Cinnamon Supplement Review

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  Evaluated for:
Effectiveness Rating Effectiveness Rating
Type II diabetes
+2 (Moderate Evidence)
High Blood Pressure
+2 (Moderate Evidence)
High Cholesterol
+2 (Moderate Evidence)
Polycystic ovarian syndrome (PCOS)
+2 (Moderate Evidence)


  • Cinnamon comes from the bark of a southeast Asian evergreen tree. One teaspoon contains over a gram of fiber, plus iron, manganese, and vitamins C and K.
  • Cinnamon, at a dose of 3 g per day, decreased blood glucose levels in type 2 diabetics.
  • In one study, cinnamon decreased Hba1c and lowered blood pressure at a dose of 2 grams per day.
  • Cinnamon lowered LDL cholesterol at ½ tsp per day.
  • Another small study showed that cinnamon improved blood sugars in patients with polycystic ovarian disease (PCOS).
  • Cinnamon may improve appetite and relieve indigestion.
  • Side effects are rare when it is used as a food additive at normal doses.


  • High doses of cinnamon may depress the central nervous system.
  • No studies have clearly shown the effectiveness of cinnamon for type 1 diabetics, or for lowering blood sugar or lipids.

Patients with liver disease should not take cinnamon. Those already on medication that lowers blood sugar or that can be toxic to the liver should use extreme caution when taking cinnamon.

DOSAGE:Add 1 to 4 grams of cinnamon per day (1/4 to 1 teaspoon per day) to food.

CONCLUSION:We conclude that cinnamon is a safe and effective product for those with type 2 diabetes, for lowering blood pressure, and for polycystic ovarian disease.

“Cinnamon.” Natural Standard –The Authority on Integrative Medicine. Natural Standard, 2013.
“Cassia Cinnamon.” Natural Medicines Comprehensive Database. Therapeutic Research Faculty, 2013. 8 November 2013.
Wondrak, G.T. et al. The Cinnamon-derived Dietary Factor Cinnamic Aldehyde Activates the Nrf2-dependent Antioxidant Response in Human Epithelial Colon Cells. Molecules 2010 15(5) 3338-3355
Kwon, H. et al. Cinnamon extract induces tumor cell death through inhibition of NFKB and AP1. BMC Cancer (2010) 10:392
Roussel, A. et al. Antioxidant Effects of a Cinnamon Extract in People with Impaired Fasting Glucose That Are Overweight or Obese. Journal of the American College of Nutrition (2009) 28, 16-21
Qin, B. et al. Cinnamon: Potential Role in the Prevention of Insulin Resistance, Metabolic Syndrome, and Type 2 Diabetes. Journal of Diabetes Science and Technology (2010) 4, 685-693

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