I'm on 15 mg. It worked for 2 weeks, and now I might as well not even take it. My appetite is back, I either gain weight or maintain regardless of how well I behave myself, and my depression is worse. I even tried taking 2 to see if I need an increase. It worked until 9:30 at night, then I found myself crying because I was hungry, even though I ate my max. calories for the day.