Ecological Formulas Buffered C Crystals(non-corn) provides buffered vitamin C in crystal form to aid in neutralizing the hyperacidity commonly associated with ascorbic acid. The crystals are from a non-corn source with no corn antigens. The pantothenic acid source is the purest USP grade form available of calcium pantothenate and the mineral bicarbonates are naturally occurring minerals. Recommended usage: Mix one teaspoon or more into water or your favorite cold drink. Two teaspoons supply the recommended daily allowance for calcium and magnesium.Ecological Formulas Buffered Vitamin C Crystals Facts: 1/2 teaspoon (2.5g) contains: Vitamin C (as ascorbic acid from tapioca) 1,250 mg Pantothenic Acid (as d-calcium-pantothenate) 5 mg Calcium (as calcium carbonate) 212.5 mg Magnesium (as magnesium carbonate, magnesium oxide) 137.5 mg Zinc (as zinc gluconate) 0.75 mg Manganese (as manganese citrate) 0.25 mg Potassium (as potassium bicarbonate) 50 mg Other Ingredients: none.