"i started phentermine 7-11-15. i have been at a stalled weight for the past year and a half and then all of a sudden gained 15lbs in a week along with other symptoms i was having. went to the doc and did blood tests, everything came back healthy.  i&#039;m 6&#039;1 female and weighed 203. i weighed myself this morning on 7-20-15 and am at 193lbs. the side effects i have is dry mouth and helps drinking a lot of water and chewing gum.  doctor put me on this for 3 months to jump start my metabolism again. so i&#039;m hoping once i&#039;m done the weight stays off. i work out 5 days a week and do cardio 4days and eat 4-5 small meals a day. nothing else worked. i tried lots of different fat burners and nothing helped til i got on phentermine."