In the Know: Learn to Identify Real Cinnamon  Before getting to its uses, here’s a fact you may want to consider. Much of the cinnamon available is not real cinnamon (Cinnamon Verum or Cinnamomum Zeylancium), it is Cassia. Cassia contains substances that have strong anticoagulant properties, which may be harmful to the liver when consumed in large quantities. It is easier to spot the difference between the two when buying cinnamon sticks. Though, it is a lot harder to identify real cinnamon in its powder form.