The proanthocyanidins are one of the most beneficial groups of plant flavonoids. The most active proanthocyanidins are those bound to other proanthocyanidins. Collectively, mixtures of proanthocyanidin dimers, trimers, tetramers and larger molecules are referred to as oligomeric proanthocyanidins or OPCs for short. Extracts of OPCs have demonstrated a wide range of activity: * Increase intracellular vitamin C levels * Decrease capillary permeability and fragility * Scavenge oxidants and free radicals * Inhibit destruction of collagen Grapeseed extract contains the gallic esters of proanthocyanidins, the most active OPC antioxidant, unlike pine bark extract which does not. Grapeseed extract is also more economical and creates less impact environmentally as only the fruit is harvested. These statements have not been evaluated by the Food and Drug Administration (FDA). These products are not meant to diagnose, treat or cure any disease or medical condition. Please consult your doctor before starting any exercise or nutritional supplement program or before using these or any product during pregnancy or if you have a serious medical condition.
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