I Take Tysabri Pml By: Jstuly1 Written on November 13th, 2012 Unfotunately the worst possible side effect hit me using tysabri PML. Paralyzed lft side of my body Thank the author By: Jstuly1 Age: 46-50 1 Rate Up Rate Up this story even more + New Rating: - 474 people have read this story Your Response Please respond with authenticity, support, and respect Email: Username: Password: Birthday: By clicking "Post", you confirm that you agree to the Terms of Service of Experience Project, Inc. 2 responses Sort responses by: Recent Oldest Rating Samsoom Very sorry ! I have been taking Tysabri for 3 years now and scared of PML :( ckoch159 How long did you take Tysabri? Did you test positive for the Anti-JC virus? My fiance has MS and just tested positive for the virus but the doctor still wants to put him on it. Any advice?