Ingredient

Calcium Carbonate & Magnesium Carbonate

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Source
Not animal-derived
Allergen
No
Role in food
These minerals are often added to foods as nutrient supplements, providing calcium and magnesium. …

What it is

Calcium carbonate and magnesium carbonate are mineral compounds that occur naturally in rocks and minerals. They are processed and purified for use in food. These minerals are essential nutrients for the human body.

Why it's used

These minerals are often added to foods as nutrient supplements, providing calcium and magnesium. They can also function as acidity regulators, helping to control the pH of foods. You might find them in baked goods like breads and buns, and sometimes in dietary supplements.

Health notes

Calcium carbonate and magnesium carbonate are generally recognized as safe (GRAS) by the FDA when used as nutrients or for other food additive purposes. They are important for bone health and other bodily functions. JECFA has evaluated these substances and established acceptable daily intakes. Evidence does not suggest adverse health effects from typical dietary intake.

Allergen info

Not a major allergen. Calcium and magnesium are minerals and are not derived from the major allergens. They do not contain gluten.

Products containing Calcium Carbonate & Magnesium Carbonate

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Last updated: September 28, 2026

Note: This site presents label data from USDA FoodData Central for general information. It is not medical advice. Check the package label; formulations change.