About calcium carbonate
Antacid; calcium supplement
Used for
- Relieves occasional heartburn, acid indigestion, and sour stomach
- Provides calcium supplementation
Usual adult dose
For heartburn, chew 2–4 tablets as symptoms occur; follow the package maximum and directions.
Usual dose in children
For children 12 and older, use adult directions. For younger children, follow package age-specific directions or clinician guidance.
Common side effects
- Constipation
- Gas or belching
- Nausea
Important warnings
- Taking too much can cause high blood calcium or kidney problems.
- Use caution with kidney disease or a history of kidney stones.
- Separate from other medicines when directed; calcium can reduce their absorption.
Pregnancy
Generally considered suitable when used as directed; excessive use can cause harm.
Breastfeeding
Generally compatible when used as directed.
Interactions
- Levothyroxine: separate doses by at least four hours.
- Some antibiotics, including tetracyclines and quinolones: calcium can reduce absorption.
- Iron and bisphosphonates: calcium can reduce absorption; separate doses.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.