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 antioxidants.* PCOs also support capillary strength.*