10 Evidence-Based Health Benefits of Cinnamon
Not all cinnamon is created equal.
The Cassia variety contains significant amounts of a compound called coumarin, which is believed to be harmful in large doses.
All cinnamon should have health benefits, but Cassia may cause problems in large doses due to the coumarin content.
Ceylon (“true” cinnamon) is much better in this regard, and studies show that it’s much lower in coumarin than the Cassia variety (39).
Unfortunately, most cinnamon found in supermarkets is the cheaper Cassia variety.
You may be able to find Ceylon in some health food stores, and there is a good selection on Amazon.
more info : https://www.healthline.com/nutrition/10-proven-benefits-of-cinnamon