Magnesium hydroxide also reduces stomach acid, and increases water in the intestines which may induce defecation. Magnesium hydroxide is used as a laxative to relieve occasional constipation (irregularity) and as an antacid to relieve indigestion, sour stomach, and heartburn.Dec 10, 2018
Magnesium hydroxide is the inorganic compound with the chemical formula Mg(OH)2. It occurs in nature as the mineral brucite. It is a white solid with low solubility in water (Ksp = 5.61Ã10â12). Magnesium hydroxide is a common component of antacids, such as milk of magnesia, as well as laxatives.