Medical Use: • This medication is a mineral supplement used to prevent and treat low amounts of magnesium in the blood. • Magnesium is important for many systems in the body, especially the muscles and nerves. • Magnesium chloride is used to treat or prevent magnesium deficiency (lack of natural magnesium in the body). • Magnesium chloride is used in several medical and topical (skin related) applications. • Also used to treat symptoms of too much stomach acid such as stomach upset, heartburn, and acid indigestion. Food Industry: Magnesium chloride is easily soluble in water. It is an important coagulant, used in the preparation of tofu, soy, beverages and baby formula milk. Magnesium chloride is also used as a flavouring agent in the brewing of beer, and for color retention in foods .