Every licensed natural health product sold in Canada carries an 8-digit Natural Product Number — the NPN — printed on the label. It looks small, but it represents something significant: before that product reached a store shelf or a website, Health Canada reviewed it.
What the NPN Actually Is
An NPN is a licence number issued by Health Canada's Natural and Non-prescription Health Products Directorate (NNHPD). It is granted only after a product application passes a formal safety, efficacy, and quality review under the Natural Health Products Regulations (SOR/2003-196).
The review covers three areas:
Safety: Are the ingredients safe at the proposed dose? Are there interactions with medications? Are specific population warnings required?
Efficacy: Does evidence support the health claim on the label? Health Canada requires references — clinical studies, traditional use data, or pharmacopoeial monographs — for every claim.
Quality: Does the manufacturing process meet Good Manufacturing Practices (GMP)? Is the product what it says it is at the dose stated?
A product cannot legally be sold in Canada as a natural health product without a valid NPN (or a DIN-HM for homeopathic products). This is not a self-certification system. Health Canada must issue the number.
Why This Matters More Than You Think
In the United States, dietary supplements are regulated under DSHEA — the Dietary Supplement Health and Education Act of 1994. Under DSHEA, supplement manufacturers are responsible for ensuring their products are safe before marketing. The FDA does not review or approve supplements before they are sold. Enforcement is after-the-fact.
This creates a meaningful difference. A bottle with a Canadian NPN has been reviewed by a federal regulator before sale. A US supplement sold into Canada without an NPN has not.
For cognitive health supplements specifically, this matters because many popular nootropic products originate from American brands operating under DSHEA. They are not illegal, but they have not undergone the pre-market review that Canadian NHP regulations require.
How to Verify an NPN
Health Canada publishes a public database of every licensed natural health product: the Licensed Natural Health Products Database (LNHPD). You can search by product name, company, or NPN at canada.ca.
When you search an NPN, you can see: - The exact product name as licensed - The company name and address - Every medicinal ingredient, dose, and health claim that was approved - The licence status (current, cancelled, suspended) - The conditions of the licence
If an NPN does not appear in the LNHPD, it is not a valid Canadian licence. If the product name or ingredients on the bottle do not match the LNHPD entry, that is a compliance issue worth flagging to Health Canada.
Where to Find the NPN on a Product
By regulation, the NPN must appear on the product's principal display panel — the main face of the label. It appears as "NPN XXXXXXXX" and is typically accompanied by "Natural Health Product" or "Produit de santé naturel" (bilingual labelling is required for products sold nationally in Canada).
On online stores, a reputable brand will display the NPN on the product page alongside the full ingredient list, recommended dose, cautions, and contraindications — not just in the downloadable label PDF. If a supplement's product page doesn't show an NPN, ask for it before purchasing.
The Bottom Line
The NPN is the clearest signal available to Canadian supplement buyers that a product has been independently reviewed for safety, efficacy, and quality before it was sold. It does not guarantee the supplement will work for you — individual responses vary — but it does mean someone other than the manufacturer checked the evidence.
At Cognitio Catalysts, all products are developed to meet NHP regulatory standards and display their NPN on every product page. Our company is registered with Health Canada under Company Code 79910.