Hydroxycitric acid (HCA) is found primarily in Garcinia cambogia. It may be healpful in weight control because of its effects on metabolism. Chlorogenic acids from green coffee bean enhance the body's ability to burn body fat for energy, and green tea supports thermogenesis in the body. Red raspberry leaf is a source of nutrients like magnesium, potasisum, vitamin C and B vitamins to support the body in weight control.