Now Foods, Grape Seed Extract, 500 mg, 90 VegCapsProduct Description Grape seed Extract is a highly concentrated extract with a minimum of 90 percentage polyphenols, including oligomeric proanthocyanidins, which are the potent water soluble free radical scavenging compounds found in grape seeds. A growing body of research indicates that grape seed opcs may help to support the health of vascular, bone, kidney, brain and other tissues by supporting a healthy, balanced immune response to normal