Cinnamon
With meals
Cinnamon is a widely used spice obtained from the inner bark of trees in the Cinnamomum genus. Ceylon cinnamon ("true cinnamon") and Cassia cinnamon are the two main varieties, with Ceylon generally preferred for supplementation due to its lower coumarin content. It has a long history in traditional medicine and has attracted modern research interest for its potential effects on blood sugar regulation and metabolic health.
Research Evidence
May modestly lower LDL cholesterol and triglycerides
LimitedMay improve insulin sensitivity
ModerateProvides antioxidant and anti-inflammatory activity
ModerateMay reduce HbA1c in individuals with elevated blood sugar
LimitedMay reduce fasting blood glucose levels
ModerateExpert Evidence
3 references from 1 expert
2022
2021
Safety & Cautions
Side Effects
- Potential liver stress from high coumarin intake (Cassia varieties)
- Mouth or throat irritation from concentrated amounts
- Possible allergic reactions in sensitive individuals
- Digestive discomfort at high doses
Cinnamon is generally well-tolerated at culinary and moderate supplemental doses. However, daily intake should stay below roughly one teaspoon of Cassia cinnamon due to its coumarin content, which can be hepatotoxic at high levels — choosing Ceylon cinnamon largely avoids this concern.
Pairs Well With
Price Comparison
From $0.22/ct
N
Nature's WayBest Value
4.7
•100 ct$0.22/ct
$21.98 total