Consult with your health-care professional if you have used any of these products and have health concerns. Read the product label. Health products that have been authorized for sale by Health Canada have an eight-digit DIN, a DIN-HM or a NPN. Verify that your health products have been authorized for sale by searching the Drug Product Database , Medical Devices Active Licence Listing (MDALL) and the Licensed Natural Health Product Database . Report any adverse events to Health Canada Report complaints about health products to Health Canada by calling toll-free to 1-800-267-9675, or complete an online complaint form .