"i started wellbutrin (150 mg) two months ago. so far, it&#039;s been very effective. the only negative side effects i&#039;ve noticed have been mild heart palpitations, some pretty severe weight loss (15 lbs in two weeks, most of it muscle mass), insomnia and a slight dip in my concentration levels. i can&#039;t eat certain foods anymore (like sugars and fried foods) without experiencing heart tremors and occasionally chest tightness (like a mild heart attack), but this has mostly gone away since i&#039;ve started exercising again. on the other hand, i&#039;ve stopped compulsively wanting to kill myself, my mind is a lot quieter, and i have stable energy throughout the day. i feel almost normal sometimes these days, and it&#039;s definitely a strange sensation."