Hello, my doc has recently put me on Celexa. I was taking Xanax before the Celexa. The doc put me on a dosage of 20 mg a day of Celexa, but told me to take half that dosage (10 mg) for 4 days. I felt the anxiety the first couple of days, but it slowly wore off as my body became used to Celexa. The day came for me to double the dose and I took 20 mg Celexa. I became very nervous and had to take double my old dosage of Xanax just to get to sleep. I went back to the 10 mg of Celexa for about 2 weeks. I felt better and better as the days went by. As I felt more comfortable, I got busier and the anxiety started to come back. I decided to go up to the 20 mg dose my doc suggested and things have been great ever since. Maybe it is taking your body some extra time to get used to the Celexa. You could cut the dosage a little and see how that feels. If it helps, slowly raise your dose until the prescribed amount. The more you take, the busier you could be without the anxiety. It worked very well for me, it's something you could try.