Magnesium is a mineral that the body requires to operate correctly and Magnesium Oxide can be used for a variety of purposes. Some individuals use it as an antacid to treat heartburn, indigestion, or sour stomach. Magnesium oxide can also be used as a laxative for short-term, fast stool emptying. It is also utilised as a food supplement when the magnesium stores of the body are depleted. Moreover, Magnesium Oxide is available as a tablet and capsule for oral use.