How to Recognize and Respond to Opioid Poisoning

Opioid poisoning is a medical emergency — and every second counts. Tragically, thousands of Canadians lose their lives each year to opioid-related harm. By learning how to recognize the signs and respond with naloxone, you could help save a life.
 

Understanding the Opioid Crisis in Canada

Canada is in the midst of a public health crisis. In 2024 alone, 7,146 people died due to opioid toxicity. Since 2016, over 52,544 Canadians have lost their lives, according to the Government of Canada. Many of those affected are first-time or occasional users. The crisis has impacted people from all backgrounds, communities, and jobs.

Opioids are a class of drugs that slow down the central nervous system. They include prescription drugs like morphine, codeine, and oxycodone. They also include illegal drugs like heroin and fentanyl. While people often use them for pain management, misuse—or even a single accidental dose—can lead to fatal outcomes.

The Canadian Red Cross is committed to reducing opioid-related deaths by increasing access to first aid training and education on how to use naloxone, a medication that temporarily reverses the life-threatening effects of opioid poisoning.
 

Signs of Opioid Poisoning

Not all symptoms may appear, but watch for:
  • Slow, irregular, or absent breathing
  • Pale, cold, or blue/grey skin or lips
  • Extreme drowsiness or unconsciousness
  • Tiny (pinpoint) pupils
  • Seizures or unresponsiveness
If you suspect opioid poisoning, call 911 immediately and be ready to act.
 

What to Do in an Opioid Poisoning Emergency

1. Check the Person

  • Tap and shout to check for responsiveness.
  • Call 911 right away.
  • Begin CPR if the person is not breathing.

2. How to give naloxone

  • Use either nasal spray or intramuscular injection.
  • Tilt the head back before administering nasal naloxone.
  • Continue CPR if necessary.

3. Monitor and Repeat

  • If there's no improvement after 2–5 minutes, give a second naloxone dose.
  • Once breathing resumes, place the person in the recovery position.
Tip: Naloxone is safe, effective, and can temporarily reverse the effects of opioid poisoning. Some provinces and territories offer free naloxone kits for you to take home. Check with your province or territory for availability.


How You Can Help the Opioid Crisis

The Canadian Red Cross First Aid for Opioid Poisoning online course teaches you how to recognize an opioid emergency, respond confidently, and administer naloxone. The self-paced course takes about an hour to complete and costs $30.


Register now and gain life-saving skills today

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Respond with Confidence. Save a Life.