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Clinical Trials/NCT07360301
NCT07360301Not yet recruitingPhase 1

Consciousness and Psilocybin Effects on Well-Being: The CoPEWell Study

University of Wisconsin, Madison1 site in 1 country120 target enrollmentStarted: September 1, 2026Last updated:
Interventions

Trial Snapshot

Phase
Phase 1
Status
Not yet recruiting
Enrollment
120
Locations
1
Primary Endpoint
Change in Warwick Edinburgh Mental Wellbeing Scale (WEMWBS) score: Psilocybin Awake versus Asleep

Study Overview

Brief Summary

This study is exploring how psilocybin (a psychedelic drug) may improve mood and wellbeing. Many people report feeling better after taking psilocybin, but it is not clear why. The CoPEWell study will test whether these improvements come from the psychedelic experience itself (the "trip") or from direct effects on the brain. To study this, up to 120 participants will be enrolled to receive psilocybin either while awake or asleep and can expect to be on study for up to 4 months.

Detailed Description

Primary Objectives:

  1. To evaluate the effect of psilocybin on wellbeing when administered while awake vs. while asleep
  2. To evaluate the effect of psilocybin on wellbeing administered while asleep vs. placebo administered while asleep

Secondary Objectives: 3. To evaluate the effect of psilocybin on psychological flexibility when administered while awake vs. while asleep 4. To evaluate the effect of psilocybin on psychological flexibility administered while asleep vs. placebo administered while asleep 5. To evaluate the effect of psilocybin on social connectedness when administered while awake vs. while asleep 6. To evaluate the effect of psilocybin on social connectedness administered while asleep vs. placebo administered while asleep 7. To evaluate the effect on wellbeing/life satisfaction/purpose/meaning explicitly ascribed to psilocybin administered while awake vs. while asleep 8. To evaluate the effect on wellbeing/life satisfaction/purpose/meaning explicitly ascribed to psilocybin administered while asleep vs. saline placebo administered while asleep

Study Design

Study Type
Interventional
Allocation
Randomized
Intervention Model
Parallel
Primary Purpose
Basic Science
Masking
Double (Participant, Outcomes Assessor)

Eligibility Criteria

Ages
18 Years to 45 Years (Adult)
Sex
All
Accepts Healthy Volunteers
Yes

Inclusion Criteria

  • Age 18 to 45 years (inclusive) at screening, of any identified gender and racial/ethnic group
  • Physically healthy; does not meet criteria for an exclusionary medical condition
  • No exclusionary sleep condition
  • English-speaking (able to provide consent and complete questionnaires)
  • Sub-optimal self-reported wellbeing

Exclusion Criteria

  • Exclusionary DSM-5 psychiatric diagnosis and/or active suicidal ideation
  • Exclusionary medical conditions or sleep conditions
  • Clinically significant safety lab abnormalities (i.e., Complete Blood Count with Differential, Comprehensive Metabolic Panel, and urinalysis)
  • Clinically significant electrocardiogram (ECG)
  • Use of psychotropic or CNS-altering medications within 3 months of screening
  • Hypertension or tachycardia

Arms & Interventions

Placebo While Awake, Placebo While Asleep

Placebo Comparator

Participants in this group will receive placebo (saline) by intravenous (IV) infusion while awake and placebo by IV infusion while asleep during an overnight dosing visit. All participants will also receive oral clonidine prior to dosing to support sleep during the overnight visit.

Intervention: Clonidine (Drug)

Placebo While Awake, Psilocybin While Asleep

Experimental

Participants in this group will receive placebo (saline) by intravenous (IV) infusion while awake and psilocybin by IV infusion while asleep during an overnight dosing visit. All participants will also receive oral clonidine prior to dosing to support sleep during the overnight visit.

