Interferon beta-1a

Interferon beta-1a is a drug in the interferon family used to treat multiple sclerosis. There are two principal competitors in the market for this drug:

• Biogen Idec's Avonex
• Serono's Rebif

In addition, Schering makes a similar treatment using interferon beta-1b called Betaferon (marketed in the United States by Berlex under the name Betaseron).

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