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ClinicalTrials.gov public records Last synced Nov 15, 2026, 3:32 AM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 253 matching trials from the live ClinicalTrials.gov search.

Filters: Intervention: Amino acid supplementation Clear all

Conditions: Thyroid; Functional Disturbance, Hypothyroidism, Hemodialysis
Interventions: Levothyroxine Sodium, Placebos; Drug
Lead sponsor: University of California, Irvine; Other
Eligibility: 18 Years to 75 Years
Enrollment: 336 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2025
U.S. locations: 1
States / cities: Orange, California

Conditions: Brain Concussion
Interventions: Branched Chain Amino Acids, Placebo solution; Drug
Lead sponsor: Children's Hospital of Philadelphia; Other
Eligibility: 11 Years to 34 Years
Enrollment: 42 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2014 – 2023
U.S. locations: 1
States / cities: Philadelphia, Pennsylvania

Conditions: Vitamin B6 Deficiency
Interventions: Vitamin B6, Infusion of labeled serine, methionine and leucine; Dietary Supplement · Procedure
Lead sponsor: University of Florida; Other
Eligibility: 20 Years to 40 Years · Female only
Enrollment: 13 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2010 – 2014
U.S. locations: 1
States / cities: Gainesville, Florida

Conditions: Dietary Modification
Interventions: Carnitine, Choline, Antibiotics, Choline and Aspirin, Carnitine and Aspirin; Dietary Supplement · Drug
Lead sponsor: The Cleveland Clinic; Other
Eligibility: 18 Years and older
Enrollment: 100 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2011 – 2029
U.S. locations: 1
States / cities: Cleveland, Ohio

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

Conditions: Muscular Injury
Interventions: NUTRALYS pea protein supplement, Whey Protein, Apple juice; Dietary Supplement
Lead sponsor: Appalachian State University; Other
Eligibility: 18 Years to 55 Years
Enrollment: 90 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2018 – 2020
U.S. locations: 1
States / cities: Kannapolis, North Carolina

Conditions: Cirrhosis, Frailty, Sarcopenia
Interventions: HEAL-ME digital app, Creatine supplementation, Whey protein supplementation, Placebo; Behavioral · Dietary Supplement
Lead sponsor: University of California, San Francisco; Other
Eligibility: 18 Years and older
Enrollment: 100 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026
U.S. locations: 1
States / cities: San Francisco, California

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

Conditions: Concussion, Brain
Interventions: Creatine; Dietary Supplement
Lead sponsor: San Diego State University; Other
Eligibility: 18 Years to 35 Years
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2027
U.S. locations: 1
States / cities: San Diego, California

Conditions: Prostate Cancer
Interventions: soy isoflavones, soy protein isolate, placebo; Dietary Supplement · Other
Lead sponsor: Wake Forest University Health Sciences; Other
Eligibility: 18 Years to 120 Years · Male only
Enrollment: 62 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2003 – 2006
U.S. locations: 1
States / cities: Winston-Salem, North Carolina

Conditions: Endothelial Dysfunction
Interventions: Creatine Monohydrate, Maltodextrin (Placebo); Other
Lead sponsor: Florida State University; Other
Eligibility: 18 Years to 70 Years
Enrollment: 9 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2024
U.S. locations: 1
States / cities: Tallahassee, Florida

Conditions: Congenital Heart Defects
Interventions: Triostat, Placebo; Drug
Lead sponsor: Seattle Children's Hospital; Other
Eligibility: Up to 5 Months
Enrollment: 220 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2014 – 2019
U.S. locations: 3
States / cities: Los Angeles, California • Palo Alto, California • Seattle, Washington

Conditions: Gestational Diabetes Mellitus, Pregnancy, High Risk
Interventions: Metformin, Insulin; Drug
Lead sponsor: Ohio State University; Other
Eligibility: 18 Years and older · Female only
Enrollment: 1,572 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2030
U.S. locations: 26
States / cities: Tuscaloosa, Alabama • Los Angeles, California • San Francisco, California + 20 more

Conditions: Menopause, Hypertension
Interventions: L-Citrulline, Placebo; Dietary Supplement
Lead sponsor: Texas Tech University; Other
Eligibility: 50 Years to 70 Years · Female only
Enrollment: 19 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2024
U.S. locations: 1
States / cities: Lubbock, Texas

Conditions: Autism Spectrum Disorders
Interventions: Whey Protein, Rice Protein (Placebo); Dietary Supplement
Lead sponsor: Nova Southeastern University; Other
Eligibility: 3 Years to 5 Years
Enrollment: 81 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2016
U.S. locations: 3
States / cities: Fort Lauderdale, Florida

