Germany’s Federal Institute for Risk Assessment issued a warning that a 132-pound adult who regularly eats more than 2 grams (0.07 ounces) of cassia cinnamon daily could suffer harmful side effects. These side effects are attributed to coumarin a compound which when consumed in excess can cause damage to the liver. The agency reports no side effects, however, from occasional consumption of cinnamon. Other European countries have issued formal warnings advising consumers accordingly. The U.S. FDA lists cassia and Ceylon cinnamon is safe for human consumption, but it does not specify quantities.
Cinnamon primarily contains vital oils and other derivatives, such as cinnamaldehyde, cinnamic acid, and cinnamate. The presence of a wide range of essential oils, such as trans-cinnamaldehyde, cinnamyl acetate, eugenol, L-borneol, caryophyllene oxide, b-caryophyllene, L-bornyl acetate, E-nerolidol, α-cubebene, α-terpineol, terpinolene, and α-thujene, has been reported.
The spice has numerous medicinal properties attributed to it. Many of these properties have been validated in animal trials.
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