I was on Lexapro for 2 years and it worked great. Then I got my anxiety back and was put on Effexor XR (which I was fine with for 6 months) and got back symptoms again. The Dr.cross tapered me from Effexor and put me on Prozac 20 mgs and now upped to 40. It is doing nothing. I am so upset. This has been going on for 2 months. I am beside myself. Do you think that another SSRI like celexa could work? I was on Paxil at one time, which worked great, but I gained so much weight.