Calcium carbonate (Tums)
Antacid. Neutralizes stomach acid. Minimal systemic CNS effects. No direct brain effect — does not cross the blood–brain barrier.
Benefits
Fast-acting antacid that neutralizes stomach acid for quick heartburn relief, and a source of supplemental calcium.
Risks
Overuse can cause constipation, elevated calcium, and (with lots of dairy) milk-alkali syndrome; it also reduces absorption of some drugs and doesn’t treat the cause of reflux.
Informational only — not medical advice.
Body systems
Organs
Where to buy
Popular Calcium carbonate (Tums) products on Amazon. Not medical advice — talk to a clinician before starting a supplement.
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Research (3)
- Over-the-Counter Medications in Pregnancy Powers et al. (2023) PubMed ↗
- Magnesium for skeletal muscle cramps Garrison et al. (2020) PubMed ↗
- Calcium supplementation in clinical practice: a review of forms, doses, and indications Straub (2007) PubMed ↗
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