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

The library supports 4 wordings for potassium; the strongest is “A source of electrolytes” (moderate, 100-200 mg a day). Avoid wording that names or implies a disease, a drug or a treatment, such as “Lowers blood pressure, or treats hypertension”, and keep “Helps maintain normal blood pressure” off Meta ads.

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

“A source of electrolytes.”

Daily dose	100-200 mg a day
Support	Health Canada lists it at 100-200 mg a day; no other listed source covers this wording.
Dose details	Adults 18 and older. Health Canada: at least 100 mg a day is needed for this use, below 100 mg only general wording applies, and the maximum is 200 mg a day. ODS: most US potassium supplements give at most 99 mg.
Form	Potassium from a salt on Health Canada’s list (such as citrate, chloride or gluconate), counted as potassium
Source	Health Canada monograph: Multi-Vitamin/Mineral Supplements

Moderate evidenceWording 2

Claims Facts

“Supports normal muscle function.”

Daily dose	at least 300 mg a day
Support	Authorized in the EU after EFSA review; Health Canada does not list it.
Dose details	EU: at least 300 mg, 15% of the 2,000 mg EU reference value (Regulation (EU) No 1169/2011, Annex XIII). Health Canada’s multi-vitamin/mineral monograph allows at most 200 mg a day, below this threshold. ODS: no upper limit was set.
Form	Potassium from a salt on Health Canada’s list (such as citrate, chloride or gluconate), counted as potassium
Source	Commission Regulation (EU) No 432/2012, list of permitted health claims

Moderate evidenceWording 3

Claims Facts

“Supports normal function of the nervous system.”

Daily dose	at least 300 mg a day
Support	Authorized in the EU after EFSA review; Health Canada does not list it.
Dose details	EU: at least 300 mg, 15% of the 2,000 mg EU reference value (Regulation (EU) No 1169/2011, Annex XIII). Health Canada’s multi-vitamin/mineral monograph allows at most 200 mg a day, below this threshold. ODS: no upper limit was set.
Form	Potassium from a salt on Health Canada’s list (such as citrate, chloride or gluconate), counted as potassium
Source	Commission Regulation (EU) No 432/2012, list of permitted health claims

Moderate evidenceNot in Meta adsWording 4

Claims Facts

“Helps maintain normal blood pressure.”

Daily dose	at least 300 mg a day
Support	Authorized in the EU after EFSA review; Health Canada does not list it.
Dose details	EU: at least 300 mg, 15% of the 2,000 mg EU reference value (Regulation (EU) No 1169/2011, Annex XIII). Health Canada does not list this use; its multi-vitamin/mineral monograph allows at most 200 mg a day. ODS: no upper limit was set.
Form	Potassium from a salt on Health Canada’s list (such as citrate, chloride or gluconate), counted as potassium
Meta ads	Wording to avoid in Meta ads. On your site it is supported wording.
Source	Commission Regulation (EU) No 432/2012, list of permitted health claims

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: Potassium

Wording to avoid	Reason
“Lowers blood pressure, or treats hypertension”Names a disease. FDA’s 2000 rule (page 1006) counts a claim that a product promotes low blood pressure as a disease claim.	Disease
“Reduces the risk of stroke or heart disease”Names diseases.	Disease
“Treats hypokalemia”Names a medical condition. ODS says abnormal blood potassium levels are rare in healthy people with normal kidney function.	Disease
“Helps maintain normal blood pressure.” Meta ads onlyBlood pressure is a health-condition claim on Meta, so this wording stays off Meta ads (library decision of 2026-10-15; Meta’s ad policies were not read). It is supported wording for pages.	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. Meta ads only: keep it out of Meta ads; on your own site it is supported wording.

Sources

Where this comes from.

All ingredient guides

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