"i started taking phentermine 2 1/2 months ago...thinking i weighed around 250lbs i decided to go to a weightloss clinic. at my 1st appointment i couldn&#039;t believe i actually weighed 336 lbs. i am 5&#039;4 and 24 years old. i go to the clinic every saturday to get weighed, get a b12 shot and also they give me my medicines for 1 week. the phentermine, amino acids, calcium, and a multivitamin. so after 10 weeks of a strict protein diet and at least 2 hours in the gym everyday i am now down to 269lbs. that&#039;s 68 pounds in 2 1/2 months. i wouldn&#039;t be able to stick to my diet without the phentermine. it definitely suppresses my appetite."