Clinical OPC French grape seed extract features powerful health-promoting nutrients called oligomeric proanthocyanidins (OPCs) that support a wide range of health needs. Clinical OPC Extra Strength delivers 400 mg of VX1, a unique French grape seed extract. It’s standardized for only small sized OPCs to ensure absorption. VX1 offers the clinically recognized level of OPCs for consistent, life-enhancing benefits. Supports healthy levels already within normal range In conjunction with a healthy diet and exercise regimen.