RecruitingPhase 1Drug trialStudy of Midomafetamine in Healthy AdultsThis Phase 1 study is designed to evaluate the safety and tolerability of midomafetamine in healthy adult participants. The study will also assess how the drug is processed in the body and characterize its effects following administration at two dose levels, including evaluation of cardiac safety using electrocardiographic assessments. This is a single-center, open-label study in which participants will be enrolled into one of two cohorts receiving either a therapeutic dose or a supratherapeutic dose of midomafetamine. Participants will receive study drug in a split dose administration (an initial dose followed by an additional dose 1.5 hours later) and will undergo clinical assessments, laboratory testing, electrocardiographic monitoring, and monitoring for adverse events. Information collected from this study will be used to support the ongoing clinical development of midomafetamine.