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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Antioxidant Clear all
Recruiting Phase 1Phase 2 Interventional

Adia MED of Winter Park LLC Autism Spectrum Disorder Research Study

NCT07304440
View directory record Official record
Conditions
Autism Spectrum Disorder, Autism, ASD, Autism Spectrum Disorder (ASD)
Interventions
Umbilical Cord Blood-Derived Stem Cells and Exosomes, Glutathione
Biological · Drug
Lead sponsor
Adia Med of Winter Park LLC
Other
Eligibility
3 Years to 12 Years
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Winter Park, Florida
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Evaluation of the Antioxidant and Anti-Inflammatory Capacities of the 'Rosy Red Valencia' and 'Olinda Valencia' Sweet Orange Varieties in Healthy Subjects

NCT06944210
View directory record Official record
Conditions
Healthy
Interventions
'Rosy Red Valencia' sweet orange, 'Olinda Valencia' sweet oranges
Other
Lead sponsor
University of California, Davis
Other
Eligibility
25 Years to 40 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Phase 2 Interventional Results available

Provision of Antioxidant Therapy in Hemodialysis (PATH) Study

NCT00237718
View directory record Official record
Conditions
End-stage Renal Disease
Interventions
Alpha, gamma, beta, and delta (mixed) tocopherols, Alpha lipoic acid, Placebo
Drug
Lead sponsor
Vanderbilt University
Other
Eligibility
18 Years and older
Enrollment
385 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 10, 2012 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Phase 2 Interventional

Curcumin in Patients With Mild to Moderate Alzheimer's Disease

NCT00099710
View directory record Official record
Conditions
Alzheimer's Disease
Interventions
Curcumin C3 Complex
Dietary Supplement
Lead sponsor
John Douglas French Foundation
Other
Eligibility
50 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2007
U.S. locations
1
States / cities
Westwood, Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Dec 2, 2009 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Dietary Strawberry Supplementation on Older Adults

NCT02051140
View directory record Official record
Conditions
Aging, Age-related Memory Disorders
Interventions
Freeze-dried Strawberry, Strawberry Placebo
Dietary Supplement
Lead sponsor
USDA Human Nutrition Research Center on Aging
Federal
Eligibility
60 Years to 75 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 1, 2015 · Synced Jul 23, 2026, 7:06 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Antioxidant Systems and Age-Related Macular Degeneration

NCT00668213
View directory record Official record
Conditions
Macular Degeneration
Interventions
Not listed
Lead sponsor
Vanderbilt University
Other
Eligibility
55 Years to 85 Years
Enrollment
143 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2010
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jan 9, 2014 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of Antioxidants in Blueberry Powder on Inflammation Induced by a Single High Fat Meal.

NCT01594008
View directory record Official record
Conditions
Inflammation
Interventions
Breakfast meal with placebo powder, Breakfast meal with 2 serving equivalents of blueberries, Breakfast meal with 4 serving equivalents of blueberries
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 60 Years
Enrollment
43 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Mar 23, 2015 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Phase 2 Interventional

Nutritional Intervention in Children With Autism Using Whey Protein (Immunocal): Impact on Core Areas of Behavior

NCT01366859
View directory record Official record
Conditions
Autism Spectrum Disorders
Interventions
Whey Protein, Rice Protein (Placebo)
Dietary Supplement
Lead sponsor
Nova Southeastern University
Other
Eligibility
3 Years to 5 Years
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
3
States / cities
Fort Lauderdale, Florida
Source: ClinicalTrials.gov public record
Updated Nov 2, 2016 · Synced Jul 23, 2026, 7:06 PM EDT
Active, not recruiting Phase 2 Interventional

Assessment of N-Acetylcysteine as Therapy for Myalgic Encephalomyelitis/Chronic Fatigue Syndrome

NCT04542161
View directory record Official record
Conditions
Chronic Fatigue Syndrome, Myalgic Encephalomyelitis
Interventions
NAC 900mg/day, NAC 3600mg/day, NAC 0mg/day (Placebo)
Drug
Lead sponsor
Weill Medical College of Cornell University
Other
Eligibility
21 Years to 60 Years
Enrollment
95 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Phase 1Phase 2 Interventional

IdB 1016 Treatment for Hepatitis C Disease

NCT00055445
View directory record Official record
Conditions
Hepatitis C, Chronic
Interventions
IdB 1016
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
18 Years to 65 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 17, 2006 · Synced Jul 23, 2026, 7:06 PM EDT
Terminated No phase listed Observational

Effect of Natural Antioxidant Supplement on Sperm DNA Fragmentation

NCT03646825
View directory record Official record
Conditions
Observe Effect of Antioxidant on Sperm DNA Fragmention
Interventions
Natural Antioxidant supplement
Dietary Supplement
Lead sponsor
Colorado Center for Reproductive Medicine
Other
Eligibility
18 Years to 55 Years · Male only
Enrollment
54 participants
Timeline
2018 – 2022
U.S. locations
1
States / cities
Lone Tree, Colorado
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Results available

Effects of the Dietary Approaches to Stop Hypertension(DASH) Sodium-restricted Diet in Diastolic Heart Failure

