"i&#039;m bipolar and this is the only medication (out of many, many) that really helps my bipolar and it works almost instantaneously for me.  i first went on it to gain weight because i was trying to recover from anorexia and struggling, but stayed on it for my bipolar.  i did gain weight and i eat tons, but i have a good metabolism and zyprexa just brings me up to my medically ideal weight."