NCT06464367 · Yale University
Mechanistic Studies of Psilocybin in Headache Disorders
What this study is about
In previous clinical trial work, the investigators observed lasting reductions in headache burden after limited dosing of psilocybin. This purpose of this study is to examine potential sources for this observed effect.
View original scientific description
In previous clinical trial work, the investigators observed lasting reductions in headache burden after limited dosing of psilocybin. This purpose of this study is to examine potential sources for this observed effect. This study will measure brain resting state functional connectivity (fMRI), central synaptic density (SV2A PET), peripheral markers of inflammation, circadian rhythm (actigraphy), and sleep (sleep EEG) in both migraine and healthy control participants before and one week after the administration of psilocybin or an active control agent.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Age 21 to 70 (inclusive)
- Migraine disease per ICHD-3 criteria (for migraine participants) OR Healthy control patient
Exclusion criteria
- 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.
Where
- West Haven, Connecticut
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Jul 24, 2025 · Source of record for eligibility and locations