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Showing 1–24 of 58 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Oral L-Arginine Clear all
Recruiting Early Phase 1 Interventional

Arginine and Whole Brain Radiation Therapy for the Treatment of Patients With Brain Metastases

NCT06328686
View directory record Official record
Conditions
Metastatic Malignant Neoplasm in the Brain, Metastatic Malignant Solid Neoplasm
Interventions
Arginine, Biospecimen Collection, Computed Tomography, Magnetic Resonance Imaging, Spectroscopy, Whole-Brain Radiotherapy
Dietary Supplement · Procedure · Radiation
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 16, 2025 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Phase 2 Interventional

Arginine Treatment of Acute Chest Syndrome (Pneumonia) in Sickle Cell Disease Patients

NCT00029731
View directory record Official record
Conditions
Anemia, Sickle Cell, Pneumonia
Interventions
Arginine hydrochloride
Drug
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
5 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2005
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Mar 24, 2015 · Synced Sep 23, 2026, 1:35 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Supplementing L-citrulline to Overweight Late Asthma oNset Phenotypes

NCT03885245
View directory record Official record
Conditions
Asthma, Obesity
Interventions
L-ctirulline, Matching Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2026
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 9, 2025 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Maximal Use Study to Determine the Pharmacokinetics of L-arginine After Exaggerated Oral Use of COL101

NCT06182267
View directory record Official record
Conditions
Caries,Dental
Interventions
L Arginine, Sodium Fluoride
Drug
Lead sponsor
Colgate Palmolive
Industry
Eligibility
18 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Fair Lawn, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 1, 2024 · Synced Sep 23, 2026, 1:35 PM EDT
Terminated Phase 1 Interventional

Prospective L-arginine Study

NCT01485757
View directory record Official record
Conditions
Heart Transplant
Interventions
L-arginine
Drug
Lead sponsor
University of Michigan
Other
Eligibility
8 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2015
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 9, 2017 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Oral L-Citrulline and ADMA in Pregnancy

NCT00743210
View directory record Official record
Conditions
Blood Pressure
Interventions
L-citrulline, Placebo
Drug
Lead sponsor
University of Pittsburgh
Other
Eligibility
14 Years to 40 Years · Female only
Enrollment
41 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 15, 2014 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Arginine Metabolism in Youth With Type 2 Diabetes

NCT05477134
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Stable isotope infusion, oral glucose ingestion, intravenous arginine bolus
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
12 Years to 20 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Phase 1 Interventional

Safety, Tolerability and Effects of L-Arginine in Boys With Dystrophinopathy on Corticosteroids

NCT01388764
View directory record Official record
Conditions
Dystrophinopathy, Duchenne Muscular Dystrophy, Becker's Muscular Dystrophy
Interventions
L-arginine
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
7 Years to 11 Years · Male only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 2, 2012 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Not applicable Interventional Results available

Effect of Exenatide, Sitagliptin or Glimepiride on Functional ß -Cell Mass

NCT00775684
View directory record Official record
Conditions
Pre-diabetes, Type 2 Diabetes
Interventions
Exenatide, Sitagliptin, Glimepiride
Drug
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 70 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
3
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jun 6, 2022 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Phase 1 Interventional

A Study of JNJ-64619178, an Inhibitor of PRMT5 in Participants With Advanced Solid Tumors, NHL, and Lower Risk MDS

NCT03573310
View directory record Official record
Conditions
Neoplasms, Solid Tumor, Adult, Non-Hodgkin Lymphoma, Myelodysplastic Syndromes
Interventions
JNJ-64619178
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years and older
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
4
States / cities
Sarasota, Florida • Boston, Massachusetts • Columbus, Ohio + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Sep 23, 2026, 1:35 PM EDT
Active, not recruiting Phase 3 Interventional

Dry Mouth Toothpaste Study - Comparing Two Toothpastes With Arginine

NCT06365047
View directory record Official record
Conditions
Xerostomia
Interventions
8% Arginine toothpaste, 1000 ppm F toothpaste
Device · Drug
Lead sponsor
Tufts University
Other
Eligibility
18 Years to 80 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 23, 2026, 1:35 PM EDT
Terminated Not applicable Interventional

Nutraceutical Citrulline in Pregnancy

NCT02772887
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
L-Citrulline, Placebo
Dietary Supplement · Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
14 Years to 40 Years · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 29, 2019 · Synced Sep 23, 2026, 1:35 PM EDT
Recruiting Phase 2 Interventional

A Study of Amivantamab in Participants With Advanced or Metastatic Solid Tumors Including Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer

NCT05498428
View directory record Official record
Conditions
Carcinoma, Non-small-Cell Lung
Interventions
Amivantamab, Lazertinib, Carboplatin, Pemetrexed, Direct Oral Anticoagulant (DOAC), Low Molecular Weight Heparin (LMWH)
Drug
Lead sponsor
Janssen Research & Development, LLC
Industry
Eligibility
18 Years and older
Enrollment
520 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
26
States / cities
La Jolla, California • Orange, California • Stanford, California + 21 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 23, 2026, 1:35 PM EDT
Withdrawn Phase 4 Interventional

