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Showing 1–24 of 76 matching trials from the live ClinicalTrials.gov search.
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Completed Phase 4 Interventional

BNP for Cardio-Renal Decompensation Syndrome (BNP-CARDS)

NCT00186329
View directory record Official record
Conditions
Congestive Heart Failure Exacerbation, Renal Insufficiency
Interventions
Natrecor, a recombinant form of B-type Natriuretic Peptide, made by Scios, Inc. vs. placebo
Drug
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Apr 27, 2015 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Inorganic Nitrate and Intensity of Exercise on Cardiovascular Health in Post-Menopausal Females

NCT05221905
View directory record Official record
Conditions
Vascular Dilation, Arterial Stiffness
Interventions
BEET IT - Concentrate Beet root juice, BEET IT - Concentrate Beet root juice (nitrate depleted)
Drug
Lead sponsor
University of Virginia
Other
Eligibility
45 Years to 75 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2023
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Jul 20, 2026, 7:25 PM 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 1, 2017 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Not applicable Interventional

Blueberries for Improving Vascular Endothelial Function in Postmenopausal Women With Elevated Blood Pressure

NCT03370991
View directory record Official record
Conditions
Menopause, Elevated Blood Pressure, Hypertension, Endothelial Dysfunction
Interventions
Blueberry Powder, Placebo Powder
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Sep 13, 2022 · Synced Jul 20, 2026, 7:25 PM 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 4, 2019 · Synced Jul 20, 2026, 7:25 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers

Sex Disparities in Hypoxic Sympatholysis and Impact of Obesity

NCT04436731
View directory record Official record
Conditions
Obesity, Healthy, Vasoconstriction, Vasodilation
Interventions
Hypoxia Exposure, Phenylephrine, Dexmedetomidine, Phentolamine, Norepinephrine
Other · Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
104 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2026
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Jun 3, 2025 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Phase 2Phase 3 Interventional Results available

Topical Radial Artery Vasodilation

NCT01155167
View directory record Official record
Conditions
Cardiac Catheterization, Spasm
Interventions
Nitroglycerin and lidocaine, Placebo
Drug · Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years to 100 Years
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 24, 2018 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety Study of Dantrolene to Treat Cerebral Vasospasm After Subarachnoid Hemorrhage

NCT00964548
View directory record Official record
Conditions
Cerebral Vasospasm After Subarachnoid Hemorrhage
Interventions
Dantrolene
Drug
Lead sponsor
University of Massachusetts, Worcester
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
2
States / cities
Boston, Massachusetts • Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 24, 2012 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Korean Red Ginseng Extract on Blood Flow in Healthy Adults

NCT06236243
View directory record Official record
Conditions
Cardiovascular Diseases, Blood Pressure Disorders, Vasodilation, Platelet Aggregation
Interventions
Korean Red Ginseng Extract Powder 120 mg/tablet, Korean Red Ginseng Extract Powder 500 mg/tablet, Placebo
Dietary Supplement
Lead sponsor
Korea Ginseng Corporation
Industry
Eligibility
20 Years to 75 Years
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
Tarzana, California
Source: ClinicalTrials.gov public record
Updated Nov 26, 2024 · Synced Jul 20, 2026, 7:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Measurement of the Eye's Blood Vessels Using the Dynamic Vessel Analyzer (DVA)

NCT00783029
View directory record Official record
Conditions
Healthy
Interventions
Not listed
Lead sponsor
Penn State University
Other
Eligibility
21 Years to 65 Years
Enrollment
87 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2011
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 6, 2012 · Synced Jul 20, 2026, 7:25 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Microvascular Reactivity.

NCT00259701
View directory record Official record
Conditions
Diabetes, Retinopathy, Vascular Pathology
Interventions
Laser Doppler Flowmetry with topical acetylcholine and nitroglycerin
Device
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Oct 5, 2006 · Synced Jul 20, 2026, 7:25 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Impact of Early Aging and Menopause on the Vascular Responses to Hypoxia

NCT06417177
View directory record Official record
Conditions
Aging, Menopause, Hypoxia, Vasodilation
Interventions
Placebo, Propranolol, Gemtesa
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 70 Years · Female only
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Jul 20, 2026, 7:25 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Iowa ACEs and Sleep Cohort and Manipulating Sleep in Young Adults With ACEs Studies

NCT06454344
View directory record Official record
Conditions
Adverse Childhood Experiences, Vascular Dilatation, Sleep, Sleep Disturbance, Psychosocial Stressor, Psychological Trauma, Endothelial Dysfunction, Inflammation, Oxidative Stress
Interventions
Cognitive Behavioral Therapy for Insomnia (CBT-i)
Behavioral
Lead sponsor
Nathaniel Jenkins
Other
Eligibility
18 Years to 29 Years
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2028
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Dec 10, 2025 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioavailability and Pharmacokinetic Parameters of Watermelon (Rind, Flesh and Seeds) Polyphenols

