Why do you think you're bipolar? What, specifically are your symptoms.
If you truly are bipolar, lithium is widely known as the wonderdrug for the condition. It'll take some time to get the dose just right, but once you do, your symptoms will pretty much vanish. Again, that's only if you are, in fact, bipolar.
I should point out here that many people who read diagnostic texts, be they mental or physical (DSM or Merck), end up misdiagnosing themselves in a big way. We've all heard of the med student who decides he's got some rare disease that will kill him in 3 weeks. It's no different on the mental health side of things. Read enough psychology texts and you, too, will think you're schizophrenic