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Psilocybin's brain effects in migraine under the microscope

NCT ID NCT06464367

Knowledge-focused Sponsor: Yale University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jul 13, 2026 · Last updated Jul 14, 2026 · Updated 1 time

Summary

This study investigates why psilocybin may reduce headache burden after just a few doses. Researchers will measure brain connectivity, synaptic density, inflammation markers, and sleep patterns in migraine patients and healthy volunteers before and after a single dose of psilocybin or an active placebo. The goal is to uncover the biological mechanisms behind psilocybin's potential long-lasting effects on migraine.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
psilocybin
What this could lead to
If the brain changes observed after psilocybin are linked to lasting headache relief, this could point toward new treatments for migraine.
What could go wrong
This is a very early, small study focused on understanding mechanisms, not proving effectiveness. The results may not lead to a treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Early phase 1

The earliest testing in people: a first look at safety, in a very small group.

Participants

About 50 people

The number the study aims to enrol. It can still change while the study runs.

Started

May 2025

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

21 to 70 years

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion criteria: * Age 21 to 70 (inclusive) * Migraine disease per ICHD-3 criteria (for migraine participants) OR Healthy control patient Exclusion criterion * Unstable medical condition or serious nervous system pathology * Pregnant, breastfeeding, lack of adequate birth control * Psychotic or manic disorder * Substance abuse in the prior 3 months * Use of classic psychedelics (e.g., psilocybin, LSD, mescaline) in the past 6 months * Use of cannabis or other THC products in the prior 2 weeks * Urine toxicology positive to drugs of abuse * The use of triptans (e.g., sumatriptan) or ditans (e.g., lasmiditan) more than twice weekly on average * Use of serotonergic preventive therapies (i.e., taken chronically; amitriptyline, fluoxetine, imipramine, cyproheptadine) in the past 6 weeks * Use of preventive or transitional treatments that produce spikes and waning of symptom relief (e.g., botulinum toxin, calcitonin gene-related peptide system targeting antibodies, peripheral nerve or ganglion blocks, chiropractic manipulation) * History of a bleeding disorder or are currently taking anticoagulants (e.g., warfarin, enoxaparin, dabigatran, apixaban). * Use of non-steroidal anti-inflammatory drugs (NSAIDs; e.g., ibuprofen, naproxen) in the 7 days before PET scan and 7 days after PET scan.

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Conditions

The condition(s) this trial relates to.

Inflammation migraine disorder

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Migraine

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • VA Connecticut Healthcare System

    RECRUITING

    West Haven, Connecticut, 06516, United States

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