Lamotrigine
"I've been on Lamictal for three years for Bipolar disorder and Epilepsy, at first as a mood stabilizer and then as an anticonvulsant/mood stabilizer.  It's been excellent at treating the bipolar issues, virtually eradicating the mood episodes (with the exception of a couple of days of minor hypomania here and there) and helping a little bit with the coexisting anxiety issues.   However, it hasn't been any good at controlling my seizures, although it's made them a lot less severe than they were before I went on higher doses of Lamictal.  I haven't had any major side effects, or any at all outside of an increased sensitivity to rashes."