Contact Health Canada at 1-800-267-9675 or by completing an online complaint form if you find a product listed above in the Canadian marketplace. Consult a healthcare professional if you have health concerns related to the use of any of these products. Read the label of the products you buy to verify that they have been assessed by Health Canada for safety, effectiveness and quality. Health products that have been authorized for sale by Health Canada will have an eight-digit Drug Identification Number (DIN), Natural Product Number (NPN) or a Homeopathic Drug Number (DIN-HM).