A new opioid has been found in Toronto’s drug supply and users may not even know it – CBC

Cychlorphine found in 3 samples collected between Oct. 25 and 28, says drug checking service

Nov 04, 2025

A new opioid has been detected in Toronto’s unregulated drug supply, according to a new report, and users may not even know they’re taking it.

Toronto’s Drug Checking Service said in a report last week that a new opioid, known as cychlorphine, was found in three fake pharmaceutical opioid samples collected in the city’s downtown core and the west end between Oct. 25 and 28.

One of the samples was expected to be hydromorphone, Dilaudid, another was expected to be oxycodone, OxyContin, and the third was said to be Percocet. But none contained their expected drug — only cychlorphine, the report said.

Karen McDonald, the executive director for Toronto’s Drug Checking Service, said those using the opioid don’t even know it.

Read more: https://www.cbc.ca/news/canada/toronto/new-opioid-toronto-unregulated-drug-supply-9.6966764