Post Time: 2025-02-18
Error: No content files found.ConsumerLab's Dr. Tod Cooperman explains the major differences among popular cinnamon supplements and spices based on the amounts of beneficial PACs and potentially toxic coumarin and lead that ConsumerLab found in its tests, reported at Also, learn about cinnamon's effect on blood sugar and cinnamon dosage. See the full report for CL's Top Picks and to find out which Ceylon cinnamon was probably not Ceylon, but less expensive cassia cinnamon, posing a potential safety risk. 0:00 What ConsumerLab visit here found when we tested cinnamon supplements 0:34 Different types of cinnamon 1:47 Lead Highly recommended Web-site in this cinnamon supplements 2:10 Why use cinnamon as a supplement 2:40 PACs in cinnamon supplements 3:05 Become a member to see ConsumerLab's Top Picks of cinnamon supplements Is cinnamon safe? What did ConsumerLab find? A concern with cinnamon is that it may contain significant amounts of coumarin — a naturally occurring compound that may cause liver toxicity and is a potential carcinogen. Coumarin can be high in cassia cinnamon (the most common type of cinnamon), but should be low in Ceylon cinnamon — also called "true" cinnamon or Cinnamonum verum — which is, typically, more expensive. However, ConsumerLab found that a "Ceylon" cinnamon product contained 4 mg of coumarin per serving — more than any other cinnamon supplement, suggesting that it is mislabeled. None of the products, however, exceeded the tolerable daily intake limit of 7 mg for an average-sized adult, but two exceeded the limit for children (see coumarin amounts in the Results Tables for Supplements and for Spices You can become a ConsumerLab.com member now at for immediate access to exclusive reviews of over 1,000 products, hundreds of CL Answers, warnings, and other information about supplements and natural products that you won't find anywhere else! Not ready to become a member yet? Sign up for our FREE newsletter #cinnamonreviews #ceyloncinnamon #cinnamondosage