About calicum carbonate
Calcium supplement and antacid
Used for
- Prevention or treatment of calcium deficiency
- Relief of heartburn, indigestion, and acid reflux
Usual adult dose
For calcium deficiency, doses vary; commonly 500–1,500 mg elemental calcium daily in divided doses. For heartburn, follow product directions.
Usual dose in children
For deficiency, dose depends on age and dietary calcium intake; clinician-directed dosing is preferred.
Common side effects
- Constipation
- Bloating or gas
- Nausea
- High blood calcium with excessive use
Important warnings
- Separate from iron, thyroid medicine, and certain antibiotics; calcium can reduce their absorption.
- Use caution with kidney disease, kidney stones, or high blood calcium.
- Large doses may cause milk-alkali syndrome, with kidney problems and altered blood chemistry.
Pregnancy
Calcium carbonate is generally considered compatible with pregnancy when used as directed; excessive intake can be harmful.
Breastfeeding
Generally compatible with breastfeeding at recommended doses.
Interactions
- Levothyroxine: separate by at least four hours.
- Tetracycline or quinolone antibiotics: calcium can reduce absorption; separate doses as directed.
- Iron and bisphosphonates: calcium can reduce absorption; separate doses.
- Thiazide diuretics or digoxin: increased risk of high calcium or abnormal heart rhythm.
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 It may be incomplete or out of date.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.