a kind of health supplement for lowering plasma glucose and plasma triglyceride is prepared from a mixture of dried grape skins with the flesh removed , dried grape seeds and dried grape stems , and the mixture is ground into fine powder according to a ratio of volume between the grape skins , the grape seeds and the grape stems found in naturally available grapes ; upon treatment of the 3sg powder with ethanol , the intracellular lipid - soluble flavonoids of the 3sg powder are released to give rise to the health supplement which functions include to lower plasma glucose and plasma triglyceride , as well as to attenuate anomalous energy metabolism in diabetic , hyperglycemic , and hyperlipidemic people .