Coumarin is fine in small doses, and the German Federal Institute for Risk Assessment recommends consuming less than 0.1 milligrams of coumarin per kilogram of body weight. They state that higher intake for a short period is not dangerous. European health agencies limit the amount of coumarin from cinnamon that can be in baked goods and desserts. The United States Food and Drug Administration lists coumarin among the “Substances Generally Prohibited From Direct Addition or Use as Human Food.”

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