UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

PROXY STATEMENT PURSUANT TO SECTION 14(a) OF THE
SECURITIES EXCHANGE ACT OF 1934

Filed by the Registrant þ
Filed by a Party other than the Registrant o
Check the appropriate box:
o Preliminary Proxy Statement
o Definitive Proxy Statement
o Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
þ Definitive Additional Materials
o Soliciting Material Pursuant to sec. 240.14a-11(c) or sec. 240.14a-12

AVANIR PHARMACEUTICALS

N/A
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

þ		Fee not required.
o		Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

			(1	)		Title of each class of securities to which transaction applies.
			(2	)		Aggregate number of securities to which transaction applies.
			(3	)		Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):
			(4	)		Proposed maximum aggregate value of transaction.
			(5	)		Total fee paid.

o		Fee paid previously with preliminary materials.
o		Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

			(1	)		Amount Previously Paid.
			(2	)		Form, Schedule or Registration State No.:
			(3	)		Filing Party:
			(4	)		Date Filed:

 

 

[Avanir Pharmaceuticals Letterhead]

IMPORTANT REMINDER TO SHAREHOLDERS

February 6, 2008

Dear Shareholder:

Proxy Material for the annual meeting of shareholders of Avanir Pharmaceuticals (the “Company” or “Avanir”) was sent to you recently. According to our records, your proxy for this meeting, which will be held on Thursday, February 21, 2008, has not been received.

IMPORTANT RECENT DEVELOPMENT

Regardless of the number of shares you own, it is important that they are represented and voted at the annual meeting. ACCORDINGLY, PLEASE TAKE A MOMENT NOW TO VOTE BY ANY OF THE THREE METHODS IDENTIFIED BELOW:

1.

Vote by telephone:      Call 1-800-714-3312. Have your 12-digit control number listed on your Voting Instruction Form available and follow the simple instructions.

2.

Vote by Internet:      Go to www.proxyvote.com. Have your 12-digit control number listed on your Voting Instruction Form available and follow the simple instructions.

3.

Vote by Mail:      Vote, sign, date and mail the enclosed proxy in the postage-paid envelope included for your convenience.

Thank you for your response.