CI

At a glance

ClinicalIndex Comparison Record
Phase 2Completed· 24 enrolled
Drug / intervention
Nitrous Oxide 25% +2 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03283670
NCT03283670Phase 2Completed

Inhaled Nitrous Oxide for Treatment-Resistant Depression: Optimizing Dosing Strategies

Washington University School of Medicine·interventional·Posted Sep 14, 2017·Updated Apr 4, 2022

In Brief

A Phase 2 clinical trial evaluating Nitrous Oxide 25%, Nitrous Oxide 50%, and 1 other intervention for Depressive Disorder, Major and Depressive Disorder, Treatment-Resistant. Completed, enrolled 24 participants across 1 site.

Detailed Summary

The purpose of the study aims to determine whether different concentrations of nitrous oxide (N2O) have different antidepressant effects for adults with treatment-resistant major depression.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesUnited States

Timeline

Phase 2CompletedFinished
2017201820192020202120222023202420252026
First PostedSep 14, 2017
Enrollment StartNov 22, 2016
Primary CompletionFeb 18, 2020
TodayJul 2, 2026
Enrollment to primary: 3.2 yearsPosted 8.8 years ago

Interventions

Nitrous Oxide 25%drug

Nitrous oxide, an odorless, colorless gas typically used as an induction agent for general anesthesia or for dental sedation, is a known N-methyl-D-aspartate (NMDA) antagonist. It will be given at a concentration of 25% nitrous oxide/50% oxygen/25% nitrogen.

Nitrous Oxide 50%drug

Nitrous oxide, an odorless, colorless gas typically used as an induction agent for general anesthesia or for dental sedation, is a known N-methyl-D-aspartate (NMDA) antagonist. It will be given at a concentration of 50% nitrous oxide/50% oxygen.

Placebo Gasdrug

Placebo gas given at 50% nitrogen \[inert\]/50% oxygen.