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Showing 1–24 of 391 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Nitric Oxide Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of Endothelin and L-Arginine on Racial Differences in Vasoconstriction

NCT03679780
View directory record Official record
Conditions
Cardiovascular Diseases, Cardiovascular Risk Factor, Vasoconstriction
Interventions
BQ-788, BQ-123, L-Arginine, NG Nitro L Arginine Methyl Ester, Sodium Nitroprusside, Lactated Ringer's
Drug
Lead sponsor
The University of Texas at Arlington
Other
Eligibility
18 Years to 35 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Arlington, Texas
Source: ClinicalTrials.gov public record
Updated Jun 10, 2024 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Phase 2 Interventional Results available

Rilonacept to Improve Artery Function in Patients With Atherosclerosis

NCT00417417
View directory record Official record
Conditions
Coronary Artery Disease, Atherosclerosis, Inflammation, Endothelial Dysfunction
Interventions
Rilonacept, Placebo
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 29, 2012 · Synced Sep 2, 2026, 6:42 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Real World and Genomic Data Based Asthma Insight Through Network Analysis

NCT06623435
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
1,075 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2025
U.S. locations
5
States / cities
Denver, Colorado • New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Phase 3 Interventional Results available

Trial of Late Surfactant for Prevention of Bronchopulmonary Dysplasia

NCT01022580
View directory record Official record
Conditions
Bronchopulmonary Dysplasia
Interventions
Infasurf surfactant (ONY, Inc.), Sham (No Treatment)
Drug
Lead sponsor
Roberta Ballard
Other
Eligibility
7 Days to 14 Days
Enrollment
511 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2016
U.S. locations
21
States / cities
Little Rock, Arkansas • Berkeley, California • Oakland, California + 15 more
Source: ClinicalTrials.gov public record
Updated May 12, 2021 · Synced Sep 2, 2026, 6:42 AM EDT
Terminated Phase 2 Interventional Results available

Nitric Oxide Gas Inhalation Therapy for Mild/Moderate COVID-19

NCT04305457
View directory record Official record
Conditions
Coronavirus Infections, Pneumonia, Viral, Acute Respiratory Distress Syndrome
Interventions
Nitric Oxide
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
2
States / cities
Shreveport, Louisiana • Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 22, 2026 · Synced Sep 2, 2026, 6:42 AM EDT
Completed No phase listed Observational

Observational Study of Obstructive Lung Disease (NOVELTY)

NCT02760329
View directory record Official record
Conditions
Asthma, COPD, Chronic Obstructive Pulmonary Disease
Interventions
Blood draw, Urine, Lung function measurements, Fractional Exhaled Nitric Oxide (FENO)
Procedure
Lead sponsor
AstraZeneca
Industry
Eligibility
12 Years to 130 Years
Enrollment
12,255 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
40
States / cities
Loma Linda, California • Long Beach, California • Roseville, California + 33 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2024 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Effects of Nitrite on Blood Vessel Dilation in Normal Volunteers

NCT00048477
View directory record Official record
Conditions
Nitric Oxide, Endothelium-Derived Relaxing Factor, Healthy
Interventions
L-NMMA and Sodium Nitrite
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 2, 2026, 6:42 AM EDT
Withdrawn Phase 4 Interventional

Early iNO for Oxidative Stress, Vascular Tone and Inflammation in Babies With Hypoxic Respiratory Failure

NCT01891500
View directory record Official record
Conditions
Persistent Fetal Circulation Syndrome, Hypertension, Pulmonary, of Newborn, Persistent, Persistent Pulmonary Hypertension of Newborn
Interventions
Inhaled nitric oxide, Nitrogen Gas, Crossover iNO
Drug
Lead sponsor
University of Florida
Other
Eligibility
30 Minutes to 48 Hours
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 6, 2020 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Phase 4 Interventional

Mometasone and Markers of Airway Inflammation

NCT00711165
View directory record Official record
Conditions
Asthma
Interventions
Placebo, Mometasone Furoate
Drug
Lead sponsor
Creighton University
Other
Eligibility
19 Years to 50 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Jul 7, 2008 · Synced Sep 2, 2026, 6:42 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Topical Irrigation Therapy for CRS

NCT02630472
View directory record Official record
Conditions
Rhinitis, Sinusitis
Interventions
Quinine Sulfate, Placebo
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 12, 2019 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Phase 2 Interventional Results available

Pilot Study About the Harmful Effects of Blood Storage on Overweight People and the Role of iNO in This Setting

NCT01529502
View directory record Official record
Conditions
Blood Transfusion, Endothelial Physiopathology, Nitric Oxide, Pulmonary Hypertension
Interventions
Red blood Cells auto-transfusion, Inhaled Nitric Oxide (iNO) administration
Procedure · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 60 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 21, 2017 · Synced Sep 2, 2026, 6:42 AM EDT
Terminated Phase 1Phase 2 Interventional

The Evaluation of Nitric Oxide Generating Lozenges on Outcome in Newly Diagnosed COVID-19 Patient of African American and Hispanic Origin

