NPN

A Natural Product Number (NPN) is the eight-digit identifier Health Canada assigns to a licensed Natural Health Product (NHP) under the Natural Health Products Regulations (SOR/2003-196). It is the visible end-state of a Product Licence application reviewed by the Natural and Non-prescription Health Products Directorate (NNHPD). The number must appear on the principal display panel of every unit sold in Canada and is the single artefact a Canada Border Services Agency officer checks at the border — a shipment of unlicensed NHP is refused or seized.

There are three issuance pathways. Compendial (Class I) — the formulation matches a published NNHPD monograph exactly, target review 60 days. Traditional (Class II) — the indication is supported by traditional-use evidence with a monograph reference, 90 days. Non-traditional (Class III) — full evidence dossier, 210 days or more. Homeopathic medicines receive a DIN-HM in the same scheme. The NPN ties to a specific formula, dose, route and set of authorised claims; any change to the formulation, dose or claim requires a licence amendment before the changed product is sold.

NPN issuance is necessary but not sufficient — the importer or manufacturer must also hold a Site Licence under Part 4 of the NHPR, and the manufacturing site must meet Part 3 GMP enforced through Health Canada's GUI-0048 inspections. In V5 the NPN is carried as the SKU's Canadian regulatory record alongside the Site Licence, the licence-holder name, the recommended dose and the authorised claims, so the label printer pulls the eight-digit number from the same place that controls the master formula and the indication wording on the label cannot drift past the licensed claim.