AVANIR Pharmaceuticals Invites Investors to Second Quarter Conference Call

ALISO VIEJO, Calif., April 29, 2008AVANIR Pharmaceuticals (NASDAQ: AVNR) today announced that it will release complete financial results for the three and six months ended March 31, 2008 before market open on Tuesday, May 13, 2008. Keith Katkin, President and Chief Executive Officer, Randall Kaye, M.D., Senior Vice President and Chief Medical Officer, and Christine Ocampo, Vice President, Finance, will host an investment community conference call that same day at 8:00 a.m. Pacific time / 11:00 a.m. Eastern time to discuss those results and answer questions.

Investors are invited to listen to the live webcast by visiting AVANIR's corporate website at www.avanir.com. To listen to the live call, please go to AVANIR's website prior to the start of the call to register, download and install the necessary audio software.

An archived copy of the webcast will be available on AVANIR's website for 30 days, and a telephone replay will be available through May 18, 2008, by dialing (800) 642-1687 (domestic) or (706) 645-9291 (international) and entering the conference ID number 44842335.

About AVANIR

AVANIR Pharmaceuticals is focused on acquiring, developing, and commercializing novel therapeutic products for the treatment of chronic diseases. AVANIR's products and product candidates address therapeutic markets that include the central nervous system, inflammation, and infectious diseases. AVANIR's lead product candidate, Zenvia, is being developed for the treatment of pseudobulbar affect (PBA) and is the subject of an approvable letter from the FDA for that indication. The Company has initiated a confirmatory Phase III study under a Special Protocol Assessment (SPA) agreement with the FDA utilizing a new lower quinidine dose formulation of Zenvia intended to address safety concerns raised in the Agency's approvable letter for Zenvia in the treatment of PBA. Additionally, in April 2007 AVANIR announced meeting all primary endpoints in a Phase III clinical trial with Zenvia in patients with diabetic peripheral neuropathic (DPN) pain. The Company is conducting a formal pharmacokinetic (PK) study to assess alternative lower-dose quinidine formulations of Zenvia for DPN pain that are intended to deliver similar efficacy and improve safety/tolerability versus the formulations previously tested for this indication. AVANIR has licensed the MIF inhibitor program to Novartis International Pharmaceuticals Ltd and has sold its anthrax monoclonal antibody program to Emergent BioSolutions. The Company's first commercialized product, Abreva®, is marketed in North America by GlaxoSmithKline Consumer Healthcare and is the leading over-the-counter product for the treatment of cold sores. Further information about AVANIR can be found at www.avanir.com.

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AVANIR Investor Contacts
Eric Benevich
Brenna Mullen
ir@avanir.com
(949) 389-6700

Apr 29, 2008