About calcium carbonate us
Calcium supplement and antacid
Used for
- Prevention and treatment of calcium deficiency
- Bone health support, including osteoporosis prevention
- Relief of heartburn and indigestion
Usual adult dose
For calcium supplementation, commonly 500–1,200 mg elemental calcium daily in divided doses. For heartburn, follow product directions.
Usual dose in children
For supplementation, doses vary by age and dietary intake; clinician-directed dosing is typical. Not routinely used for children’s heartburn.
Common side effects
- Constipation
- Gas or bloating
- Nausea
- High blood calcium with excessive use
Important warnings
- Take with food for better absorption; divide larger daily amounts.
- Separate from iron, thyroid medicine, and some antibiotics by several hours.
- Use caution with kidney disease, kidney stones, or high blood calcium.
- Antacid use can mask persistent or serious stomach symptoms.
Pregnancy
Calcium is commonly used in pregnancy when needed; total intake should account for food and other supplements.
Breastfeeding
Generally compatible with breastfeeding when used as directed.
Interactions
- Reduces absorption of levothyroxine; separate doses by at least four hours.
- Can reduce absorption of tetracycline and quinolone antibiotics; separate doses as directed.
- May reduce iron absorption; taking doses at different times can help.
- Thiazide diuretics may increase the risk of high blood calcium.
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 It may be incomplete or out of date.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.