Calcium Carbonate for Heartburn
Medically reviewed by a licensed pharmacist · Last reviewed
Reviewed against: FDA OTC Monograph · American College of Obstetricians and Gynecologists
Dose
Chew 2-4 tablets (500-1000mg each) as needed when symptoms occur. Max 7000mg in 24 hours, or 3000mg/day if pregnant.
What to watch for
- Hypercalcemia
- Severe renal impairment
- Calcium kidney stones
Not for children under 12.
Sources
- FDA OTC Monograph — FDA-OTC-Monograph-Antacid-21CFR331
- American College of Obstetricians and Gynecologists
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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.