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Chinese cinnamon
The cinnamon on file is cassia. It has no authorised EU health claim, and it carries coumarin, which EFSA caps with a tolerable daily intake and our file links to possible liver harm at high doses. It is in one formula, still in development, and the species in that formula is flagged to be confirmed before it goes out. Most of this page is about that question.
WHAT WE ARE ALLOWED TO SAY
Nothing. There is no authorised claim.
Regulation (EU) 432/2012 lists no authorised health claim for cinnamon, so there is no wording for us to quote. Like most botanicals, it is not on the register: most botanical claims have waited on the European Commission's on-hold list since 2010 for an EFSA assessment. Until something is authorised, we claim no health benefit for it, and you will not find one on this page.Regulation (EU) 432/2012 lists no authorised health claim for cinnamon, so there is nothing for us to quote and we claim no health benefit for it.
You will read that cinnamon lowers blood sugar or improves insulin sensitivity. There is no authorised claim for either. Our file describes how it is thought to act, through cinnamaldehyde and type A procyanidins, on insulin signalling and on the gut enzymes alpha-amylase and alpha-glucosidase, but it does so without a study attached yet, and a mechanism is not a claim. In Glucose & metabolism, the blood glucose claim comes from the chromium next to it, not from the cinnamon.
WHICH CINNAMON
Two cinnamons. Very different amounts of coumarin.
Cinnamon is a bark, so the choice is not between salts but between species. The ingredient on file is Cinnamomum cassia, Chinese cinnamon. The other one in our file is Ceylon cinnamon, Cinnamomum verum. They are not interchangeable: cassia carries far more coumarin, and our own label warnings say to prefer Ceylon.
Cinnamomum cassia, also sold as cassia bark or Chinese cassia. It contains 3,000–7,000 mg of coumarin per kg, which is why our file puts a safe amount for an adult at roughly 1–2 g of cassia a day.
Cinnamomum verum. Under 500 mg of coumarin per kg, and our file records no equivalent restriction for it.
The cinnamon in Glucose & metabolism carries a flag in our file: check the coumarin, Ceylon not cassia. Until that is confirmed, we will not tell you which species you would get.
There is no authorised claim for any cinnamon, cassia or Ceylon, so the species is not a claim argument and we do not use it as one. It is a safety decision, about coumarin, and it is still open. Our cinnamon file is marked as minimal, with deeper research still pending, and we would rather show you that than round it off.There is no authorised claim for any cinnamon, so the species is a safety decision, about coumarin, and it is still open. Our file is marked as minimal, with deeper research pending.
WHERE IT APPEARS
One of the twenty-nine carries cinnamon.
It appears only in Glucose & metabolism, the ADAPT formula for when a blood test puts your fasting glucose or HbA1c in the range our file calls prediabetes, next to chromium, alpha-lipoic acid, vitamin B1 and magnesium. It is taken before breakfast. The formula runs for 12 weeks and ends with a new HbA1c and fasting glucose test. It is still in development and has its own exclusions, listed on its page.
THE CEILING
No limit for cinnamon. A limit for its coumarin.
Our file records no EFSA upper intake level for cinnamon itself, and there is no NRV. What EFSA has set is a tolerable daily intake for coumarin: 0.1 mg per kg of body weight a day, about 6 mg for a 60 kg adult. Our file turns that into roughly 1–2 g of cassia a day. Glucose & metabolism carries 1,000 mg, and it is the only formula with cinnamon, so 1,000 mg is also your total from us. The number that really matters, the coumarin in the batch, depends on the species, and that is still being confirmed.EFSA has set no upper limit for cinnamon, but it caps coumarin at 0.1 mg per kg of body weight a day. Our file turns that into roughly 1–2 g of cassia a day. We use 1,000 mg, from one formula.
Cinnamon is in no other VION formula, so nothing else in your plan adds to it. The engine has no rule written for cinnamon yet: today, what keeps your total at 1,000 mg is that only one formula carries it.
Which species goes into the formula and how much coumarin that batch carries. How cinnamon is cleared, its half-life and how much of it you absorb are not documented yet either. Our file records an onset of 4 to 8 weeks, with no study attached, and no contraindication of its own, which means unchecked, not proven absent.
If you are on treatment for diabetes, talk to a healthcare professional first: the risk of low blood sugar may add up, so your glucose needs monitoring. Cassia carries coumarin, which can harm the liver at high doses. Do not go over the recommended daily dose, keep it out of reach of young children, and do not use it in place of a varied, balanced diet. It contains none of the allergens the EU requires on a label. The formula that carries it is also ruled out if you have type 1 diabetes, if you are pregnant or if you have liver disease.
WHAT IT REACTS WITH
Documented pairs, not hunches. None yet for cinnamon.
Chinese cinnamon is one of the 140 ingredients in our library, so it has 139 possible partners. We have not documented any of them yet, out of the 443 pairs on file. That includes the four ingredients it shares Glucose & metabolism with.
No pair with cinnamon is in our interaction table, so the engine has nothing to separate or halve for it. That is an empty row, not a clean result.
Chromium, alpha-lipoic acid, vitamin B1 and magnesium are served with it in the same morning dose. None of those pairs has been checked yet either.
No drug interaction for cinnamon is in our drug table. Its label warnings still name diabetes treatment, for the risk of low blood sugar. Our file also lists it as a modulator of two liver enzymes that handle many medicines, CYP3A4 and CYP2E1, so tell your doctor about anything you take regularly.
None of cinnamon's pairs, with other ingredients or with medication, is in our tables yet. Across the library, 443 of the 9,730 possible pairs are documented, which is 4.55%. The rest are not "safe", they are simply unchecked, and we would rather write that down than let the number look like a badge.443 of the 9,730 possible pairs in our library are documented, which is 4.55%, and none involves cinnamon. The rest are not safe, they are simply unchecked.
SOURCES
Everything on this page, with its reference.
Reviewed by VION nutrition team · last reviewed 16 September 2026
140 INGREDIENTS · 64 IN USE TODAY
Every one of them has a page like this.
What it is, what we are allowed to say about it, which formulas carry it, what it reacts with and where each of those statements comes from. No proprietary blends, no hidden amounts.