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Psychedelic Drugs: Considerations for Clinical Investigations (Guidance for Industry)

FDA Psychedelic Drugs Guidance

Considerations for Clinical Investigations (Guidance for Industry)

FDA guidance (July 2026) for sponsors developing psychedelics—5-HT2A agonists including psilocybin and LSD, plus MDMA—as approved medicines. It addresses the regulatory pathway for Schedule I drugs in clinical trials and identifies methodological challenges: perceptual effects complicate blinding ('functional unblinding'), and the independent contribution of psychotherapy paired with dosing remains uncharacterized.