An NPN, or Natural Product Number, is an eight-digit number issued by Health Canada for a natural health product that has received product licence authorization for sale in Canada. For consumers, an NPN is usually displayed on the product label. It identifies a licensed natural health product and helps distinguish it from products that have not received the same type of product authorization. Homeopathic medicines use a different eight-digit identifier called a DIN-HM. For a brand, obtaining an NPN is not simply an administrative label step. A product licence application must provide information about the product, including its medicinal ingredients, source, potency, non-medicinal ingredients and recommended use. The evidence and product details must support the proposed conditions of use. The NPN is specific to the authorized product and its approved conditions of use. It should not be treated as a broad endorsement of every marketing statement, future formula revision or unrelated product. Labels, claims, dosage information and cautionary statements should remain aligned with the authorized product information. Before a product is launched, teams commonly coordinate formulation, ingredient documentation, label content, claim substantiation and product licence requirements. These workstreams should be reviewed together, because a late change to a formula, dosage form, recommended use or label may affect the regulatory path. Consumers and businesses can consult Health Canada’s Licensed Natural Health Products Database to look up licensed products. For regulatory decisions, always work from the current requirements and obtain qualified professional review for the specific product and intended market. This article is educational information only and is not legal, regulatory or medical advice.