Magnesium carbonate, with the chemical formula MgCO3, is a white, odorless, and tasteless solid that occurs naturally in various minerals like magnesite and dolomite. It is commonly used in diverse applications, notably as an antacid and drying agent in the pharmaceutical and cosmetic industries. In antacids, magnesium carbonate helps alleviate heartburn and indigestion by neutralizing excess stomach acid. It also finds use in sports chalk and as a drying agent for hands in gymnastics, weightlifting, and rock climbing to enhance grip. Additionally, magnesium carbonate has industrial applications as a flame retardant and filler in plastics, rubber, and ceramics. Its versatility and safety in various contexts make magnesium carbonate a valuable compound with multiple practical uses.