More than 80 per cent of drugs sold as heroin on the streets of Vancouver don’t contain any heroin at all, while nearly all of the city’s street drugs contain the powerful synthetic opioid fentanyl, [...]

The centre gave local users the opportunity to check their drugs not only for the presence of fentanyl, but a wide range of substances. The final results, [...] show that fentanyl has overwhelmingly supplanted the local supply of illicit opioids, and heroin in particular.