Conditions: Critical Illness, Sepsis, Respiratory Insufficiency
Interventions: Glutamine; Drug
Lead sponsor: Christiana Care Health Services; Other
Eligibility: 18 Years and older
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2007
U.S. locations: 1
States / cities: Newark, Delaware

Conditions: Physical Endurance
Interventions: Beta-alanine, Placebo, Muscular endurance exercise; Dietary Supplement · Behavioral
Lead sponsor: University of Miami; Other
Eligibility: 60 Years to 90 Years
Enrollment: 27 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2016
U.S. locations: 1
States / cities: Coral Gables, Florida

Conditions: Liver Disease
Interventions: 200 µg selenium as selenate, 400 µg selenium as selenate, 200 µg selenium as selenomethionine, Placebo; Dietary Supplement
Lead sponsor: Vanderbilt University; Other
Eligibility: 18 Years and older
Enrollment: 99 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2012
U.S. locations: 1
States / cities: Nashville, Tennessee

Conditions: Growth Hormone, Amino Acid
Interventions: Amino acid supplement, Placebo; Drug
Lead sponsor: Pennington Biomedical Research Center; Other
Eligibility: 18 Years to 70 Years
Enrollment: 16 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2012
U.S. locations: 1
States / cities: Baton Rouge, Louisiana

Conditions: Cyanotic Congenital Heart Disease, Anemia, Cyanosis, Congenital Heart Disease
Interventions: Epoetin Alfa and Iron, Iron; Drug
Lead sponsor: University of California, San Diego; Other
Eligibility: Up to 8 Weeks
Enrollment: 4 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2020
U.S. locations: 1
States / cities: San Diego, California

Conditions: Head and Neck Cancer, Cancer Survivorship, Treatment-related Muscle Loss, Physical Function
Interventions: Creatine Supplementation, Resistance Training; Dietary Supplement · Other
Lead sponsor: Medical University of South Carolina; Other
Eligibility: 18 Years and older
Enrollment: 30 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2029
U.S. locations: 1
States / cities: Charleston, South Carolina

Conditions: Oxidative Stress, Muscle Strength, Resistance Training, Body Composition, Muscle Damage
Interventions: Cross Training Course, Oceanix; Other · Dietary Supplement
Lead sponsor: Applied Science & Performance Institute; Industry
Eligibility: 18 Years to 45 Years
Enrollment: 18 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2020
U.S. locations: 1
States / cities: Tampa, Florida

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

Conditions: Sarcopenia
Interventions: Amino acids, Exercise; Dietary Supplement · Drug
Lead sponsor: The University of Texas Medical Branch, Galveston; Other
Eligibility: 65 Years to 85 Years
Enrollment: 108 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2009 – 2016
U.S. locations: 1
States / cities: Galveston, Texas

Search by objective public record fields.

A Randomized Controlled Trial of Thyroid Hormone Supplementation in Hemodialysis Patients

BCAA Supplementation for Concussion

Vitamin B6 Effects for Women Taking Birth Control Pills

CARNIVAL Study: Gut Flora Dependent Metabolism of Dietary CARNItine and Phosphatidylcholine and cardioVAscuLar Disease

Prospective L-arginine Study

Pea Protein Supplementation and Muscle Damage

Prehab and Creatine/Whey Supplementation in Frailty Among Patients With Cirrhosis

Essential Amino Acid Supplementation for Femoral Fragility Fractures

Creatine Supplementation in Concussion Recovery

Soy Supplements in Treating Patients Undergoing Surgery for Localized Prostate Cancer

The Effect of NADPH Oxidase and Creatine Supplementation on Microvascular Blood Flow Regulation

Phase 3 Triiodothyronine Supplementation for Infants After Cardiopulmonary Bypass

DECIDE: A Comparative Effectiveness Trial of Metformin Versus Insulin for the Treatment of Gestational Diabetes

2 Weeks of Citrulline Supplementation on Arterial Function in Postmenopausal Women With Elevated Blood Pressure or Hypertension

Nutritional Intervention in Children With Autism Using Whey Protein (Immunocal): Impact on Core Areas of Behavior

Enteral Glutamine in Critical Illness

Beta-alanine and Elder Endurance

Selenium Supplementation of Patients With Cirrhosis

Single Low-Dose of Supplement Amino Acid

Erythropoietin to Prevent Unnecessary Transfusions In Patients With Cyanotic CHD - A Prospective Control Trial

Resistance Training and Creatine Supplementation for Head and Neck Cancer

The Effects of Antioxidant Supplementation on Multiple Endurance Race Performance, Physiology, and Recovery.

Essential Amino Acid Supplementation in Adult Spinal Deformity Patients

Nutrition and Exercise for Sarcopenia