Intervention: Psilocybin (Drug)

Placebo While Awake, Psilocybin While Asleep

Experimental

Participants in this group will receive placebo (saline) by intravenous (IV) infusion while awake and psilocybin by IV infusion while asleep during an overnight dosing visit. All participants will also receive oral clonidine prior to dosing to support sleep during the overnight visit.

Intervention: Saline Placebo (Other)

Placebo While Awake, Placebo While Asleep

Placebo Comparator

Participants in this group will receive placebo (saline) by intravenous (IV) infusion while awake and placebo by IV infusion while asleep during an overnight dosing visit. All participants will also receive oral clonidine prior to dosing to support sleep during the overnight visit.

Intervention: Saline Placebo (Other)

Psilocybin While Awake, Placebo While Asleep

Experimental

Participants in this group will receive psilocybin by intravenous (IV) infusion while awake and placebo (saline) by IV infusion while asleep during an overnight dosing visit. All participants will also receive oral clonidine prior to dosing to support sleep during the overnight visit.

Intervention: Saline Placebo (Other)

Placebo While Awake, Psilocybin While Asleep

Experimental

Participants in this group will receive placebo (saline) by intravenous (IV) infusion while awake and psilocybin by IV infusion while asleep during an overnight dosing visit. All participants will also receive oral clonidine prior to dosing to support sleep during the overnight visit.

Intervention: Clonidine (Drug)

Psilocybin While Awake, Placebo While Asleep

Experimental

Participants in this group will receive psilocybin by intravenous (IV) infusion while awake and placebo (saline) by IV infusion while asleep during an overnight dosing visit. All participants will also receive oral clonidine prior to dosing to support sleep during the overnight visit.

Intervention: Clonidine (Drug)

Psilocybin While Awake, Placebo While Asleep

Experimental

Participants in this group will receive psilocybin by intravenous (IV) infusion while awake and placebo (saline) by IV infusion while asleep during an overnight dosing visit. All participants will also receive oral clonidine prior to dosing to support sleep during the overnight visit.

Intervention: Psilocybin (Drug)

Outcomes

Primary Outcomes

Change in Warwick Edinburgh Mental Wellbeing Scale (WEMWBS) score: Psilocybin Awake versus Asleep

Time Frame: Baseline 2 (Day 0) to post-dosing Day 29

WEMWBS is a 14-item survey scored on a 5 point likert scale. The total range in scores is from 14 to 70 where higher scores indicate better mental wellbeing. Reported here for psilocybin administered while awake to psilocybin administered while asleep.

Change in Warwick Edinburgh Mental Wellbeing Scale (WEMWBS) score: Psilocybin Asleep versus Placebo Asleep

Time Frame: Baseline 2 (Day 0) to post-dosing Day 29

WEMWBS is a 14-item survey scored on a 5 point likert scale. The total range in scores is from 14 to 70 where higher scores indicate better mental wellbeing. Reported here for psilocybin administered while asleep to and placebo administered while asleep.

Secondary Outcomes

  • Change in Brief Experiential Avoidance Questionnaire (BEAQ): Psilocybin Awake versus Asleep(Baseline 2 (Day 0) to post-dosing Day 29)
  • Change in Brief Experiential Avoidance Questionnaire (BEAQ): Psilocybin Asleep versus Placebo Asleep(Baseline 2 (Day 0) to post-dosing Day 29)
  • Change in Watts Social Connectedness (WCS) Scale: Psilocybin Awake versus Asleep(Baseline 2 (Day 0) to post-dosing Day 29)
  • Change in Watts Social Connectedness (WCS) Scale: Psilocybin Asleep versus Placebo Asleep(Baseline 2 (Day 0) to post-dosing Day 29)
  • Persisting Effects Questionnaire (PEQ): Psilocybin Awake versus Asleep(post-dosing Day 29)
  • Persisting Effects Questionnaire (PEQ): Psilocybin Asleep versus Placebo Asleep(post-dosing Day 29)

Investigators

Sponsor Class
Other
Responsible Party
Sponsor

Study Sites (1)

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