Independent directory Public ClinicalTrials.gov records United States
ClinicalTrials.gov record
Terminated Phase 2 Interventional Results available

Nitrous Oxide for PTSD

ClinicalTrials.gov ID: NCT04378426

Public ClinicalTrials.gov record NCT04378426. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Sep 6, 2026, 7:44 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official title

Nitrous Oxide for Posttraumatic Stress Disorder (PTSD): A Phase IIa Trial

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

Post-traumatic stress disorder (PTSD) seriously disrupts the lives of many Veterans. Current first-line treatments, serotonin reuptake inhibitors or prolonged exposure therapy, take weeks to months to bring meaningful improvement, leaving Veterans experiencing prolonged suffering. A promising new treatment approach for rapidly reducing PTSD symptoms is nitrous oxide, an inhalation anesthetic and putative glutamate modulator that diminishes depression symptoms within 1 day and has limited side effects. If shown to be similarly effective in PTSD, nitrous oxide may add dramatically to the treatment armamentarium by bringing rapid symptom decrease before longer-term therapies take hold. The proposed projects test the efficacy of nitrous oxide in relieving Veteran's PTSD symptoms and, in parallel, explore how nitrous oxide may modify cognitive and pain outcomes.

Study identification

NCT ID
NCT04378426
Recruitment status
Terminated
Study type
Interventional
Phase
Phase 2
Enrollment
1 participant

Conditions and interventions

Conditions

Interventions

Drug

Eligibility (public fields only)

Age range
18 Years to 65 Years
Sex
All
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Oct 6, 2021
Primary completion
Aug 30, 2022
Completion
Aug 30, 2022
Last update posted
Mar 2, 2023

2021 – 2022

United States locations

U.S. sites
1
U.S. states
1
U.S. cities
1
Facility City State ZIP Site status
VA Palo Alto Health Care System, Palo Alto, CA Palo Alto California 94304-1290

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04378426, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Mar 2, 2023 · Synced Sep 6, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete protocol, eligibility criteria, and contact information for NCT04378426 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →