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Published December 5, 2025

Health Unit warns of dangerous drug poisonings linked to animal tranquilizers

Health Unit warns of dangerous drug poisonings linked to animal tranquilizers
Naloxone, an overdose drug THE CANADIAN PRESS/Ryan Remiorz

The Simcoe Muskoka District Health Unit is warning residents about reports of severe drug poisonings in the community linked to substances believed to contain animal tranquillizers.

These incidents have involved symptoms such as seizures and prolonged confusion, making them harder to treat than typical opioid overdoses.

“Please call 911 when responding to a drug poisoning because additional medical support might be needed,” the health unit advised.

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Although details about the substance are limited, officials believe the unusual symptoms may be caused by tranquillizers such as xylazine or medetomidine being present in the drug supply.

The health unit is urging people to know the signs of a drug poisoning, which include:

  • Inability to wake the person
  • Slow or stopped breathing
  • Snoring or gurgling sounds
  • Blue, purple, or grey fingernails and lips
  • Limp body
  • Tiny pupils or eyes rolled back

What can you do?

  • Carry and know how to use Naloxone
  • Use drugs with a friend who can respond if needed
  • Choose a safe space with trusted people
  • If alone, call or text the National Overdose Response Line at 1-888-688-6677
  • Start low and go slow
  • Use only one substance at a time
  • If someone overdoses, call 911 immediately

The health unit emphasizes that these steps can save lives, especially as the local drug supply becomes increasingly unpredictable.

For more information and resources, visit the Simcoe Muskoka District Health Unit website.

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