Trends and characteristics of extra-medical use of quetiapine among people who regularly inject drugs in Australia, 2011-2018.

Background And Aims: There are ongoing concerns regarding the extra-medical use of quetiapine and related harms. We aimed to investigate trends in quetiapine use and extra-medical use among people who regularly inject drugs (PWID) in Australia between 2011-2018, and examine changes in the characteristics associated with extra-medical use of quetiapine, comparing those reporting use in 2011 and 2018.

Methods: This study examines eight years of survey data (2011-2018; n = 7,135 PWID) from Australia's Illicit Drug Reporting System.