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ClinicalTrials.gov public records Last synced Oct 22, 2026, 5:41 AM EDT

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Showing 1–24 of 72 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Nitrite Clear all
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Oral Nitrite and Nitrate in Healthy Normal Volunteer Adults

NCT01681836
View directory record Official record
Conditions
Focus of Study of Healthy Adults
Interventions
15Nitrogen(15N)-labeled sodium nitrite, 15Nitrogen(15N)-labeled sodium nitrate
Drug
Lead sponsor
Gladwin, Mark, MD
Individual
Eligibility
18 Years to 60 Years
Enrollment
11 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 4, 2018 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Dietary Amino Acid Profile on Lipoprotein Metabolism, Vascular Reactivity and Inflammatory Markers

NCT00175084
View directory record Official record
Conditions
Hyperlipidemias, Metabolic Syndrome X, Cardiovascular Diseases
Interventions
Comparison of dietary protein amino acid profile
Behavioral
Lead sponsor
Tufts University
Other
Eligibility
50 Years to 85 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 23, 2014 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nitrate and Exercise Performance in Middle to Older Aged Adults

NCT03371966
View directory record Official record
Conditions
Aging
Interventions
High Nitrate Beetroot Juice, Low Nitrate Beetroot Juice
Dietary Supplement
Lead sponsor
Wake Forest University
Other
Eligibility
40 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2019
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated May 6, 2019 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 2 Interventional Results available

Inhaled Sodium Nitrite on Heart Failure With Preserved Ejection Fraction

NCT02262078
View directory record Official record
Conditions
Heart Failure
Interventions
Sodium Nitrite Inhalation Solution, Placebo
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 29, 2017 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 2 Interventional Results available

Sodium Nitrite in Acute Myocardial Infarction

NCT00924118
View directory record Official record
Conditions
Acute Myocardial Infarction
Interventions
Sodium Nitrite
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2016
U.S. locations
3
States / cities
Baltimore, Maryland • Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 14, 2018 · Synced Oct 22, 2026, 5:41 AM EDT
Active, not recruiting Phase 4 Interventional

Nitrite-boosting Therapy for Improving Physiological Function in Patients With Chronic Kidney Disease

NCT03826147
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
Nitrate-rich beetroot juice, Nitrate-depleted beetroot juice
Dietary Supplement
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
30 Years to 80 Years
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 2 Interventional Results available

Nitrite, Isoquercetin and Endothelial Dysfunction (NICE) Trial

NCT02552888
View directory record Official record
Conditions
Chronic Kidney Disease
Interventions
Immediate release sodium nitrite, Isoquercetin, placebos
Drug · Dietary Supplement · Other
Lead sponsor
Tulane University
Other
Eligibility
21 Years to 74 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Apr 20, 2021 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 2 Interventional Results available

Safety and Pharmacokinetic Evaluation of Nitrite for Prevention of Cerebral Vasospasm

NCT00873015
View directory record Official record
Conditions
Subarachnoid Hemorrhage
Interventions
Sodium nitrite, Saline
Drug
Lead sponsor
Hope Pharmaceuticals
Industry
Eligibility
18 Years to 80 Years
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 21, 2020 · Synced Oct 22, 2026, 5:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Urinalysis Results in Healthy Individuals

NCT04055675
View directory record Official record
Conditions
Asymptomatic Bacteriuria, Asymptomatic Pyuria
Interventions
Urine dipstick test
Diagnostic Test
Lead sponsor
Kendall Healthcare Group, Ltd.
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Miami, Florida
Source: ClinicalTrials.gov public record
Updated Jun 18, 2020 · Synced Oct 22, 2026, 5:41 AM EDT
Terminated Phase 2 Interventional Results available

Inhaled Nitric Oxide After Out-of-Hospital Cardiac Arrest

NCT03079102
View directory record Official record
Conditions
Heart Arrest, Out-Of-Hospital
Interventions
Nitric Oxide, Nitrogen
Drug
Lead sponsor
Cameron Dezfulian
Other
Eligibility
18 Years and older
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
5
States / cities
McKeesport, Pennsylvania • Monroeville, Pennsylvania • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 25, 2022 · Synced Oct 22, 2026, 5:41 AM EDT
Terminated Phase 2 Interventional

Long-term Study of AIR001 in Subjects With WHO Group 1 Pulmonary Arterial Hypertension Who Completed AIR001-CS05

NCT01725269
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
AIR001
Drug
Lead sponsor
Aires Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
17
States / cities
La Jolla, California • Torrance, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2014 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Clinical Study to Investigate the Urinary Excretion of N-nitrosodimethylamine (NDMA) After Ranitidine Administration

