I'd been diagnosed Bipolar II for years, but I stopped taking the medication because it was making me stupid.
When I got sober they sent me to rehab, then put me back on lamotrigine (Lamictal) and Wellbutrin. Unfortunately the lamotrigine makes me really stupid/cognitive issues, but since being sober I've been on Wellbutrin and buspirone and it seems to be managing the symptoms quite well.
Caveat...this is what works for me, everyone is different. Do not take this as medical advice.