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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Nutritional Supplementation Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Multi-Ingredient Dietary Supplement on Blood and Breath Alcohol Levels

NCT06106620
View directory record Official record
Conditions
Alcohol Drinking
Interventions
Placebo, Safety Shot
Dietary Supplement
Lead sponsor
The Center for Applied Health Sciences, LLC
Industry
Eligibility
21 Years to 55 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Canfield, Ohio
Source: ClinicalTrials.gov public record
Updated May 15, 2024 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Effect of Chewing a Calcium Supplement Before Fluoride Rinse on Salivary Fluoride

NCT04620252
View directory record Official record
Conditions
Dental Caries
Interventions
Inactive supplement, Tricalcium phosphate supplement, Calcium carbonate supplement, Calcium citrate supplement, Inactive supplement and fluoride mouthwash, Calcium carbonate supplement and fluoride mouthwash, Calcium citrate supplement and fluoride mouthwash
Drug
Lead sponsor
University of Michigan
Other
Eligibility
18 Years to 99 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated May 8, 2022 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Study to See if Platelet Transfusion Stop or Lessen the Effect of the Drug on Platelets

NCT01744288
View directory record Official record
Conditions
Inhibition on Platelet Aggregation
Interventions
Ticagrelor, Clopidogrel, ASA
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 50 Years
Enrollment
258 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Overland Park, Kansas
Source: ClinicalTrials.gov public record
Updated Apr 23, 2014 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Beta-glucan and Immune Response to Influenza Vaccine

NCT05074303
View directory record Official record
Conditions
Healthy Aging
Interventions
Influenza Vaccine, Beta-glucan, Placebo
Biological · Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
50 Years to 100 Years
Enrollment
78 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Zinc Supplementation in Alcoholic Cirrhosis

NCT02072746
View directory record Official record
Conditions
Alcoholic Cirrhosis
Interventions
Zinc, Placebo
Dietary Supplement
Lead sponsor
University of Louisville
Other
Eligibility
18 Years to 75 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2019
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Mar 21, 2021 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Crossover Clinical Trial Investigating the Effects of Geranylgeraniol (GG) Supplementation on Testosterone Levels in Healthy Men and Women Over an 18-week Period

NCT06747624
View directory record Official record
Conditions
Wellness, Health
Interventions
Geranylgeraniol 300 mg, Placebo
Dietary Supplement
Lead sponsor
Designs for Health
Industry
Eligibility
40 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Palm Coast, Florida
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Short Term Choline and Cardiovascular Health

NCT03327805
View directory record Official record
Conditions
Cardiovascular Risk Factor
Interventions
Choline, Placebo
Dietary Supplement
Lead sponsor
Virginia Polytechnic Institute and State University
Other
Eligibility
18 Years to 65 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2023
U.S. locations
1
States / cities
Blacksburg, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Jul 22, 2026, 2:19 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

A Study to Evaluate a Postbiotic in Supporting Weight Loss and Metabolic Health

NCT06911073
View directory record Official record
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
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 8, 2025 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Nutritional Supplement, Eccentric Exercise and Recovery

NCT01444170
View directory record Official record
Conditions
Injury, Inflammation
Interventions
dicreatinol sulfate, placebo sugar pill
Dietary Supplement · Drug
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 25 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 14, 2019 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Potential Synergistic Effect of Combined Blood Flow Restriction Training and Betaine Supplementation on Skeletal Muscle

NCT05790070
View directory record Official record
Conditions
Blood Flow Restriction Training, Betaine Supplementation
Interventions
Betaine, Placebo
Dietary Supplement · Other
Lead sponsor
Baylor University
Other
Eligibility
18 Years to 35 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Waco, Texas
Source: ClinicalTrials.gov public record
Updated Mar 28, 2023 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional

The Post-Vitrectomy Lenstatin™ Study

NCT02131194
View directory record Official record
Conditions
Cataract, Nuclear Progressive
Interventions
Lenstatin, Placebo
Dietary Supplement · Drug
Lead sponsor
Lenstatin LLC
Industry
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Wilmington, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 3, 2015 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional

Intra Hemodialytic Oral Protein and Exercise (IHOPE)

NCT01234441
View directory record Official record
Conditions
Kidney Diseases
Interventions
Control, Protein, Protein + Exercise
Dietary Supplement · Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
30 Years to 80 Years
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2018
U.S. locations
2
States / cities
Chicago, Illinois • Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 31, 2018 · Synced Jul 22, 2026, 2:19 AM EDT
Recruiting Not applicable Interventional

