bipolar disorde
"This is the best psych med option I've ever had.  Over a six-year period, I had been prescribed a myriad of medicines for bipolar mania and depression, including: Abilify, Wellbutrin, Zyprexa, Celexa, Prozac, Lithium, Geodon, and Tegretol.  Lamictal has been a Godsend.  

Lamictal has not been associated with weight gain nor diabetes (I have type 2, but was diagnosed prior to my prescription).  All psych medicines have side effects, and finding the most benign one can be maddening, and even life-threatening, in my case.  Give this one, at least a shot."