Lamotrigine
"I have been fairly recently diagnosed formally with Bipolar II (among a plethora of other things, including obsessive-compulsive disorder, panic disorder, and generalized anxiety disorder, as well as Tourette's syndrome). I've previously been on antipsychotic medication, which I cannot emphasize enough on how negative my experience with this class of medicines has been. Abilify made my anxiety worse. Seroquel made me gain 20 pounds in 2 weeks. Geodon was cost prohibitive and amplified my anxiety. The only side effect I have complaints about is fairly severe dry mouth. I'd recommend a mouthwash that is for people with dry mouth if you opt to take this medicine. Otherwise, I have noticed nearly instant improvement in my symptoms with this."