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Esterol Ester-C® is a patented nutritional product that contains ascorbic acid and calcium. Esterol also provides three types of bioflavonoids - quercetin, rutin, and proanthocyanidins from grape seed extract. The metabolites in Ester-C help increase retention of vitamin C in white blood cells for immune function.* This extended retention time is what sets Ester-C® apart from other vitamin C products. In two capsules, Esterol Ester-C® contains 1.35 grams of vitamin C. Ester-C® vitamin C is corn-sourced.
