Standardized to Yield 95 mg Proanthocyanidins Per CapsuleVegetarianGluten FreeA dietary supplement to support vascular function and skin healthTruthWe pledge total truth in labeling. Our family of products contains only the purest and most potent ingredients. Guaranteed.A dietary supplement to support vascular function and skin health. DaVinci Laboratories Grape Seed Extract is standardized to yield 95 mg (95%) proanthocyanidins (PCOs) per 100 mg capsule and 47.5 mg (95%) proanthocyanidins per 50 mg capsule. PCOs are a special class of water soluble bioflavonoids that are potent free radical fighters. PCOs prevent the release of histamine from mast cells and PCOs support capillary strength.