Ingredient

Calcium Carbonate

Calcium carbonate is an ingredient that neutralizes gastric acid and supplements calcium.

See medicines used for Digestion / Gastritis / Heartburn
All medicines
70
Single ingredient
1
Combination
69
OTC medication
70

MFDS ingredient code M051564

What does it do?

Calcium carbonate is an inorganic compound formed by the combination of calcium and carbonate ions, primarily used in pharmaceuticals as an antacid to neutralize gastric acid and as a calcium supplement. It helps alleviate symptoms of heartburn caused by excessive gastric acid and prevents calcium deficiency.

When calcium carbonate enters the stomach, it reacts with acid to neutralize it, reducing gastric acid levels. This helps relieve symptoms such as heartburn or indigestion. Additionally, it serves as a source of calcium in the body, contributing to the maintenance of bone health.

Commonly used for

Approved uses differ by product. Check each product's information for its actual use.

Good to know

Unlike other antacid components, calcium carbonate has the advantage of supplying calcium as well. Furthermore, it exhibits a rapid gastric acid neutralization effect, making it advantageous for immediate symptom relief.

Medicines containing this ingredient

Even with the same ingredient, strength, dosage form and how it is taken can differ.

Category
Dosage form
Strength
Category

70 total

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Even with the same ingredient, dosage and approved uses can differ by strength, dosage form and combined ingredients. Check each product's information before taking it.

Combined ingredients

Ingredients used together with this ingredient in combination products.

Questions about this ingredient

  • QIf I take calcium supplements and also take heartburn medication, will I have too much calcium?

    Calcium carbonate is used in both antacid and calcium supplement formulations, so if you take both products together, you may be consuming an overlapping amount of calcium. Please check the ingredient labels and consult your pharmacist about whether it is safe to take them together.

    Answers 1 · 2026.09.14

  • QIs calcium carbonate an ingredient in gastric medications or a calcium supplement?

    Both are used. Calcium carbonate is an antacid that neutralizes gastric acid by reacting with it, alleviating heartburn and indigestion, and acts as a source of calcium in the body to prevent calcium deficiency.

    Answers 1 · 2026.09.14

For anything that needs medical judgment, consult a doctor or pharmacist.

SourceKorea Ministry of Food and Drug Safety (Drug Safety Korea)

This drug information is based on data provided by the Korea Ministry of Food and Drug Safety.
Consult a doctor or pharmacist for accurate dosage, administration, and usage instructions.