Milk of Magnesia is an over-the-counter medication containing magnesium hydroxide, commonly used as both an antacid and a laxative. As an antacid, it neutralizes stomach acid to relieve heartburn and indigestion. As a laxative, it works by drawing water into the intestines, softening stool, and promoting bowel movements, typically within 30 minutes to six hours.
Dosage:
As a Laxative:
Adults: 2–4 tablespoonfuls (approximately 30–60 mL) with a full glass of water, preferably at bedtime.
Children (6–11 years): 1–2 tablespoonfuls (approximately 15–30 mL) with a full glass of water.
Children (2–5 years): 1–3 teaspoonfuls (approximately 5–15 mL) with a full glass of water.