"i was already taking topiramate for migraines, so my doctor added phentermine. i lost 7 pounds in the first week. i have lost a total of 15 pounds in the last 3 1/2 weeks. most of the side effects (dry mouth, anxiety, tingling in extremities) went away after the first two weeks or so. the only problem i have is eating enough. i document everything i eat in a app call simple diet plan. mainly to make sure i eat enough each day. exercise 3-4 days a week."