From the CTV News piece:

Canada’s street supply of opioids is becoming increasingly toxic, unpredictable and contaminated thanks to ultra-potent and deadly mixtures of fentanyl, prompting renewed calls for safe supply programs that could help regain control of the drug supply and save lives.

It’s believed pandemic border closures have played a role in disrupting the supply chain, prompting the creation of new, more lethal cocktails.

“We’re absolutely losing control of the drug supply, and it’s causing people to die,” Karen McDonald, lead of the Toronto drug-checking service operated by St. Michael’s Hospital, told CTV National News.

“Fentanyl can be used safely … but it can’t be used safely when you have no idea how much fentanyl is in it.”

Launched in 2019 in response to the growing opioid epidemic, Toronto’s anonymous drug-checking service offers drug users detailed information on the contents of their drugs in a bid to reduce overdoses.