Just got my tenth infusion a couple days ago and since then I've felt pretty aweful....blood pressure seems higher than normal - i'm semi woozy when I walk and I've just felt strange. I called my neuro but I'm spooked from wanting to get another iv if this doesn't go away. Of course there could be an underlying issue that isn't related to tysabri. I've felt worse the last couple months and it doesn't seem to be as effective...that or things have just gotten worse in terms of ms progression. I get a brain mri next friday so i guess we'll see. Either way...I'm seriously considering jumping on the bg 12 bandwagon once it comes out.