RecruitingPhase 2Drug trialMDMA-Assisted Therapy for Veterans With Moderate to Severe Post Traumatic Stress DisorderThis randomized, double-blind, single-site phase II 2-arm study will investigate the safety and preliminary efficacy of MDMA-assisted therapy compared with low dose d-amphetamine-assisted therapy on the severity of PTSD symptoms in participants aged 18 years and older with PTSD of at least moderate severity.