NCT00939640
View directory record Official record
Conditions
Diastolic Heart Failure, Hypertensive Heart Disease
Interventions
DASH/sodium-restricted diet (SRD)
Behavioral
Lead sponsor
University of Michigan
Other
Eligibility
50 Years and older
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 14, 2019 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Determination of the Independent Effects of Beetroot Juice Components, Dietary Nitrate and Antioxidants, on Exercise Tolerance and Health Benefits in Individuals With Obesity

NCT03545009
View directory record Official record
Conditions
Metabolic Disease, Obesity, Exercise
Interventions
Sodium Nitrate, Beetroot Juice no Nitrate, Beetroot Juice
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
18 Years to 40 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Sep 21, 2021 · Synced Jul 23, 2026, 7:06 PM EDT
Not listed Not applicable Interventional

Efficacy of Oxepa Enteral Feeding in LTAC (Long Term Acute Care Hospital) Patients on Chronic Ventilation- a Pilot Study

NCT02208700
View directory record Official record
Conditions
Acute Lung Injury, Mechanical Ventilation Complication, Dietary Modification
Interventions
Oxepa, Jevity 1.5
Other
Lead sponsor
Grace Hospital, Cleveland, Ohio
Other
Eligibility
19 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2014
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 4, 2014 · Synced Jul 23, 2026, 7:06 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 27, 2016 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Blueberry Intervention Study for Brain Aging

NCT05024916
View directory record Official record
Conditions
Brain Aging
Interventions
Intervention, Control
Dietary Supplement
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
65 Years to 89 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated May 20, 2025 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Dietary Supplement on Exercise Performance in Healthy Older Adults"

NCT01073332
View directory record Official record
Conditions
Excessive Physical Exercise, Unspecified
Interventions
Arginine antioxidant supplements, Placebo
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
50 Years to 75 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2005
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 7, 2015 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Study of Vitamin C in the Treatment of Liver Cancer to Determine if it is Safe and Effective

NCT01754987
View directory record Official record
Conditions
Metastatic Hepatocellular Carcinoma, Advanced Liver Cancer
Interventions
Ascorbic Acid + Sorafenib, Sorafenib
Drug
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 3, 2025 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional

Study of Glutathione, Vitamin C and Cysteine in Children With Autism and Severe Behavior Problems

NCT00889538
View directory record Official record
Conditions
Autism, Severe Behavior Disorder
Interventions
placebo, glutathione, glutathione, vit C and NAC
Drug
Lead sponsor
University of Louisville
Other
Eligibility
5 Years to 16 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Louisville, Kentucky
Source: ClinicalTrials.gov public record
Updated Dec 6, 2016 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Racial and Aging Effects of Acute Antioxidant Supplementation

NCT02157207
View directory record Official record
Conditions
Healthy
Interventions
Antioxidant, Placebo
Dietary Supplement · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years to 75 Years
Enrollment
93 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 15, 2015 · Synced Jul 23, 2026, 7:06 PM EDT
Terminated Phase 3 Interventional

Early Versus Delayed Enteral Feeding and Omega-3 Fatty Acid/Antioxidant Supplementation for Treating People With Acute Lung Injury or Acute Respiratory Distress Syndrome (The EDEN-Omega Study)

NCT00609180
View directory record Official record
Conditions
Respiratory Distress Syndrome, Adult
Interventions
Minimal (Trophic) Feeding, Full Feeding, Omega-3 Fatty Acids and Antioxidant Supplements, Placebo
Behavioral · Dietary Supplement
Lead sponsor
National Heart, Lung, and Blood Institute (NHLBI)
NIH
Eligibility
13 Years and older
Enrollment
272 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
41
States / cities
Fresno, California • Sacramento, California • San Francisco, California + 20 more
Source: ClinicalTrials.gov public record
Updated Apr 12, 2016 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional

Effect of Grape Seed Extract Plus Ascorbic Acid on Endothelial Function

NCT00554242
View directory record Official record
Conditions
Coronary Artery Disease
Interventions
Grape seed extract and ascorbic acid
Dietary Supplement
Lead sponsor
Boston University
Other
Eligibility
21 Years to 80 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 17, 2009 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effects of a Nutrition Supplement on Health Related Quality of Life

NCT04499560
View directory record Official record
Conditions
Sleep, Stress, Health, Subjective, Inflammation, Cognitive Symptom
Interventions
Supplement Drink
Dietary Supplement
Lead sponsor
Nutraceuticals Research Institute
Other
Eligibility
18 Years to 70 Years
Enrollment
160 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Franklin, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 25, 2021 · Synced Jul 23, 2026, 7:06 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Trial of PledOx + FOLFOX6 Compared to Placebo + FOLFOX6 in Patients With Metastatic Colorectal Cancer

NCT01619423
View directory record Official record
Conditions
Advanced Metastatic (Stage IV) Colorectal Cancer
Interventions
PledOx (2 µmol/kg), PledOx (5 µmol/kg), PledOx (10 µmol/kg), Placebo (0,9% NaCl)
Drug
Lead sponsor
Egetis Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
186 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
6
States / cities
La Jolla, California • Bethesda, Maryland • Chattanooga, Tennessee + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2018 · Synced Jul 23, 2026, 7:06 PM EDT