 Calotren, C-A-L-O-T-R-E-N. The three main ingredients are all natural. There are no drugs, no side effects, no stimulants, none of that stuff here. It's just a very smart way of you losing weight and through, again, the exercise program that the doctors talk about all the time, using the intelligence in your brain to eat the right stuff, all those things put together, plus this amazing ingredient.