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Cassia Cinnamon and Coumarin: What a Capsule Label Can and Cannot Tell You
Cassia cinnamon contains coumarin, a compound that can bother the liver in sensitive people at high intakes. The Reviralis label prints "cinnamon bark extract" without naming the species or an amount. Its place in the blend order caps it at 50.85 mg a serving. The real amount is not printed, and no source tested this capsule.
Written by the Goreviralis label deskUpdated · 5 min read
What is coumarin in cassia cinnamon?
Coumarin is a natural compound found in cassia cinnamon, the common, inexpensive kind sold in most grocery stores. At high intakes it is a concern for the liver in people who are sensitive to it.
The National Center for Complementary and Integrative Health says cassia contains coumarin and that research does not clearly support cinnamon for any health condition (NCCIH, Cinnamon). Both facts matter when you hold a bottle. A pinch on oatmeal is one thing. A concentrated bark extract in a capsule, taken every day, is another.
- Cassia is the usual cinnamon in supermarkets and in many extracts.
- It contains coumarin; the other common kind, Ceylon, is generally described as holding far less.
- Coumarin matters most for people with liver problems, heavy daily use or medicines that stress the liver.
What does the Reviralis label say about cinnamon?
The label lists "cinnamon bark extract" as the 13th of 18 names in a 661 mg proprietary blend. It does not say cassia or Ceylon, and it prints no amount.
US rules list blend members from most to least by weight (21 CFR 101.36). With 661 mg shared by 18 names, the 13th can hold at most 661 divided by 13, which is 50.85 mg per serving of two capsules. It could hold much less. The label does not say.
| Printed name | Cinnamon bark extract |
|---|---|
| Position in the blend | 13th of 18 |
| Printed amount | Not printed |
| Ceiling per serving (2 capsules) | At most 50.85 mg |
| Species (cassia or Ceylon) | Not printed |
| Coumarin content | Not printed |
A ceiling is arithmetic about the label order, not a claim about what is inside. See the full blend math for all 18 names.
Is there a daily limit for coumarin?
Health agencies in some countries do set a daily intake guide for coumarin, but the sources cited on this site do not give a number, so none is quoted here. Ask a pharmacist for the current figure for your body weight.
What can be said from the cited source: cassia has coumarin, and the species of the label's extract is unknown (NCCIH, Cinnamon). That means nobody reading the bottle can work out a coumarin intake. A limit is only useful when you know the amount, and here both the amount and the species are missing.
"This capsule lists cinnamon bark extract without naming the species. Given my liver, my medicines and my other supplements, is that a problem for me?" Bring the bottle or a photo of the label.
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See packsWho should be careful with cassia and liver health?
Anyone with a liver condition, anyone who drinks alcohol heavily and anyone taking medicine that is processed by the liver should check with a clinician before using a cinnamon extract.
The same blend also names green tea leaf extract, which NCCIH links to liver injury in some supplement users (NCCIH, Green Tea). Two liver-relevant names in one product is a reason to ask, not a reason to panic. Neither source tested Reviralis itself.
The label's own caution asks you to consult your healthcare provider before use if you are pregnant or nursing, have a medical condition, have a history of seizures, or take prescription medicine. Under 18 is not advised. If you take a prescribed antiviral for herpes or any other medicine, keep taking it as directed and tell your prescriber about every supplement.
What should you do before buying a capsule with cinnamon?
Read the cinnamon line, note what is missing, and decide whether the missing facts matter for your health. A short checklist helps.
- Is the species named? Here it is not.
- Is the amount printed? Here it is not; the ceiling is 50.85 mg.
- Do you have liver trouble or take medicine that the liver clears?
- Has a pharmacist seen the full label?
Stop and get care for yellow skin or eyes, dark urine, or pain under the right ribs, and call 911 for trouble breathing, swelling of the face or throat, or a seizure. To compare the two cinnamon types, read cassia versus Ceylon. For another blend name with a safety note, see licorice root extract.
See the ingredients page for all 40 names. No source tests Reviralis.
FAQ01
Reviralis questions people ask
Is cassia cinnamon bad for the liver?
Not for everyone, but it carries a caution. Cassia contains coumarin, which can bother the liver at high intakes in sensitive people. NCCIH notes this. Small food amounts differ from daily concentrated extracts, so people with liver conditions should ask a clinician first.
Does Reviralis use cassia or Ceylon cinnamon?
The label does not say. It prints only "cinnamon bark extract," 13th in a 661 mg blend, with no species and no amount. You can ask the seller through the order desk, but the answer should come in writing before you rely on it.
How much cinnamon is in Reviralis?
The amount is not printed. Because blend members are listed by weight, the 13th name can hold at most 50.85 mg per two-capsule serving. It may hold less. That is arithmetic about the label, not a measured result.
Does cinnamon extract lower blood sugar?
Results are mixed. NCCIH says research does not clearly support cinnamon for any condition, blood sugar included. If you take diabetes medicine, ask your prescriber before adding any cinnamon extract.
Can I take cinnamon capsules with medicine?
Ask first. The label asks people on prescription medicine to consult a provider before use. A pharmacist can check your list against every name on the bottle in a few minutes.
Who wrote this02
Written and reviewed by
Pages built from the label, the sales page and linked NIH, CDC, FDA, FTC, Mayo Clinic and peer-reviewed sources.
Last updated . Read our editorial standards and how we check reviews. This website is the information site for a U.S. stocking partner for Reviralis. It is not the manufacturer or the distributor named on the label. We earn money when you buy through our order links.
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