What can you say about coenzyme Q10 in your ads and on your site?

The library supports 2 wordings for coenzyme Q10; the strongest is “Helps maintain cardiovascular health” (moderate, 30-300 mg a day). Avoid wording that names or implies a disease, a drug or a treatment, such as “Treats heart failure or heart disease”.

Also called: CoQ10, Ubiquinone, Ubiquinone-10, Ubidecarenone

Reviewed 15 October 2026

Not legal advice. This guide shows the wording that published evidence supports at a daily dose, from the sources linked below; it is not a ruling on any claim. Your own product, its form and dose, and your own evidence still need to match the wording you use.

Supported wordings

What you can say.

Moderate evidenceWording 1

Claims Facts

“Helps maintain cardiovascular health.”

Daily dose	30-300 mg a day
Support	Health Canada lists it at 30-300 mg a day (15-300 mg for ubiquinol); no other listed source covers it.
Dose details	Adults 18 and older. Health Canada: 30-300 mg a day of coenzyme Q10. Its ubiquinol monograph gives 15-300 mg a day of ubiquinol for the same use, so a ubiquinol product at 15-30 mg a day shows here as below the range.
Form	Coenzyme Q10 (ubiquinone), or ubiquinol (see details)
Sources	Health Canada monograph: Coenzyme Q10 Health Canada monograph: Ubiquinol

Limited evidenceWording 2

Claims Facts

“Provides an antioxidant that helps protect cells against damage from free radicals.”

Daily dose	up to 300 mg a day
Support	Health Canada sets a maximum dose only; no other listed source covers it.
Dose details	Adults 18 and older; Health Canada sets a maximum of 300 mg a day for coenzyme Q10 and for ubiquinol.
Form	Coenzyme Q10 (ubiquinone) or ubiquinol
Sources	Health Canada monograph: Coenzyme Q10 Health Canada monograph: Ubiquinol

How strong the evidence is

Strong evidence: At least two listed sources support it independently at a comparable dose and form, and none disagrees.
Moderate evidence: One listed source supports it as an evidence-based use at that dose, and no listed source disagrees.
Limited evidence: The only support is traditional use, the sources disagree, or the source itself calls the evidence weak.

Wordings to avoid

What to leave out.

Claims Facts

Ingredient: Coenzyme Q10

Wording to avoid	Reason
“Treats heart failure or heart disease”Names diseases; the supported wording is maintaining cardiovascular health.	Disease
“Lowers blood pressure”Names a disease marker. FDA’s 2000 rule (page 1006) counts a claim that a product promotes low blood pressure as a disease claim.	Disease
“Prevents migraines”Names a disease. Health Canada’s migraine use is a Canada only note.	Disease
“Relieves statin muscle pain”Implies treating a side effect of a drug, a medical condition; no listed source supports it.	Disease

Disease: names or implies a disease. Drug: names a drug or presents the product as one. Treatment: promises to treat, cure or prevent a condition.

Sources

Where this comes from.

All ingredient guides

Check the claims on your own site. Free.

Vera, Merchient’s AI employee, reads your site and emails you the riskiest line, why, a safer rewrite and how many more like it she found. Reply, and you get the free first report.

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