Magnesium Hydroxide for Heartburn
Medically reviewed by a licensed pharmacist · Last reviewed 5/24/2026
Dose
5-15mL by mouth as needed for heartburn, or 2-4 chewable tablets. Max 60mL or 16 tablets in 24 hours. Often combined with aluminum hydroxide to balance bowel effects.
What to watch for
- Severe renal impairment
- Intestinal obstruction
Not for children under 12.
Sources
- FDA OTC Monograph
- American College of Obstetricians and Gynecologists
Where to buy
This page is for general education and is not medical advice. It does not replace a consultation with a licensed pharmacist or your clinician. Always read and follow the product label. If symptoms are severe, worsening, or persistent, seek professional care.