Cinnamon is one of the world’s oldest and most beloved spices, but not all cinnamon is created equal. The fragrant sticks most often found in supermarkets are usually cassia cinnamon. In contrast, Ceylon cinnamon (Cinnamomum zeylanicum)—sometimes called “true cinnamon”—is gentler, lower in potentially harmful coumarin, and rich in beneficial compounds that make it especially interesting in modern phytotherapy.
Nature’s Triple Action
1. Natural Antibacterial
The essential oils of Ceylon cinnamon, especially cinnamaldehyde and eugenol, have demonstrated antibacterial activity against bacteria such as E. coli and Staphylococcus aureus. This helps explain why cinnamon has been used for centuries to preserve foods and why it is now studied for its potential antimicrobial applications.
2. Calming Inflammation
Chronic, low-grade inflammation is associated with many modern health concerns, from cardiovascular disease to metabolic disorders. Research suggests that cinnamon may help modulate inflammatory and oxidative stress markers, including IL-6 and total antioxidant capacity.
3. Strong Antioxidant
Cinnamon bark is packed with antioxidants—plant compounds that help neutralize free radicals and support the body’s own defense enzymes. These antioxidant properties are one reason cinnamon is linked with healthy aging.
Why Choose Ceylon?
Cassia cinnamon, while widely available, contains higher levels of coumarin, a natural compound that can be stressful for the liver in larger amounts. Ceylon cinnamon has only trace levels of coumarin and is therefore generally considered a preferable option when cinnamon is consumed regularly.
How It’s Being Used Today
- Blood sugar balance – Clinical studies show cinnamon may improve insulin sensitivity and help regulate blood sugar levels in type 2 diabetes.
- Oral care – Its antibacterial properties have also led to its use in mouthwashes and natural chewing gums.
- Traditionally used as everyday immune support – A simple sprinkle in warm drinks or meals may offer more than just flavor.
- Supplements for targeted support –
Ceylon cinnamon is increasingly included in standardized supplement blends, where it complements other plant extracts. In metabolic health formulations, it may support blood sugar regulation and helps reduce oxidative stress. - In Primrose Laboratories’ range, Ceylon cinnamon appears in carefully designed blends to complement other plant extracts:
- URI-D – Designed for urinary tract support, URI-D combines Ceylon cinnamon with D-mannose and plant extracts including cranberry, Java tea, oregano, dandelion and camu camu. Cinnamon contributes its well-studied antimicrobial properties, making it a particularly interesting botanical ingredient in the context of urinary tract health and recurrent infections.
- GLACANDIAL – Developed to support vaginal health and balance, GLACANDIAL combines Ceylon cinnamon with Amur cork tree, goldenseal, oregano, Japanese goldthread and elecampane. Cinnamon is particularly valued here for its antimicrobial and antifungal properties, including its activity against different Candida species.
- Beyond these blends, cinnamon’s antioxidant and potential effects on circulation also make it an attractive candidate in formulations supporting vascular health and immunity.
Takeaway
Beyond the kitchen, Ceylon cinnamon has earned a place in modern phytotherapy. With its antibacterial, anti-inflammatory, and antioxidant properties, it has been studied for its potential role in areas ranging from blood sugar balance to urinary and metabolic health—all while offering much lower levels of coumarin than cassia cinnamon.
REFERENCES
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Ranasinghe P, et al. (2013). Medicinal properties of “true” cinnamon (C. zeylanicum): a systematic review. BMC Complement Altern Med.
Moridpour AH, Kavyani Z, Khosravi S, Farmani E, Daneshvar M, Musazadeh V, Faghfouri AH. The effect of cinnamon supplementation on glycemic control in patients with type 2 diabetes mellitus: An updated systematic review and dose-response meta-analysis of randomized controlled trials. Phytother Res. 2024 Jan;38(1):117-130.
Moselhy SS, Ali HK. (2009). Hepatoprotective effect of cinnamon against carbon tetrachloride-induced oxidative stress. J Med Food.
Mathew S, Abraham TE. (2006). Antioxidant activities of cinnamon (C. zeylanicum) bark extracts. Food Chem.
Woehrlin F, Fry H, Abraham K, Preiss-Weigert A. (2010). Quantification of flavoring constituents in cinnamon: high variation of coumarin in cassia bark from the German retail market and in authentic samples from Indonesia. Journal of Agricultural and Food Chemistry, 58(19), 10568–10575.
Akilen R, Tsiami A, Devendra D, Robinson N. Glycated haemoglobin and blood pressure-lowering effect of cinnamon in multi-ethnic Type 2 diabetic patients in the UK: a randomized, placebo-controlled, double-blind clinical trial. Diabet Med. 2010 Oct;27(10):1159-67.
Zhang K, Li Y, Lin X, Daneshar M, Karamian F, Li M. Effect of cinnamon supplementation on blood pressure, oxidative stress, and inflammatory biomarkers in adults: An umbrella review of the meta-analyses of randomized controlled trials. Nutr Metab Cardiovasc Dis. 2024 Dec;34(12):2659-2668. doi: 10.1016/j.numecd.2024.08.009. Epub 2024 Aug 24. PMID: 39299867.

