Nitrosamine impurities in medications: Report a problem or concern

On this page

• If you're a consumer
• If you're a health care provider

If you're a consumer

You are encouraged to report adverse reactions or side effects you witness or experience. You can also work with your health care provider to submit a report.

Report a side effect

We review and assess all reports on drugs. We will contact you to gather more information if needed.

If you're a health care provider

Health care providers who suspect an adverse reaction (side effect) to a drug are strongly encouraged to report it. Talk to your patients about signs to watch for.

Report a side effect

Health Canada provides many sources of information on drug safety and risks. You can access:

• MedEffect Canada, where we post the results of our safety reviews
• recalls and safety alerts, where:
  • we post recalls on drugs
  • you can subscribe to receive information on safety risks associated with drugs
• drug product database, where you can find drugs authorized for sale in Canada
• summaries of decisions, where we provide background information that could be helpful when treating your patient

Related links

• About biologics
• MedEffect Canada
• About adverse reactions
• Adverse reaction database
• Canada Vigilance Program
• Advisories, warnings and recalls
• Drug and health product register
• Adverse reaction reporting and health product safety information - guide for health professionals