obesity
"I am 23 years old, 5'8''. I started Phentermine Sept. 25th at 255 pounds. I have been working out way before I started the pill and had lost about 20 pounds but then hit a plateau for about a month. I still workout everyday and replace breakfast and dinner with natural fruit shakes, any fruit I like just add water, protein, for lunch I have a salad with any meat cooked with no oils. I drink plenty of water and workout for about 1 1/2hrs 6 days a week. Today is day 6 on the pill and I weigh in at 248.2lbs. 
The only negative side effect is some insomnia."