Allergy Research Buffered Vitamin C Capsules contains high-purity ascorbic acid buffered with carbonates of calcium and magnesium. Buffered C has an acid-alkaline buffering action that can help control the increased acidity often associated with allergic reactions. Allergy Research Buffered Vitamin C was developed by Stephen A. Levine, Ph.D.Suggested Use:As a dietary supplement, 2 to 4 capsules, two or three times daily between meals, or as directed by a healthcare practitioner.Amount per serving:Serving Size; 4 capsulesServings per container; 30Ingredients: Vitamin C (as Ascorbic Acid); 2000 mg Calcium (as Calcium Carbonate); 380 mg Magnesium (as Magnesium Carbonate); 208 mg Other ingredients: Hydroxypropyl methylcellulose, cellulose, silicon dioxide, stearic acid.These nutrients are of the highest quality and purity obtainable, and do not contain preservatives, diluents, or artificial additives.