While no psychedelic-based therapy has been approved yet in the U.S., Lykos Therapeutics studied MDMA, more commonly called ecstacy or molly, in two late-stage studies.

The Food and Drug Administration’s panel of independent advisers will on June 4 deliberate whether they should recommend approval for the first MDMA-assisted therapy for post-traumatic stress disorder, Lykos Therapeutics said on Monday.

This would be the first FDA panel of outside experts to review a potential new PTSD treatment in 25 years.

PTSD is a disorder caused by very stressful events and can significantly disrupt patients’ lives.

Decades of studies has shown that psychoactive ingredients, whether derived from cannabis, LSD or magic mushrooms, have long captivated mental health researchers in their quest for treatments.