EuroPharma - Terry Naturally Clinical OPC Extra Strength - 60 Softgels EuroPharma Terry Naturally Clinical OPC Extra Strength French Grape Seed Extract contains powerful healthpromoting 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 better ensure absorption. Large OPCs (tannins) in grape seed extract cannot be absorbed. EuroPharma - Terry Naturally Clinical OPC Extra Strength Supports: Heart and Arteries Blood Sugar Cellular Protection Immune Function Cholesterol Balance Weight Management Focus and Concentration Blood Pressure Liver Function Frequently Asked QuestionsWhy is being tannin-free so important?Tannins are a form of proanthocyanidin (another OPC) found in grape seeds stems and skin. As a result they are found in many grape seed extracts. However they have a high