NCT04601077
View directory record Official record
Conditions
COVID-19
Interventions
Nitric Oxide lozenges, 30 mg, Placebo
Drug
Lead sponsor
Nitric Oxide Innovations LLC
Industry
Eligibility
50 Years to 85 Years
Enrollment
524 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Lake Bluff, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 5, 2022 · Synced Sep 2, 2026, 6:42 AM EDT
Withdrawn Phase 2 Interventional

iNOPulse for COVID-19

NCT04398290
View directory record Official record
Conditions
COVID-19, Hypoxemia, Hypoxemic Respiratory Failure
Interventions
Inhaled nitric oxide (iNO), Nitrogen gas, Oxygen gas
Drug
Lead sponsor
Roger Alvarez
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Aug 18, 2020 · Synced Sep 2, 2026, 6:42 AM EDT
Completed No phase listed Observational Results available

Use of FeNO to Identify Eosinophilic Inflammation in Patients Age 40 Years and Above With Chronic Obstructive Airways Disease

NCT01634620
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease (COPD)
Interventions
NIOX MINO® Instrument (09-1100)
Device
Lead sponsor
Aerocrine AB
Industry
Eligibility
40 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
2
States / cities
Chapel Hill, North Carolina • Sanford, North Carolina
Source: ClinicalTrials.gov public record
Updated Feb 11, 2014 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Phase 1 Interventional

Effects of Endotoxin in Normal Human Volunteers

NCT00001303
View directory record Official record
Conditions
Healthy, Lung Disease, Sepsis, Septic Shock
Interventions
Reference Endotoxin, Inhaled Nitric Oxide
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 45 Years
Enrollment
198 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1992 – 2018
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 4, 2018 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Not applicable Interventional

Nitric Oxide Supplementation in Argininosuccinic Aciduria

NCT02252770
View directory record Official record
Conditions
Argininosuccinic Aciduria, Argininosuccinate Lyase Deficiency, Urea Cycle Disorders
Interventions
Nitric oxide supplement, Placebo
Dietary Supplement
Lead sponsor
Baylor College of Medicine
Other
Eligibility
8 Years to 64 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 17, 2020 · Synced Sep 2, 2026, 6:42 AM EDT
Terminated Not applicable Interventional Results available

Effects of Exercise and Improved Nitric Oxide Bioavailability on Arteriovenous Fistula Maturation

NCT02164318
View directory record Official record
Conditions
End Stage Renal Disease
Interventions
Handgrip training, Nitroglycerin ointment
Other · Drug
Lead sponsor
Duke University
Other
Eligibility
12 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Phase 2 Interventional Results available

Nitric Oxide to Treat Pulmonary Embolism

NCT01939301
View directory record Official record
Conditions
Pulmonary Embolism
Interventions
Inhaled Nitric Oxide, Sham
Drug
Lead sponsor
Indiana University
Other
Eligibility
18 Years and older
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
4
States / cities
Indianapolis, Indiana • Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Oct 2, 2018 · Synced Sep 2, 2026, 6:42 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Prenatal Aspirin and Postpartum Vascular Function

NCT05653973
View directory record Official record
Conditions
Preeclampsia, Microvascular Function
Interventions
Acetylcholine, Endothelin-1
Drug
Lead sponsor
Anna Stanhewicz, PhD
Other
Eligibility
18 Years to 50 Years · Female only
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2027
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated May 30, 2025 · Synced Sep 2, 2026, 6:42 AM EDT
Completed Phase 2Phase 3 Interventional Accepts healthy volunteers Results available

Prevention of Low Blood Pressure in Persons With Tetraplegia

NCT00237770
View directory record Official record
Conditions
Hypotension, Spinal Cord Injury
Interventions
N-Nitro L-arginine-methylester (L-NAME), Head-up Tilt maneuver
Drug · Procedure
Lead sponsor
US Department of Veterans Affairs
Federal
Eligibility
18 Years to 65 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2010
U.S. locations
1
States / cities
The Bronx, New York
Source: ClinicalTrials.gov public record
Updated May 18, 2014 · Synced Sep 2, 2026, 6:42 AM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Antidepressant Therapy for Improved Blood Vessel Health After Preeclampsia

NCT07715669
View directory record Official record
Conditions
Preeclampsia, Endothelial Function
Interventions
Paroxetine Hydrochloride, Ascorbic acid (Vitamin C)
Drug
Lead sponsor
Anna Stanhewicz, PhD
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Jul 28, 2026 · Synced Sep 2, 2026, 6:42 AM EDT
Terminated Phase 2 Interventional

Inhaled Nitric Oxide for Pediatric Painful Sickle Crisis

NCT00142051
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
nitric oxide, oxygen
Drug
Lead sponsor
Boston Children's Hospital
Other
Eligibility
9 Years to 22 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Sep 2, 2026, 6:42 AM EDT
Completed No phase listed Observational

Measuring Exhaled Nitric Oxide (eNO) Using the Apieron INSIGHT System and the Aerocrine NIOX System

NCT00739531
View directory record Official record
Conditions
Asthma
Interventions
Exhaled nitric oxide (eNO)
Device
Lead sponsor
Apieron
Industry
Eligibility
5 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007
U.S. locations
2
States / cities
Shreveport, Louisiana • Lake Oswego, Oregon
Source: ClinicalTrials.gov public record
Updated Aug 20, 2008 · Synced Sep 2, 2026, 6:42 AM EDT
Withdrawn Phase 2 Interventional

Coronary Vasomotor Response After Riociguat Exposure

NCT01165931
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Riociguat (BAY63-2521)
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years to 90 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 22, 2013 · Synced Sep 2, 2026, 6:42 AM EDT