About calcium carbonate
Calcium supplement and antacid
Used for
- Relief of heartburn, acid indigestion, and upset stomach
- Calcium supplementation when dietary intake is inadequate
Usual adult dose
For heartburn: 500–1,000 mg as needed; follow product directions and maximum daily limit.
Common side effects
- Constipation
- Gas or bloating
- Nausea
Important warnings
- Separate from other medicines because calcium can reduce their absorption.
- Excess use may cause high blood calcium or kidney stones.
- Use caution with kidney disease or a history of kidney stones.
Pregnancy
Generally considered acceptable at recommended doses; excessive intake can be harmful.
Breastfeeding
Generally compatible at recommended doses.
Interactions
- Levothyroxine and some antibiotics, including tetracyclines and quinolones
- Iron supplements
- Bisphosphonates
- Thiazide diuretics
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 It may be incomplete or out of date.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.