Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults With Social Anxiety Disorder (PALISADE-3)

Last updated: November 24, 2025
Sponsor: VistaGen Therapeutics, Inc.
Overall Status: Active - Not Recruiting

Phase

3

Condition

Anxiety Disorders

Social Phobia

Panic Disorders

Treatment

Placebo Nasal Spray

Fasedienol Nasal Spray

Clinical Study ID

NCT06358651
PH94B-CL042
  • Ages 18-65
  • All Genders

Study Summary

This U.S. Phase 3 clinical trial is designed to evaluate the efficacy, safety, and tolerability of the acute intranasal (i.n.) administration of Fasedienol Nasal Spray (fasedienol) (3.2 µg) to relieve symptoms of acute anxiety in adult subjects ages 18 through 65 with Social Anxiety Disorder induced by a public speaking challenge (PSC) in a clinical setting. In addition, safety and tolerability of i.n. administration of 3.2 µg of fasedienol, as-needed, up to 6 times per day for up to 12 months, will be assessed in those subjects who complete PALISADE-3 and choose to enter the distinct open-label extension phase of the study.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • Written informed consent provided prior to conducting any study specific assessment.

  • Male and female adults, 18 through 65 years of age, inclusive.

  • Current diagnosis of SAD as defined in the Diagnostic and Statistical Manual ofMental Disorders, 5th Edition (DSM-5), and confirmed by the Mini-InternationalNeuropsychiatric Interview (MINI).

  • Clinician-rated Liebowitz Social Anxiety Scale (LSAS) total score ≥70 at Screening (Visit 1).

  • Clinician-rated Hamilton Depression Rating Scale (HAM-D) (17-items) total score <16.

  • Female subjects of childbearing potential must be able to commit to the consistentand correct use of an effective method of birth control throughout the study

  • Subjects must have normal olfactory function

Exclusion

Exclusion Criteria:

  • Any history of bipolar disorder (I or II), schizophrenia, schizoaffective disorder,psychosis, anorexia or bulimia, premenstrual dysphoric disorder, autism spectrumdisorder, or obsessive-compulsive disorder.

  • Any other current principal or personality disorder (previously known as Axis I orAxis II disorders), except for specific phobias or generalized anxiety disorder,provided that these are not the primary diagnosis.

  • Subjects who meet criteria for moderate or severe alcohol use disorder within the 1year prior to study entry, or any use of illicit substances or tetrahydrocannabinol ("THC") within 2 months prior to study entry.

  • In the opinion of the investigator, the subject has a significant risk for suicidalbehavior during the course of their participation in the study, or the subject isconsidered to be an imminent danger to themself or others.

  • Clinically significant nasal pathology or history of significant nasal trauma, nasalsurgery, total anosmia, or nasal septum perforation that may have damaged the nasalchemosensory epithelium.

  • Two or more documented failed adequate treatment trials with a registered medicationapproved for SAD.

  • Currently receiving cognitive-behavioral therapy (CBT), exposure therapy, oracceptance and commitment therapy.

  • Subjects taking psychotropic medications within 30 days before Visit 2

  • Use of any over-the-counter product, prescription product, off-label treatment,cannabidiol ("CBD"), or herbal preparation for treatment of the symptoms of anxietyor social anxiety within 30 days before Visit 2.

  • Prior participation in a clinical trial involving fasedienol.

  • Participation in any other clinical trial within the last 30 days or during thecourse of the current trial.

  • Subjects with a positive urine drug screen.

  • Women who have a positive urine pregnancy test.

  • Women who are currently breastfeeding are not eligible unless they are willing tostop breastfeeding for the duration of the study.

  • Subjects who have tested positive and/or have exhibited symptoms consistent withSARS-CoV-2 infection during the 4 weeks prior to Screening (Visit 1).

  • Any clinically significant medical history or findings as determined by theInvestigator that could interfere with the objectives of the study or put theparticipant at risk.

Study Design

Total Participants: 238
Treatment Group(s): 2
Primary Treatment: Placebo Nasal Spray
Phase: 3
Study Start date:
March 28, 2024
Estimated Completion Date:
October 31, 2026

