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Is Calcium Carbonate vegan?

Calcium Carbonate

Vegan

Calcium carbonate is an odourless, tasteless white powder occurring naturally in limestone, marble, chalk, coral, eggshells, and oyster shells. It is widely used as an antacid, dietary calcium supplement, abrasive in toothpaste, and food additive.

Also known as Aragonite, Calcite, Chalk, Limestone, Whiting
E number E170
CAS number 471-34-1
EC number 207-439-9
Last reviewed 16 April 2026

Classifications are made to the best of our knowledge based on available scientific and regulatory sources. We cannot guarantee the accuracy of every entry, errors in the sources we draw from can always occur. This tool also cannot account for cross-contamination, which depends entirely on individual suppliers and producers. If you believe a classification is incorrect, you can report an issue.