Answer
The most commonly reported flu-like symptoms with Avonex (interferon beta-1a) are myalgia, fever, chills, sweating, asthenia, headache and nausea.
Sources for this answer
- AVONEX 30 micrograms/0.5 ml solution for injection.Biogen Idec Ltd · emc · SmPC §4.8 Undesirable effects · Version 34Document updated
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