Amitriptyline
"I have tried almost every medicine for GAD (Xanax, celexa, paxil, wellbutrin, lamictal, seroquel, buspar) but it seems that Amitriptyline is the only drug that work for me. I  also  take 300 mg of Lyrica for chronic pain and 150 mg of Effexor Xr in the morning and 50 mg of Amitriptyline before sleep. It changed my life."