Independent directory Public ClinicalTrials.gov records United States
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ClinicalTrials.gov public records Last synced Sep 2, 2026, 8:08 AM EDT

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Showing 1–24 of 26 matching trials from the live ClinicalTrials.gov search.
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Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of S. Boulardii and Amoxicillin/Clavulanate on Gut Microbiota

NCT01473368
Conditions
Healthy Volunteers
Interventions
Saccharomyces boulardii, Amoxicillin Clavulanate
Dietary Supplement · Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 65 Years
Enrollment
53 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Boston, Massachusetts
Completed Not applicable Interventional Accepts healthy volunteers

Enhanced Natural Killer Cell Activity and RBAC

NCT02019628
Conditions
Family Member
Interventions
Rice Bran Arabinoxylan Compound (RBAC)
Dietary Supplement
Lead sponsor
University of Miami
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
1
States / cities
Miami, Florida
Conditions
Healthy
Interventions
Potassium Supplement, Furosemide 20 MG, Compression Garment
Drug · Device
Lead sponsor
National Aeronautics and Space Administration (NASA)
Federal
Eligibility
25 Years to 55 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Houston, Texas
Conditions
Diabetes Mellitus, Type 1, Diabetic Ketoacidosis
Interventions
Glargine, IV insulin, Electrolyte Correction, Correction of Fluid Loss
Drug · Other
Lead sponsor
Chattanooga-Hamilton County Hospital Authority
Other
Eligibility
1 Year to 21 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Chattanooga, Tennessee
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effect of a Dietary Supplement on Quality of Life

NCT05323084
Conditions
Quality of Life
Interventions
Dietary supplement
Dietary Supplement
Lead sponsor
Pennington Biomedical Research Center
Other
Eligibility
50 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Baton Rouge, Louisiana
Conditions
Calcium Phosphate Kidney Stones
Interventions
OHCit- standard dose, Potassium Citrate, Placebo, OHCit- low dose
Dietary Supplement · Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 99 Years
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
1
States / cities
Dallas, Texas
Completed Not applicable Interventional Accepts healthy volunteers

A Trial of the Ideal Protein System Versus Low Fat Diet for Weight Loss

NCT03515889
Conditions
Weight Loss
Interventions
Ideal Protein Weight Loss Method, Standard Weight Loss
Behavioral
Lead sponsor
Tulane University
Other
Eligibility
22 Years to 79 Years
Enrollment
192 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Bogalusa, Louisiana
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Salt Loading and Thiazide Intervention Study

NCT00896389
Conditions
Hypertension
Interventions
Salt loading, Hydrochlorothiazide (HCTZ)
Procedure · Drug
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years to 65 Years
Enrollment
124 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2013
U.S. locations
1
States / cities
Lancaster, Pennsylvania
Completed Phase 4 Interventional Accepts healthy volunteers Results available

A Study Evaluating Quality of Life Parameters Following Use of Emergen-C

NCT06654089
Conditions
Dietary Supplements
Interventions
Emergen-C Core Super Orange Powder, Placebo
Dietary Supplement
Lead sponsor
HALEON
Industry
Eligibility
18 Years to 64 Years
Enrollment
299 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
New York, New York
Conditions
Poor Energy Levels, Poor Metabolism, Difficulty With Weight Management, Bloating
Interventions
Love Wellness Energize
Dietary Supplement
Lead sponsor
Love Wellness
Industry
Eligibility
25 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Las Vegas, Nevada
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Phosphorus Additives on the Metabolome in Healthy Adults

NCT03841786
Conditions
Metabolic Syndrome, Insulin Sensitivity, Cardiovascular Diseases
Interventions
Phosphorus-supplemented study diet, Control Diet
Other
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Birmingham, Alabama
Conditions
Shock, Septic
Interventions
Lactated Ringer, Normal saline
Drug
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
6 Months to 17 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Conditions
Hypertension
Interventions
KMgCit, Placebo
Drug
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years and older
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2032
U.S. locations
1
States / cities
Dallas, Texas
Conditions
Borderline Hypokalemia
Interventions
K+ supplement, Placebo
Drug
Lead sponsor
Duke University
Other
Eligibility
30 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Durham, North Carolina
Conditions
Metabolic Health, Elevated Liver Enzymes, Digestive Symptoms
Interventions
Plant-Based Liquid Supplement
Dietary Supplement
Lead sponsor
Biocol Labs
Industry
Eligibility
40 Years to 60 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Conditions
Gut Health, Bloating, Irregular Bowel Movements, Gastrointestinal Symptoms
Interventions
Active Supplement, Placebo Comparator
Dietary Supplement
Lead sponsor
Belli Welli Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Las Vegas, Nevada
Conditions
Anxiety, Stress, Memory Deficits, Cortisol Overproduction
Interventions
Heights Smart Supplement
Dietary Supplement
Lead sponsor
Heights
Industry
Eligibility
21 Years to 70 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Santa Monica, California
Completed Not applicable Interventional Accepts healthy volunteers

Curves 30/30 Study

NCT04344821
Conditions
Weight Loss
Interventions
Curves Calcium, Placebo
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
College Station, Texas
Conditions
Osteoarthritis
Interventions
Ensure
Dietary Supplement
Lead sponsor
NYU Langone Health
Other
Eligibility
55 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
2
States / cities
New York, New York • Philadelphia, Pennsylvania
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Inorganic Nitrate Supplement on Blood Pressure

NCT03909789
Conditions
Blood Pressure, Endothelial Dysfunction
Interventions
Plant based bioequivalent Nitrate supplementation, Placebo
Dietary Supplement
Lead sponsor
Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center
Other
Eligibility
40 Years to 75 Years
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Torrance, California
Conditions
Hypertensive Disease
Interventions
Potassium control diet, Potassium gluconate diet, Potato Diet, French Fries Diet
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
21 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2018
U.S. locations
1
States / cities
West Lafayette, Indiana
Conditions
Obesity and Overweight
Interventions
Postbiotic, Placebo
Dietary Supplement
Lead sponsor
ResBiotic Nutrition, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Birmingham, Alabama
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

The Potassium Supplementation Study

NCT05887622
Conditions
Cardiovascular Health, Cardiovascular Risk Factor
Interventions
Potassium chloride supplement, Placebo
Dietary Supplement
Lead sponsor
University of Delaware
Other
Eligibility
18 Years to 45 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Newark, Delaware
Conditions
Skin Abnormalities
Interventions
Tea, Serum, Moisturizer
Dietary Supplement · Other
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
18 Years to 55 Years · Female only
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
Sacramento, California