Green Tea Extract comes from the natural dried leaves of the tea plant (Camellia sinensis) and has been used for thousands of years in Asia as a beverage and an herbal medicine. More importantly, Green Tea Extract is an excellent source of potent, bioflavonoid rich compounds that are high in polyphenols, which are a special class of bioflavonoids. Green tea Extract has a rich source of polyphenols, particularly the catechin, epigallocatechin gallate (EGCG) which provides powerful antioxidant protection. It also helps in enhancing immune function of body. We can get the entire benefit of the green tea by taking the green tea extract capsules.