"i started phentermine 37.5 mg on 7/10/15. i was 230 lbs.  it&#039;s now 7/30/15, and i&#039;ve lost 17 lbs in 20 days!!! i have not exercised at all. i only drink water or milk. cut out all sugar and i don&#039;t even miss it.  this pill really kills my appetite.  when i do eat, it&#039;s always something healthy, but very small portions. i&#039;m not hungry at all. i still have about 60 lbs to lose. i hope it keeps going this easily."