NCT03365960
View directory record Official record
Conditions
Healthy Subjects
Interventions
Watermelon Rind, Watermelon Flesh, Watermelon Seeds, Placebo
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
20 Years to 45 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 13, 2020 · Synced Jul 20, 2026, 7:25 PM EDT
Recruiting No phase listed Observational

Testosterone Deficiency and Endothelial Dysfunction After Spinal Cord Injury

NCT07227740
View directory record Official record
Conditions
Spinal Cord Injuries, Endothelial Dysfunction, Testosterone Deficiency
Interventions
Intra-arterial Infusion of Vasoactive Agents, Intra-arterial Vitamin C Infusion, Blood Sampling
Diagnostic Test
Lead sponsor
Craig Hospital
Other
Eligibility
18 Years to 89 Years · Male only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Englewood, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 20, 2025 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Phase 2 Interventional

The STRETCH Study: Distensibility on Endothelial-Dependent Vasoreactivity in Subjects With Systolic Hypertension

NCT00302250
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
ALT-711 (alagebrium chloride)
Drug
Lead sponsor
Synvista Therapeutics, Inc
Industry
Eligibility
50 Years and older
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 21, 2006 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Phase 2 Interventional

STRETCH Study: Effect of Distensibility on Endothelial-Dependent Vasoreactivity in Patients With ISH

NCT00277875
View directory record Official record
Conditions
Cardiovascular Disease
Interventions
ALT-711 (alagebrium chloride)
Drug
Lead sponsor
Synvista Therapeutics, Inc
Industry
Eligibility
50 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 26, 2009 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Reflex Responses to Intermittent Hypoxia in Humans: Mechanisms and Consequences

NCT05146089
View directory record Official record
Conditions
Sleep Apnea, Healthy, Vasoconstriction, Vasodilation
Interventions
Hypoxic exposure, modified Oxford test, Oral Bosentan 62.5 mg, Hypoxic ventilatory response test
Other · Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
2
States / cities
Columbia, Missouri • Rochester, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 5, 2021 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Fluid Milk in Attenuating Hyperglycemia and Hypertriglyceridemia After Meal

NCT02894112
View directory record Official record
Conditions
Oral Glucose Tolerance Test, High Fat Tolerance Test
Interventions
non-fat milk, carbohydrate control beverage, caloric control beverage
Dietary Supplement
Lead sponsor
University of Texas at Austin
Other
Eligibility
20 Years to 40 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Sep 8, 2016 · Synced Jul 20, 2026, 7:25 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers

Sex Disparities in Hypoxic Vasodilation and Impact of Obesity

NCT05219799
View directory record Official record
Conditions
Obesity, Vasodilation, Healthy
Interventions
Propranolol Hydrochloride, Isoproterenol, Phentolamine Mesylate, Norepinephrine
Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated May 28, 2025 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Vascular Effects of Endothelium-Derived Versus Hemoglobin-Transported Nitric Oxide in Healthy Subjects

NCT00001963
View directory record Official record
Conditions
Diabetes Mellitus, Healthy, Hypercholesterolemia, Hypertension
Interventions
hemoglobin-transported nitric oxide
Procedure
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1999 – 2000
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Phase 3 Interventional Results available

A Study of the Effect of Nebivolol to Evaluate Its Vasodilatory Effects in Hypertensive Patients

NCT00648895
View directory record Official record
Conditions
Hypertension
Interventions
Nebivolol, Metoprolol ER (TM)
Drug
Lead sponsor
Forest Laboratories
Industry
Eligibility
18 Years to 79 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2007
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 19, 2010 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Not applicable Interventional

Does Blood Vessel Vasodilation, Caused by Focal Infiltration of Lidocaine Cause Temporary Nerve Functional Recovery for Patients with Common Peroneal Nerve Injury or Entrapment: Testing the 'Phoenix Sign' Effect Between Lidocaine (a Common Local Anesthetic) and Papaverine, a Know Vasodilator

NCT06637046
View directory record Official record
Conditions
Drop Foot
Interventions
Diagnostic procedures, Lidocaine HCl
Diagnostic Test
Lead sponsor
Stephen Barrett
Other
Eligibility
18 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Marietta, Georgia
Source: ClinicalTrials.gov public record
Updated Oct 14, 2024 · Synced Jul 20, 2026, 7:25 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Cheese Consumption and Human Microvascular Function

NCT03376555
View directory record Official record
Conditions
Microvascular Dysfunction
Interventions
Low sodium no cheese, Low sodium cheese, High sodium no cheese, High sodium cheese
Dietary Supplement
Lead sponsor
Lacy Alexander
Other
Eligibility
55 Years to 75 Years
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced Jul 20, 2026, 7:25 PM EDT