Health Guide


What is it?

Cinnamon is an herbal medicine used for loss of appetite, gas, bloating, and stomach pain. May also be used for type 2 diabetes.

Other names for Cinnamon include: Cassia, Ceylon, and Cinnamomum verum.

Ask your doctor, nurse, or pharmacist if you need more information about this medicine or if any information in this leaflet concerns you.

Before Using:

Tell your doctor if you

  • are taking medicine or are allergic to any medicine (prescription or over-the-counter (OTC) or dietary supplement)
  • are pregnant or plan to become pregnant while using this medicine
  • are breastfeeding
  • have any other health problems, such as high blood pressure or heart or blood vessel disease


Talk with your caregiver about how much Cinnamon you should take. The amount depends on the strength of the medicine and the reason you are taking Cinnamon. If you are using this medicine without instructions from your caregiver, follow the directions on the medicine bottle. Do not take more medicine or take it more often than the directions tell you to.

To store this medicine:

Keep all medicine locked up and away from children. Store medicine away from heat and direct light. Do not store your medicine in the bathroom, near the kitchen sink, or in other damp places. Heat or moisture may cause the medicine to break down and not work the way it should work. Throw away medicine that is out of date or that you do not need. Never share your medicine with others.

Drug and Food Interactions:

Do not take Cinnamon without talking to your doctor first if you are taking:

  • Tetracycline antibiotic medicine (examples: tetracycline, doxycycline)


  • Before taking Cinnamon, tell your doctor if you are pregnant or breastfeeding

Side Effects:

Stop taking your medicine right away and talk to your doctor if you have any of the following side effects. Your medicine may be causing these symptoms which may mean you are allergic to it.

  • Breathing problems or tightness in your throat or chest
  • Chest pain
  • Skin hives, rash, or itchy or swollen skin

Other Side Effects:

This medicine may also cause other side effects. Tell your doctor if you have side effects that you think are caused by this medicine.

  • Skin burns have been reported with Cinnamon oil (5,6)
  • Mouth sores have occurred with Cinnamon chewing gum (7,8,9) and Cinnamon toothpaste (10,11)
  • Increased heart rate (pulse), feeling dizzy, shortness of breath, and redness of the face may occur if you take too much Cinnamon (5,12)


1. Newall CA, Anderson LA & Phillipson JD (eds): Herbal Medicines: A Guide for Health-Care Professionals. The Pharmaceutical Press, London, England; 1996.

2. Blumenthal M, Goldberg A & Brinckmann J (eds): Herbal Medicine, Expanded Commission E Monographs, 1st ed. Integrative Medicine Communications, Newton, MA; 2000.

3. McGuffin M, Hobbs C, Upton R et al (eds): American Herbal Products Association's Botanical Safety Handbook. CRC Press, Boca Raton, FL; 1997.

4. Brinker F: Herb Contraindications and Drug Interactions, 2nd ed. Eclectic Medical Publications, Sandy, OR; 1998.

5. Perry P, Dean B & Krenzelok E: Cinnamon abuse by adolescents. Vet Hum Toxicol 1990; 32(2):162-164.

6. Sparks T: Cinnamon oil burn. West J Med 1985; 146(6):835.

7. Allen C & Blozis G: Oral mucosal reactions to cinnamon-flavored chewing gum. J Am Dent Assoc 1998; 116(6):664-667.

8. Haring J: Case #5. A 39-year-old female consulted her general dentist for evaluation of a red and white lesion located on the inside of her cheek. RDH 1993; 13(5):12-50.

9. Mihail C: Oral leukoplakia caused by cinnamon food allergy. J Otolaryngol 1992; 21(5):366-367.

10. Drake T & Maibach H: Allergic contact dermatitis and stomatitis caused by cinnamic aldehyde-flavored toothpaste. Arch Dermatol 1976; 112(1):202-203.

11. Magnusson B & Wilkinson D: Cinnamic aldehyde in toothpaste. 1. Contact Dermatitis 1975; 1(2):70-76.

12. Schwartz R: Cinnamon oil: Kids use it to get high. Clinical Correspondence. Clin Pediatr 1990; 29(3):196.

13. Khan A, Khattak KN, Safdar M et al: Cinnamon improves glucose and lipids of people with type 2 diabetes. Diabetes Care 2003; 26(12):3215-3218 .

Last Updated: 7/4/2018
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