Overview "Frequently Asked Questions about coumarin in cinnamon and other foods"
How much coumarin does cinnamon contain?
A rough distinction can be made between two types of cinnamon. Ceylon cinnamon only contains low levels of coumarin which are safe from the Institute’s risk assessment perspective. By contrast, cassia cinnamon contains high levels of coumarin and large amounts of this cinnamon should not, therefore, be eaten.
