I've been on rebif
for 6 months.
My neuro prefers either rebif
(3 times per week), or Copaxone (daily).
& Avonex are essentially the same med, but rebif
is 3x week with a small needle into the fatty tissue; Avonex is weekly with a looong needle into muscle.
Beta is similar to rebif
(slightly different chemical composition), every-other-day injection; I think you have to mix up each shot -- but many are successful on Beta.