As I write this I'm experiencing flashing in my left peripheral vision, I know I'm not crazy and it's been going on for three days now. I have stopped my Keppra xr, I would rather deal deal with the known than play around with all the side effects that are not only continuous but more damaging and unexplainable. I believe everyone who post here wants to hear that everything going to change and get better. I believe it will, it has to. Thanks to everyone here, your not crazy, toxic is the word.