"Increasingly, SCS are incorporating services to address the risks associated with consuming adulterated drugs from the toxic drug supply. These services include incorporating drug checking services [60, 61] and the provision of pharmaceutical grade alternatives to street drugs (e.g., safe supply) [62, 63]; although these services are largely targeted to people who use opioids and often do not address the needs of people who use stimulants . As these services are relatively recent developments, they were not discussed in the included articles and therefore the extent to which they are incorporated within SCS that allow non-injection routes of consumption remains unclear. However, the current emphasis on innovative solutions to the overdose crisis  highlights the need for SCS to be responsive to the needs of their participants. Furthermore, the current COVID-19 pandemic has also demonstrated the importance of flexibility in response to the evolving needs of SCS participants . People who smoke illegal drugs may be particularly at risk for complications associated with respiratory illness . Many people who use drugs have been impacted by sudden closures of their SCS due to their inability to meet public health directives [68, 69], while other SCS had to reduce their capacity to meet physical distancing requirements . The operational characteristics of both injection and non-injection SCS should be flexible and continuously adapted to address local needs and context."
Speed, K. A., Gehring, N. D., Launier, K., O'Brien, D., Campbell, S., & Hyshka, E. (2020). To what extent do supervised drug consumption services incorporate non-injection routes of administration? A systematic scoping review documenting existing facilities. Harm reduction journal, 17(1), 72. doi.org/10.1186/s12954-020-00414-y.