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ClinicalTrials.gov public records Last synced Sep 3, 2026, 11:38 AM EDT

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Showing 1–24 of 31 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: L-NMMA Clear all
Completed Phase 1Phase 2 Interventional Results available

L-NMMA Plus Taxane Chemotherapy in Refractory Locally Advanced or Metastatic Triple Negative Breast Cancer Patients

NCT02834403
View directory record Official record
Conditions
Metastatic Triple Negative Breast Cancer
Interventions
L-NMMA, Docetaxel, Amlodipine, Pegfilgrastim, Enteric-coated aspirin
Drug
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of DPP4 Inhibition on Growth Hormone Secretion

NCT01701973
View directory record Official record
Conditions
Obesity
Interventions
Sitagliptin, Pegvisomant, Placebo, L-NMMA, Exendin 9-39
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 40 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 28, 2018 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Nitric Oxide to Improve Blood Flow in Sickle Cell Disease

NCT00009581
View directory record Official record
Conditions
Sickle Cell Anemia
Interventions
L-NMMA, Acetylcholine
Drug
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
Not listed
Enrollment
65 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2003
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 3, 2008 · Synced Sep 3, 2026, 11:38 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Endothelial Hyperpolarization in Humans

NCT00166166
View directory record Official record
Conditions
Hyperlipidemia
Interventions
Tetraethylammonium (TEA), L-NG-monomethyl Arginine (L-NMMA), Bradykinin, Sodium nitroprusside, Acetylcholine, Saline, Fluconazole
Drug
Lead sponsor
Emory University
Other
Eligibility
21 Years to 65 Years
Enrollment
174 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2013
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Aug 14, 2018 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Pathophysiology of Cardiometabolic Risk Factors in African Americans

NCT01122407
View directory record Official record
Conditions
Obesity, Hypertension
Interventions
L-NMMA, Trimethaphan
Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
30 Years to 50 Years · Female only
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2016
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 17, 2017 · Synced Sep 3, 2026, 11:38 AM EDT
Terminated Phase 1 Interventional

Sildenafil to Treat HIV-Associated Pulmonary Hypertension

NCT00327080
View directory record Official record
Conditions
HIV
Interventions
MRI, L-NMMA, Acetylcholine
Procedure · Drug
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Dec 16, 2019 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Insulin and Sarcopenia in the Elderly

NCT00690534
View directory record Official record
Conditions
Sarcopenia
Interventions
Insulin Regular, L-NMMA, Sodium Nitroprusside, mixed meal
Drug · Other
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
18 Years to 85 Years
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2012
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 11, 2016 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Mechanisms of Vasovagal Syncope

NCT01791816
View directory record Official record
Conditions
Vasovagal Syncope, Postural Tachycardia Syndrome
Interventions
Phenylephrine, L-Ng-monomethyl Arginine (L-NMMA)
Drug
Lead sponsor
New York Medical College
Other
Eligibility
14 Years to 29 Years
Enrollment
90 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2022
U.S. locations
1
States / cities
Hawthorne, New York
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Study On The Role Of Nitric Oxide In Alpha 1-Adrenergic Vasoreactivity

NCT00240058
View directory record Official record
Conditions
Blood Pressure
Interventions
Regional phenylephrine arterial infusion, Nitric Oxide Clamp
Drug
Lead sponsor
Crystal A. Gadegbeku
Other
Eligibility
18 Years to 55 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jun 4, 2017 · Synced Sep 3, 2026, 11:38 AM EDT
Recruiting Phase 1 Interventional Accepts healthy volunteers

: Vascular Function in Health and Disease

NCT02966665
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease, Pulmonary Artery Hypertension, Heart Failure, Hypertension
Interventions
Maximum Exercise Tests, BH4, L-NMMA, Vitamin C, Vitamin E, α-Lipoic Acid and L-Ascorbate, BQ-123, Fexofenadine, Ranitidine, Angiotensin-II, Valsartan, Acetylcholine, Sodium Nitroprusside, Angiotensin-II, Norepinephrine, Phentolamine, BQ-123, MitoQ, BH4
Other · Drug
Lead sponsor
Russell Richardson
Other
Eligibility
18 Years and older
Enrollment
420 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2026
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Sep 25, 2025 · Synced Sep 3, 2026, 11:38 AM EDT
Recruiting Phase 2 Interventional

