The key ingredient of this supplement is Hydroxycitric acid and it is extracted from real Garcinia fruit. It has so many other compounds like antioxidants, fat killing enzymes and other minerals etc.

This process makes you feel less hungry without eating load of calories. This slows down release of glucose in blood and speeds up conversion of unwanted carbohydrates into fatty acids.
http://originalgarciniacambogia.quora.com/original-Garcinia-cambogia-burn-fat