The antioxidant capacity of pine bark extract comes from proanthocyanidins (proanthocyanidin oligomers) (OPCs), which are 20 times stronger than vitamin C and 50 times stronger than vitamin E. As well-known antioxidants, OPCs can effectively suppress the effects of free radicals, and free radicals play an important role in degenerative diseases, cardiovascular diseases, blurred vision, sunburn and premature aging.
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