MDMA-assisted psychotherapy
MDMA-assisted psychotherapy (MDMA-AT), also known as entactogen-assisted psychotherapy, is the use of prescribed doses of MDMA or sometimes other entactogens as an adjunct to psychotherapy sessions. MDMA-assisted psychotherapy is an effective treatment for post-traumatic stress disorder (PTSD), including complex PTSD (C-PTSD).
Source: Wikipedia — MDMA-assisted psychotherapy (CC BY-SA 4.0)