Are Supplements Legal in Canada? NPNs & Natural Product Numbers Explained

If you've ever wondered whether a supplement is actually legal — or trustworthy — to buy in Canada, the answer usually comes down to one thing on the label: the Natural Product Number (NPN). This guide explains what that number means, how Canada's system differs from the United States, and how to check any product yourself.

How supplements are regulated in Canada

In Canada, most vitamins, minerals, herbal products, probiotics, amino acids and similar products are classed as Natural Health Products (NHPs) and are overseen by Health Canada under the Natural Health Products Regulations. Before a product can be sold, the company must apply for a product licence. If Health Canada is satisfied with the evidence for safety, quality and the claims being made, it issues an NPN (or a DIN-HM for homeopathic medicines).

That number is your shortcut. It tells you the specific formula on the shelf has been reviewed and licensed — not just the brand in general.

NPN (Canada) vs FDA (United States): the key difference

Canadians often see US marketing that says a supplement is "FDA approved" or carries an "FDA disclaimer." The two systems work quite differently:

This is why a Canadian NPN is a genuinely useful signal: it reflects a review that happened before the product reached you.

Where to find the NPN on a product

Look on the label — typically near the bottom of the information panel — for "NPN" followed by 8 digits (for example, NPN 80012345). Homeopathic products use "DIN-HM" instead. If you can't find either on a product being sold as a supplement in Canada, treat that as a flag.

How to verify any supplement in 30 seconds

1. Find the NPN on the label (or note the exact product name).
2. Open Health Canada's Licensed Natural Health Products Database (LNHPD) — it's free and public.
3. Search by NPN or product name.
4. Confirm the licence holder, the medicinal ingredients and the permitted use match the product in your hand.

Every licensed product we describe at CanadianVit is a natural health product intended for the Canadian market; checking the NPN yourself is always the final word.

What an NPN does — and doesn't — tell you

It does tell you the formula has been reviewed and licensed for sale, that the listed medicinal ingredients and doses were assessed, and that any on-label claims were permitted. It doesn't promise a specific health result for you personally, and it isn't a substitute for advice from your own healthcare practitioner.

Shop related collections

• Vitamins
• Minerals
• Probiotics
• Herbal Supplements

More Canadian supplement references

• Supplement Dosage Limits in Canada
• Vitamin & Mineral RDA + Upper Limit Chart
• How to Read a Supplement Label in Canada

Frequently asked questions

What is an NPN (Natural Product Number)?

An NPN is an 8-digit number Health Canada assigns to a natural health product (NHP) — vitamins, minerals, herbals, probiotics and similar — once it has been reviewed and licensed for sale in Canada. You'll find it on the label, usually near the bottom, written as 'NPN' followed by 8 digits.

Does an NPN mean a supplement is approved like a drug?

Not in the same way as a prescription drug. An NPN means Health Canada has reviewed the product's ingredients, dose, claims and safety information under the Natural Health Products Regulations and licensed it for sale. It is a licensing and quality signal, not a guarantee of any health outcome.

How do I check if a supplement is licensed in Canada?

Search Health Canada's free Licensed Natural Health Products Database (LNHPD). Enter the NPN or the product name and you can see the licence holder, medicinal ingredients and permitted uses. If a product sold in Canada has no NPN or DIN-HM, it has not been licensed for sale here.

Is it legal to buy supplements without an NPN in Canada?

Natural health products legally sold in Canada are required to carry an NPN or DIN-HM. Products without one have not been assessed by Health Canada. CanadianVit focuses on products that carry Canadian licensing where applicable; always check the label.

This article is general information only and is not medical advice. These statements have not been evaluated by Health Canada. Supplements are not intended to diagnose, treat, cure or prevent any disease. Always read the label and consult a healthcare practitioner before taking any supplement.