Ontario integrated supervised injection services (OiSIS) evaluation in Toronto, Ontario

This project is part of the Centre on Drug Policy Evaluation.

In Progress

Substance Use and Harm Reduction

COVID-19 update: We are building on this study to better understand the pandemic’s impact on people who inject drugs in Toronto. Learn more

Supervised-injection services are spaces where people can inject illegal drugs, typically opiates or cocaine, under the supervision of trained health staff and without fear of arrest.

Research shows that stand-alone supervised-injection services work well to reduce public drug use and to prevent overdoses as well as risky injection practices. They also provide a pathway to help people who use drugs to access the drug treatment, health care and social services that they need.

While the evidence base for stand-alone supervised-injection services is strong, there is not as much research on the effectiveness on supervised-injection services that are integrated into existing health-care agencies. This model is being implemented in Ontario, with the goal of making it easier for clients to access the services that that they need.

How well do supervised-injection services work when they’re integrated within community health-care agencies?

To find out, we are surveying people in Toronto who inject drugs (including those who do and don’t use safe-injection services) at regular intervals, examining and linking administrative data sets that include information about people who inject drugs in Toronto, and tracking the use of three integrated safe-injection services in Toronto.

In the midst of changes to supervised-injection services across the province, our results will provide a strong evidence base to inform policy discussions at the provincial and regional level.

Substance Use and Harm Reduction

Dr. Dan Werb

A sought-after source of expertise on addictions and drug policy, Dr. Werb has devoted his career to the development of effective solutions to protect health and human rights among communities affected by drug use.


  • Dr. Ayden Scheim (Drexel University) Principal Investigator


  • Ruby Sniderman, Research Coordinator
  • Liz McLean (Queen West Community Health Centre)


  • Canadian Institutes of Health Research


  • British Columbia Centre on Substance Use
  • Ontario HIV Treatment Network
  • Ontario Ministry of Health and Long-Term Care
  • Parkdale Queen West Community Health Centre
  • Public Health Ontario
  • Sandy Hill Community Health Centre
  • South Riverdale Community Health Centre
  • The Works, Toronto Public Health
  • Toronto Public Health
  • University of British Columbia
  • University of Ottawa

Contact Info

Ruby Sniderman

Research Coordinator