"i started phentermine 30mg on 8-4-15. so far i have gone from 129 to 120. i&#039;m loving how fast the weight is coming off, but i don&#039;t really have any increased energy i was hoping to have. however, the weight is coming off and my appetite is suppressed so i guess it&#039;s doing its job. hoping for the next 51 pounds to come off just as fast!"