Guide
How much cinnamon should you take a day?
There's no single cinnamon dose — bark powder and concentrated extract are tested at very different amounts, and cassia's coumarin content sets its own practical ceiling.
There's no single established dose for a cinnamon supplement — it depends heavily on the form. Trials using ground bark powder have tested 1 to 6 grams a day; a trial using a concentrated water-soluble extract used 500 mg a day. A capsule labeled "cinnamon" could be either, and the two aren't comparable milligram for milligram.
Why the form changes the number
Ground bark powder (cassia or Ceylon) is the whole dried bark, milled fine enough to fit in a capsule; getting a meaningful dose usually means several capsules, because a gram of bark takes real volume. A concentrated water-soluble extract removes most of the bulk and concentrates specific compounds, so the effective dose is much smaller in milligram terms — one trial used 250 mg of an aqueous extract twice a day. Neither form is "more real" cinnamon; they're processed differently, and a label should say which one is inside and how much.
The coumarin ceiling, if the label says cassia
Cassia cinnamon's coumarin content sets a practical ceiling that has nothing to do with any claimed effect. The European Food Safety Authority's tolerable daily intake for coumarin is 0.1 mg per kilogram of body weight a day — about 7 mg for a 70 kg adult, scaled down or up for a different body weight. A 2012 analysis of 60 retail cinnamon samples found cassia cinnamon averaging 2,650 to 7,017 mg of coumarin per kilogram of bark. Doing the math on that range: a 70 kg adult would reach the tolerable daily intake somewhere between about 1 and 2.6 grams of cassia bark a day, depending on the specific product — well within what a multi-capsule bark serving can deliver. Ceylon cinnamon's coumarin content is low enough that the same math doesn't produce a practical daily ceiling at ordinary intakes; the same 2012 analysis found a Ceylon sample with none detected.
| Cassia coumarin level tested | Grams of bark to reach the 7 mg TDI |
|---|---|
| 7,017 mg/kg (higher end measured) | ~1.0 g |
| 2,650 mg/kg (lower end measured) | ~2.6 g |
What the trials didn't test
None of the dose ranges above come from a trial run on a product like ours — we don't sell a cinnamon supplement, so there's no label here to compare a trial dose against. If you're taking a specific product, the number that matters is what's printed on that label, not a number pulled from a study using a different form or species.
Questions people ask
How much cinnamon supplement should I take a day?
It depends on the form. Bark-powder trials have used 1 to 6 grams a day; an extract trial used 500 mg a day of a concentrated water-soluble form. Follow the label on the specific product in front of you rather than a number from a different form.
How much cinnamon supplement is too much?
For cassia cinnamon specifically, the practical ceiling is about coumarin, not the spice itself — roughly 1 to 2.6 grams a day for a 70 kg adult before crossing Europe's tolerable daily intake, based on measured coumarin levels in retail cassia. Ceylon cinnamon's coumarin content is low enough that this isn't a practical concern at ordinary supplement doses.
Is a cinnamon supplement safe to take daily?
See cinnamon side effects for what's actually documented, and who should not take cinnamon if you take medication or have a liver condition.
How much ceylon cinnamon supplement per day?
There's no dose specific to Ceylon cinnamon established in human trials; most of the dosing research used cassia. Ceylon's main practical advantage is its much lower coumarin content, not a different tested dose.
Related reading: when to take cinnamon, how to choose a good cinnamon, and cinnamon side effects.
Sources
- Assessment of coumarin levels in ground cinnamon available in the Czech retail market Retail cassia cinnamon samples averaged 2,650-7,017 mg of coumarin per kilogram; a Ceylon cinnamon sample tested had none.
- Antioxidant effects of a cinnamon extract in people with impaired fasting glucose that are overweight or obese A 12-week trial found a water-soluble cinnamon extract (500 mg/day) improved antioxidant markers in adults with impaired fasting glucose who were overweight or obese.
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.