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Withdrawn Phase 1 Interventional Accepts healthy volunteers

Bioavailability Study of Psilocybin in Normal Adults

ClinicalTrials.gov ID: NCT05467761

Public ClinicalTrials.gov record NCT05467761. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Nov 4, 2026, 8:42 PM EST

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Official title

A Phase 1 Study Comparing the Pharmacokinetics and Safety of Intravenous and Oral Psilocybin

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

The purpose of this research study is to compare an oral dose of psilocybin and an intravenous (IV) infusion of psilocybin to assess differences in how the drug is absorbed by the body, the psychedelic experience, and any side effects when taken by healthy adult participants. Participants can expect to be in the study for approximately 12 weeks.

Study identification

NCT ID
NCT05467761
Recruitment status
Withdrawn
Study type
Interventional
Phase
Phase 1
Enrollment
Not listed

Conditions and interventions

Conditions

Interventions

Drug

Eligibility (public fields only)

Age range
25 Years to 65 Years
Sex
All
Healthy volunteers
Accepts healthy volunteers

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Jun 2023 (Estimated)
Primary completion
Mar 2024 (Estimated)
Completion
Mar 2024 (Estimated)
Last update posted
May 15, 2023

2023 – 2024

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
University of Wisconsin Madison Wisconsin 53705 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT05467761, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted May 15, 2023 · Synced Nov 4, 2026

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Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT05467761 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →