Saxon AJ, et al. - Herein, researchers reported the outcomes for XR-NTX for opioid use disorder in clinical practice in Vivitrol's Cost and Treatment Outcomes Registry. They observed greater treatment duration in association with better mental health, higher education, and lower recent drug use at baseline among opioid-dependent people receiving extended-release naltrexone treatment. In association with longer treatment duration, lower relapse rates and improved outcomes were observed generally.