Supervised injection sites (SIS) or drug consumption rooms (DCRs) are a health and social response to drug-related problems. They are fixed or mobile spaces where people who use drugs are provided with sterile drug use equipment and can use illicit drugs under the supervision of trained staff. They are usually located in areas where there is an open drug scene and where injecting in public places is common. The primary target group for DCR services are people who engage in risky drug use.

Harm reduction, or harm minimization, refers to a range of intentional practices and public health policies designed to lessen the negative social and/or physical consequences associated with various human behaviors, both legal and illegal. Harm reduction is used to decrease negative consequences of recreational drug use and sexual activity without requiring abstinence, recognizing that those unable or unwilling to stop can still make positive change to protect themselves and others.