Randomized trial shows improvement in depressive symptoms in adults with treatment-resistant depression, suggesting a new treatment direction.
An individualized one‐day dosing regimen of a vaporized formulation of the psychedelic mebufotenin (5‐methoxy‐ N,N ‐dimethyltryptamine; 5‐MeO‐DMT) was more effective than placebo in improving depressive symptoms in adults with treatment‐resistant depression, a Phase 2b trial has found. No serious treatment‐emergent adverse events were reported during the 7‐day study. Results were published online March 2, 2026 in JAMA Psychiatry .
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