A description of a peer-run supervised injection site for injection drug users.

Owing to the ongoing health crisis among injection drug users in Vancouver, Canada, there have been repeated calls for the establishment of supervised injection sites (SIS) since the early 1990s. In April 2003, a group of advocates and drug users opened an unsanctioned SIS in Vancouver's Downtown Eastside. The "327 SIS" operated for 184 days. During the operation of the SIS, volunteers supervised over 3,000 injections by a high-risk injection drug using population. The SIS provided a sterile environment for injection drug use without measured negative consequences and demonstrated the feasibility of a peer-driven low-threshold SIS.