Dietary supplement. Non-acidic. With citrus bioflavonoids. 24-Hour immune support. Unique gentle form of vitamin C. Patented formula. Non-acidic Ester-C is a breakthrough patented formula that contains naturally-occurring Vitamin C metabolites and is quickly absorbed. Its unique manufacturing process neutralizes pH, making it gentle on the digestive system. Ester-C along with Citrus Bioflavonoids delivers advanced antioxidant protection, remaining active in the immune system for up to 24 hours. Free of: gluten, yeast, wheat, milk, or milk derivatives, lactose, sugar, preservatives, artificial color, artificial flavor, sodium (Less than 5 mg per serving). Non-GMO. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.