Avonex (interferon beta-1a), the new treatment for multiple sclerosis (MS)

There's a lot of excitement about Avonex (interferon beta-1a), the new treatment for multiple sclerosis (MS).

Avonex is a beta-interferon...but it's chemically different from Betaseron (interferon beta-1b). That might explain some of the differences in their effects.

Both Avonex and Betaseron reduce the frequency of attacks in patients with the relapsing-remitting form of MS.

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