Psychonaught / Wikimedia MDMA could be used as a treatment for PTSD, according to a new study. Most of all 26 participants had few or no PTSD symptoms a year after taking MDMA with therapy sessions. The response to the results has been mixed, and some researchers are skeptical. Another larger clinical trial will take place in the summer. Researchers are hopeful that if the trial is successful, MDMA could be FDA approved by 2021. The idea of using recreational drugs to treat health problems is picking up pace.