Buffered Vitamin C is an immune boosting powerhouse, with 500mg Vitamin C and 100mg Bioflavonoids.** Plus, it has been prepared with natural alkaline calcium carbonate and magnesium oxide which buffer and neutralize the excess acidity of Vitamin C. Help keep immune system healthy and strong.Ingredients:Supplement FactsServing Size: 1 tabletAmount Per Serving% Daily ValueVitamin C (as ascorbic acid, rose hips)500 mg833%Calcium (as calcium carbonate)100 mg10%Lemon Bioflavonoids (from lemon) (fruit)100 mg*Rose Hips (fruit)10 mg** Daily Value not established. Country Life always labels minerals in elemental weight.Other IngredientsCellulose, cellulose & glycerin coating, stearic acid, magnesium oxide, magnesium stearate, silica, vegetable glaze.NO: Yeast, wheat, soy, gluten, milk, salt, sugar, preservatives or artificial color.