First I want to start by saying I'm glad I'm not alone, this has been a very scary and lonely experience for me! I feel like anxiety is controlling my life, and I'm a single mom so I need to get a handle on it. So I started taking Zoloft 25mg, it made my heart race worse then an anxiety attack would. I called my doctor and they switched me to Celexa 10mg, I am really really nervous about taking it after the Zoloft episode. Can anyone tell me their most common side effect and if racing heart was one?