Calcium carbonate is a dietary supplement used when the quantity of calcium taken in the diet is not enough. Used as an antacid to relieve heartburn, acid indigestion and upset belly. Practiced in the expression industry. Also widely used as a filler in plastics and is used in metallurgy of iron.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.