Widely used as an antacid to neutralize stomach acid and relieve heartburn, indigestion, and upset stomach. It is also employed as a laxative to treat constipation by drawing water into the intestines and promoting bowel movements. In industrial applications, it serves as a flame retardant due to its ability to release water vapor when heated, which helps suppress fire and reduce smoke. Commonly found in wastewater treatment to neutralize acidic effluents and control pH levels. Also used in the production of other magnesium compounds and as a filler or additive in pharmaceuticals and cosmetics.