RecruitingPhase 3Drug trialTrial of Naltrexone/Bupropion for the Treatment of Methamphetamine Use DisorderThe primary objective of this study is to evaluate the efficacy of extended release naltrexone plus bupropion XL (XR-NTX/BUP-XL) compared to matched injectable and oral placebo (iPLB/oPLB) in reducing methamphetamine (MA) use in individuals with moderate or severe methamphetamine use disorder (MUD) seeking to stop or reduce MA use.