Overview Study to Determine if Avonex and Rebif Work Comparably Well in Subjects With Relapsing Multiple Sclerosis Status: Completed Trial end date: 2003-05-01 Target enrollment: Participant gender: Summary The purpose of this study is to find out if weekly Avonex works as well as three times a week Rebif in subjects with relapsing multiple sclerosis. Details Lead Sponsor: BiogenTreatments: Interferon beta-1aInterferon-betaInterferons