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ClinicalTrials.gov public records Last synced Sep 30, 2026, 5:08 PM EDT

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Showing 25–43 of 43 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Essential Amino Acid Protein Supplement Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Methionine Tolerance in Healthy Human Adults

NCT02566434
View directory record Official record
Conditions
Healthy
Interventions
methionine
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
40 Years to 79 Years
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Sep 26, 2018 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Not applicable Interventional

Leucine-enriched Essential Amino Acid Intake to Optimize Protein Anabolism in Children With Cystic Fibrosis

NCT01172301
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
Essential amino acid intake + Leucine vs total AA supplement
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
10 Years to 21 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Aug 11, 2015 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutritional Stimulation of Growth in Children With Short Stature

NCT04226586
View directory record Official record
Conditions
Nutritional Stunting, Growth Failure
Interventions
Essential Amino Acid (EAA) group, Placebo
Dietary Supplement
Lead sponsor
Arkansas Children's Hospital Research Institute
Other
Eligibility
3 Years to 11 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jul 31, 2024 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Combined Effects of Nutritional and Exercise Countermeasures

NCT00447044
View directory record Official record
Conditions
Muscular Atrophy, Muscle Weakness
Interventions
Resistance Exercise, diet orange soda, essential amino acids
Behavioral · Dietary Supplement
Lead sponsor
University of Arkansas
Other
Eligibility
18 Years to 50 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Jun 19, 2009 · Synced Sep 30, 2026, 5:08 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Daily Upgrade Trial

NCT07792603
View directory record Official record
Conditions
Healthy Women
Interventions
Essential Amino Acid+, Non-Calorie Placebo, High intensity Interval Training, No Exercise
Dietary Supplement · Behavioral · Other
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
25 Years to 45 Years · Female only
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Sep 30, 2026, 5:08 PM EDT
Withdrawn Not applicable Interventional

Pilot Study: Combining Nutritional Supplements With Standard Antidepressant to Treat Depression.

NCT02223299
View directory record Official record
Conditions
Depression
Interventions
L-tyrosine, L-Tryptophan, deplin, Placebo A, Placebo B
Dietary Supplement · Drug · Other
Lead sponsor
John D. Dingell VA Medical Center
Federal
Eligibility
18 Years to 65 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Feb 21, 2020 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Not applicable Interventional

L-lysine in Treating Oral Mucositis in Patients Undergoing Radiation Therapy With or Without Chemotherapy For Head and Neck Cancer

