"i started taking these pills about two years ago. at first it really jump started my weight loss. i weighed 195lbs to begin with and within a few months i ended up at 170lbs.  there were a few side effects though.  it gives you awful cotton mouth, moodiness, headaches and insomnia. i would stay awake for days at a time. after the initial weight loss, i guess my body built up a tolerance and it stopped working for me.  i gained back all of the weight and more.  it is a great motivator, but it really does come down to diet and exercise if you really want to keep it off."