Short answer: Canada is stricter than the US in one key way — supplements need a licence before they go on sale. Most vitamins, minerals, and herbal products are regulated as "Natural Health Products", and every one needs an authorisation number on the label before it can legally be sold. Here's how the system works, and the one gap that catches cannabis-curious brands.
NHPs need a licence before sale
In Canada, most supplements are Natural Health Products (NHPs) — vitamins, minerals, herbal remedies, amino acids, probiotics, traditional medicines, and similar — regulated under the Natural Health Products Regulations (NHPR) since 2004, overseen by Health Canada's Natural and Non-prescription Health Products Directorate (NNHPD).
The headline rule: every NHP must have a product licence, with an eight-digit Natural Product Number (NPN), before it can be sold in Canada. Unlike the US — where supplements don't get pre-approval — Canada requires you to obtain that NPN up front. An NPN on the label signals that Health Canada has reviewed the product and authorised it as safe and effective for its stated use. (Homeopathic medicines get a DIN-HM instead.)
Two licences, not one
Two separate authorisations are in play, and brands often forget the second:
- Product licence (the NPN): obtained by filing a Product Licence Application (PLA) with the NNHPD, with detailed information on medicinal ingredients, source, potency, non-medicinal ingredients, and recommended use.
- Site licence: anyone who manufactures, packages, labels, or imports NHPs for sale in Canada must hold a site licence, operating under Good Manufacturing Practices. Foreign manufacturers work through a licensed Canadian importer and a foreign site reference number.
So even a perfectly compliant product can't be sold if the site side of the equation isn't licensed.
How hard the review is depends on your evidence
The PLA pathway is tiered by how well-supported your ingredients are:
- Class I — every medicinal ingredient matches a single NNHPD monograph (Health Canada's pre-set, pre-approved ingredient standards). This is the fastest route, with the shortest review target.
- Class II — ingredients are supported by multiple monographs. Medium review time.
- Class III — at least one ingredient isn't covered by a monograph, so you must submit independent scientific evidence of safety and efficacy. This is the slowest and most demanding route.
The practical lesson: if your formula sticks to ingredients with existing Health Canada monographs at the monograph doses, licensing is far faster and more predictable. Step outside them and you're into Class III evidence territory.
The CBD gap
Here's the trap for any brand thinking about cannabinoids. CBD is not available through the NHP pathway at all. Health Canada placed all phytocannabinoids on the Prescription Drug List, and cannabis is expressly excluded from the Natural Health Products Regulations. CBD is instead regulated under the Cannabis Act, sold only through licensed, age-restricted cannabis channels — not the vitamin aisle. There is currently no legal route to sell a non-prescription CBD supplement making health claims in Canada, though Health Canada has been exploring a possible future pathway. So a "CBD wellness supplement" that's fine to contemplate in some markets simply has nowhere to live in the Canadian NHP system today.
The practical takeaway
For Canada, work through:
- Will every ingredient have an NPN-able basis — ideally matching an NNHPD monograph (Class I/II) rather than needing independent evidence (Class III)?
- Is your manufacturing/import site licensed? No site licence, no sale.
- Are any ingredients outside the NHP system entirely — most importantly CBD and other cannabinoids, which live under the Cannabis Act, not the NHPR?
Canada rewards preparation: a monograph-aligned formula with proper licensing is a clean, well-defined path. The brands that struggle are the ones who treat it like the US "no pre-approval" model — or who assume CBD fits where it doesn't. Regulave checks your ingredients against Canadian requirements, including flagging the cannabinoids that fall outside the NHP framework, before you commit.
Last reviewed: June 2026. This article is general information, not legal or regulatory advice; Health Canada's framework is detailed and evolving (including ongoing modernisation of NHP oversight). Verify current requirements with Health Canada or a qualified professional. Check your formulation against Canadian rules with Regulave →