OPC-3™, also known as oligomeric proanthocyanidins (OPCs) is made from a combination of grape seed, pine bark, red wine extracts, and also bilberry and citrus extracts. OPC-3™ is thought to be a free radical neutralizer or antioxidant. It is also thought to support the circulatory system and strengthen capillaries. Antioxidants are a chemical compound or substance that are thought to prevent cellular damage. Organic substances such as vitamin E, vitamin C, or beta carotene, for example, are thought to protect cells from damage caused by unstable molecules known as free radicals. Free radicals can form when oxygen interacts with certain molecules. Free radicals
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