Cannabis adverse reaction: get help and report it
Treat urgent symptoms first, preserve product information and report the reaction to Health Canada.
Call 911 for unconsciousness, breathing difficulty, seizure, chest pain or behaviour putting someone in danger. For poisoning, contact the poison centre.
Get clinical advice
Stop use and seek advice from a professional or poison centre according to symptoms. Do not drive or combine other substances.
Preserve product details
Keep packaging, brand, lot, potency, purchase date and place, amount and route used, other medication and timeline. Secure the product out of reach.
Submit the report
Health Canada allows consumers to report a side effect from a cannabis product. Provide useful medical facts without waiting to prove causation.
Notify other parties
As appropriate, inform a professional, retailer or producer and check recalls. Vigilance reporting does not replace a commercial complaint or medical follow-up.
Report side effects from cannabis products — Health Canada