(info at dxalherbextract dot com) active ingredient: opc. product specification: opc 95%; polyphenol 90% origin: it is root in the seed of vitis vinifera l. and it is extracted from grape seed, it is brown red powder. grape seed extract hold potential resist oxidation function. the main purpose: oxidation resistance; eye health role; heart rate health role; to reduce the risk of cancer; enhance vascular strength; diminish inflammation, remove turgescence. this product has been exported to eu, japan, usa, asia etc.. the physical level and microbiological level can meet the export standards well.