          material respects, the financial condition and results of operations
          of the Company.

/s/ Bradley C. Anderson
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Chief Financial Officer
November 29, 2002

This certification accompanies this Report pursuant to Section 906 of the
Sarbanes-Oxley Act of 2002 and shall not be deemed filed by the Company for
purposes of Section 18 of the Securities Exchange Act of 1934, as amended.