FDA advisors reject MDMA therapy for PTSD, amid concerns over research

A panel of experts advising the Food and Drug Administration on the use of the psychedelic MDMA for post-traumatic stress disorder found on Tuesday that the available evidence fails to show that the drug is effective or that its benefits outweigh its risks.

It represents a major setback for proponents of the drug and its sponsor Lykos Therapeutics, potentially jeopardizing FDA approval of the treatment.