Calcium Carbonate

Caution

Anti-caking Agent

Calcium carbonate, known as E170, is a common food additive used as an anti-caking agent, acidity regulator, or dietary calcium supplement.

What is Calcium Carbonate?

Calcium carbonate is a chemical compound with the formula CaCO3, commonly derived from natural sources such as chalk, limestone, and marble. It is widely used in the food industry for various purposes, including as an anti-caking agent, acidity regulator, or to fortify foods with calcium. While it can be sourced from non-animal materials, it may also be derived from egg shells or animal bones. Therefore, individuals following a strict vegan diet should verify the source to ensure it aligns with their dietary preferences.

Also known as:

E170Chalk170

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Diet Compatibility

VeganCaution

Calcium carbonate (also called e170 or chalk) usually comes from chalk, limestone, or marble, though it can come from egg shells or animal bone. If the label does not provide a source, we recommend calling the manufacturer.

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VegetarianCaution

Calcium carbonate (e170 or chalk) usually comes from chalk, limestone, or marble, though it can come from egg shells or animal bone. If the label does not provide a source, we recommend calling the manufacturer.

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Alpha-Gal FriendlyCaution

Calcium carbonate (also called e170 or chalk) usually comes from chalk, limestone, or marble, though it can come from egg shells or animal bone. If the label does not provide a source, we recommend calling the manufacturer.

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Dairy FreeSafe

This ingredient is generally considered compatible with a Dairy Free diet.

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Gluten FreeSafe

This ingredient is generally considered compatible with a Gluten Free diet.

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Low FODMAPSafe

This ingredient is generally considered compatible with a Fodmap diet.

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Compatibility ratings are general guidelines and may vary by individual. Always consult a healthcare professional for personalized dietary advice.

Why People Avoid Calcium Carbonate

People may avoid calcium carbonate for dietary restrictions, particularly vegans, due to its potential animal origin. Although it is often derived from mineral sources like chalk or limestone, it can also be sourced from animal bones or egg shells. Without clear labeling, it is difficult to determine the specific source, so individuals who strictly adhere to a vegan diet or have ethical concerns about animal-derived products may choose to avoid it or contact manufacturers for clarification.

Potential Reactions

  • Constipation
  • Bloating
  • Gas

This information is for educational purposes only and should not be considered medical advice. Individual reactions can vary. Consult a healthcare professional if you have concerns about specific ingredients.

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Foods That Commonly Contain Calcium Carbonate

Baking powder
Fortified plant-based milks
Calcium supplements
Tofu
Antacids

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Frequently Asked Questions

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