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Fasedienol

Phase 3

Social Anxiety Disorder | Small molecule | Psychiatry |Vistagen Therapeutics, Inc.|Trials Updated: May 22, 2026

Fasedienol target and mechanism

ModalitySmall molecule

Also known as Fasedienol Nasal Spray, Fasedienol Nasal Spray - Fasedienol Nasal Spray, Fasedienol- Fasedienol

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindCONTROLLED
Total Trials3
Total Enrollment536

FDA Designations

No designations recorded

Fasedienol clinical trials

Fasedienol · 3 trials · 2 indications

Phase 3 2Phase 2 1
NCT06615557Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults With Social Anxiety Disorder (PALISADE-4)Social Anxiety Disorder (SAD)
ACTIVE NOT_RECRUITING238 Analytics
NCT06358651Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults With Social Anxiety Disorder (PALISADE-3)Social Anxiety Disorder
ACTIVE NOT_RECRUITING238 Analytics
PHASE3ACTIVE NOT_RECRUITING
Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults With Social Anxiety Disorder (PALISADE-4)
Social Anxiety Disorder (SAD)Unlock trial analytics
PHASE3ACTIVE NOT_RECRUITING
Fasedienol Nasal Spray for the Acute Treatment of Anxiety in Adults With Social Anxiety Disorder (PALISADE-3)
Social Anxiety DisorderUnlock trial analytics

Study Endpoints

Primary Endpoints

Subjective Units of Distress Scale (SUDS)
7 days (Visit 2 to Visit 3)

The SUDS is a patient self-rated scale that is scored in the range of 0 to 100 (operationalized for participants in this study as 0=totally relaxed or no anxiety and 100=highest distress or anxiety ever felt).

Secondary Endpoints

Global Impression Scale of Improvement (CGI-I)
7 days (Visit 2 to Visit 3)
Patient Global Impression of Change (PGI-C)
7 days (Visit 2 to Visit 3)
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Study Design & Arms

AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Fasedienol Nasal SprayEXPERIMENTAL -
Placebo Nasal SprayEXPERIMENTAL -
Fasedienol Nasal Spray (single dose)EXPERIMENTALTwenty minutes prior to the PSC, subjects will receive one dose of Fasedienol Nasal Spray followed by one dose of Placebo Nasal Spray, separated by 10-minutes in between the two doses.
Fasedienol Nasal Spray (repeat dose)EXPERIMENTALTwenty minutes prior to the PSC, subjects will receive one dose of Fasedienol Nasal Spray followed by a second dose of Fasedienol Nasal Spray, separated by 10-minutes in between the two doses.

Interventions

NameTypeDescription
Fasedienol Nasal SprayDRUGNasal spray delivered 20 minutes before the PSC
Placebo Nasal SprayDRUGNasal spray delivered 20 minutes before the PSC
Fasedienol Nasal Spray - Placebo Nasal SprayDRUGTwenty minutes prior to the PSC, subjects will receive one dose of Fasedienol Nasal Spray followed by one dose of Placebo Nasal Spray, separated by 10-minutes in between the two doses.
Fasedienol Nasal Spray - Fasedienol Nasal SprayDRUGTwenty minutes prior to the PSC, subjects will receive one dose of Fasedienol Nasal Spray followed by a second dose of Fasedienol Nasal Spray, separated by 10-minutes in between the two doses.
Placebo Nasal Spray - Placebo Nasal SprayDRUGTwenty minutes prior to the PSC, subjects will receive one dose of Placebo Nasal Spray followed by a second dose of Placebo Nasal Spray, separated by 10-minutes between the two doses.
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Eligibility Criteria

Age Range18 Years to 65 Years
SexALL
Healthy VolunteersNo
Study Sites26

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 of Mental Disorders, 5th Edition, and confirmed ...

Countries:United States
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Frequently asked questions about Fasedienol

What is Fasedienol used for?

Fasedienol is an investigational nasal spray being developed for the acute treatment of anxiety in adults with social anxiety disorder. It is designed to be used as a rapid, as-needed treatment rather than a daily maintenance therapy. It has not been approved by the FDA and remains in clinical development.

Who is developing Fasedienol?

Fasedienol is being developed by Vistagen Therapeutics, Inc., which trades on the Nasdaq under the ticker VTGN. The company is running the PALISADE Phase 3 program in adults with social anxiety disorder, along with an additional earlier-stage clinical trial of the nasal spray.

What phase is Fasedienol in?

Fasedienol is in Phase 3 clinical development for social anxiety disorder. Two Phase 3 trials, PALISADE-3 and PALISADE-4, are active but no longer recruiting participants, and a separate Phase 2 trial is currently recruiting. Fasedienol is investigational and has not received FDA approval.

What clinical trials is Fasedienol in?

Fasedienol is being studied in three registered trials: NCT06358651 (PALISADE-3, Phase 3), NCT06615557 (PALISADE-4, Phase 3), and NCT06809179 (Phase 2). All three enroll adults 18 years and older with social anxiety disorder in the United States, and together they plan to enroll 536 participants.

Is Fasedienol the same as Fasedienol Nasal Spray?

Yes. Fasedienol Nasal Spray is another name for fasedienol, the same investigational asset developed by Vistagen Therapeutics. The two names refer to the identical product, which is administered intranasally and is being studied for the acute treatment of anxiety in adults with social anxiety disorder.

How is Fasedienol administered in its clinical trials?

Fasedienol is given as a nasal spray in its clinical trials. The Phase 3 PALISADE-3 and PALISADE-4 studies and the Phase 2 trial NCT06809179 are randomized, double-blind, controlled trials evaluating the nasal spray for acute treatment of anxiety in adults with social anxiety disorder.