NCT04397445
View directory record Official record
Conditions
Ranitidine Adverse Reaction, Pharmacokinetics, Food-drug Interaction
Interventions
Ranitidine, Placebo, Low nitrite/NDMA meals, High nitrite/NDMA meals
Drug · Other
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 50 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
West Bend, Wisconsin
Source: ClinicalTrials.gov public record
Updated Aug 9, 2021 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Dose-Finding, Safety, Pharmacodynamic Effect Study of Sodium Nitrite Inhalation Solution in Normal, Healthy Volunteers

NCT00814645
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
Sodium Nitrite Inhalation Solution, Placebo and AIR001 Inhalation Solution (Expansion arm)
Drug
Lead sponsor
Aires Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 55 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 17, 2012 · Synced Oct 22, 2026, 5:41 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Rapid UTI Diagnostics in Lower Urinary Tract Dysfunction Among Catheter Users

NCT07784829
View directory record Official record
Conditions
Neurogenic Bladder Disorder, Lower Urinary Tract Disorder, Urinary Tract Infection (Diagnosis)
Interventions
urine Resazurin Reduction Ratio, USQNB
Diagnostic Test · Other
Lead sponsor
Medstar Health Research Institute
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2029
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 2 Interventional

Dietary Nitrate and Nitrite to Increase Nitric Oxide in Patients With Coronary Artery Disease

NCT00069654
View directory record Official record
Conditions
Coronary Arteriosclerosis
Interventions
Forearm blood flow study, Brachial artery reactivity study, Treadmill exercise test
Procedure
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
22 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 2 Interventional Results available

Acute Effects of Inorganic Nitrite on Cardiovascular Hemodynamics in Heart Failure With Preserved Ejection Fraction

NCT01932606
View directory record Official record
Conditions
Heart Disease, Heart Failure With Preserved Ejection Fraction, Exercise Intolerance, Pulmonary Hypertension
Interventions
Nitrite, Saline Placebo for Nitrite
Drug
Lead sponsor
Barry Borlaug
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 14, 2016 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nitrite Supplementation for Improving Physiological Function in Older Adults

NCT02393742
View directory record Official record
Conditions
Ageing
Interventions
Sodium nitrite, Placebo
Drug
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
60 Years to 79 Years · Female only
Enrollment
49 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2019
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Dec 5, 2019 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 1 Interventional

Phase 1 Clinical Trial of Sodium Nitrite for Out of Hospital Cardiac Arrest

NCT02987088
View directory record Official record
Conditions
Out-Of-Hospital Cardiac Arrest
Interventions
Sodium Nitrite
Drug
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 7, 2018 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 1 Interventional

Therapeutic Application of Intravascular Nitrite for Sickle Cell Disease

NCT00095472
View directory record Official record
Conditions
Sickle Cell Anemia
Interventions
L-NMMA, Sodium Nitrite
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 5, 2019 · Synced Oct 22, 2026, 5:41 AM EDT
Terminated Phase 2 Interventional Results available

Topical Sodium Nitrite in Sickle Cell Disease and Leg Ulcers

NCT02863068
View directory record Official record
Conditions
Sickle Cell Disease
Interventions
Topical Sodium Nitrite, Placebo
Drug · Other
Lead sponsor
caterina P minniti
Other
Eligibility
18 Years and older
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2023
U.S. locations
3
States / cities
The Bronx, New York • Durham, North Carolina • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 7, 2025 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 2 Interventional Results available

Phase IIa: Safety, PK, & Tolerability of Sodium Nitrite in Patients With Peripheral Arterial Disease-SONIC

NCT01401517
View directory record Official record
Conditions
Peripheral Arterial Disease
Interventions
sodium nitrite
Drug
Lead sponsor
TheraVasc Inc.
Industry
Eligibility
35 Years to 85 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
10
States / cities
Aurora, Colorado • Atlanta, Georgia • Iowa City, Iowa + 6 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2020 · Synced Oct 22, 2026, 5:41 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Biomarkers for Cardiovascular Disease

NCT00109018
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
21 Years and older
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 22, 2026, 5:41 AM EDT
Completed Phase 2 Interventional Results available

Nitrite Supplementation in Long COVID Patients

NCT05618574
View directory record Official record
Conditions
Long COVID, Cardiorespiratory Fitness
Interventions
140 ml per day of Beet-It nitrate beverage (James White Drinks Ltd., Ipswich, UK), 210 ml of nitrate-depleted placebo
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 22, 2026, 5:41 AM EDT
Terminated Phase 2 Interventional

A Phase 2 Study to Determine the Safety and Efficacy of AIR001 in Subjects With Pulmonary Arterial Hypertension (PAH)

NCT01725256
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
AIR001 (sodium nitrite inhalation solution)
Drug
Lead sponsor
Aires Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
17
States / cities
La Jolla, California • Torrance, California • Aurora, Colorado + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 9, 2014 · Synced Oct 22, 2026, 5:41 AM EDT