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MedicinePOMEssential

Calcium Carbonate

Calcium carbonate is an antacid that relieves heartburn, acid indigestion and upset stomach.

Clinical information

Common uses

  • heartburn
  • acid indigestion and sour stomach
  • upset stomach with these symptoms

Cautions

  • do not use the maximum dose for more than 2 weeks without a
  • ask a doctor or pharmacist first if taking any prescription drug

Interactions

  • antacids may interact with certain prescription drugs — ask a pharmacist

Pregnancy: if pregnant, do not take more than 5 tablets in 24 hours

Reference information, not medical advice — always follow your doctor or pharmacist. Source: DailyMed, dailymed.nlm.nih.gov, TUMS Ultra (calcium carbonate) OTC label, setid 348d3dfa-6a52-4583-96e3-83c4bf2df45b (accessed 2026-08-16)

Approved brands & formulations2

Brand nameDosage formStrengthImporterCategory
Calcium CarbonateTablet500mg—POM
Calcium CarbonateOral Liquid400mg/5ml—POM
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