Allergy Research Group Ester-C is a patented nutritional product that contains ascorbic acid and calcium.

This formulation is non-acidic and minimally irritating to the intestines.

Esterol also provides 3 types of bioflavonoids - quercetin, rutin, and proanthocyanidins.

Ester-C vitamin C is corn-source.

* These statements have not been evaluated by the U.S. Food and Drug Administration. This product is not intended to treat, mitigate, diagnose or cure any disease.