Grey Bruce Public Health has issued an overdose alert after reports of 4 overdoses within the last 5 days.
While still pending toxicology results its believed fentanyl is the substance used in 3 of 4 of the overdoses.
One of the non fatal overdoses methamphetamine is suspected but signs of opiod overdose was present.
Naloxone was used in three of the incidents.
The alert is to advise people to use extreme caution when using unregulated street drugs and follow harm reduction strategies.