Is Calcium Carbonate Pescatarian?
CautionSometimes. 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.
Calcium Carbonate and the Pescatarian Diet
Calcium carbonate, also known by its food additive code E170, is a compound commonly used as a calcium supplement or as an anti-caking agent in food products. It naturally occurs in limestone, chalk, and marble and is primarily derived from non-animal sources. Occasionally, it can be sourced from egg shells or animal bones, which may be a concern for certain dietary preferences.
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How Spoonful reviews ingredients
- Evidence-based. Diet compatibility ratings are compiled from peer-reviewed nutrition guidance, dietary association recommendations, and ingredient composition data.
- Continuously updated. Our ingredient database is refreshed as new sources and product data become available.
- Transparent uncertainty. When an ingredient's safety depends on serving size, preparation, or sub-ingredients, we mark it “caution” rather than forcing a binary answer.
- Not medical advice. Ratings are general guidance. Always consult a registered dietitian for personalized recommendations.
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