Grape Seed Extract 95% OPC / polyphenols Product specification: 95%,98% OPC / polyphenols... Grape Seed ExtractOriginal plant: Seeds of Vitis vinifera L..Specification: Proanthocyanidin 95%, polyphenol 95%Test method:UVMolecular formula: C30H26O12Molecular weight ... from injury or trauma,varicose veins,leg swelling and retinopathy Grape Seed Extract