Beryl (Nottingham UK) on 04/09/2019:

Hello, I'm pre diabetic and recently my blood sugar readings have gone up which has naturally worried me, so I've been looking into taking cinnamon to bring the levels down. And it has disturbed me greatly to discover that a lot of the suppliers are not ruthlessly honest about their source of cinnamon, and are indeed selling cinnamon cassia which contains high levels of coumarin which can potentially harm the liver and cause cancer. One company usually known for the quality and reliability of their products, supplies capsules of cinnamon burmanni to their customers and apparently this contains the highest amount of coumarin. So, if you're taking cinnamon please check that you're not taking the harmful variety.

Best wishes.