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ClinicalTrials.gov public records Last synced Sep 12, 2026, 3:11 PM EDT

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Showing 1–13 of 13 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Completed Not applicable Interventional Accepts healthy volunteers

Reinforcing Effects of Brief Exposures to Nitrous Oxide - 8

NCT00000256
Conditions
Opioid-Related Disorders, Substance-Related Disorders
Interventions
20% N2O, 40% N2O, 60% N2O, 80% N2O
Drug
Lead sponsor
University of Chicago
Other
Eligibility
22 Years to 34 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1995 – 1996
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Cardiovascular Abnormalities
Interventions
B12-Folic Acid, nitrous oxide, Nitrous oxide (NO) and placebo, Placebo, oxygen nitrogen
Drug · Other
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
St Louis, Missouri
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nitrous Oxide for Pain Management of First Trimester Surgical Abortion

NCT02096575
Conditions
Abortion in First Trimester
Interventions
Nitrous oxide administration
Other
Lead sponsor
University of New Mexico
Other
Eligibility
18 Years and older · Female only
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Albuquerque, New Mexico
Withdrawn Not applicable Interventional Accepts healthy volunteers

Comparing Sedara to Butorphanol in Early Labor

NCT01636999
Conditions
Labor Pain
Interventions
50% Nitrous Oxide/50% Oxygen
Drug
Lead sponsor
West Penn Allegheny Health System
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Not listed Phase 4 Interventional Accepts healthy volunteers

Safety and Efficacy of Intranasal Dexmedetomidine

NCT02985697
Conditions
Safety and Efficacy of Intranasal Dexmedetomidine
Interventions
Dexmedetomidine, Midazolam Hydrochloride, Nitrous Oxide
Drug
Lead sponsor
Bon Secours Pediatric Dental Associates
Other
Eligibility
3 Years to 6 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Richmond, Virginia
Conditions
Migraine, Pain
Interventions
Nitrous Oxide
Drug
Lead sponsor
Children's Hospitals and Clinics of Minnesota
Other
Eligibility
8 Years to 18 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Minneapolis, Minnesota
Conditions
Obsessive-Compulsive Disorder
Interventions
Nitrous Oxide, Nitrogen
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Stanford, California
Completed Not applicable Interventional Results available

Addition of Nitrous Oxide and Its Effects on Depth of Anesthesia

NCT00717574
Conditions
Deep Sedation, Anesthesia, General
Interventions
Sevoflurane group, Propofol group
Drug
Lead sponsor
University of Oklahoma
Other
Eligibility
18 Years to 55 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Oklahoma City, Oklahoma
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Antidepressant Effects of Nitrous Oxide

NCT05357040
Conditions
Major Depressive Disorder, Treatment Resistant Depression
Interventions
Nitrous oxide gas for inhalation, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Recruiting Phase 2 Interventional Accepts healthy volunteers

Effect of Nitrous Oxide on Aggression.

NCT06118567
Conditions
Intermittent Explosive Disorder
Interventions
Nitrous oxide, Room Air
Drug
Lead sponsor
Ohio State University
Other
Eligibility
21 Years to 55 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Conditions
Conscious Sedation, Simple Lacerations Less Than 4 cm, Lumbar Punctures, Minor Incision Drainage of Abscesses Not Requiring Extensive Debridement
Interventions
Nitrous Oxide, Midazolam
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
2 Years to 17 Years
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
1
States / cities
Aurora, Colorado
Withdrawn Phase 2 Interventional Accepts healthy volunteers

Nitrous Oxide as Treatment for Fibromyalgia

NCT05357066
Conditions
Fibromyalgia, Central Neuropathic Pain
Interventions
Nitrous oxide gas for inhalation, Placebo
Drug
Lead sponsor
University of Chicago
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Chicago, Illinois
Conditions
Emergence Agitation
Interventions
Depth of anesthesia
Other
Lead sponsor
Duke University
Other
Eligibility
2 Years to 8 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Durham, North Carolina