"1st 2 days were great. took it on an empty belly, felt that euphoric feeling that people mention. did have trouble sleeping that night. woke up every 1 to 2 hours. skip to day 3 i was so exhausted about 2 hours after taking the phentermine. doctor suggested to wait longer to eat after taking them. that did the trick. by this time i was taking unisom or zzzquil to help sleep at night. that works wonders. now i&#039;m 3 weeks in and have lost 4 pounds. i would have liked to seen amazing results like everybody else but i&#039;ll take the 4 lbs. also i&#039;m only on 15 mg. i started at 203 and am at 199. i go in for my 1 month checkup and we&#039;ll see what he thinks of the progress."