L-Arginine and Spironolactone Trial in Dialysis-Dependent ESRD

NCT01855334
View directory record Official record
Conditions
End Stage Renal Disease, Hemodialysis
Interventions
Spironolactone, L-arginine, Placebo
Drug · Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 85 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
3
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 3, 2017 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Phase 2 Interventional Results available

A Trial to Investigate Efficacy, Safety and Tolerability of FE 201836 for Nocturia Due to Nocturnal Polyuria in Adults

NCT03201419
View directory record Official record
Conditions
Nocturia
Interventions
FE 201836, Desmopressin, Placebo oral solution, Placebo ODT
Drug
Lead sponsor
Ferring Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
43
States / cities
Birmingham, Alabama • Mobile, Alabama • Lincoln, California + 35 more
Source: ClinicalTrials.gov public record
Updated Mar 1, 2022 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Identifying Oxytocin Deficiency in Adults With Pituitary Disease

NCT06460948
View directory record Official record
Conditions
Arginine Vasopressin Deficiency, Oxytocin Deficiency
Interventions
Norethindrone Acetate-Ethinyl Estradiol
Drug
Lead sponsor
Elizabeth Austen Lawson
Other
Eligibility
18 Years to 65 Years
Enrollment
28 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Sep 23, 2026, 1:35 PM EDT
Not yet recruiting Phase 1 Interventional

Study of Supplemental Arginine With Chemotherapy and Immunotherapy in Platinum Resistant Ovarian, Fallopian Tube, and Peritoneal Cancer

NCT07772882
View directory record Official record
Conditions
Platinum Resistant Ovarian Cancer, Fallopian Tube Cancers, Peritoneal Carcinoma
Interventions
Cohort A1, Cohort A2, Cohort A3, A3 Expansion, Cohort B1, Cohort B2, Cohort B3, B3 Expansion
Drug
Lead sponsor
Rebecca Arend
Other
Eligibility
18 Years to 89 Years · Female only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 23, 2026, 1:35 PM EDT
Terminated Phase 2 Interventional

Study of HQK-1004 and Valganciclovir to Treat Epstein-Barr Virus (EBV) - Positive Lymphoid Malignancies or Lymphoproliferative Disorders

NCT00992732
View directory record Official record
Conditions
Lymphoid Malignancies, Lymphoproliferative Disorders
Interventions
HQK-1004, Valganciclovir (may substitute with ganciclovir)
Drug
Lead sponsor
HemaQuest Pharmaceuticals Inc.
Industry
Eligibility
3 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
8
States / cities
Palo Alto, California • San Francisco, California • Chicago, Illinois + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2011 · Synced Sep 23, 2026, 1:35 PM 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 23, 2026, 1:35 PM 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 23, 2026, 1:35 PM EDT
Completed Phase 2 Interventional Results available

Effects of L-arginine Supplementation in Adults With Moderate to Severe Asthma

NCT00280683
View directory record Official record
Conditions
Asthma
Interventions
L-arginine, Placebo
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 90 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2008
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Sep 23, 2026, 1:35 PM EDT
Completed Phase 3 Interventional Results available

Investigation of the Superiority Effect of Desmopressin to Placebo in Terms of Night Voids Reduction in Nocturia Adult Female Patients

NCT01223937
View directory record Official record
Conditions
Nocturia
Interventions
Desmopressin, Placebo
Drug
Lead sponsor
Ferring Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
268 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
41
States / cities
Huntsville, Alabama • Scottsdale, Arkansas • Foothill Ranch, California + 36 more
Source: ClinicalTrials.gov public record
Updated Oct 14, 2015 · Synced Sep 23, 2026, 1:35 PM EDT
Not listed Not applicable Interventional

Effect of an Amino-Acid-Based Blend on Human Growth Hormone (hGH) and Fibromyalgia (FM) Symptoms

NCT04510181
View directory record Official record
Conditions
Fibromyalgia
Interventions
amino acid-based blend
Dietary Supplement
Lead sponsor
Pekarovics, Susan, MD
Other
Eligibility
18 Years to 80 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 11, 2020 · Synced Sep 23, 2026, 1:35 PM EDT
Terminated Phase 1 Interventional

Ficlatuzumab, Cisplatin and IMRT in Locally Advanced Head and Neck Squamous Cell Carcinoma

NCT02277184
View directory record Official record
Conditions
Carcinoma, Squamous Cell of Head and Neck
Interventions
Ficlatuzumab, Cisplatin, Intensity Modulated Radiotherapy (IMRT)
Drug · Radiation
Lead sponsor
Julie E. Bauman, MD, MPH
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
3
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 12, 2017 · Synced Sep 23, 2026, 1:35 PM EDT