CS is correct. According to my doctor, they prescribe the same meds to treat anxiety that they prescribe to treat depression. They're called anti-anxiety/anti-depression medication. You should def. talk to your doctor, those meds make all the difference!
I've been on Zoloft in the past, it caused me diarrhea for the first two weeks that I was on it. From what I've read that is a common side effect of Zoloft. I did feel a little tired in the beginning but that went away.
Other than that, I really liked it.
Now I'm on Celexa. I had gone off Zoloft and the symptoms returned. I had switched doctors in the mean time. My current doctor did not want to put me back on Zoloft because he feels that Celexa is the best med out there and doesn't cause as many side effects as the others. He told me that he is not comfortable prescribing other meds without starting the patient on Celexa first. Celexa works for me as well & I didn't have any side effects except I did feel somewhat tired at first but that went away.
You can actually try both meds + therapy at the same time, esp. helpful if you suffer from panic attacks.
ETA - Just to go along with Mallory's comment - I have taken Antivan in the past too. It was prescribed along with the zoloft. It wasn't meant to be taken as an everyday pill but "as needed" pill. It does make you really, really, really tired at first until your body gets used to it. Or at least it did with me. It was prescribed to me to take when panic attacks start to come on. My mother was also taking that one and said to be careful because according to her doctor it takes away ALL anxiety..even the good anxiety. (Yes, there is good anxiety.) So if you're out in public your guard could be down too low as far as possible danagers.