NCT01155609
View directory record Official record
Conditions
Mucositis, Oral Complications of Chemotherapy, Oral Complications of Radiation Therapy, Recurrent Adenoid Cystic Carcinoma of the Oral Cavity, Recurrent Basal Cell Carcinoma of the Lip, Recurrent Lymphoepithelioma of the Nasopharynx, Recurrent Lymphoepithelioma of the Oropharynx, Recurrent Mucoepidermoid Carcinoma of the Oral Cavity, Recurrent Salivary Gland Cancer, Recurrent Squamous Cell Carcinoma of the Hypopharynx, Recurrent Squamous Cell Carcinoma of the Larynx, Recurrent Squamous Cell Carcinoma of the Lip and Oral Cavity, Recurrent Squamous Cell Carcinoma of the Nasopharynx, Recurrent Squamous Cell Carcinoma of the Oropharynx, Recurrent Verrucous Carcinoma of the Larynx, Recurrent Verrucous Carcinoma of the Oral Cavity, Stage I Adenoid Cystic Carcinoma of the Oral Cavity, Stage I Basal Cell Carcinoma of the Lip, Stage I Lymphoepithelioma of the Nasopharynx, Stage I Lymphoepithelioma of the Oropharynx, Stage I Mucoepidermoid Carcinoma of the Oral Cavity, Stage I Salivary Gland Cancer, Stage I Squamous Cell Carcinoma of the Hypopharynx, Stage I Squamous Cell Carcinoma of the Larynx, Stage I Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage I Squamous Cell Carcinoma of the Nasopharynx, Stage I Squamous Cell Carcinoma of the Oropharynx, Stage I Verrucous Carcinoma of the Larynx, Stage I Verrucous Carcinoma of the Oral Cavity, Stage II Adenoid Cystic Carcinoma of the Oral Cavity, Stage II Basal Cell Carcinoma of the Lip, Stage II Lymphoepithelioma of the Nasopharynx, Stage II Lymphoepithelioma of the Oropharynx, Stage II Mucoepidermoid Carcinoma of the Oral Cavity, Stage II Salivary Gland Cancer, Stage II Squamous Cell Carcinoma of the Hypopharynx, Stage II Squamous Cell Carcinoma of the Larynx, Stage II Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage II Squamous Cell Carcinoma of the Nasopharynx, Stage II Squamous Cell Carcinoma of the Oropharynx, Stage II Verrucous Carcinoma of the Larynx, Stage II Verrucous Carcinoma of the Oral Cavity, Stage III Adenoid Cystic Carcinoma of the Oral Cavity, Stage III Basal Cell Carcinoma of the Lip, Stage III Lymphoepithelioma of the Nasopharynx, Stage III Lymphoepithelioma of the Oropharynx, Stage III Mucoepidermoid Carcinoma of the Oral Cavity, Stage III Salivary Gland Cancer, Stage III Squamous Cell Carcinoma of the Hypopharynx, Stage III Squamous Cell Carcinoma of the Larynx, Stage III Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage III Squamous Cell Carcinoma of the Nasopharynx, Stage III Squamous Cell Carcinoma of the Oropharynx, Stage III Verrucous Carcinoma of the Larynx, Stage III Verrucous Carcinoma of the Oral Cavity, Stage IV Adenoid Cystic Carcinoma of the Oral Cavity, Stage IV Basal Cell Carcinoma of the Lip, Stage IV Lymphoepithelioma of the Nasopharynx, Stage IV Lymphoepithelioma of the Oropharynx, Stage IV Mucoepidermoid Carcinoma of the Oral Cavity, Stage IV Salivary Gland Cancer, Stage IV Squamous Cell Carcinoma of the Hypopharynx, Stage IV Squamous Cell Carcinoma of the Larynx, Stage IV Squamous Cell Carcinoma of the Lip and Oral Cavity, Stage IV Squamous Cell Carcinoma of the Nasopharynx, Stage IV Squamous Cell Carcinoma of the Oropharynx, Stage IV Verrucous Carcinoma of the Larynx, Stage IV Verrucous Carcinoma of the Oral Cavity
Interventions
quality-of-life assessment, management of therapy complications, L-lysine
Procedure · Dietary Supplement
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 17, 2013 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Not applicable Interventional

Treatment of Type 2 Diabetes With Immunonutrients

NCT02462863
View directory record Official record
Conditions
Diabetes Mellitus, Type 2
Interventions
Arginine and fish oil
Dietary Supplement
Lead sponsor
The Christ Hospital
Other
Eligibility
18 Years to 65 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 1, 2020 · Synced Sep 30, 2026, 5:08 PM EDT
Enrolling by invitation Not applicable Interventional

Essential Amino Acid Supplementation in Adult Spinal Deformity Patients

NCT07341399
View directory record Official record
Conditions
Adult Spinal Deformity
Interventions
Essential Amino Acid Supplement by Amino Co, Placebo
Dietary Supplement
Lead sponsor
University of Arkansas
Other
Eligibility
40 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Little Rock, Arkansas
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Muscle Regrowth During Physical Rehabilitation and Amino Acid Supplementation

NCT00760383
View directory record Official record
Conditions
Osteoarthritis
Interventions
Essential amino acids, Alanine
Dietary Supplement
Lead sponsor
University of Oregon
Other
Eligibility
60 Years to 80 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2013
U.S. locations
2
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 4, 2014 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Orally Ingesting Branched Chained Amino Acids on Delayed Onset Muscle Soreness in Diabetic Patients

