Here's a comment received yesterday on the Spice of Life entry:
Cinnamon Oil said...
The Cinnamon oil sold in the US is actually Cassia oil.
Cassia oil has a chemical called coumarin which could be toxic.
Please click the below link to read more http://www.bfr.bund.de/cd/8487
November 26, 2008 3:17 AM
I vaguely remembered something about this after reading Cinnamon Oil's comment--but apparently it pays to realize the difference between Ceylon cinnamon and cassia. Cinnamon Oil sells pure Ceylon cinnamon oil and other products.
Thanks for leaving the comment!