High Potency Grapine®Discover Extracts of grape seed and pine bark create a powerful antioxidant product that supports the nervous and cardiovascular systems. Offers 60 mg proanthocyanidins per tablet. Scavenges cell damaging free radicals. Provides 60 mg proanthocyanidins per tablet. How It Works How It Works Grapine is a blend of powerful antioxidant proanthocyanidins derived from grape seeds and maritime pine bark. Proanthocyanidins support the circulatory system. They