Status:

NOT_YET_RECRUITING

Microdosing LSD in Women With Premenstrual Disorders

Lead Sponsor:

Friederike Holze

Conditions:

PMS

PMDD

Eligibility:

FEMALE

18-45 years

Phase:

NA

Brief Summary

The investigators aim to investigate the role of the serotonin 2A receptor in women with premenstrual disorders. This study uses a double-blind, randomized, controlled design with 3 arms: Intervention...

Detailed Description

Premenstrual disorders (premenstrual syndrome (PMS) and Premenstrual Dysphoric Disorder (PMDD)) affect many women (20 - 30% for PMS and 1.2 - 6.4% for PMDD) and are associated with affective symptoms,...

Eligibility Criteria

Inclusion

  • Inclusion crtieria:
  • Between 18-45 years.
  • Are menstruating and have cycles with a duration between 21 - 35 days.
  • Meet DSM-V criteria for PMDD or criteria for severe PMS with daily ratings over 2 cycles to confirm luteal symptoms.
  • For PMDD, participants must have a minimal average luteal phase score of mild (≥3 on a 6-point scale) for at least 5 Symptoms on the DRSP including 1 mood symptom during the 5 most symptomatic of the final 7 luteal phase days and the first 2 days of menses onset, and the average follicular phase score must not be \>2 on these same items.
  • For severe PMS, participants must have a minimal average luteal phase score of mild (≥3 on a 6-point scale) for at least 4 Symptoms on the DRSP including 1 mood symptom, during the 5 most symptomatic of the final 7 luteal phase days and the first 2 days of menses onset, and the average follicular phase core must not be \>2 on these same items.
  • Have reported PMDD/PMS symptoms for the majority of menstrual cycles (\>9 of 12) during the year prior to screening.
  • Sufficient understanding of the German language
  • Sufficient understanding of the study procedures and risks associated with the study.
  • Participants must be willing to adhere to the study procedures and sign the consent form.
  • Willing not to drive or operate heavy machinery during the acute treatment phases of the study.
  • Willing to refrain from more than 7 standard alcoholic drinks a week, more than 10 cigarettes a day, and any illicit substances.
  • Willing to use effective contraceptive measures throughout study participation.
  • Exclusion Criteria:
  • Known hypersensitivity to LSD
  • Current treatment for PMS/PMDD
  • Use of an oral hormonal contraceptive \< 6 months.
  • Past or present bipolar or psychotic disorder, including depressive disorder with psychotic features.
  • First degree relative with a psychotic disorder.
  • Significant prodromal psychotic symptoms (Prodromal Questionnaire-16 symptoms ≥ 6).
  • Borderline personality disorder.
  • Current post-traumatic stress disorder.
  • Pregnant or breastfeeding
  • Planned pregnancy.
  • Current or recent history of significant suicide ideation or suicide behavior within the past 6 months.
  • Current substance use disorder (\< 12 months) other than tobacco smoking.
  • Other illness that excludes repeated LSD administration or requires interfering medication.
  • Participation in another clinical trial (currently or within the last 30 days)

Exclusion

    Key Trial Info

    Start Date :

    October 1 2025

    Trial Type :

    INTERVENTIONAL

    Allocation :

    ESTIMATED

    End Date :

    January 1 2030

    Estimated Enrollment :

    150 Patients enrolled

    Trial Details

    Trial ID

    NCT07189299

    Start Date

    October 1 2025

    End Date

    January 1 2030

    Last Update

    September 23 2025

    Active Locations (1)

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    Page 1 of 1 (1 locations)

    1

    Clinical Pharmacology & Toxicology, University Hospital Basel

    Basel, Canton of Basel-City, Switzerland, 4056