I don't believe it, but I got a new pdoc and he wants to weed me off my klonopin, and prescribed of all things, Vistaril. I had to agree to try it because I never have before, but what can I expect from a antihistamine for serious anxiety?! That sucks. May be if it doesn't work he will let m stay on the klonopin, he did give me another script for them too.