obesity
"I was prescribed Tenuate extended-release tabs because of my caffeine sensitivity.  Of course, I noticed a change but not the jittery/shaky feeling that comes with harsh stimulants.  My side effects included nausea, constipation, blurred vision (which I didn't associate to the meds). I lost 15 pounds over a three month period including the winter holiday period but noticed after that I was not losing anymore.  Two months later and a 6 lb weight gain, I've decided to stop taking the meds.  Immediately, I noticed extreme exhaustion and an inability to get going."