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ClinicalTrials.gov public records Last synced Oct 27, 2026, 2:30 PM EDT

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Showing 1–24 of 85 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Antioxidant supplement Clear all
Terminated Not applicable Interventional Accepts healthy volunteers

Effect of Selenium Intervention on Inflammation in Older Adults

NCT01289925
View directory record Official record
Conditions
Inflammation
Interventions
Selenium, Sugar Pill Placebo
Dietary Supplement · Other
Lead sponsor
Johns Hopkins University
Other
Eligibility
70 Years to 110 Years
Enrollment
182 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2012
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 9, 2018 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional

Functional Medicine in Asthma (FAst) Study

NCT02808689
View directory record Official record
Conditions
Asthma
Interventions
Lifestyle Factors, Customized use of Dietary Supplements, Currently Accepted Asthma Care Guidelines
Behavioral · Other
Lead sponsor
The Cleveland Clinic
Other
Eligibility
19 Years to 65 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Apr 1, 2021 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Phase 2 Interventional Results available

Cognitive Impact of Pomegranate Polyphenols Following Ischemic Stroke

NCT02442804
View directory record Official record
Conditions
Stroke
Interventions
POMx, Placebo
Dietary Supplement · Other
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years to 89 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2016
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Aug 2, 2017 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Acquiring and Targeting Heat Exposures Necessary for Action

NCT05678738
View directory record Official record
Conditions
Heat Intolerance, Heat Stress, Fatigue; Heat
Interventions
Antioxidant Berry Supplementation, Acute and Chronic Exercise-Heat Stress, Placebo (non-juice) Supplementation
Dietary Supplement · Other
Lead sponsor
University of Connecticut
Other
Eligibility
18 Years to 50 Years
Enrollment
108 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Storrs, Connecticut
Source: ClinicalTrials.gov public record
Updated Sep 11, 2025 · Synced Oct 27, 2026, 2:30 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Long-term COVID and Rehabilitation

NCT05373043
View directory record Official record
Conditions
Long-COVID
Interventions
Mitoquinone, Placebo
Dietary Supplement
Lead sponsor
VA Office of Research and Development
Federal
Eligibility
18 Years and older
Enrollment
300 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2028
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 30, 2026 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of 6-week Strawberry Supplementation on Insulin Action (STR2)

NCT01457612
View directory record Official record
Conditions
Insulin Resistance, Nutritional Disease, Metabolic Disease
Interventions
Strawberry, Placebo1, Placebo2
Dietary Supplement
Lead sponsor
Clinical Nutrition Research Center, Illinois Institute of Technology
Industry
Eligibility
18 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 8, 2023 · Synced Oct 27, 2026, 2:30 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

A Randomized, Double-Blind Study to Assess the Effect of a Postbiotic on Oxidative Stress and Exercise Performance

NCT06795425
View directory record Official record
Conditions
Oxidative Stress, Healthy, Exercise-induced Muscle Damage, Exercise-induced Muscle Soreness, Immune Function, Gut Health, Microbiome Analysis, Exercise Performance, Exercise Metabolism
Interventions
Postbiotic Active Lifestyle Blend, Placebo
Dietary Supplement · Other
Lead sponsor
Lindenwood University
Other
Eligibility
18 Years to 45 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Saint Charles, Missouri
Source: ClinicalTrials.gov public record
Updated Jan 28, 2025 · Synced Oct 27, 2026, 2:30 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Lifestyle and Fertility Study on Antioxidant Status, Diet and Early Pregnancy

NCT00642590
View directory record Official record
Conditions
Infertility, Pregnancy, Fertility, Nutrition, Life Style
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 39 Years
Enrollment
266 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2020
U.S. locations
2
States / cities
Concord, New Hampshire • University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Oct 27, 2026, 2:30 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Sabroxy® Supplementation on Insulin Resistance and Cognitive Function in Adults With Mild Cognitive Impairment and Insulin Resistance

NCT07220694
View directory record Official record
Conditions
Insulin Resistance, Mild Cognitive Impairment, Cognitive Decline, Neurodegenerative Disorders
Interventions
Sabroxy®, Placebo
Dietary Supplement · Other
Lead sponsor
SF Research Institute, Inc.
Network
Eligibility
40 Years to 80 Years
Enrollment
140 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tolerance and Palatability of 10-day Supplementation With Hemp Oil, Calamari Oil, and Broccoli Extract in Healthy Adults

NCT06081140
View directory record Official record
Conditions
Diet, Healthy
Interventions
Standard Process Hemp Oil Complex
Dietary Supplement
Lead sponsor
Standard Process Inc.
Industry
Eligibility
18 Years to 75 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Oct 13, 2023 · Synced Oct 27, 2026, 2:30 PM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

BMI-based Vitamins in Obese Pregnant Women

NCT02802566
View directory record Official record
Conditions
Obesity
Interventions
BMI-based prenatal vitamin, Standard prenatal vitamin
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
146 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 10, 2024 · Synced Oct 27, 2026, 2:30 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Effects of Oral Supplement Containing L-Histidine and Antioxidants on the Skin Barrier Function and Systemic Inflammation in Rosacea

NCT06072066
View directory record Official record
Conditions
Rosacea, Systemic Inflammation
Interventions
Skin Barrier Oral Supplement
Dietary Supplement
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
30 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Aug 27, 2024 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional Results available

