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A 47-year-old member asked:

Which is better? interferon or tysabri (natalizumab)?

1 doctor answer1 doctor weighed in
Dr. Bennett Machanic
Neurology 52 years experience
NO contest: Tysabri (natalizumab) is the second most potent MS drug on the market, but it has a risk, as can potentially cause Progressive Multi-focal Encephalopathy, and possibly melanoma. Interferons are drugs of the past, and being phased out over time, due to lack of efficacy, but they are quite safe in most patients.

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Last updated May 2, 2015
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