There are several good mood stabilizers out there, but the gold standard is Lithium, if you can tolerate it. Another good one is Lamotrigine, generic for Lamictal. I take Trileptal, and have for years, so in general, it all depends on what your psych doc likes to use, and what side effects you are willing to put up with.

If you are having mood swings, definitely find yourself a psychiatrist to talk to about them.