This is an over the counter product - it does not require prescription.
A supplement for dogs to support immune system and circulatory functions, and skin health. ANTIOX, grape seed extract supplement is standardized to yield 95% proanthocyanidins (PCOs) per capsule. PCOs are a special class of water-soluble bioflavonoids that are potent antioxidants. In some comparative tests, PCOs were found to be 50 times more potent than Vitamin E and 20 times more potent than Vitamin C as antioxidants.