Consult your healthcare practitioner if you have used any of these products and are concerned about your health. Read the label of all 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), a Natural Product Number (NPN) or a Homeopathic Medicine Number (DIN-HM) on the label. Some natural health products may have an Exemption Number (EN), which indicates that the product is legally available for sale while Health Canada is in the process of reviewing their application for licensing. Report any adverse reaction potentially related to these products to Health Canada (see below).