Ceylon or cassia, bark or leaf: why do these distinctions really matter?
Cinnamon encompasses several products under a single name—and confusing them can lead to unpleasant surprises, especially with essential oils.
In herbal medicine, two species stand out: Ceylon cinnamon (Cinnamomum verum, Sri Lanka) and cassia (Cinnamomum cassia, China). The key practical difference: cassia is much richer in coumarin than Ceylon cinnamon. The EFSA has set the tolerable daily intake of coumarin at 0.1 mg/kg—a concern primarily with dietary supplements made from concentrated cassia, not with the occasional cup of herbal tea.
- For dietary supplement regimens: always check for “Cinnamomum verum” on the label
- For occasional herbal tea: both species are suitable
- Cinnamonbark essential oil: predominantly cinnamaldehyde (65–75%)—very potent, dermocaustic, irritating to mucous membranes—for adult use only, highly diluted (0.5–1% max)
- Cinnamon leaf essential oil: predominantly eugenol (70–80%) — profile similar to clove, slightly less dermocaustic — but still potent — do not confuse the two on the label
What are the uses of cinnamon for digestive comfort?
This is the best-documented use in traditional herbal medicine—and the most accessible.
Cinnamaldehyde stimulates digestive secretions and slightly relaxes the smooth intestinal muscles. Cinnamon is carminative, a mild antispasmodic, and aids digestion—particularly useful after heavy meals during the winter months.
- Herbal tea: 1 Ceylon cinnamon stick (or 1/2 tsp. powder) in 250 mL of water at 90°C, steep for 10 minutes—drink 1 cup after a hearty meal
- Winter Digestive Trio: cinnamon + ginger + cardamom —a warming, digestive herbal tea for winter
- Digestive Comfort Blend: cinnamon + green anise — warm, anise-scented notes, aids digestion and acts as a carminative
How to use cinnamon essential oil in aromatherapy?
It is one of the most potent essential oils in the catalog—to be used with great care.
- Diffusion: 2–3 drops maximum mixed with other essential oils (eucalyptus, ravintsara)—cinnamon warms and purifies the air but can become overpowering quickly—supports winterimmunity
- Massage: 0.5–1% bark essential oil in a carrier oil only—never undiluted, never on the face—provides a warming sensation on tense muscles
- Warming blend for sports: cinnamon + black pepper + ginger — the “muscles and warming” trio before exercise
- Winter support via diffusion: cinnamon + clove + sweet orange — the “non-alcoholic mulled wine” blend to purify the air in your home
What precautions should be taken with cinnamon essential oil and supplements?
- Bark essential oil: dermocaustic—always dilute to a maximum of 0.5–1%, never apply undiluted—perform a skin test before widespread use
- Leaf essential oil: slightly less irritating but same dilution precautions
- Pregnant and breastfeeding women: not recommended as an essential oil—occasional, mild herbal tea is tolerated
- Children under 12: Essential oil is contraindicated
- Anticoagulants: cinnamon may potentiate their effects (coumarins and cinnamaldehyde)—inform your doctor
- Dietary supplements: Specify “Cinnamomum verum” to limit exposure to coumarin (EFSA limit)
- Reflux and ulcers: Cinnamon stimulates gastric secretions — not recommended
