I took Xanax for a while. As my body got used to it, it didn't seem to work as well and I needed to take more. They have me on klonopin now which helps but it's not quiet as fast as Xanax but almost. I had to take it regularly for a while but since I started taking Fetzima, Saphris and quit working I haven't needed it often. I'm not sure which one of the changes helped the anxiety because they all changed at the same time.