Calcium Carbonate offered by us, is a dietary supplement used when the amount of calcium taken in the diet is not enough. Calcium is needed by the body for healthy bones, muscles, nervous system, and heart. This also is used as an antacid to relieve heartburn, acid indigestion, and upset stomach. Calcium Carbonate decomposes to form carbon dioxide and lime, an important material in making steel, glass, and paper. Because of its antacid properties, this is used in industrial settings to neutralize acidic conditions in both soil and water.It is a white insoluble powder-like substance which occurs naturally in minerals, chalk, marble, limestone, calcite, shells, pearl, etc.It is also used as fillers in cosmetics.