Researchers at NYU Grossman School of Medicine say 86.6% of people living with opioid use disorder (OUD) in the United States are not receiving medications proven to reduce opioid overdoses, including methadone, buprenorphine, and extended-release naltrexone. Their study, published in International Journal of Drug Policy, looked at differences between new estimates of OUD prevalence and the use of medications for OUD (MOUD) at the national and state levels from 2010 to 2019.