 MDMA is a substance that has unique effects that make it well suited to intensive psychotherapy. MDMA may belong to a new class of drugs, called entactogens, that produce feelings of closeness to others, empathy, well being, and insightfulness. Currently, MDMA is scheduled in the US and Israel, and doctors and therapists cannot give it to people outside of research studies like this one. Anecdotal reports of therapy conducted before MDMA was made illegal suggest that MDMA-assisted psychotherapy may benefit people with PTSD, and there is an ongoing placebo-controlled study of MDMA-assisted psychotherapy in people with crime or war-related PTSD occurring in the US. 