Article / Updated 03-26-2016
Avonex, Betaseron, Extavia, Rebif, and Copaxone are the five injectable medications available for the treatment of multiple sclerosis (MS). Each of them primarily targets inflammation in the central nervous system (CNS).
Avonex, Betaseron, Extavia, and Rebif — which are all interferon beta medications — are approved for any person who experiences relapses — whether he or she has relapsing-remitting MS (RRMS), secondary-progressive MS (SPMS), or progressive-relapsing MS (PRMS).