I don't know of this helps, I was diagnosed with major depression and PTSD for deacdes, later BP, which I know you didn't want BP sufferers but I was put on the topamax before I was diagnosed with BP. It helped with anxiety for me as well as leveling out the moods. It did not lift them but I did not have the serious dips or spikes anymore, especially with the anxiety with the PTSD, when I went on it. I have to take an anti-depressant with it however to lift the depressive mood.

No matter, I hope you find some help soon. Hang in there.