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Showing 1–24 of 1,943 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 Results available

Education Tools to Support Pediatric Survivor Care

NCT04257058
View directory record Official record
Conditions
Cancer, Pediatric Cancer
Interventions
Electronic educational material
Behavioral
Lead sponsor
Emory University
Other
Eligibility
18 Years to 25 Years
Enrollment
89 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated May 14, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 4 Interventional Results available

Evaluating Vitamin D3 Supplement on Post-Op Outcomes

NCT04177758
View directory record Official record
Conditions
Knee Osteoarthritis
Interventions
Vitamin D, Control
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 11, 2023 · Synced Jul 21, 2026, 11:19 AM EDT
Not listed Not applicable Interventional

Vitamin B6, B12, Folic Acid and Exercise in Parkinson's Disease

NCT01238926
View directory record Official record
Conditions
Parkinson's Disease
Interventions
PD vitamin supplementation, PD exercise intervention, PD vitamin + exercise
Dietary Supplement · Other
Lead sponsor
New York Institute of Technology
Other
Eligibility
50 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2010
U.S. locations
1
States / cities
Old Westbury, New York
Source: ClinicalTrials.gov public record
Updated Nov 10, 2010 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Spirulina Oral Supplement for Enhancing Host Resilience to Virus Infection

NCT05447078
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Immulina TM, Placebo
Drug · Dietary Supplement
Lead sponsor
University of Mississippi Medical Center
Other
Eligibility
18 Years and older
Enrollment
492 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2025
U.S. locations
1
States / cities
Jackson, Mississippi
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Anatabine on Elevated Blood Levels of C-reactive Protein

NCT01607619
View directory record Official record
Conditions
Inflammation
Interventions
Anatabine
Dietary Supplement
Lead sponsor
Roskamp Institute Inc.
Other
Eligibility
18 Years and older
Enrollment
117 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
3
States / cities
Sarasota, Florida • Flint, Michigan • Shelby, Michigan
Source: ClinicalTrials.gov public record
Updated Jan 27, 2013 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 4 Interventional Results available

Effect of Probiotic Supplementation on Endothelial Function

NCT01952834
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
GoodBelly Probiotic, Vancomycin
Dietary Supplement · Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
40 Years to 75 Years · Male only
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Milwauke, Wisconsin
Source: ClinicalTrials.gov public record
Updated Jan 20, 2016 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 1 Interventional

Investigating the Effect of Vitamin A Supplementation on Retinitis Pigmentosa

NCT00065455
View directory record Official record
Conditions
Retinitis Pigmentosa
Interventions
Vitamin A
Drug
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2009
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The RAMP Study - Rejuvenation of the Aging Microbiota With Prebiotics

NCT03690999
View directory record Official record
Conditions
Microbiome, Immune Function, Inflammation
Interventions
Placebo, Prebiotic supplement
Dietary Supplement
Lead sponsor
Stanford University
Other
Eligibility
60 Years and older
Enrollment
98 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 16, 2023 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Results available

The Effect of Hypovitaminosis D and Vitamin D Supplementation on Fracture Nonunion Rates

NCT01691833
View directory record Official record
Conditions
Hypovitaminosis D
Interventions
Vitamin D, Placebo
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years and older
Enrollment
113 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Charlotte, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 13, 2022 · Synced Jul 21, 2026, 11:19 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

The Effect of Vicia Faba Hydrolysate Supplementation on Muscle Strength Recovery

NCT06837298
View directory record Official record
Conditions
Muscle Damage, Muscle
Interventions
Placebo control capsules, PeptiStrong® supplement capsules with same appearance as placebo capsules, PeptiStrong® supplement capsules following muscle damaging exercise on Day 14
Other
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
18 Years to 45 Years
Enrollment
76 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Bradenton, Florida
Source: ClinicalTrials.gov public record
Updated Feb 19, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Terminated Phase 2 Interventional Accepts healthy volunteers Results available

Effects of Melatonin Supplementation on Renal Physiology in a Habitual Sleep Restricted Population.

NCT02631148
View directory record Official record
Conditions
Obesity, Prediabetic State
Interventions
Melatonin, Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 29, 2021 · Synced Jul 21, 2026, 11:19 AM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Hydrate Heroes for Improving Brain Function & Mood

NCT07241260
View directory record Official record
Conditions
Hydration Status
Interventions
Hydrate Heroes (6 packets), Hydrate Heroes (3 packets)
Dietary Supplement
Lead sponsor
University of South Florida
Other
Eligibility
18 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Folic Acid Supplementation in Women of Child Bearing Age

NCT01841658
View directory record Official record
Conditions
Obesity
Interventions
Folic acid
Dietary Supplement
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2016
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Jul 3, 2016 · Synced Jul 21, 2026, 11:19 AM EDT
Recruiting Not applicable Interventional

Maternal Probiotic Supplementation for Improved Outcomes in Infants of Diabetic Mothers

NCT05467150
View directory record Official record
Conditions
Infant of Diabetic Mother
Interventions
Probiotic Supplement
Dietary Supplement
Lead sponsor
University of Minnesota
Other
Eligibility
21 Years to 45 Years · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A New Paradigm for Vitamin D Sufficiency

NCT02969850
View directory record Official record
Conditions
New Biomarkers for Measuring Vitamin D Level
Interventions
Vitamin D Supplementation, Placebo, Calcium
Dietary Supplement · Other
Lead sponsor
NYU Langone Health
Other
Eligibility
60 Years to 90 Years · Female only
Enrollment
444 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Mineola, New York
Source: ClinicalTrials.gov public record
Updated Oct 21, 2021 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Exploratory Investigation of a Supplement to Promote Cognitive Health Benefits

NCT05523115
View directory record Official record
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
Source: ClinicalTrials.gov public record
Updated Nov 7, 2022 · Synced Jul 21, 2026, 11:19 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional

TRT as an Adjunctive ERAS Therapy in ESRD Patients Undergoing Kidney Transplantation

NCT07287800
View directory record Official record
Conditions
Hypogonadism, Male, End Stage Renal Disease (ESRD), Kidney Transplant
Interventions
Testosterone Replacement Therapy
Drug
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years and older · Male only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 16, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Phase 3 Interventional Results available

Clinical Safety Study of the Progesterone Vaginal Ring in Women Undergoing Assisted Reproductive Technology Procedures

NCT03565211
View directory record Official record
Conditions
Progesterone Supplementation in Women Undergoing ART
Interventions
Progesterone vaginal ring
Drug
Lead sponsor
Ferring Pharmaceuticals
Industry
Eligibility
18 Years to 34 Years · Female only
Enrollment
352 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
15
States / cities
Tempe, Arizona • Encino, California • Newark, Delaware + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 22, 2020 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessment of a Pre-Workout Dietary Supplement

NCT02952014
View directory record Official record
Conditions
Dietary Modification
Interventions
C4 Extreme, C4 Extreme (without Advantra Z, Placebo
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 40 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Nov 1, 2016 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Trial to Investigate the Efficacy of the Brain Blossom Supplement to Improve Cognitive Function and Memory

NCT07564804
View directory record Official record
Conditions
Cognitive Function, Memory, Cognitive Decline
Interventions
Dietary Supplement: Brain Blossom, Placebo
Dietary Supplement
Lead sponsor
Bio Nature Health
Industry
Eligibility
50 Years to 70 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated May 3, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Not yet recruiting Not applicable Interventional

Study to Evaluate Xtressé Gummy Supplement in Men With Androgenic Alopecia

NCT07637071
View directory record Official record
Conditions
Androgenic Alopecia, Hair Loss/Baldness, Hair Thinning
Interventions
Xtressé Hair Growth Gummies
Other
Lead sponsor
Restore Biologics Holdings, Inc. dba Xtressé
Industry
Eligibility
18 Years to 65 Years · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
2
States / cities
Maitland, Florida • Port Orange, Florida
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Jul 21, 2026, 11:19 AM EDT
Recruiting Phase 1 Interventional

A Placebo-controlled, Randomized Clinical Trial to Assess the Safety, Feasibility, and Pharmacokinetics of Microbiota Transplant Therapy With Antibiotic Preconditioning and Fiber Supplementation in Patients With Pulmonary Arterial Hypertension

NCT06481852
View directory record Official record
Conditions
Pulmonary Arterial Hypertension
Interventions
MTT with antibiotic preconditioning + fiber supplementation, MTT with antibiotic preconditioning + placebo supplementation, MTT with placebo + placebo supplementation.
Drug · Other
Lead sponsor
University of Minnesota
Other
Eligibility
18 Years to 75 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
Minneapolis, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Early Phase 1 Interventional

Nitrate Supplementation and Cerebrovascular and Cognitive Function in Metabolic Syndrome

NCT05532423
View directory record Official record
Conditions
Metabolic Syndrome
Interventions
Beetroot Juice - Active, beetroot juice - Placebo
Drug
Lead sponsor
Penn State University
Other
Eligibility
55 Years to 75 Years
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 5, 2025 · Synced Jul 21, 2026, 11:19 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

LIFEHOUSE: Description of the Tent Bucket -Immune Support

NCT04734288
View directory record Official record
Conditions
Immune Response
Interventions
Vit.D3 5000 IU, Immune Active
Dietary Supplement
Lead sponsor
Metagenics, Inc.
Industry
Eligibility
18 Years to 69 Years
Enrollment
7 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Gig Harbor, Washington
Source: ClinicalTrials.gov public record
Updated Oct 29, 2023 · Synced Jul 21, 2026, 11:19 AM EDT