I have had MD for 18 years. Been on Avonex, Betaseron,
Tysabri, and now Tecfidera. Unfortunately, I'm also on lots of other medications, mostly due to terrible central pain. My neurologist made me stop the Tysabri after 24 infusions because of safety concerns. I felt my overall best while on Tysabri and have asked him if and when I might be able to go back on the monthly infusions. He does not have an answer for me at this point.