bipolar disorde
"Great medicine.  I take it only in the morning at a low dosage - it's a bit of an upper and helps my brain work better and faster.  Probably no good for bipolars on the high energy side.  It's therapeutic, too - unlike lithium it's there working all the time.  Wouldn't take it at night, and something to wind down from it is helpful.  No side effects besides lunchtime headaches, a little extra clumsiness and mixing up words sometimes when I'm speaking or typing."