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Ceylon Cinnamon

Blood sugar · antioxidant

Moderate evidenceVegan116 studies on PubMedRead the research
Written to our editorial standards · reviewed against published research· Updated 30 May 2026
Last reviewed: May 30, 2026

Ceylon Cinnamon: Blood sugar · antioxidant. Ceylon cinnamon supports healthy post-meal blood sugar without the coumarin liver risk of cheaper cassia. Standard dose 500-1,000 mg, taken in the morning, about $11/month. Evidence rating: moderate evidence.

Where to buy

Organic India Ceylon Cinnamon, 325 mg
Recommended
NOW Foods, Ceylon Cinnamon
500-1,000 mg · Morning · ~$11/month

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All product options

Organic India Ceylon Cinnamon, 325 mgBestseller
Ceylon Cinnamon, 325 mg
Organic India
90 veg capsules · $14 · ★ 4.7
Buy on iHerb →
NOW Foods Ceylon CinnamonBestseller
Ceylon Cinnamon
NOW Foods
120 veg caps · $11 · ★ 4.8
Buy on iHerb →
Nutricost Ceylon CinnamonBest Value
Ceylon Cinnamon
Nutricost
240 capsules · $16 · ★ 4.7
Buy on iHerb →
Double Wood Ceylon CinnamonPremium
Ceylon Cinnamon
Double Wood
240 capsules · $18 · ★ 4.6
Buy on iHerb →
Nature's Way Cinnamon BarkPremium
Cinnamon Bark
Nature's Way
100 veg caps · $12 · ★ 4.6
Buy on iHerb →

What is Ceylon Cinnamon?

Cinnamon's bioactive polyphenols can improve insulin sensitivity and modestly lower fasting and post-meal blood sugar, making it a popular metabolic support. The crucial distinction is the type: most grocery cinnamon is cassia, which is high in coumarin, a compound that can stress the liver at high daily intakes. Ceylon, or true, cinnamon contains only trace coumarin and is the safer choice for daily supplementation. Doses of 0.5 to 1 g of Ceylon cinnamon, or a standardized water-soluble extract, are typical, and it pairs naturally with carbohydrate-containing meals.

Ceylon cinnamon supports healthy post-meal blood sugar without the coumarin liver risk of cheaper cassia.

Natural food sources

Where possible, get Ceylon Cinnamon from whole foods first. Common dietary sources include:

Ceylon cinnamon barkCinnamon powder

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Common questions

What is Ceylon Cinnamon?
Cinnamon's bioactive polyphenols can improve insulin sensitivity and modestly lower fasting and post-meal blood sugar, making it a popular metabolic support. The crucial distinction is the type: most grocery cinnamon is cassia, which is high in coumarin, a compound that can stress the liver at high daily intakes. Ceylon, or true, cinnamon contains only trace coumarin and is the safer choice for daily supplementation. Doses of 0.5 to 1 g of Ceylon cinnamon, or a standardized water-soluble extract, are typical, and it pairs naturally with carbohydrate-containing meals.
What is Ceylon Cinnamon used for?
Blood sugar · antioxidant. Ceylon cinnamon supports healthy post-meal blood sugar without the coumarin liver risk of cheaper cassia.
What is the standard dose of Ceylon Cinnamon?
500-1,000 mg, typically taken in the morning. Approximate cost is $11 per month.
How strong is the evidence for Ceylon Cinnamon?
Moderate evidence for its primary uses. See the full study list on the research page.

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