# Plant Monograph: Cinnamon Bark
**Name of plant:**
Cinnamon Bark
**Catch phrase (Carmina Gadelica or traditional invocation if available):**
No traditional Carmina Gadelica invocation is recorded for cinnamon. A traditional saying from the spice trade era states: **“Worth its weight in gold, warming both body and spirit.”**
**Family:**
Lauraceae — Laurel family
**Genus and species:**
*Cinnamomum verum* J. Presl (True or Ceylon Cinnamon)
*Cinnamomum cassia* (L.) J. Presl (Cassia Cinnamon)
**Other names:**
Cinnamon, true cinnamon, Ceylon cinnamon, sweet cinnamon, cassia, Chinese cinnamon, Saigon cinnamon, Korintje cinnamon, sweet wood bark, dalchini (India), gui pi (China).
**Brief introduction:**
Cinnamon is the dried inner bark of several species of evergreen trees native to South and Southeast Asia. It has been treasured for thousands of years as a spice, perfume ingredient, medicinal herb, and trade commodity. Ancient civilizations valued cinnamon so highly that it was once considered a gift fit for kings and deities. In traditional medicine systems throughout Asia, the Middle East, and Europe, cinnamon has been used primarily as a warming digestive stimulant, circulatory tonic, and remedy for cold conditions. Modern research has focused on its antioxidant, antimicrobial, and metabolic effects.
**Traditional uses:**
* Used as a warming digestive stimulant.
* Employed to improve circulation and combat coldness.
* Traditionally used for colds, chills, and influenza-like illnesses.
* Used to relieve digestive discomfort and flatulence.
* Included in formulas for weakness and convalescence.
**Historical use:**
* Traded throughout ancient Egypt, Mesopotamia, Greece, and Rome.
* Used in Egyptian embalming and religious ceremonies.
* One of the most valuable commodities in the medieval spice trade.
* Featured prominently in Ayurvedic, Traditional Chinese, Arabic, and European medicine.
* Played a significant role in global exploration and colonial trade routes.
**Parts used and method of use:**
* Inner bark
* Bark essential oil (used cautiously)
Used as:
* Powdered spice.
* Infusion or tea.
* Tincture or liquid extract.
* Culinary seasoning and medicinal food.
**Use in healing (modern herbal practice):**
* Supportive digestive tonic.
* Mild antimicrobial and antiseptic herb.
* Investigated for blood glucose regulation.
* Warming circulatory stimulant.
* Source of antioxidant compounds.
**Pharmacology and biochemistry:**
* **Cinnamaldehyde** — principal aromatic constituent.
* **Eugenol** — particularly abundant in Ceylon cinnamon.
* **Procyanidins and polyphenols** — antioxidant compounds.
**Mechanisms:**
* Cinnamaldehyde contributes antimicrobial, circulatory, and digestive effects.
* Polyphenols may influence insulin signaling and glucose metabolism.
* Antioxidant compounds help reduce oxidative stress and inflammatory activity.
**Overall profile:**
Cinnamon is both a culinary spice and medicinal herb with a long history of use as a warming digestive remedy. Modern research supports antioxidant, antimicrobial, and potential metabolic benefits, although clinical results vary. Its excellent palatability and broad safety profile have made it one of the world's most widely used medicinal foods.
**Common dosage:**
* **Powdered bark:** 1–4 g daily.
* **Infusion:** 1–2 cinnamon sticks or 1–2 teaspoons powdered bark per cup of hot water.
* **Tincture (1:5):** 2–4 mL, up to 3 times daily.
* **Culinary use:** As desired in foods and beverages.
**Safety factors (including side effects):**
* Generally recognized as safe when consumed as food.
* Large amounts may cause stomach irritation or heartburn.
* Cassia cinnamon contains coumarin, which may contribute to liver toxicity when consumed excessively over long periods.
* Allergic reactions and contact dermatitis may occur in sensitive individuals.
* Cinnamon essential oil is highly concentrated and may irritate skin and mucous membranes if improperly used.
**First aid / adverse reaction response:**
* **Mild stomach irritation:** Reduce dosage or discontinue use temporarily.
* **Mouth or skin irritation:** Rinse thoroughly and discontinue exposure.
* **Allergic reaction:** Stop use and seek medical advice if symptoms persist.
* **Severe allergic reaction (difficulty breathing, facial swelling, widespread rash):** Seek emergency medical attention immediately.
**Drug interactions:**
* Theoretical additive effects with antidiabetic medications.
* Cassia cinnamon may theoretically increase bleeding risk when combined with anticoagulant medications due to coumarin content.
* Theoretical additive effects with antihypertensive medications.
* General caution is advised when using concentrated extracts alongside prescription medications.
**Horticultural requirements:**
* USDA / Canadian zone: Zones 10–12.
* Soil pH: Approximately 5.5–7.0.
* Light requirements: Full sun to partial shade.
* Moisture: High; prefers warm, humid conditions and well-distributed rainfall.
* Other notes (growth habit, harvest timing, etc.):
* **Growth habit:** Evergreen tropical tree reaching 10–20 m in height, though often maintained smaller in cultivation.
* **Flowering/fruiting:** Produces small yellow-white flowers followed by dark berry-like fruits.
* **Harvest timing:** Bark is harvested from young branches and shoots after several years of growth.
* **Habitat:** Tropical forests of Sri Lanka, India, Southeast Asia, and cultivated plantations worldwide.
* **Propagation/cultivation notes:** Usually propagated by seed or cuttings. Harvested bark is carefully peeled, dried, and rolled into characteristic cinnamon quills.
**Sampling of clinical reports / studies:**
* **Clinical study or report:** Human studies have investigated cinnamon's effects on blood glucose control, insulin sensitivity, lipid profiles, and cardiovascular risk factors, with mixed but generally promising results.
* **Pharmacological study:** Experimental studies demonstrate antimicrobial, antioxidant, anti-inflammatory, glucose-modulating, and cardiovascular-supportive activities.
* **Phytochemical study:** Research has identified cinnamaldehyde, eugenol, cinnamic acid, coumarins, tannins, procyanidins, and numerous volatile oils.
* **Ethnobotanical evidence:** Ayurvedic, Traditional Chinese, Middle Eastern, African, and European medical traditions consistently describe cinnamon as a warming digestive and circulatory tonic.
* **Overall assessment of evidence:** Cinnamon possesses one of the strongest evidence bases among culinary spices. Traditional use as a warming digestive aid is well supported, while research on blood glucose regulation continues to evolve. Ceylon cinnamon is generally preferred for long-term medicinal use because of its lower coumarin content. Cinnamon remains one of the best examples of a medicinal food whose culinary and therapeutic roles overlap extensively.
Educational Use Only: The information presented on this page is provided for educational, historical, and informational purposes only. ArdNemeton na Tuatha and Bhùth Draoi do not provide medical advice. Always consult your physician and pharmacist before using any herb, mushroom, supplement, or botanical product for medicinal purposes. Traditional uses described herein do not constitute medical claims.