"i started using phentermine 2 weeks ago and lost 10 pounds so far. i could probably have lost more but forced myself to eat small amounts. i could have gone without because my appetite just vanished. i learnt from previous experience though that my body doesn&#039;t agree with that and then i binge. an added benefit for me is, that the medicine keeps me awake during the day. i have narcolepsy and had to stop my medication for that when starting phentermine. so all in all its amazing. even now at christmas it&#039;s not hard to keep the diet up."