Sisu Ester-C Supreme Ester-C® is a unique, patented form of calcium ascorbate, which is made when ascorbic acid (regular vitamin C) is buffered with calcium using a water-based process. Sisu's formula is enhanced with quercetin, a bioflavonoid and powerful antioxidant with anti-inflammatory and anti-histamine properties. Additionally, added bioflavonoids from berry...

Sisu Ester-C Supreme

Ester-C® is a unique, patented form of calcium ascorbate, which is made when ascorbic acid (regular vitamin C) is buffered with calcium using a water-based process. Sisu's formula is enhanced with quercetin, a bioflavonoid and powerful antioxidant with anti-inflammatory and anti-histamine properties. Additionally, added bioflavonoids from berry fruits has been added for superior vitamin C absorption.