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To those with Avonex experience

I took my first 1/4 dose yesterday around 6 pm. For awhile, I didnt feel anything. Around 5 hours later, I woke up with violent shaking chills, but managed to sleep off and on. A couple hours later, I woke up very nauseous and vomited a couple times. I went back to sleep, and when I woke up this morning, I felt good save for a few muscle aches. Has anyone had a similar experience? I know the chills are common, but havent seen vomiting as a side effect.