Scientists are testing MDMA as a part of psychotherapy for several mental health problems, and some teams are beginning to study it for addiction. Most of the strong clinical evidence so far comes from MDMA trials for post‑traumatic stress disorder, not for addiction specifically. (This means we have ideas and early signs, but not a clear answer yet.) Researchers find MDMA can help people feel more trusting, open, and connected during therapy. These effects, plus careful preparation and follow-up therapy, are thought to be important for any benefit. Trials in medical settings have reported acceptable safety so far, but researchers warn that risks need careful monitoring and that many questions remain. Studies are small, often do not include many people of color, and it is still unclear how much of any help comes from the drug itself versus the therapy around it.