This was/is phenomenal for me. When I first started taking it, it was the one thing keeping me sane. I had at the time the dizziness shortly after taking it.. Then I'd get regular bursts of energy throughout the day (side effect: excitedness).
When I finally decided to increase my dose to get full effects from it, I also had quite a bit of drowsiness associated with it. Because of this, I take it at night with Arabien to get me through the excited bursts (they wake me up otherwise).
I'm not exactly sure which disorders it helps with the most, but I will say I have GAD, SP, OCD and PD. Since I've found my magic mix, I've gone up to 6 mos without an anxiety attack at a time, and I don't have that constant worry feeling throughout the day.