Cellulose, Croscarmellose Sodium, Stearic Acid, Dicalcium Phosphate.100% vegetarian tablets. Ester-C 1000 with Citrus Bioflavonoid Complex is free of Sugars, Salt (sodium), Wheat, Corn, Soy, Starch, Yeast, Dairy, Artificial Colors, Flavors and Preservativ |