Ester-C is a patented form of Vitamin C. It provides 24-hour immune support, is non-acidic, and contains naturally-occurring metabolites for quick absorption.* Ester-C is the most patented Vitamin C brand in the world and, since its benefits are supported by science, you know you are giving your body the advanced immune support it shouldn't be without.

* 24-Hour Immune Support A recent clinical study showed that Ester-C increased vitamin C levels in the body for up to 24 hours.1 White blood cell levels of Vitamin C were elevated in subjects receiving Ester-C when measured 24 hours after initial dose. The presence of key metabolites such as threonate have been shown to be responsible for this increased level and retention of Vitamin C by the cells. No other patented vitamin C brand can make this claim! Naturally-Occurring Metabolites For Quick Absorption * During the Ester-C patented manufacturing process, vitamin C metabolites are created. These naturally-occurring metabolites activate the vitamin C molecules in Ester-C, making it easier and quicker for the body to transport them from cell to cell for numerous health benefits.* Non-Acidic and Gentle on the Stomach In a recently published study, individuals sensitive to acidic foods were given 1 gram of vitamin C as ascorbic acid or as Ester-C. Subjects reported he