Clinical Trial

Direct Comparison of Altered States of Consciousness Induced by LSD, Psilocybin, and DMT in Healthy Participants

Study acronym: LPD
Recruiting Phase 1
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Record status
This record was last updated March 27, 2025 (before its estimated August 1, 2026 completion). Its status may not reflect the trial's current state.
Summary
The primary objective of this study is to determine whether equivalent moderately high doses of LSD, psilocybin, and DMT produce qualitatively similar peak effects when the effect duration is standardized with ketanserin. A DMT infusion mimicking oral LSD and psilocybin administrations will be tested, as well as intravenously administered ketanserin.
Trial Details
NCT Number NCT06899334
Lead Sponsor University Hospital, Basel, Switzerland
Conditions Healthy
Enrollment 24 participants
Start Date 2025-04-01
Primary Completion 2026-08-01 (estimated)
Study Completion 2026-08-01 (estimated)
Updated on ClinicalTrials.gov 2025-03-27