How to Spot an Unlicensed Supplement on Amazon.ca

A note from Mansour, founder of Live 5AM. I sell on Amazon.ca myself, so I spend a lot of time on both sides of a listing: what a brand puts in the bullets, and what the licence behind the product actually says. Most shoppers only ever see the first half. Here is how to check the second half before you buy, using the same free tools I use.

Quick Answer

To spot an unlicensed supplement on Amazon.ca, find the eight-digit NPN (or a DIN-HM for homeopathics) on the label image, then search it in Health Canada's Licensed Natural Health Products Database. An active record should match the product's ingredients, doses and claims. A missing number, a number that does not resolve, or marketing that goes beyond the licensed use are the three red flags.

Where Do You Find the NPN on an Amazon.ca Listing?

Do not expect it in the title or the bullets. On many listings the NPN appears only on the product label, which means it lives in the image gallery rather than in searchable text.

Open the listing images and zoom in on the front panel and the side or back panel. Look for the letters NPN followed by eight digits, usually near the product name, the dose or the "Medicinal ingredients" box. If every image is a lifestyle photo or a rendering and none shows a legible label, that is worth noting before you go any further.

You can also message the seller through the listing and ask for the NPN. A brand with a licence knows its number by heart and will usually answer in one line. Silence, or an answer about "Health Canada approved facilities" instead of a number, tells you something too.

What Does a Valid NPN or DIN-HM Look Like?

An NPN (Natural Product Number) is eight digits, and recent licences generally begin with 80. Homeopathic medicines carry a DIN-HM (Homeopathic Medicine Number) in the same eight-digit format. A DIN on its own is a drug identification number, which is a different category of product.

The legal backdrop is simple. Section 4(1) of the Natural Health Products Regulations says that no person shall sell a natural health product unless a product licence has been issued for it. The NPN is how that licence shows up on a label.

Two phrases are not the same thing as a licence number: "made in a GMP facility" and "Health Canada approved" with no digits attached. The first describes where a product was made. The second is a claim, and a claim you cannot look up is not evidence.

What Should the Health Canada Record Match?

Take the number to the Licensed Natural Health Products Database and open the record. Our full guide to verifying an NPN walks through the screens. For a listing check, you only need five comparisons:

1. Status. The licence should be active, not suspended or cancelled.
2. Product and brand. The name and company should plausibly belong to what is on the label.
3. Medicinal ingredients and amounts. They should match the label in your hand, form for form and milligram for milligram.
4. Dosage form. A capsule licence should not be sitting on a gummy.
5. Recommended use or purpose. This is the wording Health Canada authorized, and it is the outer limit of what the brand may claim.

When any of the five fails, the number may have been copied from a different product or an older formulation. That does not prove bad intent, but it does mean the licence you looked up is not a licence for the bottle you are about to buy.

Which Red Flags Matter Most?

In rough order of seriousness:

• No NPN or DIN-HM anywhere on the label. A natural health product offered for sale in Canada without one has not been licensed here, so no Canadian record exists to check.
• A number that returns nothing. Recheck for a typo, then treat it as unverified.
• Ingredients or doses that differ from the record. The licence describes a specific product. A different product needs its own.
• Claims that exceed the licensed use. As an example, our Shilajit 500mg is licensed to help support normal free and total testosterone levels in men between 45 and 55 years. A listing for any shilajit that promises to boost testosterone in everyone is claiming more than that wording allows. The licence is the ceiling, so compare the bullets to it.
• A US-style label only. A "Supplement Facts" panel with no Canadian "Medicinal ingredients" box suggests a product made for another market. It is not proof of a problem on its own, but it is a reason to ask the seller for the NPN.
• The same NPN on several unrelated brands. This can be legitimate when one licence holder supplies more than one brand, so treat it as a prompt to check, not a verdict. Confirm the record fits the specific label, and ask the brand who holds the licence.

Why Does a Label Check Matter If the Product Looks Professional?

Because appearance is the cheapest thing to copy. Independent testing of supplements bought online has repeatedly found gaps between label and bottle, though none of it is a measurement of Amazon.ca specifically.

