It’s promising in adults with type 2 diabetes and women with PCOS but further research and more consistent evidence is needed to provide a definite recommendation on the specific type, dosage, duration, and safety of its use. The studied dose for blood sugar lowering purposes is 1-2g cinnamon supplement daily (approx. 0.5-1 tsp ground cinnamon) for up to 4 months, taken with carbohydrate containing meals. Choose ceylon cinnamon supplements vs. cassia cinnamon.