• 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
• Ester-C® is the only form of vitamin C that has been proven to last up to 24 hours in the white blood cells of the immune system
• Enhanced with quercetin, a powerful bioflavonoid and antioxidant with anti-inflammatory and anti-histamine properties

High-potency tablets providing 1000 mg of Ester-C®, enhanced with quercetin, a citrus free, powerful antioxidant with anti-histamine properties, particularly beneficial during allergy season.