Ultra Potent-C 1000 is a proprietary, patented  vitamin C formula that features a unique blend of metabolites. Its buffered delivery system is designed to help prevent the potential stomach upset that is sometimes associated with high vitamin C intake. Ultra Potent-C 1000 supports healthy immune function by helping promote natural killer cell and white blood cell activity. Preliminary scientific research suggests that vitamin C in the form of Ultra Potent-C may result in improved uptake of the vitamin by white blood cells when compared to regular ascorbic acid.