MP-1 E2 U.S. MDMA/PTSD Relapse Treatment Study Updates related to the US MDMA/PTSD Relapse Treatment Study MP-1 E2 can be found below: US MDMA/PTSD (Completed) Swiss MDMA/PTSD (Completed) Israeli MDMA/PTSD Canadian MDMA/PTSD Jordanian MDMA/PTSD US MDMA/PTSD in Veterans of War Australian MDMA/PTSD