RecruitingDrug trialMDMA-Assisted Therapy for Veterans With PTSD and Alcohol Use DisorderThe study investigators are conducting the first randomized placebo-controlled trial of MDMA-assisted therapy with a comorbid sample of military Veterans with a co-occurring diagnosis of Alcohol Use Disorder (AUD) and Post-Traumatic Stress Disorder (PTSD). This novel experimental treatment package consists of three once-monthly Experimental Sessions of therapy combined with a divided-dose of MDMA HCl, along with non-drug preparatory and integrative therapy. The primary objective of the proposed project is to evaluate safety and clinical outcomes of MDMA-assisted therapy compared to identical psychotherapy with low dose ("active placebo") MDMA for the treatment of PTSD-AUD in military Veterans. The Primary Outcome measures, the Clinician Administered PTSD Scale (CAPS-5) and Inventory of Psychosocial Functioning (IPF), will evaluate changes in PTSD symptoms and psychosocial outcomes over time. Changes in drinking outcomes will also be evaluated (via the Timeline Followback, TLFB).