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ClinicalTrials.gov public records Last synced Oct 3, 2026, 5:09 AM EDT

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Showing 217–240 of 5,612 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Dietary Supplement Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Comparison of 25-hydroxy Vitamin D Level in Caucasian Women Receiving Vitamin D Supplementation and Not Receiving Supplementation: a Randomized Controlled Trial.

NCT00882505
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
vitamin D, Placebo
Dietary Supplement · Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years to 47 Years · Female only
Enrollment
67 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 2, 2021 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Resistance Exercise Plus Vinegar Ingestion on Biomarkers in Healthy Adults

NCT06437405
View directory record Official record
Conditions
LPS, Mood Disorders, Cognitive Change
Interventions
Vinegar liquid, vinegar pill
Dietary Supplement
Lead sponsor
Arizona State University
Other
Eligibility
18 Years to 60 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Apr 9, 2025 · Synced Oct 3, 2026, 5:09 AM EDT
Recruiting Phase 1Phase 2 Interventional

Protective Effects of the Nutritional Supplement Sulforaphane on Doxorubicin-Associated Cardiac Dysfunction

NCT03934905
View directory record Official record
Conditions
Anthracycline Related Cardiotoxicity in Breast Cancer
Interventions
sulforaphane, Placebo Oral Tablet
Drug
Lead sponsor
Texas Tech University Health Sciences Center
Other
Eligibility
18 Years to 89 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of the Inno Cleanse Dietary Supplement on Gut Health and Associated Variables in Healthy Men and Women

NCT07215351
View directory record Official record
Conditions
Constipation, Bloating
Interventions
Dietary supplement for digestive health, placebo capsule
Dietary Supplement
Lead sponsor
University of Memphis
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Memphis, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional

Trial of Carbamylation in Renal Disease-Modulation With Amino Acid Therapy

NCT02472834
View directory record Official record
Conditions
End Stage Renal Failure on Dialysis
Interventions
Amino acid supplementation NephrAmine®
Dietary Supplement
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 24, 2021 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional

Probiotic Supplementation on Weight Loss

NCT03832439
View directory record Official record
Conditions
Bariatric Surgery Candidate
Interventions
Probiotic, microcrystalline cellulose
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 21, 2022 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional

The Effect of Coffee After Resection of Small Bowel

NCT03143621
View directory record Official record
Conditions
Postoperative Ileus
Interventions
Coffee, Water
Dietary Supplement · Other
Lead sponsor
Mount Carmel Health System
Other
Eligibility
18 Years to 100 Years
Enrollment
79 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 16, 2023 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Phase 2 Interventional Results available

Safety, Feasibility and Efficacy of Sulforaphane (Avmacol Extra Strength) in Chronic Kidney Disease

NCT05797506
View directory record Official record
Conditions
Chronic Kidney Disease Stage 3, Chronic Kidney Disease Stage 4
Interventions
Sulforaphane (Avmacol Extra Strength), Placebo
Drug · Dietary Supplement
Lead sponsor
University of Rochester
Other
Eligibility
18 Years to 80 Years
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Rochester, New York
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Magnesium Supplementation on Body Composition

NCT06703099
View directory record Official record
Conditions
Body Composition Changes
Interventions
Magnesium Supplementation
Dietary Supplement
Lead sponsor
Nova Southeastern University
Other
Eligibility
18 Years to 30 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Davie, Florida
Source: ClinicalTrials.gov public record
Updated Jun 6, 2025 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional Results available

Evaluation of Vitamin D in Women With PCOS and Sexual Dysfunction

NCT02865187
View directory record Official record
Conditions
Female Sexual Dysfunction, Polycystic Ovary Syndrome
Interventions
Vitamin D, Hormonal contraception
Dietary Supplement · Drug
Lead sponsor
Wright State University
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
2
States / cities
Dayton, Ohio • Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 25, 2022 · Synced Oct 3, 2026, 5:09 AM EDT
Not listed Not applicable Interventional

Changes in Microbiota and Quality of Life in IBS

NCT05266287
View directory record Official record
Conditions
IBS - Irritable Bowel Syndrome
Interventions
a supplement containing 2'-fucosyllactose (2'-FL), Placebo Supplement
Dietary Supplement
Lead sponsor
National University of Natural Medicine
Other
Eligibility
18 Years to 70 Years
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Mar 24, 2023 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Intervention for Visceral Adiposity

NCT01350518
View directory record Official record
Conditions
Obesity
Interventions
Benefiber, TrueLemon
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
20 Years to 50 Years · Female only
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 28, 2018 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Vitamin C Enriched Hydrolyzed Collagen, PrimaColl™, Whey Protein, or Placebo on Collagen Synthesis

