Calcium carbonate is the most concentrated form of calcium used in supplements, which is why tablets stay a manageable size. It needs stomach acid to dissolve, so it is taken with food, and vitamin D is added to help the body absorb it.

What Calcium Carbonate with Vitamin D Is Used For

  • Topping up calcium when the diet is short of it
  • Bone support in older adults and after menopause
  • Part of treatment for osteoporosis alongside prescribed medicines
  • Some products double as an antacid for heartburn

Common Side Effects

  • Constipation
  • Belching and bloating
  • Nausea if taken on an empty stomach

Precautions

Take it with a meal, since acid suppressing medicines such as omeprazole reduce how well calcium carbonate dissolves. Splitting the day into smaller amounts is absorbed better than one large dose. Anyone with kidney stones or kidney disease should ask their doctor before starting.

This page is general information only. It is not a substitute for advice from your doctor or pharmacist, and it does not include dosage. Always follow the directions given to you and read the leaflet inside the pack.

Medicines Containing Calcium Carbonate + vitamin D