In a 2025 Swiss study, researchers bought 40 andrographis products from 13 countries, 27 of them from online retailers. Measured andrographolide ranged from 29% to 174% of the labelled dose, only 2 products were accurately labelled, and three online-purchased products contained contaminants including mercury or pesticides. In a 2024 JAMA Network Open case series, 25 of 30 online-marketed weight loss supplements had inaccurate labels.

Two honest caveats. These are different products in different countries, so they say nothing about the share of Amazon.ca listings that are a problem. And a Canadian licence is not a lab test of your batch either, because licensing assesses the product specification, not the individual bottle. What the check does is remove the most basic failure: a product nobody in Canada has reviewed.

What Should You Do If a Listing Fails the Check?

Pause the purchase. Message the seller and ask for the NPN and, if you want batch-level assurance, a certificate of analysis tied to a lot number. Brands with nothing to hide tend to reply quickly.

If the seller cannot show a valid licence, buy something else. You can use the "Report an issue with this product" link on the listing to flag it to Amazon, and you can raise concerns with Health Canada. If you have already taken a product and had a reaction, speak with a health care professional first.

How This Fits Into Your Daily Rhythm

You only need to do this once per product, the first time you buy it. Zoom into the label image, copy the NPN, search it, and compare the five items above. Then save the number in your notes and move on until the formula changes.

Try it on a bottle you already own. Ours are easy to check: NMN 600mg carries NPN 80139033, and its licensed uses include helping in energy metabolism and tissue formation. Search the number, read the recommended use, and see whether our page stays inside it. If you want the regulatory background for that product first, our NMN supplement Canada guide covers what is permitted.

Frequently Asked Questions

Does every supplement sold on Amazon.ca need an NPN?

Natural health products sold in Canada need a product licence, and the licence number appears on the label as an NPN, or a DIN-HM for homeopathic medicines. Section 4(1) of the Natural Health Products Regulations prohibits selling one without it. Products that are not natural health products, such as some foods, follow different rules.

How do I check an NPN from an Amazon.ca listing?

Zoom into the label image in the listing gallery, copy the eight-digit number, and search it in Health Canada's Licensed Natural Health Products Database. Confirm the licence is active and that the ingredients, doses and recommended use match the product and its marketing.

What does DIN-HM mean on a label?

DIN-HM stands for Homeopathic Medicine Number. It is the licence number for homeopathic products, in the same eight-digit format as an NPN. A plain DIN without the HM is a drug identification number, which is a different category.

Is an NPN on the listing enough to trust the product?

It is a strong first step, not the last one. The number only helps if the record matches the product in your hand. Licensing also assesses the product specification rather than your individual batch, so a certificate of analysis is the next level of assurance.

Can a product have an NPN and still make claims the licence does not allow?

Yes. The NPN is only as useful as the match between the licensed recommended use and the marketing. If the bullets promise outcomes that the authorized wording does not state, the brand is going beyond its licence, and that is worth treating as a warning sign.

The Bottom Line

The most reliable thing on an Amazon.ca supplement listing is a number you can look up for free. Find it on the label image, search it, and make sure the record fits the product and the promises.

It takes two minutes, it needs no special knowledge, and it filters out the biggest category of avoidable mistakes. If a listing cannot pass it, you have lost nothing by walking away.

This article is for informational purposes only and is not medical advice. Licence records change, so always check the current entry on Health Canada's site. Speak with a health care practitioner before starting a supplement, and report any reaction to a product to a health care professional.

Sources

1. Government of Canada. Natural Health Products Regulations (SOR/2003-196), section 4. Justice Laws Website.
2. Health Canada. Licensed Natural Health Products Database (LNHPD). health-products.canada.ca.
3. Bourqui A, et al. Quality assessment of Andrographis paniculata products reveals significant labelling inaccuracies and contaminations. Swiss Med Wkly. 2025 (DOI).
4. Crawford C, et al. Label accuracy of weight loss dietary supplements marketed online with military discounts. JAMA Netw Open. 2024 (DOI).