N-Methyl-3,4-methylenedioxyamphetamine. Hallucinogens. Physiological Effects of Drugs. Psychotropic Drugs. Serotonin Agents. ... A Multi-Site Phase 3 Study of MDMA-Assisted Psychotherapy for PTSD (MAPP2). The safety and scientific validity of this study is ... The SDS is a 3-item scale measuring the severity of disability in the domains of work, family life/home responsibilities and ... 3,4-methylenedioxymethamphetamine (MDMA)-assisted psychotherapy may be a potential treatment option for PTSD. MDMA is a ...