forget bout calories, that is shit is useless, even if something is called a fat burner, it doesn't mean it helps to burn fat
ephedrine will take off a few pounds of water in the first week or 2, and if u do cardio it wil help to take more off, it will suppress your appetite and this helps to lose fat, that's it. If you are under 170 pounds, u can take half a pill 3 times a day of bronkaid, if u are over u can take 1 pill 3 times a day, you will never get headaches this way
I don't think it's an actual fat burner like hgh or tren are, it will def help u look better if u are lean already, if u r fat u got problems ephedrine can't solve