Montreal Public Health Warns of Overdose Spike as Naloxone Use Surges

Montreal public health officials have issued an urgent alert following a significant rise in overdose incidents, both fatal and non-fatal, warning that the city's drug supply has become increasingly toxic. The spike in emergency interventions requiring naloxone prompted the warning.

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We can link (carfentanil) to eight deaths so far … since the month of April.

Dr. David Kaiser, assistant medical director with Montreal Public Health, stated that carfentanil has been linked to at least eight deaths since April. He emphasized that despite the extreme toxicity of these drugs, naloxone remains an effective antidote. Kaiser stressed the importance of public vigilance, urging bystanders to recognize overdose signs, call 911 immediately, and remain with the affected individual until help arrives.

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We are all responsible for reducing the risk. Also, calling 911 and staying with that person until emergency, paramedics or first responders arrive is the right thing to do.

Paramedics have administered naloxone hundreds of times this year, putting 2026 on track to exceed last year's total, according to Urgence Santé. This increase is also seen as a reflection of heightened public awareness. Overdoses are becoming more visible, with individuals collapsing in public spaces like sidewalks and parks.

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Safe injection sites can be useful. However, the application of those sites and the amount of detail involved is complicated.

Kaiser noted that while carfentanil is a primary driver of the current crisis, recent heat waves may be intensifying the problem, particularly for vulnerable populations such as those experiencing homelessness. David Chapman, director of Resilience Montreal, reported that frontline workers are witnessing the severe impact, with some community members hospitalized in critical condition. He advocated for careful planning and adequate funding for harm reduction services, cautioning against simplistic solutions and the potential pitfalls of poorly implemented safe injection sites.

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We should avoid pushing people into situations where they are using alone, hidden away. That is not a good situation.