My bf was on Tysabri for over two years right up until his liberation. He decided to stop, but mostly due to the fact that there are really no studies on people using this for more than two years. He was on Rebif for two years before that but had NO quality of life on it due to the tremendous flu symptoms.
I would say it is your decision to make and whatever you feel is right is RIGHT! Good luck to you!
Boyfriend dx'd 6-6-06!!! RRMS............CCSVI procedure done on Nov. 13, 2010 and March 7, 2011 by Dr. Sclafani!