Connect with a study center

  • Vistagen Clinical Site

    Pheonix, Arizona 85012
    United States

    Site Not Available

  • Vistagen Clinical Site

    Phoenix, Arizona 85012
    United States

    Site Not Available

  • Vistagen Clinical Site

    Phoenix 5308655, Arizona 5551752 85012
    United States

    Site Not Available

  • Vistagen Clinical Site

    Fayetteville, Arkansas 72703
    United States

    Site Not Available

  • Vistagen Clinical Site

    Little Rock, Arkansas 72211
    United States

    Site Not Available

  • Vistagen Clinical Site

    Fayetteville 4110486, Arkansas 4099753 72703
    United States

    Site Not Available

  • Vistagen Clinical Site

    Little Rock 4119403, Arkansas 4099753 72211
    United States

    Site Not Available

  • Vistagen Clinical Site

    Lafayette, California 94549
    United States

    Site Not Available

  • Vistagen Clinical Site

    Oceanside, California 92056
    United States

    Site Not Available

  • Vistagen Clinical Site

    Sherman Oaks, California 91403
    United States

    Site Not Available

  • Vistagen Clinical Site

    Lafayette 5364226, California 5332921 94549
    United States

    Site Not Available

  • Vistagen Clinical Site

    Oceanside 5378771, California 5332921 92056
    United States

    Site Not Available

  • Vistagen Clinical Site

    Sherman Oaks 5395244, California 5332921 91403
    United States

    Site Not Available

  • Vistagen Clinical Site

    Denver, Colorado 80209
    United States

    Site Not Available

  • Vistagen Clinical Site

    Denver 5419384, Colorado 5417618 80209
    United States

    Site Not Available

  • Vistagen Clinical Site

    Cromwell, Connecticut 06416
    United States

    Site Not Available

  • Vistagen Clinical Site

    Cromwell 4832121, Connecticut 4831725 06416
    United States

    Site Not Available

  • Vistagen Clinical Site

    Jacksonville, Florida 32256
    United States

    Site Not Available

  • Vistagen Clinical Site

    Lakeland, Florida 33803
    United States

    Site Not Available

  • Vistagen Clinical Site

    Orlando, Florida 32801
    United States

    Site Not Available

  • Vistagen Clinical Site

    West Palm Beach, Florida 33407
    United States

    Site Not Available

  • Vistagen Clinical Site

    Jacksonville 4160021, Florida 4155751 32256
    United States

    Site Not Available

  • Vistagen Clinical Site

    Lakeland 4161438, Florida 4155751 33803
    United States

    Site Not Available

  • Vistagen Clinical Site

    Orlando 4167147, Florida 4155751 32801
    United States

    Site Not Available

  • Vistagen Clinical Site

    West Palm Beach 4177887, Florida 4155751 33407
    United States

    Site Not Available

  • Vistagen Clinical Site

    Chicago, Illinois 60612
    United States

    Site Not Available

  • Vistagen Clinical Site

    Chicago 4887398, Illinois 4896861 60612
    United States

    Site Not Available

  • Vistagen Clinical Site

    Overland Park, Kansas 66210
    United States

    Site Not Available

  • Vistagen Clinical Site

    Overland Park 4276873, Kansas 4273857 66210
    United States

    Site Not Available

  • Vistagen Clinical Site

    Baltimore, Maryland 21208
    United States

    Site Not Available

  • Vistagen Clinical Site

    Baltimore 4347778, Maryland 4361885 21208
    United States

    Site Not Available

  • Vistagen Clinical Site

    Boston, Massachusetts 02131
    United States

    Site Not Available

  • Vistagen Clinical Site

    Boston 4930956, Massachusetts 6254926 02131
    United States

    Site Not Available

  • Vistagen Clinical Site

    Saint Charles, Missouri 63304
    United States

    Site Not Available

  • Vistagen Clinical Site

    St. Charles, Missouri 63304
    United States

    Site Not Available

  • Vistagen Clinical Site

    Saint Charles 4406831, Missouri 4398678 63304
    United States

    Site Not Available

  • Vistagen Clinical Site

    Las Vegas, Nevada 89119
    United States

    Site Not Available

  • Vistagen Clinical Site

    Las Vegas 5506956, Nevada 5509151 89119
    United States

    Site Not Available

  • Vistagen Clinical Site

    New York, New York 10128
    United States

    Site Not Available

  • Vistagen Clinical Site

    New York 5128581, New York 5128638 10128
    United States

    Site Not Available

  • Vistagen Clinical Site

    Media, Pennsylvania 19063
    United States

    Site Not Available

  • Vistagen Clinical Site

    Media 4559575, Pennsylvania 6254927 19063
    United States

    Site Not Available

  • Vistagen Clinical Site

    Memphis, Tennessee 38119
    United States

    Site Not Available

  • Vistagen Clinical Site

    Memphis 4641239, Tennessee 4662168 38119
    United States

    Site Not Available

  • Vistagen Clinical Site

    Fort Worth, Texas 76104
    United States

    Site Not Available

  • Vistagen Clinical Site

    Fort Worth 4691930, Texas 4736286 76104
    United States

    Site Not Available

  • Vistagen Clinical Site

    Draper, Utah 84020
    United States

    Site Not Available

  • Vistagen Clinical Site

    Draper 5774001, Utah 5549030 84020
    United States

    Site Not Available

  • Vistagen Clinical Site

    Everett, Washington 98201
    United States

    Site Not Available

  • Vistagen Clinical Site

    Everett 5793933, Washington 5815135 98201
    United States

    Site Not Available

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