Cinnamomum aromaticum
·
Lauraceae
·
Sri Lanka, India

Cinnamon

Cassia

Useful parts

Bark, Leaves, Roots

Key actions

Antimicrobial, Anti-inflammatory, Digestive aid, Antispasmodic, Antibacterial, Antifungal, Antiviral, Anti-nausea, Anti-diarrheal, Mimics insulin

Active compounds

Terpenoids, Phenolics (tannin, coumarin, eugenol)

This Site is for Educational Use Only: The information on this page is for educational and informational purposes only and is not intended as medical advice, diagnosis, or treatment. I am not a licensed medical professional. Always consult a qualified healthcare provider before using any medicinal plants, especially if you are pregnant, nursing, taking medications, or have a medical condition.

Possible Proposed Uses

  • Cold, flu, bronchitis
  • Digestive issues
  • Menstrual regulation
  • Infertility
  • Uterine bleeding
  • Reduce blood glucose
  • Circulation support

Mechanism of Action

  • Inhibits nitric oxide production
  • Stimulates blood flow
  • Activates insulin receptors

Possible Side Effects

  • Rare at food doses
  • High doses: CNS depression
  • Allergic reactions
  • Liver toxicity (coumarin)

Possible Drug Interactions

  • Statins
  • Antibiotics
  • Diabetes drugs
  • Blood thinners
  • Heart medications

Abigail's notes

Cinnamon comes from the inner bark of the tree, which is one of those origin facts that sounds obvious once you know it. We have been peeling and drying tree bark and putting it in our oatmeal and I think that's beautiful.

I am a cinnamon girl. Cinnamon with apples specifically is one of life's great simple pleasures and I will not be elaborating further because some things just are what they are.

Beyond being one of the most beloved spices on the planet, cinnamon is aromatic, astringent, a mild stimulant, and antimicrobial. It stimulates circulation and over time can strengthen blood flow to the hands and feet, making it genuinely useful for people dealing with poor peripheral circulation. If your hands and feet are always cold, cinnamon is worth adding to your regular routine.

It also shows significant results in reducing fasting blood glucose levels for people with diabetes, which makes it one of the more clinically interesting entries in this database for metabolic health. It protects tissue against oxidative damage, can regulate genes in the small intestine making it helpful for digestive issues, and positively affects the gut microbiota overall. It also supports IgA antibody levels in mucosal secretions, which circles back to that point we keep making throughout this database: some mucous is good and the body needs it functioning properly.

Safety note: Cinnamon rarely causes allergic reactions unless you have a specific allergy to it. Otherwise it's one of the safest entries in this database, which is very convenient given that it's also just a delicious food you're probably already eating.

Last updated on:
May 20, 2026

Deeper research options for you (because I would never ask you to just take my word for it)

Medicinal properties of ‘true’ cinnamon (Cinnamomum zeylanicum): a systematic review https://pmc.ncbi.nlm.nih.gov/articles/PMC3854496/

Cinnamon https://www.nccih.nih.gov/health/cinnamon

A Review on Medicinal Uses of Cinnamomum verum (Cinnamon) https://jddtonline.info/index.php/jddt/article/view/5145/4314

Cinnamon: A Multifaceted Medicinal Plant https://pmc.ncbi.nlm.nih.gov/articles/PMC4003790/

Immunity Boosting Foods by Donna Beydoun Mazzola, PhD

Herbal Remedies by Andrew Chevallier

Disclaimer: The content on this website is provided for informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. No provider-patient relationship is created by use of this site. The author makes no representations regarding the accuracy or completeness of the information and assumes no liability for any adverse effects resulting from the use of plants or remedies described herein.

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