Al Tapel, Ph.D., at the University of California at Davis, has compared antioxidant ability. This may well be due at least in part to something called antioxidant cycling. Antioxidant cycling is the term that describes how antioxidants work together to extend each others' lives and make each other more powerful. When the antioxidant vitamin E disables free radicals, it becomes a minor free radical. However, when vitamin C recycles vitamin E, it changes to a free radical.
Selenium is part of the enzyme glutathione peroxidase, which recycles glutathione.
OPCs also play a role in cycling, as they sacrifice themselves in order to neutralize harmful free radicals within the body. Observe then, the antioxidant army. Its individual components are strong individually, but when we give them the opportunity to work together, you have a fighting force that can defeat disease and slow down aging.