Yes…and you will find all that information here http:///2013/06/15/spice-cinnamon-a-major-cin-2/ . Always make the distinction between the two. True Ceylon Cinnamon powder in large amounts (this is relative…a cup a day is of course ridiculous) is not a problem…cassia is a big one. True Ceylon Cinnamon has very very low amounts of coumarin compared to cassia which is mostly what is sold in the US. True Cinnamon is what one finds here in Europe generally and in the UK, cassia is clearly labeled.