Scientific Studies That Support Isotonix OPC-3®: Ames, BN, et al. Oxidants, antioxidants, and the degenerative diseases of aging. Proc Natl Acad Sci USA 90:7915-7922, 1993. Bagchi, D, et al. Cellular protection with proanthocyanidins derived from grape seed. Ann NY Acad Sci 957:260-70, 2002. Bagchi, D, et al. Free radicals and grape seed proanthocyanidin extract: importance [Continue]