First, let me say, I've been on interferons for more than 10 years, jeez, probably close to 15 now. First Betaseron, then Avonex in a study, then Avonex ever since it's approval.
That said, I hate Avonex. I really do. I've been on it forever, and I still get very, very sick from it every week. I lose 2 whole days from that stupid shot. My doctor (who developed Avonex, by the way) always swore it was going to get better with time - but it hasn't.
I vomit, I get high fevers, chills, sweats, body aches that are so bad I can't even lay down without it hurting worse - all of it.
But this stuff is GOOD for me, right?
Anyone else still sick with Avonex even after long-term use?