"i started out at 233 pounds when i started to take phentermine. i lost a lot of weight over a course of the first 5 months then it tapered off for the 6th month. then i took a month off and started to take it again for a second series. over the two series i lost 100 pounds. i have gained 30 pounds back over the past 6 months and i am now back on phentermine to get the weight back off. i love the doctor that i see for weight loss because he makes it clear that it is not just taking a pill, it&#039;s a whole life style change from eating to exercising and triggers that make you eat things that are not healthy for you. this is my first day back on phentermine."