Basis of Presentation

9 Months Ended

Jun. 30, 2011

Basis of Presentation [Abstract]

BASIS OF PRESENTATION

1. BASIS OF PRESENTATION

     The accompanying unaudited condensed consolidated financial statements of Avanir Pharmaceuticals, Inc. (“Avanir”, “we”, or the “Company”) have been prepared in accordance with the rules and regulations of the Securities and Exchange Commission (“SEC”) for interim reporting including the instructions to Form 10-Q. These condensed consolidated financial statements do not include all disclosures for annual audited financial statements required by accounting principles generally accepted in the United States of America (“U.S. GAAP”) and should be read in conjunction with the Company’s audited consolidated financial statements and related notes included in the Company’s Annual Report on Form 10-K for the year ended September 30, 2010. The Company believes these condensed consolidated financial statements reflect all adjustments (consisting only of normal, recurring adjustments) that are necessary for a fair presentation of the financial position and results of operations for the periods presented. Results of operations for the interim periods presented are not necessarily indicative of results to be expected for the year.

     The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts and the disclosures of commitments and contingencies in the financial statements and accompanying notes. Actual results could differ from those estimates.

     Certain amounts in the accompanying condensed consolidated financial statements have been reclassified to conform with the current period presentation.