If you've looked at a natural health product label in Canada, you've likely noticed an eight-digit number preceded by "NPN" printed somewhere on the packaging. But what does that number actually mean, and why should it matter to you as a consumer?
NPN: Natural Product Number
NPN stands for Natural Product Number. It is a unique identifier assigned by Health Canada to natural health products (NHPs) that have been reviewed and authorized for sale in Canada. When a product carries an NPN on its label, it means Health Canada has assessed the product for three things: safety (is the product safe when used as directed?), efficacy (does the product do what it claims to do, based on the evidence provided?), and quality (is the product manufactured to consistent standards?).
This review process is not optional. Under the Natural Health Products Regulations (which came into force in 2004), any product sold in Canada that makes a health claim and falls under the NHP definition --- including herbal remedies, vitamins, minerals, homeopathic preparations, and certain topical products --- is required to hold either an NPN or a DIN-HM (Drug Identification Number --- Homeopathic Medicine) before it can be legally sold.
What the NPN Review Process Involves
To receive an NPN, a product manufacturer must submit a product licence application to Health Canada's Natural and Non-prescription Health Products Directorate (NNHPD). This application must include the product's complete ingredient list and quantities, evidence supporting the health claims being made (this can come from traditional use evidence, published scientific literature, or clinical trials, depending on the claim type), details about the manufacturing process and quality controls, the complete product label, and all cautions, warnings, and contraindications.
Health Canada evaluates the application against established monographs --- standardized documents that set out the acceptable ingredients, doses, claims, and conditions of use for specific types of products. If the product meets all requirements, it receives an NPN and is authorized for sale.
Why It Matters for Topical Pain Relief Products
The NHP marketplace includes a wide range of products, and not all of them carry an NPN. Some products may be sold as cosmetics or general wellness products that do not make therapeutic claims and therefore do not require an NPN. Others may be marketed online without proper authorization.
For topical pain relief products specifically, an NPN means the product's therapeutic claim --- for example, that it is used in Herbal Medicine to help relieve pain and inflammation in muscles and joints --- has been reviewed and accepted by Health Canada based on the evidence submitted. This is a meaningful distinction from products that make similar-sounding claims without regulatory review.
How to Verify an NPN
Health Canada maintains a public database called the Licensed Natural Health Products Database (LNHPD). Anyone can search this database to verify that a product's NPN is legitimate and to see exactly what claims the product is authorized to make. To check a product, visit Health Canada's LNHPD website and enter the NPN. The database will show the product name, the licence holder, the medicinal ingredients, the authorized health claims, and any conditions of use.
For example, Pain Be Gone PRO+ holds NPN 80074632. Searching this number in the LNHPD will confirm that the product is authorized for sale in Canada and show the specific conditions under which it is authorized to be marketed.
Frequently Asked Questions About NPN
Does NPN mean "Health Canada approved"?
Not exactly. The correct terminology is "authorized for sale" by Health Canada. The NPN indicates the product has been reviewed and found to meet Health Canada's requirements. Health Canada does not use the word "approved" for natural health products to avoid implying a level of endorsement beyond what the review entails.
Is NPN the same as DIN?
No. DIN (Drug Identification Number) is assigned to pharmaceutical drugs regulated under the Food and Drugs Act. NPN is assigned to natural health products regulated under the Natural Health Products Regulations. Some herbal products may hold a DIN-HM (Drug Identification Number --- Homeopathic Medicine), which is a different category again.
If a product doesn't have an NPN, does that mean it's unsafe?
Not necessarily. Products that don't make therapeutic health claims --- such as cosmetics or general wellness products --- are not required to hold an NPN. However, if a product does make a specific health claim (such as relieving pain), it is required to hold an NPN or equivalent authorization to be legally sold in Canada.
This article is for informational purposes only and is not intended as medical advice. Always consult a healthcare professional for diagnosis and treatment.
COMPLIANCE NOTE: This post is entirely educational about the NPN system. It does not make product-specific therapeutic claims beyond referencing the TMA. "Authorized for sale" is used correctly throughout. The distinction between "approved" and "authorized" is explicitly addressed. No comparative therapeutic claims. No superlatives.