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ClinicalTrials.gov public records Last synced May 21, 2026, 11:07 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Vasodilation Clear all
Completed No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Hypercholesterolemia, Hypertension
Interventions
Not listed
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2001
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 21, 2026, 11:07 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
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 May 21, 2026, 11:07 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Alcohol Drinking, Binge Drinking, Blood Pressure, Alcohol Abstinence, Aging, Lifestyle Factors, Vasodilation, Behavioral Problem
Interventions
Exercise Training, Alcohol Abstinence Intervention
Behavioral
Lead sponsor
The University of Texas at Arlington
Other
Eligibility
50 Years to 64 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Arlington, Texas
Source: ClinicalTrials.gov public record
Updated Feb 22, 2026 · Synced May 21, 2026, 11:07 PM EDT
Suspended Early Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy, Vasodilation, Insulin Resistance, Autonomic Dysfunction, Obesity
Interventions
Carbon dioxide breathing, Neurovascular Coupling, Human insulin
Other · Drug
Lead sponsor
University of Missouri-Columbia
Other
Eligibility
18 Years to 45 Years
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2027
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 18, 2025 · Synced May 21, 2026, 11:07 PM EDT
Recruiting Early Phase 1 Interventional Accepts healthy volunteers
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 May 21, 2026, 11:07 PM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Obesity
Interventions
Drug Trial 1 (EDD), Drug Trial 2 (ROV)
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 40 Years
Enrollment
8 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2021
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Feb 10, 2022 · Synced May 21, 2026, 11:07 PM EDT
Completed Not applicable Interventional
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 May 21, 2026, 11:07 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Cardiovascular Diseases, Vascular Dilation, Oxidative Stress
Interventions
Low Flavanol Cocoa Powder, High Flavanol Cocoa Powder, Vine to Bar Chocolate - 2 servings, Vine to Bar Chocolate - 1 serving, Vine to Bar Chocolate covered almonds
Other
Lead sponsor
University of California, Davis
Other
Eligibility
30 Years to 50 Years · Male only
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced May 21, 2026, 11:07 PM EDT
Terminated No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Type 2 Diabetes Mellitus
Interventions
blood sampling and brachial artery ultrasound
Procedure
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2018
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 11, 2016 · Synced May 21, 2026, 11:07 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Sleep
Interventions
Sleep consistency
Behavioral
Lead sponsor
Texas Tech University
Other
Eligibility
35 Years to 64 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Mar 24, 2025 · Synced May 21, 2026, 11:07 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers
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 May 21, 2026, 11:07 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
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 May 21, 2026, 11:07 PM EDT
Active, not recruiting Early Phase 1 Interventional Accepts healthy volunteers
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 May 21, 2026, 11:07 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
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 May 21, 2026, 11:07 PM EDT
Completed Phase 2 Interventional Results available
View directory record Official record
Conditions
Cardiovascular Diseases, Vascular Dilation
Interventions
Ifetroban Sodium, Placebo
Drug
Lead sponsor
Jeffrey Rade
Other
Eligibility
18 Years to 80 Years
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
1
States / cities
Worcester, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 4, 2024 · Synced May 21, 2026, 11:07 PM EDT
Completed Early Phase 1 Interventional
View directory record Official record
Conditions
Vasoplegia
Interventions
Ascorbic Acid
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Mar 10, 2021 · Synced May 21, 2026, 11:07 PM EDT
Recruiting No phase listed Observational Accepts healthy volunteers
View directory record Official record
Conditions
Spinal Cord Injuries, Endothelial Dysfunction
Interventions
Intra-arterial Infusion of Vasoactive Agents, Intra-arterial Vitamin C Infusion, Blood Sampling
Procedure
Lead sponsor
Craig Hospital
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Englewood, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced May 21, 2026, 11:07 PM EDT
Completed Not applicable Interventional
View directory record Official record
Conditions
Kidney Failure, Chronic
Interventions
Repetitive arm exercise
Other
Lead sponsor
University of Iowa
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Iowa City, Iowa
Source: ClinicalTrials.gov public record
Updated Feb 26, 2014 · Synced May 21, 2026, 11:07 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
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 May 21, 2026, 11:07 PM EDT
Terminated Not applicable Interventional
View directory record Official record
Conditions
Vascular, Endothelial, Endothelial Dysfunction, Endothelix
Interventions
Vendys II Device
Device
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
6 Years to 26 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 9, 2025 · Synced May 21, 2026, 11:07 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Healthy
Interventions
Miconazole, L-NMMA, Bradykinin
Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
Not listed
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2001
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced May 21, 2026, 11:07 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available
View directory record Official record
Conditions
Sleep
Interventions
Sleep duration
Behavioral
Lead sponsor
Texas Tech University
Other
Eligibility
40 Years to 79 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Jan 12, 2023 · Synced May 21, 2026, 11:07 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers
View directory record Official record
Conditions
Determine the Effects of Nitrosigine and Citrulline-malate on Flow-mediated Dilation Among Young Adults
Interventions
inositol-stabilized arginine silicate
Dietary Supplement
Lead sponsor
University of Arkansas, Fayetteville
Other
Eligibility
18 Years to 29 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Fayetteville, Arkansas
Source: ClinicalTrials.gov public record
Updated May 23, 2022 · Synced May 21, 2026, 11:07 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers
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 May 21, 2026, 11:07 PM EDT