"i switched to topamax from lamictal to see if it would control my bipolar disorder and help me lose weight. my mood and sleep have been incredible and i have lost 15 lbs in 6 weeks on topamax. i was a little worried about having memory problems but have not suffered this side effect at all. have a little tingling in my feet at night but not bad enough to stop taking it. overall i highly recommend this medication for bipolar disorder."