The Effects of an Antioxidant Formulation on Ocular Blood Flow

NCT01930487
View directory record Official record
Conditions
Primary Open Angle Glaucoma
Interventions
dietary supplement with antioxidants, Placebo
Dietary Supplement
Lead sponsor
ScienceBased Health
Industry
Eligibility
30 Years to 70 Years
Enrollment
47 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2015
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated Dec 5, 2016 · Synced Oct 27, 2026, 2:30 PM EDT
Enrolling by invitation Not applicable Interventional

PET-MRI in Chronic Traumatic Brain Injury (CTBI)

NCT03241732
View directory record Official record
Conditions
Chronic Traumatic Brain Injury
Interventions
Anti-inflammatory Diet, N-acetyl Cysteine, Neuro Emotive Technique
Other · Dietary Supplement · Behavioral
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years to 80 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
2
States / cities
Philadelphia, Pennsylvania • Villanova, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jul 29, 2025 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Short Term Effects of Oceanix Supplementation on Recovery

NCT04315077
View directory record Official record
Conditions
Oxidative Stress, Muscle Strength, Resistance Training, Muscle Damage, Immune Suppression
Interventions
Oceanix®, Resistance Training
Dietary Supplement · Other
Lead sponsor
Applied Science & Performance Institute
Industry
Eligibility
18 Years to 45 Years
Enrollment
22 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Nov 19, 2020 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Enhancing Treatment of Iron Deficiency and Iron Deficiency Anemia With an Antioxidant, Vitamin E

NCT01700426
View directory record Official record
Conditions
Iron Deficiency, Iron Deficiency Anemia
Interventions
Vitamin E, Placebo
Drug · Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
9 Months to 2 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2013
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 27, 2014 · Synced Oct 27, 2026, 2:30 PM EDT
Not yet recruiting Not applicable Interventional

Feru-guard and General Antioxidant Capacity in Older People

NCT07801521
View directory record Official record
Conditions
Healthy Elder People
Interventions
Feru-guard, Placebo
Dietary Supplement · Other
Lead sponsor
Oregon Health and Science University
Other
Eligibility
65 Years to 89 Years
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 3, 2026 · Synced Oct 27, 2026, 2:30 PM EDT
Recruiting Phase 2 Interventional Accepts healthy volunteers

Effects of an Antioxidant Supplement on Blood Vessel Health

NCT06424756
View directory record Official record
Conditions
Healthy
Interventions
MitoQ, Placebo, MitoTempo, Tempol, L-NAME, SNP - Sodium Nitroprusside
Dietary Supplement · Drug
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2030
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 9, 2024 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Phase 1Phase 2 Interventional

Safety and Efficacy of an Antioxidant-rich Multivitamin Supplement in Cystic Fibrosis

NCT01018303
View directory record Official record
Conditions
Cystic Fibrosis
Interventions
AquADEK
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
10 Years to 40 Years
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Oct 15, 2012 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional Results available

Glutathione Metabolism in Adolescents With Type 1 Diabetes - Study B

NCT00858273
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Antioxidant supplement, Diabetes treatment, Regular Insulin
Dietary Supplement · Other · Drug
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
12 Years to 21 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 17, 2023 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional

The Effects of Micronutrients in Combination With Usual Care in Type 2 Diabetes

NCT01738802
View directory record Official record
Conditions
Type 2 Diabetes
Interventions
Anti-oxidant and micronutrient, Placebo
Dietary Supplement · Drug
Lead sponsor
Walter Reed National Military Medical Center
Federal
Eligibility
50 Years and older
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
2
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 28, 2016 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of Changes in Skin Carotenoid Scores in Medical Students Following a Dietary Supplement-based Intervention

NCT02464787
View directory record Official record
Conditions
Health Behavior
Interventions
LifePak Nano
Dietary Supplement
Lead sponsor
Texas Tech University Health Sciences Center
Other
Eligibility
18 Years to 89 Years
Enrollment
42 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Aug 14, 2020 · Synced Oct 27, 2026, 2:30 PM EDT
Not listed Phase 1 Interventional

Biofeedback and Hydrogen Water as Treatments for Chronic Fatigue Syndrome

NCT05397626
View directory record Official record
Conditions
Chronic Fatigue Syndrome
Interventions
Heart Rhythm Biofeedback, Hydrogen Water, Combined treatment: Heart rhythm biofeedback plus hydrogen water
Behavioral · Dietary Supplement · Combination Product
Lead sponsor
Stony Brook University
Other
Eligibility
18 Years to 65 Years
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Stony Brook, New York
Source: ClinicalTrials.gov public record
Updated May 31, 2022 · Synced Oct 27, 2026, 2:30 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Plant Concentrate Blend on Oxidative Stress in Healthy Humans

NCT02213588
View directory record Official record
Conditions
Healthy
Interventions
AOX blend, Placebo
Dietary Supplement
Lead sponsor
Access Business Group
Industry
Eligibility
18 Years to 65 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2014
U.S. locations
1
States / cities
Buena Park, California
Source: ClinicalTrials.gov public record
Updated Aug 11, 2014 · Synced Oct 27, 2026, 2:30 PM EDT