I am 23 years old. I started on celexa two years ago to treat anxiety/depression. I am to the point where I feel just regular however, I have gained about twenty pounds as well as having ZERO sex drive. It makes me sad and it beginning ton really make my fiancé feel sad about me never wanting to be physical with him. I went to the doctor today and they wrote me a 150 mg prescription to start wellbutrin when I was ready. Is it worth the switch??? Please help I am so torn!