Milk of magnesia is primarily used as an over-the-counter treatment for constipation and to relieve symptoms of indigestion and heartburn[1][2][3]. It works as a saline laxative by drawing water into the intestines, which softens stool and promotes bowel movements, usually within 30 minutes to 6 hours after taking it[3][6][7]. As an antacid, it neutralizes excess stomach acid to ease discomfort from indigestion, bloating, and heartburn[1][2][4].
Some additional uses, though less supported by scientific evidence, include topical application for skin conditions like acne, oily skin, itchy scalp, and dandruff, but these do not have reliable clinical backing[1][3].
Milk of magnesia should be used for short-term relief only and is generally suitable for adults and children over age three, with dosing instructions varying by age and condition[2][5]. It is important not to use milk of magnesia for more than a week without consulting a healthcare professional, and it is not recommended for chronic constipation[6][7].
References
- [1] Healthgrades: Milk of Magnesia: Uses, Types, Dosages, and Side Effects
- [2] Healthwords: Milk of Magnesia: Uses, Benefits, and How It Works
- [3] Medical News Today: What is milk of magnesia? Uses, types, and side effects
- [4] BYJU’S: List of Uses of Milk of Magnesia
- [5] Rupa Health: How Milk of Magnesia Relieves Constipation and Indigestion
- [6] Healthline: Milk of Magnesia and Constipation Relief
- [7] Cleveland Clinic: Laxative Effect: Using Milk of Magnesia for Constipation