The report discusses the clinical evidence for cinnamon and the differences between different types of cinnamon as well as potential side effects and drug interactions.įounded in 1999, is a leading provider of consumer information and independent evaluations of products that affect health and nutrition. Another two products were tested and approved through CL's voluntary Quality Certification Program: Nature's Bounty Cinnamon 2,000 mg and Puritan's Pride Cinnamon with High-Potency Chromium. Fifteen products were selected for testing by ConsumerLab: 365 Cinnamon Ground, Badia Cinnamon Powder, FGO Organic Ceylon Cinnamon Powder, Finest Nutrition Cinnamon, Mason Natural Whole Herb Cinnamon Alpha Lipoic Acid, McCormick Ground Cinnamon, Natural Factors WellBetX CinnamonRich, Nature's Answer Fluid Extract Cinnamon Bark, NutriFlair Ceylon Cinnamon, Oregon's Wild Harvest "True" Cinnamon (Ceylon), Ceylon Cinnamon 2,000 mg, ProCaps Laboratories Cinnamon 350, Simply Organic Vietnamese Cinnamon, Swanson Cinnulin PF Cinnamon Extract, and Trunature Advanced Strength CinSulin. The results are available online in ConsumerLab's new Cinnamon Supplements Review, which includes test results and comparisons for 17 products. It also selected three Top Picks among cinnamon spices to minimize coumarin and lead exposure.Ī short video about the cinnamon findings by ConsumerLab's President, Dr. Significant amounts of coumarin were also found in cinnamon spices, ranging from 3.4 mg to as much as 6.2 mg of coumarin per gram (about half a teaspoon).Īmong the supplements that were Approved, ConsumerLab selected one that provides a clinically meaningful dose of cinnamon with relatively low coumarin as its Top Pick. Most disturbingly, a supplement that contained the highest amount of coumarin was labeled as Ceylon cinnamon, a type of cinnamon that should contain very little coumarin, suggesting it was mislabeled and is likely cassia cinnamon. There is no established limit in the U.S.). Among supplements, the cost to obtain 100 mg of proanthocyanidins (PACs) ranged from 30 cents to $4.88, with the most expensive supplement surprisingly providing the least amount of PACs. The test revealed a wide variation in the amounts of PACs in supplements - from 4.8 mg to 44.9 mg per suggested serving. In addition to tests for PACs, coumarin, and heavy metals (lead, cadmium, and arsenic) products made of cinnamon bark powder were tested for Salmonella and those sold as spices were checked for filth (insect parts and animal hair). To find out, ConsumerLab purchased and tested popular cinnamon supplements and spices sold in the U.S. So which cinnamon supplements and spices provide the best quality cinnamon, without high amounts of coumarin, at the lowest cost? However, the most common type of cinnamon, cassia cinnamon, can contain significant amounts of coumarin, a liver toxin and potential carcinogen, and heavy metals - particularly, lead. White Plains, New York, DecemCinnamon is a favorite spice that may modestly help lower blood sugar levels, likely due beneficial proanthocyanidins (PACs).
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