Dietary Supplement 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!* No Gluten, No Yeast, No Wheat, No Milk or Milk Derivatives, No Lactose, No Soy, No Egg, No Grapefruit, No Sugar, No Preservatives, No Artificial Color, No Artificial Flavor, No Sodium. 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 and disease.