Magnesium hydroxide is an 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 = 5.61 × 10−12). [5] Magnesium hydroxide is a common component of antacids, such as milk of magnesia. The hydroxide ions from the magnesium hydroxide suspension will combine with the acidic H+ ions of the hydrochloric acid made by the stomachs parietal cells. This neutralization reaction will result in the formation of magnesium chloride and water. Magnesium hydroxide (Mg (OH)₂) is an inorganic compound commonly known as milk of magnesia in its suspended form. This white, solid material plays crucial roles in various applications, from medical uses to industrial processes, due to its unique chemical properties and mild alkaline nature. Magnesium Hydroxide is used in the treatment of Acidity, Intestinal ulcers, Stomach ulcers. View Magnesium Hydroxide ’s uses, side-effects, drug interactions, expert advice and user FAQs only on 1mg.com.