While I was in rehab, my doctor put me on gabapentin but I don't even know if it is good for anxiety. I do not want to be on it so I stopped it cold turkey which they say that you shouldn't do but whatever. It is nothing compared to the fentanyl withdrawal. I read a book about anxiety and I think that it has some secret to it and at the end of the book it says you are going to need counseling lol...