Copper Supplementation in Cirrhosis

NCT07471542
View directory record Official record
Conditions
Cirrhosis, Chronic Liver Disease, Fibrosis, Infection
Interventions
Copper Gluconate
Dietary Supplement
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 12, 2026 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluate Effects of Sprinkled Format REDUCOSE in a Carbohydrate-rich, Mixed Meal on Post-prandial Glycemia

NCT04877366
View directory record Official record
Conditions
Dietary Supplement
Interventions
Dietary Supplement: Sprinkled Format REDUCOSE., Reference control, Active comparator
Dietary Supplement · Other
Lead sponsor
Société des Produits Nestlé (SPN)
Industry
Eligibility
19 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Tustin, California
Source: ClinicalTrials.gov public record
Updated Oct 14, 2024 · Synced Jul 22, 2026, 2:19 AM EDT
Terminated Not applicable Interventional Results available

Vitamin D Supplementation Requirement in Obese Subjects

NCT00996866
View directory record Official record
Conditions
Vitamin D Deficiency
Interventions
Vitamin D3, placebo
Drug
Lead sponsor
Winthrop University Hospital
Other
Eligibility
18 Years to 70 Years
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2013
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Jul 2, 2023 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

How Does Iron Supplementation Affect Training and Performance in Female Collegiate Rowers?

NCT01383798
View directory record Official record
Conditions
Iron Deficiency (Without Anemia)
Interventions
Placebo, Ferrous sulfate
Dietary Supplement
Lead sponsor
Cornell University
Other
Eligibility
18 Years to 30 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Ithaca, New York
Source: ClinicalTrials.gov public record
Updated Mar 13, 2014 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Not applicable Interventional

Strength Testing After Nitrate Delivery (STAND) in ICU Patients

NCT02293616
View directory record Official record
Conditions
Respiratory Failure
Interventions
Nitrate Rich Beetroot Juice, Placebo
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
56 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 17, 2018 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Can Biotin Supplementation be Used to Mask hCG Abuse?

NCT05450900
View directory record Official record
Conditions
Healthy
Interventions
Choriogonadotropin Alpha, biotin, Microcellulose filler
Drug · Dietary Supplement · Other
Lead sponsor
Sports Medicine Research and Testing Laboratory
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Effect of Vitamin D Supplementation on Endothelial Function in Obese Adolescents

NCT01746264
View directory record Official record
Conditions
Obesity, Endothelial Dysfunction, Vitamin D Deficiency
Interventions
Vitamin D3
Dietary Supplement
Lead sponsor
Mayo Clinic
Other
Eligibility
12 Years to 18 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated May 1, 2016 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Phase 2 Interventional Results available

Sulforaphane to Reduce Symptoms of Schizophrenia

NCT02810964
View directory record Official record
Conditions
Schizophrenia, Schizoaffective Disorder
Interventions
Sulforaphane Nutraceutical, Identical-appearing Placebo
Drug
Lead sponsor
Sheppard Pratt Health System
Other
Eligibility
18 Years to 65 Years
Enrollment
64 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
1
States / cities
Towson, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 26, 2021 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Phase 2 Interventional

Zinc Supplements in Lowering Cadmium Levels in Smokers

NCT00376987
View directory record Official record
Conditions
Bladder Cancer, Cervical Cancer, Esophageal Cancer, Gastric Cancer, Head and Neck Cancer, Kidney Cancer, Leukemia, Liver Cancer, Lung Cancer, Pancreatic Cancer, Tobacco Use Disorder
Interventions
zinc oxide
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
21 Years to 120 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2015
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated May 29, 2017 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Safety and Dose Escalation Study of Zinc Supplementation in Critically Ill Children

NCT01062009
View directory record Official record
Conditions
Critical Illness
Interventions
Zinc sulfate
Drug
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
30 Days to 10 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Aug 19, 2019 · Synced Jul 22, 2026, 2:19 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

A Randomized Double Blind, Placebo Controlled Clinical Study Evaluating the Efficacy and Safety of Magnesium Supplementation on Relaxation in Adults

NCT07029607
View directory record Official record
Conditions
Healthy
Interventions
Placebo, Dietary Supplement with actives
Dietary Supplement
Lead sponsor
Olly, PBC
Industry
Eligibility
18 Years to 50 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
St. Petersburg, Florida
Source: ClinicalTrials.gov public record
Updated Jun 18, 2025 · Synced Jul 22, 2026, 2:19 AM EDT
Completed Phase 2 Interventional

Effectiveness of Extended Treatment for Drug Dependence (ETDD) in the City Study

NCT01153464
View directory record Official record
Conditions
Cocaine Dependence
Interventions
Recovery Support Counseling
Behavioral
Lead sponsor
University of Pennsylvania
Other
Eligibility
18 Years to 75 Years
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 29, 2017 · Synced Jul 22, 2026, 2:19 AM EDT