Montreal public health warns of rise in overdoses linked to fentanyl and carfentanil
MONTRÉAL — Montreal’s regional public health department is sounding the alarm over a significant rise in overdoses linked to fentanyl use, as well as several fatal overdoses involving carfentanil.
The health department says paramedics have administered naloxone medication more than 925 times since the start of the year, which is 25 times more than in all of 2025.
Naloxone blocks the body’s receptors that absorb opioids such as fentanyl, heroin, morphine, and oxycodone, and its use by paramedics is considered an indicator of overdose trends.
The department says in addition to the growing number of non-fatal overdoses, fatal overdoses involving carfentanil are a cause for public health concern.