NCT01211717
View directory record Official record
Conditions
Type 2 Diabetes, Healthy Individuals
Interventions
Branched Chained Amino Acids, Cellulose Placebo mix
Dietary Supplement · Other
Lead sponsor
Loma Linda University
Other
Eligibility
20 Years to 90 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2011
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Apr 22, 2011 · Synced Sep 30, 2026, 5:08 PM EDT
Withdrawn Not applicable Interventional

Targeted Nutritional Supplement After Lumbar Spine Surgery: A Randomized, Placebo-Controlled, Double-Blind Trial

NCT06579391
View directory record Official record
Conditions
Lumbar Spinal Stenosis
Interventions
Essential amino acids, Alanine
Dietary Supplement
Lead sponsor
University of California, Irvine
Other
Eligibility
18 Years to 80 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Orange, California
Source: ClinicalTrials.gov public record
Updated May 29, 2025 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

The Effect of Endothelin and L-Arginine on Racial Differences in Vasoconstriction

NCT03679780
View directory record Official record
Conditions
Cardiovascular Diseases, Cardiovascular Risk Factor, Vasoconstriction
Interventions
BQ-788, BQ-123, L-Arginine, NG Nitro L Arginine Methyl Ester, Sodium Nitroprusside, Lactated Ringer's
Drug
Lead sponsor
The University of Texas at Arlington
Other
Eligibility
18 Years to 35 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2023
U.S. locations
1
States / cities
Arlington, Texas
Source: ClinicalTrials.gov public record
Updated Jun 11, 2024 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Phase 2 Interventional Results available

Use of β-hydroxy-β-methylbutyrate to Counteract Muscle Loss in Men With Prostate Cancer on Androgen Ablation

NCT01607879
View directory record Official record
Conditions
Prostate Cancer
Interventions
Standard of care ADT + (HMB + arginine + glutamine), Standard of care ADT
Drug · Other
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
60 Years and older · Male only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 22, 2023 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Early Phase 1 Interventional

A Targeted Amino Acid Supplement for People With Parkinson's Disease

NCT06954662
View directory record Official record
Conditions
Parkinson Disease, Idiopathic
Interventions
Amino acid supplement, Whey Protein Supplement, Isonitrogenous Placebo Supplement
Drug · Dietary Supplement
Lead sponsor
UConn Health
Other
Eligibility
55 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
Farmington, Connecticut
Source: ClinicalTrials.gov public record
Updated Aug 13, 2026 · Synced Sep 30, 2026, 5:08 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 3, 2012 · Synced Sep 30, 2026, 5:08 PM EDT
Recruiting Phase 2 Interventional

Essential Amino Acid Supplementation for Femoral Fragility Fractures

NCT06050668
View directory record Official record
Conditions
Femoral Fracture, Fragility Fracture, Muscle Atrophy
Interventions
Essential Amino Acid Supplementation
Combination Product
Lead sponsor
Michael C Willey
Other
Eligibility
65 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
2
States / cities
Iowa City, Iowa • Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Phase 2 Interventional

L-Arginine, Vascular Response and Mechanisms

NCT01482247
View directory record Official record
Conditions
Hypertension, Diabetes
Interventions
L-Arginine, Placebo Supplement
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
70 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 28, 2016 · Synced Sep 30, 2026, 5:08 PM EDT
Completed Phase 2 Interventional Results available

Mechanistic Approach to Preventing Atrophy and Restoring Function in Older Adults

NCT02145949
View directory record Official record
Conditions
Muscle Atrophy, Quality of Life
Interventions
Essential Amino Acids (EAA), Placebo (Alanine)
Drug
Lead sponsor
University of Oregon
Other
Eligibility
50 Years to 80 Years
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
2
States / cities
Eugene, Oregon
Source: ClinicalTrials.gov public record
Updated Jul 23, 2024 · Synced Sep 30, 2026, 5:08 PM EDT