Since July 2010, I had my prescriptions changed twice. The first time, I was on Adipex 37.5. Had a burst of energy, not jittery. That energy lasted about 3-5 days max. But I was still taking my medication once a day. After a few days, I was feeling nothing. Changed to Bontril 35 mg 3 times a day before meals, don't feel a thing. I really have to pay attention to my appetite, but it hasn't deminished at all. Any suggestions? Anyone knows what else is out there? Taking comments/suggestions from patients and Drs. and nurses.