I was diagnosed with MS in the begenning of 2005 and originally put on Betaseron. I loved betaseron because it never gave me any side effects. However, I had flare ups in August 2007, March 2008 and March 2009 resulting in my doctors switching me to another medication. My specilist in Philadelphia suggested that I switch to Tysabri but I felt Tysabri was too risky for me at that time since I was only 24, getting married in a year and a half, and to me, the risks for that medication were only considerable when I felt it was my last resort. Instead of agreeing with my specialist, I went with another option which was to start taking Copaxone and do solumedrol once a month. Since my last flare up was my worst and left me feeling really out of it, I am now excited to start Tysabri. Both my neurologist and my specialist feel is it the way to go. Although there are risks with it, the risks of not bring on it are far worse in my eyes. I have done my research and have talked to both doctors about the pro's and con's and I am finally ready to be on it. At my last appointment in Philly, I signed the paperwork, agreed to the terms and the possible risks and cannot wait to set up my first infusion. I just hope my insurance will cover it since it is $2,300.00 a month.