Clinical trial Recruiting at 1 site Phase1; Phase2 Interventional Ages 18 to 60

Single dose ayahuasca in adults with psychogenic non-epileptic seizures

Official title: Effects of a Sigle Dose of Ayahuasca in Patients With Psychogenic Non-epileptic Seizures: an Open Label Clinical Trial

Run by University of Sao Paulo · NCT07747324 · Data updated 2026-11-12

This open-label study tests whether a single dose of ayahuasca is safe and what effects it has in adults with psychogenic non-epileptic seizures who are under care.

Quick facts

PhasePhase1; Phase2
Study typeInterventional
Ages18 Years to 60 Years
SexAll
Enrollment15 (estimated)
SponsorUniversity of Sao Paulo
Academic / other
Locations1 site (Ribeirão Preto, São Paulo)
StatusRecruiting
StartedJuly 1, 2026
Main results expectedAugust 30, 2027
Study endsAugust 30, 2027
Registry record updatedAugust 5, 2026
Trial IDNCT07747324 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Adults 18–60 with documented PNES (VEEG-confirmed) and no epilepsy, currently in outpatient follow-up, willing to taper and discontinue certain psychotropic medications.

Probably not a fit

Individuals with ongoing active psychotropic treatment that cannot be safely tapered, or with epilepsy, may not experience benefit from this intervention.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study will administer one dose of ayahuasca to adults aged 18 to 60 with documented PNES and no epilepsy. Participants must gradually reduce and discontinue current psychotropic medications to avoid interactions. The trial is open-label and combines Phase 1 and Phase 2 elements to assess safety and potential clinical effects in an outpatient setting at Ribeirão Preto Medical School, University of Sao Paulo. Outcomes will focus on safety and any changes in seizure frequency or related symptoms. Results may inform future research on psychoactive therapies for PNES.

Why it matters

Potential benefit: If successful, participants may experience improved symptom control or insights into PNES management following the intervention.

How similar studies have gone: Prior research on ayahuasca for PNES or related disorders is limited, making this a novel/early exploratory approach.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients aged 18 to 60 with documented PNES (confirmed via VEEG), without a diagnosis of comorbid epilepsy, and currently receiving follow-up care at outpatient clinics. To enroll in the study, patients must undergo a gradual reduction and discontinuation of any psychotropic medications (antidepressants, antipsychotics, benzodiazepines, or mood stabilizers/anticonvulsants) they are currently taking, in order to avoid drug interactions with-or influence on-the effects of ayahuasca.

Exclusion Criteria:

* Patients who have not experienced psychogenic seizures in the last 3 months; patients diagnosed with epilepsy; patients who refuse to reduce or discontinue their current psychotropic medications; patients with a history of prior ayahuasca use; patients with a history of substance use disorder; patients who refuse to sign the Informed Consent Form; patients with schizophrenia or other psychotic disorders and/or impaired reality testing; and pregnant or breastfeeding women.

Where it's running

  • Ribeirão Preto Medical School
    Ribeirão Preto, São Paulo, Brazil
    Recruiting

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.