COVID-19 Info | Information sur la COVID-19 | COVID-19 Vaccine Vaccine Receipt | COVID-19 Self-Assessment
🔍 Search
  • Follow us:
Sign In FR

Middlesex-London Health Unit

Inner Nav


What is Fentanyl? Non-prescription (illegal) Fentanyl is a dangerous opioid which can be deadly in small amounts. Fentanyl is often prescribed in slow release patches that must be returned in order to receive new ones, however, powdered illegal Fentanyl is now being found mixed in street drugs. Fentanyl is 50 to 100 times more toxic than morphine, and has caused hundreds of deaths in Ontario, and all over Canada.


Why are we concerned?

  • Illegal Fentanyl is being pressed into pills to look like prescription drugs, but this kind of Fentanyl has no quality control and can easily go undetected.
  • Fentanyl has no smell, taste, or colour making it very difficult to detect and an easy drug to mix into other opioids, street and party drugs.
  • When Fentanyl is mixed with other opioids, alcohol, benzodiazepines (Ativan), or stimulants like cocaine, it increases the risk of accidental overdose.
  • Drugs can be tampered with at any point! People buying or selling drugs may not be aware if it has been mixed(cut or laced) with ANYTHING before they sell it to you!

Reduce your Risk

Learn how to reduce your risk of an opioid overdose.

What to do if you are going to use

Signs and symptoms of an overdose

What to do if you suspect an overdose



Fentanyl Infographic

Download (PDF)

Date of creation: October 6, 2017
Last modified on: November 6, 2017