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24-Hour Immune Support
Clinical studies show that Ester-C® increases vitamin C levels in the body for up to 24 hours.
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Quick Absorption
Better absorbed and more bioavailable due to the active vitamin C metabolites only found in Ester-C®.
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Gentle on the Stomach
Ester-C® is non-acidic and gentle, making it gentle on the digestive system unlike regular vitamin C.
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Backed by Science
The patented Ester-C® has been studied for decades and is better researched than all other buffered forms of vitamin C.
How it Works
Ester-C® is a unique and patented form of calcium ascorbate, which is created when ascorbic acid (vitamin C) is buffered with calcium.
Ester-C® takes calcium ascorbate and, using a proprietary, water-based manufacturing process, produces a pH neutral product that contains active vitamin C metabolites (that do not exist in any other form of vitamin C, including calcium ascorbate).
These natural metabolites provide quick absorption.
Ester-C® also functions biologically like other forms of vitamin C, providing benefits for skin, joint and vision health, cardiovascular support, antioxidant protection and immune system wellness.