I’m not sure about any damage caused in your case, but if you have no symptoms yet, you are probably okay. There is another variety of cinnamon you can use that is much safer, with very low levels of coumarin. read more
Unfortunately, several studies have found that eating too much coumarin may cause liver toxicity and damage (3, 4, 5). For example, a 73-year-old woman developed a sudden liver infection causing liver damage after taking cinnamon supplements for only one week . read more
Sensitive people who consume cinnamon-flavored foods, drinks and food supplements may have a higher risk of liver damage, researchers from the University of Mississippi, USA, and King Saud University, Riyadh, Saudi Arabia, report in the Journal of Agriculture and Food Chemistry. read more