The recommended dose per day is 3, but I am sleepless after only 2 (and I take the first one in the a.m. and the 2nd by noon!). I am sensitive to stimulants, so I'm sure that's what's going on. I try to take just 1 per day, but the effects wear off early. So... I'm not sure what to do about it. Always looking for that miracle weight loss formula... and this ain't it! But it is a helpful, though imperfect, too. It revs up your metabolism--- you feel hot and a little jumpy.