"i have been taking phentermine only for 3 days now.  the first day i took the medication i had some dizziness. after the first day some dry mouth and very little loss of appetite. i do drink about a gallon of water per/day sometimes more and my workouts are excellent &quot;i like to sweat profusely when working out&quot; with this pill i see a good workout. i don&#039;t know how much i&#039;ve lost because i only like to weigh myself every two weeks. when i started i weighed 208lbs. my goal weight is 180 lbs, but the doctor says she would like me to loose at least 40 lbs. i can&#039;t wait to see the weight start falling off. i&#039;m having some slight doubts about this pill. i still crave some sweets but not much. and i do sleep very good. "