Alpelisib/iNOS Inhibitor/Nab-paclitaxel in Patients With HER2 Negative Metaplastic Breast Cancer (MpBC)

NCT05660083
View directory record Official record
Conditions
HER2-negative Breast Cancer, Metastatic Breast Cancer, Metaplastic Breast Carcinoma, TNBC - Triple-Negative Breast Cancer
Interventions
L-NMMA
Drug
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
3
States / cities
Bethesda, Maryland • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effects of Miconazole on Blood Flow

NCT00004575
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 Sep 3, 2026, 11:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Autonomic Nervous System and the Metabolic Syndrome

NCT00580957
View directory record Official record
Conditions
Obesity
Interventions
Blocked, Intact
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 60 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2015
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 4, 2016 · Synced Sep 3, 2026, 11:38 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 3, 2026, 11:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Autonomic Nervous System and Chronic Fatigue Syndrome

NCT00580619
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Orthostatic Intolerance, Postural Tachycardia Syndrome
Interventions
Autonomic Function Testing, Saline infusions, L-NMMA trimethaphan, methyldopa
Other · Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 65 Years
Enrollment
170 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2017
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 17, 2017 · Synced Sep 3, 2026, 11:38 AM EDT
Not listed Phase 1 Interventional Accepts healthy volunteers

Role of Nitric Oxide in Cirrhosis: Relationship With Systemic Hemodynamics, Renal Function, Vasoactive Systems and Endotoxemia

NCT00005107
View directory record Official record
Conditions
Cirrhosis, Liver Cirrhosis
Interventions
N-monomethyl-L-arginine
Drug
Lead sponsor
National Center for Research Resources (NCRR)
NIH
Eligibility
18 Years to 70 Years
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Denver, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 23, 2005 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Not applicable Interventional Results available

Endothelial Function in Lower Extremity Bypass Grafts

NCT00759707
View directory record Official record
Conditions
Peripheral Arterial Disease
Interventions
L-N^G monomethyl arginine (L-NMMA)
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 15, 2017 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Renin-Angiotensin Aldosterone System and Fibrinolysis Interaction in Humans-Specific Aim 3

NCT00685945
View directory record Official record
Conditions
Obesity
Interventions
Control (bradykinin), L-NMMA + bradykinin, Isosorbide + L-NMMA + bradykinin, Sildenafil + L-NMMA + bradykinin
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 24, 2013 · Synced Sep 3, 2026, 11:38 AM EDT
Terminated Phase 1 Interventional Accepts healthy volunteers

Peripheral Vasodilation in Obese Humans

NCT02833207
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 Sep 3, 2026, 11:38 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers Results available

Alpha-Adrenoceptor Vascular Function In Chronic Kidney Disease Focus On The Role Of Endothelial Nitric Oxide

NCT00356265
View directory record Official record
Conditions
Chronic Kidney Disease, Hypertension
Interventions
Procedure: Regional phenylephrine arterial infusion
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 55 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 22, 2018 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Phase 1 Interventional Results available

Phase Ib of L-NMMA and Pembrolizumab

NCT03236935
View directory record Official record
Conditions
Non-Small Cell Lung Cancer, Malignant Melanoma, Head and Neck Squamous Cell Carcinoma, Classical Hodgkin Lymphoma, Urothelial Carcinoma Bladder, DNA Repair-Deficiency Disorders
Interventions
L-NMMA, Pembrolizumab
Drug
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Nitric Oxide and the Autonomic Nervous System

NCT00178919
View directory record Official record
Conditions
Hypertension, Pure Autonomic Failure
Interventions
L-NMMA, Trimethaphan
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years to 85 Years
Enrollment
112 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2008
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jun 3, 2013 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Plasma Triglyceride Extraction by The Muscle

NCT01860911
View directory record Official record
Conditions
Obesity, Insulin Resistance
Interventions
Insulin, NG-monomethyl-L-arginine
Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 50 Years
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 7, 2021 · Synced Sep 3, 2026, 11:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Mechanisms of Cerebrovascular Control

NCT02936687
View directory record Official record
Conditions
Metabolic Syndrome X
Interventions
NOS Inhibition, ET-1 Inhibition, NOS Inhibition Placebo, 3 Tesla MRI, Intravenous Catheter, Oral Glucose Tolerance Test, ET-1 Inhibition Placebo
Drug · Device · Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 45 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2021
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 17, 2021 · Synced Sep 3, 2026, 11:38 AM EDT