Laura Nevendorff, Sophia E. Schroeder, Alisa Pedrana, Adam Bourne, and Mark Stoové

Sexualized drug use (SDU), the use of psychoactive drugs in the context of sexual intercourse, has been identi- fied as a risk factor for HIV among men who have sex with men (MSM) in Asia. Given the distinct social and cultural context of same-sex relationships and drug-using practice in Asia, we aimed to describe the prevalence of SDU in East and South Asian countries and its associations with condomless anal sex (CAI) and HIV status. Synthesizing SDU research in this region, including SDU definitions, prevalence and outcomes, provides insights to inform future research and improved programme planning, resourcing and advocacy.