Lambton Public Health (LPH) has issued an advisory following recent reports indicating a potential increase in the toxicity of unregulated drugs circulating in the Sarnia-Lambton area. The advisory, released on October 15, 2025, emphasizes that an increased risk of opioid-related overdose or poisoning may be linked to two newly detected substances in Ontario, as reported […]

Lambton Public Health (LPH) has issued an advisory following recent reports indicating a potential increase in the toxicity of unregulated drugs circulating in the Sarnia-Lambton area.
The advisory, released on October 15, 2025, emphasizes that an increased risk of opioid-related overdose or poisoning may be linked to two newly detected substances in Ontario, as reported by Toronto’s Drug Checking Service. Officials caution that multiple doses of naloxone may be necessary, as typical doses might not be enough to reverse the effects of the current unregulated supply.
To help prevent an opioid-related overdose or poisoning, LPH continues to recommend several key actions:
Don’t mix with alcohol or other drugs.
Don’t use alone.
Know the signs of an opioid overdose.
Carry a naloxone kit.
Signs of an opioid overdose/toxicity include:
Difficulty walking, talking, or staying awake.
Blue or grey lips or nails.
Very small pupils.
Cold and clammy skin.
Dizziness and confusion.
Extreme drowsiness.
Choking, gurgling, or snoring sounds.
Slow, weak, or no breathing.
Inability to wake up, even when shaken or shouted at.
Free naloxone kits are available from Lambton Public Health, local pharmacies, and several partner agencies, including Community Health Centres, with location details posted online.
In the event of a suspected opioid overdose or poisoning, the public is urged to immediately call 911 and stay at the scene to provide information to paramedics. Individuals should administer naloxone if they have it. The Good Samaritan Drug Overdose Act offers legal protection to those who seek emergency help during an overdose.
LPH is actively working with health system and community partners to validate all reports of recent opioid-related overdoses or poisonings. You can find more information on their website.
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