contain varying amounts of coumarin, a compound that may be harmful to the liver when consumed in large amounts, particularly by people who already have liver problems. Ceylon cinnamon generally contains only trace amounts of coumarin.
For most people, using cinnamon in normal culinary quantities is considered safe. Problems are more likely to become relevant when large amounts or concentrated cinnamon products are consumed regularly.
Who Should Be Careful?
Extra caution may be appropriate for people who:
- Have liver disease
- Take diabetes medication
- Take blood-thinning medication
- Regularly consume large amounts
