A product licence is required for the  sale of  Natural Health Products(NHPs) in Canada unless you are a retailer. You are  not allowed to sell a natural Health product without a product licence even if you claim its doctor formulated as I have seen lately.

If the licence is cancelled or suspended, you are not allowed […]

The main obligation of Importers of natural health products to Canada is to comply with Natural Health Products GMP requirements. The purpose of these requirements is to ensure that imported products meet the same quality, safety and efficacy standards as locally manufactured products.
1.What Standards should imported products meet?
The regulations place an important the responsibility on […]

Natural Health Products are a collection of different types of products which are chemically unrelated and are used” in diagnosing, treating, mitigating, or preventing a disease, disorder, or abnormal physical state or its symptoms in humans; restoring or correcting organic functions in humans; or modifying organic functions in humans, such as modifying those functions in […]