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ClinicalTrials.gov public records Last synced Oct 22, 2026, 11:03 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 2 Interventional Results available

Nitrites, Skeletal Muscle Mitochondrial Bioenergetics, and Physical Activity in Old Age

NCT04405180
View directory record Official record
Conditions
Aging, Sedentary Lifestyle, Frailty
Interventions
Placebos, 20mg sodium nitrite tid
Drug
Lead sponsor
Gladwin, Mark, MD
Individual
Eligibility
70 Years and older
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 10, 2024 · Synced Oct 22, 2026, 11:03 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, 11:03 AM EDT
Completed Phase 2 Interventional Results available

Pharmacokinetic Study of Oral Gepotidacin (GSK2140944) in Subjects With Uncomplicated Urinary Tract Infection (Acute Cystitis)

NCT03568942
View directory record Official record
Conditions
Infections, Bacterial
Interventions
Gepotidacin
Drug
Lead sponsor
GlaxoSmithKline
Industry
Eligibility
18 Years to 65 Years · Female only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
La Mesa, California
Source: ClinicalTrials.gov public record
Updated Jun 29, 2020 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Sodium Nitrite to Treat Arterial Aging

NCT02022670
View directory record Official record
Conditions
Vascular Aging
Interventions
Placebo, Sodium Nitrite
Drug
Lead sponsor
University of Colorado, Boulder
Other
Eligibility
50 Years to 79 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Boulder, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 15, 2015 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Phase 2 Interventional Results available

Oral Nitrite in Patients With Pulmonary Hypertension and Heart Failure With Preserved Ejection Fraction

NCT03015402
View directory record Official record
Conditions
Pulmonary Hypertension Secondary, Heart Failure
Interventions
Sodium Nitrite, Placebo Oral Capsule
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 7, 2024 · Synced Oct 22, 2026, 11:03 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, 11:03 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Role of Nitrite in Preconditioning Mediated Tolerance to Ischemic Stress

NCT00250185
View directory record Official record
Conditions
Ischemic Stress, Transient Non-Lethal Ischemia
Interventions
Sodium Nitrate, Acetylcholine
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years to 45 Years
Enrollment
135 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 2, 2017 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Efficacy Long-term Dietary Nitrate Consumption to Plasma Nitrite Conversion

NCT05380167
View directory record Official record
Conditions
Cardiovascular Diseases in Old Age
Interventions
BRJ Nitrate, BRJ Placebo
Dietary Supplement
Lead sponsor
Wake Forest University
Other
Eligibility
40 Years to 80 Years
Enrollment
13 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 25, 2022 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Three New Ideas to Protect Special Forces From the Stress of High Altitude

NCT02463357
View directory record Official record
Conditions
Mountain Sickness
Interventions
Quercetin, Nifedipine extended release, Methazolamide, Metformin, Placebo, Nitrite
Dietary Supplement · Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 30 Years · Male only
Enrollment
148 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Alma, Michigan
Source: ClinicalTrials.gov public record
Updated Mar 30, 2021 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Phase 2 Interventional Results available

Inorganic Nitrite Delivery to Improve Exercise Capacity in HFpEF

NCT02742129
View directory record Official record
Conditions
Heart Failure
Interventions
Nebulized Sodium Nitrite, Placebo
Drug
Lead sponsor
Adrian Hernandez
Other
Eligibility
40 Years and older
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
20
States / cities
Atlanta, Georgia • Chicago, Illinois • Baltimore, Maryland + 11 more
Source: ClinicalTrials.gov public record
Updated Mar 13, 2019 · Synced Oct 22, 2026, 11:03 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, 11:03 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, 11:03 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, 11:03 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, 11:03 AM EDT
Completed Phase 2 Interventional Results available

Oral Nitrite in Adults With Metabolic Syndrome and Hypertension

NCT01681810
View directory record Official record
Conditions
Metabolic Syndrome, Hypertension
Interventions
14Nitrogen Sodium Nitrite
Drug
Lead sponsor
Gladwin, Mark, MD
Individual
Eligibility
18 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 16, 2019 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Phase 2 Interventional Results available

Inhaled Nitrite in Subjects With Pulmonary Hypertension

NCT01431313
View directory record Official record
Conditions
Pulmonary Hypertension, Heart Failure, Diastolic
Interventions
Inhaled Nitrite
Drug
Lead sponsor
Schmidhofer, Mark, MD
Individual
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 28, 2019 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Effect of Sublingually Generated S-nitroso-N-acetylcysteine on Systemic Blood Pressure.

NCT05798481
View directory record Official record
Conditions
Hypertension, Cardiovascular Diseases
Interventions
Mixture of Sodium Nitrite and N-acetylcysteine (NAC) crytals.
Drug
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
21 Years to 80 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Nov 26, 2025 · Synced Oct 22, 2026, 11:03 AM EDT
Withdrawn Phase 2 Interventional

Treatment of Lung Injury From COVID-19 Infection With Intravenous Sodium Nitrite

NCT04401527
View directory record Official record
Conditions
COVID-19, Acute Respiratory Distress Syndrome, Acute Respiratory Failure
Interventions
Sodium Nitrite, Normal Saline
Drug
Lead sponsor
Hope Pharmaceuticals
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
2
States / cities
Tampa, Florida • Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated Sep 16, 2020 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Blood Nitrate/Nitrite Concentrations Following Acute Ingestion of Resync in Men and Women

NCT04125940
View directory record Official record
Conditions
Healthy
Interventions
Resync, Resync + Collagen, Placebo
Dietary Supplement · Other
Lead sponsor
University of Memphis
Other
Eligibility
18 Years to 50 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 28, 2021 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Phase 2 Interventional Results available

Nitrites, Exercise, and Peripheral Arterial Disease

NCT01684930
View directory record Official record
Conditions
Peripheral Arterial Disease
Interventions
Beetroot Juice (Beet-It Stamina Shot) & Supervised Exercise Training, Placebo Comparator Beverage (Beet-It Stamina Shot) & Exercise Training
Drug · Other
Lead sponsor
Duke University
Other
Eligibility
40 Years to 75 Years
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 29, 2017 · Synced Oct 22, 2026, 11:03 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety, Tolerability, and PK Parameters of Sodium Nitrite Inhalation Solution in Healthy Subjects

NCT01409122
View directory record Official record
Conditions
Pulmonary Hypertension, Pulmonary Arterial Hypertension
Interventions
15 mg sodium nitrite inhalation solution, 90 mg sodium nitrite inhalation solution, 45 mg sodium nitrite inhalation solution, 120 mg sodium nitrite inhalation solution, 25% MTD sodium nitrite inhalation solution
Drug
Lead sponsor
Aires Pharmaceuticals, Inc.
Industry
Eligibility
18 Years to 56 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 9, 2012 · Synced Oct 22, 2026, 11:03 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, 11:03 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Nitrate-rich Fruit and Vegetable Supplement on Blood Pressure

NCT03486145
View directory record Official record
Conditions
High Blood Pressure, Flow Mediated Dilation
Interventions
fruit and vegetable juice supplement, Placebo
Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 40 Years
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 3, 2018 · Synced Oct 22, 2026, 11:03 AM EDT
Terminated Phase 2 Interventional Results available

Sodium Nitrite in Lung Transplant Patients to Minimize the Risk of Pulmonary Graft Dysfunction

NCT01715883
View directory record Official record
Conditions
Primary Graft Dysfunction
Interventions
Sodium Nitrite
Drug
Lead sponsor
Gladwin, Mark, MD
Individual
Eligibility
18 Years to 70 Years
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 1, 2018 · Synced Oct 22, 2026, 11:03 AM EDT