Great for water loss. It will clean out your system, too. I mean it will FLUSH you out, RIGHT NOW. I felt like it didn't necessarily eliminate fat, but it didn't allow the food in your system to fully digest. Kinda like purging. So it would contribute to calorie reduction. It will really tear up your system, if you know what I mean. There's a reason why women are recomended NOT to use this. I will probably only use it again, short term, to lose that last little bit of water weight, to dry up.