White kidney bean
White kidney bean (Phaseolus Vulgaris) is promoted as a starch blocker and weight-loss aid which fight the effects of α-amylase by blocking the breakdown and digestion of starch. It is clinically shown to reduce the digestion and absorption of carbohydrates thus reducing the caloric impact of starchy foods.
Brindleberry (Garcinia cambogia) contains an ingredient called hydroxycitric acid (HCA), which has been used to aid weight loss. HCA boosts fat-burning and cuts back appetite by blocking an enzyme called citrate lyase, which your body uses to make fat. It also raises levels of the brain chemical serotonin, which may make you feel less hungry.
Chlorogenic acidsSource: Green coffee bean