Description Pure Powder High Percentage of Calcium NOW Calcium Carbonate is a Calcium supplement containing one of the highest concentrations of elemental Calcium available. Its high Calcium content makes it an excellent form for the support of healthy bones and teeth. * Natural color variation may occur in this product. This product is sold by weight not volume. Suggested use Take 1/2 level teaspoon daily, preferably with a meal. For best results, blend into “pulpy” type juices such as tomato or orange juice. Store in a cool, dry place after opening.