NCT05427279
View directory record Official record
Conditions
Effect of Food Supplement
Interventions
Placebo, Hydrolized Collagen, PrimaColl, Whey protein
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 30 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated May 8, 2026 · Synced Oct 3, 2026, 5:09 AM EDT
Not listed Not applicable Interventional

Hepaxa Management of Non-alcoholic Fatty Liver Disease

NCT03801577
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease, Non Alcoholic Fatty Liver, NASH - Nonalcoholic Steatohepatitis
Interventions
Hepaxa
Dietary Supplement
Lead sponsor
BASF AS
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
Flowood, Mississippi
Source: ClinicalTrials.gov public record
Updated Jan 11, 2019 · Synced Oct 3, 2026, 5:09 AM EDT
Active, not recruiting Not applicable Interventional

The Impact of Whey Protein on Frailty in Older Adults Classified as Pre-frail

NCT07167277
View directory record Official record
Conditions
Pre-frail, Pre-Frail Older Adults, Cognition, Physical Function, Dietary Intake Assessment, MRI
Interventions
Whey Protein, Placebo
Dietary Supplement
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
65 Years to 85 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Folate on Colon and Blood Cells

NCT00220012
View directory record Official record
Conditions
Subjects Will Have a Pre-cancerous Colorectal Polyp, Family Member Has History of Colorectal Adenoma of Adenocarcinoma
Interventions
Folate depletion and supplementation
Procedure
Lead sponsor
Rockefeller University
Other
Eligibility
40 Years to 72 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2008
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 15, 2013 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Phase 2 Interventional Results available

Fatty Acid Supplementation in Children With ASD

NCT03550209
View directory record Official record
Conditions
Autism Spectrum Disorder
Interventions
LCPUFA Oil Supplement, Canola Oil Placebo
Drug · Dietary Supplement
Lead sponsor
Sarah Keim
Other
Eligibility
2 Years to 6 Years
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 3, 2021 · Synced Oct 3, 2026, 5:09 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Metabolomic Analysis of the Impacts of Hydration Status on Exercise Performance

NCT02486224
View directory record Official record
Conditions
Dehydration, Physical Exertion, Salivary Osmolar Concentration, Urinary Osmolar Concentration
Interventions
Kona Deep, Spring Water, Sports Drink
Dietary Supplement
Lead sponsor
University of Arizona
Other
Eligibility
20 Years to 25 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2020
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Oct 14, 2021 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional

A Nutritional Intervention for Diabetic Neuropathy

NCT01690962
View directory record Official record
Conditions
Diabetic Neuropathy
Interventions
Vegan diet and vitamin B12 supplement, Vitamin B12 supplement
Other · Dietary Supplement
Lead sponsor
Physicians Committee for Responsible Medicine
Other
Eligibility
18 Years to 65 Years
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Sep 4, 2014 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Human Pilot Study - HA35 (Hyaluronan Molecular Weight 35) Dietary Supplement for Promoting Intestinal Health

NCT02867605
View directory record Official record
Conditions
Gastrointestinal Microbiome
Interventions
Hyaluronan
Dietary Supplement
Lead sponsor
The Cleveland Clinic
Other
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 3, 2020 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Efficacy Study of AlphaBRAIN Administered Orally

NCT02739139
View directory record Official record
Conditions
Cognitive Functioning
Interventions
AlphaBrain
Dietary Supplement
Lead sponsor
Onnits Labs, LLC
Industry
Eligibility
18 Years to 35 Years
Enrollment
73 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Chestnut Hill, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 15, 2016 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional

Effect of Agave Syrup, Placebo, and No Treatment on Nocturnal Cough and Sleep Quality for Coughing Infants/Toddlers and Their Parents

NCT01721395
View directory record Official record
Conditions
Cough
Interventions
Agave Syrup
Dietary Supplement
Lead sponsor
Penn State University
Other
Eligibility
2 Months to 48 Months
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Hershey, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Oct 23, 2015 · Synced Oct 3, 2026, 5:09 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Age on Amino Acid Delivery to Tendon

NCT04064528
View directory record Official record
Conditions
Aging
Interventions
Amino Acids
Dietary Supplement
Lead sponsor
Purdue University
Other
Eligibility
21 Years to 75 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Dec 14, 2023 · Synced Oct 3, 2026, 5:09 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Continuous Yogurt Intake on Immunomodulatory Function and Subjective Health Status in Healthy U.S. Adults

NCT07799207
View directory record Official record
Conditions
Immune Function
Interventions
Yogurt drink, Acidified lactic beverage
Dietary Supplement
Lead sponsor
Meiji Co., Ltd.
Industry
Eligibility
18 Years to 65 Years
Enrollment
118 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 3, 2026, 5:09 AM EDT