2000-Present / Psilocybin

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Oregon Psilocybin Services Act (Ballot Measure 109)
Source, Approved by voters November 3, 2020; codified as Oregon Laws 2021, chapter 1

Oregon Measure 109

Oregon's 2020 ballot measure created the first US state-licensed psilocybin services program. The findings cite FDA's breakthrough-therapy designation for depression, and the statute establishes licensed service centers and facilitators rather than unsupervised legalization.

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Psychedelic Drugs: Considerations for Clinical Investigations (Guidance for Industry)
Source, July 2026 (finalizing a June 2023 draft)

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.

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