How is Rebif different from Avonex ® ?
Both Rebif and Avonex ( interferon beta-1a ) are made of interferon beta-1a, a protein produced in mammalian cells which is similar to the naturally occurring interferon in humans. However, while Avonex 30 mcg interferon beta-1a is taken once a week via intramuscular injection injection, Rebif 44 mcg is taken three times a week via subcutaneous (under the skin) injection. Rebif is a higher total dose of interferon beta-1a every week.
