EXHIBIT 32.1
CERTIFICATION PURSUANT TO SECTION 906 OF
THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. SECTION 1350)
THE SARBANES-OXLEY ACT OF 2002 (18 U.S.C. SECTION 1350)
In connection with the accompanying Annual Report of AVANIR Pharmaceuticals (the “Company”) on Form 10-K/A for the fiscal year ended September 30, 2008 (the “Report”), I, Keith A Katkin, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:
(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.
Dated: December 24, 2008
| /s/ Keith A. Katkin | ||||
| Keith A. Katkin | ||||
| President and Chief Executive Officer [Principal Executive Officer] | ||||