This Overview of International Literature collates what we understand to be a full list of the relevant published papers and reports on drug consumption rooms (DCRs) and supervised injecting facilities (SIFs) internationally. We included papers and reports where SIFs/DCRs were the main topic or where SIF/DCR clients were the population studied. The aim of this document is to provide an exhaustive, easy to read overview of scientific literature pertaining to SIFs/DCRs internationally that would facilitate scholars in summarizing main research areas, as well as identifying the key scientific contributions and in preparation of advocacy materials.