Coumarin is a natural plant chemical found in many tree barks including cinnamon. There are higher levels of coumarin in Cassia than in Ceylon cinnamon. Some studies suggest that if you consume large amounts of coumarin, it can cause liver damage. The average adult would need to consume roughly 15 cups of Cassia cinnamon per day to reach the lethal dosage.
As a precaution, we are routinely provided coumarin test results on our Cassia cinnamon. The 2021 test showed a very low coumarin content of 3,800 mg/kg or .0038%.
Please note that we are not making a judgment on the safety of consuming any food product. We are providing information that we have researched. It is up to you to make an informed decision.