"i&#039;m 18 year old female, 5&#039;6&quot;. i started phentermine after talking to my doctor about how i eat everything in sight, and simply one plate isn&#039;t enough for me. i was always tired, lazy, unmotivated. the first day i took it, i didn&#039;t sleep at night just like all the reviews i read online said i wouldn&#039;t. i didn&#039;t mind though because when it was time to get up for the day, i wasn&#039;t tired at all which was crazy. before phentermine i was 225 lbs. that&#039;s the heaviest i&#039;ve ever been. now i&#039;m 190 and dropping. as long as you take it about 30-45 mins before you eat breakfast in the morning and drink water, and attempt to work out, you&#039;ll strive on this medicine. i could lose a lot more if i wanted to. it gives you the energy &amp; motivation you need!!"