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ClinicalTrials.gov public records Last synced Oct 21, 2026, 2:55 PM EDT

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Showing 1–24 of 172 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: flavonoids Clear all
Completed Phase 1 Interventional Results available

Beneficial Effects of Quercetin in Chronic Obstructive Pulmonary Disease (COPD)

NCT01708278
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Quercetin, Placebo - sugar chew
Drug · Other
Lead sponsor
University of Michigan
Other
Eligibility
40 Years to 80 Years
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Ann Arbor, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 26, 2016 · Synced Oct 21, 2026, 2:55 PM EDT
Terminated Phase 2 Interventional

Genistein in Treating Patients With Localized Prostate Cancer Who Are Planning to Undergo Radical Prostatectomy

NCT00058266
View directory record Official record
Conditions
Prostate Cancer
Interventions
genistein, conventional surgery
Dietary Supplement · Procedure
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Male only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2009
U.S. locations
5
States / cities
Chicago, Illinois • Evanston, Illinois • Harvey, Illinois + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 19, 2012 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Results available

Effects of Botanical Microglia Modulators in Gulf War Illness

NCT02909686
View directory record Official record
Conditions
Gulf War Illness
Interventions
Boswellia Serrata, Curcumin, Epimedium, Fisetin, Luteolin, Nettle, Pycnogenol, Reishi Mushroom, Resveratrol, Placebo
Dietary Supplement
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
39 Years to 65 Years · Male only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Jan 24, 2025 · Synced Oct 21, 2026, 2:55 PM EDT
Recruiting Phase 2 Interventional

Dasatinib and Quercetin With CAR-T Therapy for the Treatment of Patients With Relapsed or Refractory Multiple Myeloma

NCT06940297
View directory record Official record
Conditions
Recurrent Multiple Myeloma, Refractory Multiple Myeloma
Interventions
Biopsy Procedure, Biospecimen Collection, Bone Marrow Aspiration, Bone Marrow Biopsy, Ciltacabtagene Autoleucel, Computed Tomography, Cyclophosphamide, Dasatinib, Fludarabine, Positron Emission Tomography, Quercetin
Procedure · Biological · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Relative Bioavailability Study of 100 mg Flavoxate Hydrochloride Tablets Under Fasting Conditions

NCT00992238
View directory record Official record
Conditions
Healthy
Interventions
Flavoxate Hydrochloride Tablets, 100mg, Urispas® Tablets, 100mg
Drug
Lead sponsor
Padagis LLC
Industry
Eligibility
18 Years to 75 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
U.S. locations
1
States / cities
Fargo, North Dakota
Source: ClinicalTrials.gov public record
Updated Jul 10, 2023 · Synced Oct 21, 2026, 2:55 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Evaluate the Safety and Efficacy of AGE Serum in Post-menopausal Patients on Hormone Replacement Therapy Taking Glucagon-like Peptide-1 Agonist

NCT07558603
View directory record Official record
Conditions
Laxity; Skin
Interventions
On GLP1 plus HRT, On GLP1 Only
Drug
Lead sponsor
Goldman, Butterwick, Fitzpatrick and Groff
Other
Eligibility
45 Years to 65 Years · Female only
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Flavonoids on Gut Permeability in Cyclists

NCT03427879
View directory record Official record
Conditions
Gut Permeability, Gut Inflammation
Interventions
Low flavonoid beverage, High flavonoid beverage
Drug
Lead sponsor
Utah State University
Other
Eligibility
18 Years to 49 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Logan, Utah
Source: ClinicalTrials.gov public record
Updated Feb 25, 2021 · Synced Oct 21, 2026, 2:55 PM EDT
Recruiting Phase 2 Interventional

Equol and Vascular Function in Women With Chronic Kidney Disease

NCT07194590
View directory record Official record
Conditions
Chronic Kidney Disease (Stage 3-4), Vascular Function, Cognitive Functions, Cerebrovascular Function, Blood Pressure
Interventions
Equol, Placebo
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
50 Years and older · Female only
Enrollment
74 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Evaluate the Safety and Efficacy of a Topical Serum (AGE Serum) in Improving Visible Signs of Aging

NCT07216352
View directory record Official record
Conditions
Laxity; Skin
Interventions
AGE Serum
Other
Lead sponsor
Goldman, Butterwick, Fitzpatrick and Groff
Other
Eligibility
25 Years to 50 Years
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
San Diego, California
Source: ClinicalTrials.gov public record
Updated Oct 28, 2025 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effect of Soy on Cognition and Hot Flashes in Men With Prostate Cancer Undergoing Testosterone Suppression Therapy

NCT00245518
View directory record Official record
Conditions
Hot Flashes
Interventions
Isoflavone, Placebos
Drug
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years and older · Male only
Enrollment
39 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 13, 2017 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 1 Interventional

Safety and Biomarker Response to (+)-Epicatechin in Becker Muscular Dystrophy

NCT04386304
View directory record Official record
Conditions
Becker Muscular Dystrophy
Interventions
(+)-Epicatechin
Drug
Lead sponsor
Epirium Bio Inc.
Industry
Eligibility
16 Years to 59 Years · Male only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
3
States / cities
Los Angeles, California • Sacramento, California • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Mar 23, 2022 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 2 Interventional

Phytoestrogens and Memory Decline in Menopause

NCT00051402
View directory record Official record
Conditions
Memory Loss, Postmenopause
Interventions
Isoflavones
Drug
Lead sponsor
National Center for Complementary and Integrative Health (NCCIH)
NIH
Eligibility
62 Years and older · Female only
Enrollment
96 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2007
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 26, 2007 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Quercetin's Effect on Bone Health and Inflammatory Markers

NCT05371340
View directory record Official record
Conditions
Osteoporosis, Postmenopausal
Interventions
Quercetin (500 mg), Placebo (500 mg)
Dietary Supplement · Other
Lead sponsor
Kennesaw State University
Other
Eligibility
45 Years to 75 Years · Female only
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Kennesaw, Georgia
Source: ClinicalTrials.gov public record
Updated May 12, 2022 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Early Phase 1 Interventional

S-equol in Women With Triple Negative Breast Cancer

NCT02352025
View directory record Official record
Conditions
Breast Cancer
Interventions
S-equol
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
18 Years and older · Female only
Enrollment
39 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 22, 2020 · Synced Oct 21, 2026, 2:55 PM EDT
Terminated Phase 2 Interventional Results available

Intravenous Milk Thistle (Silibinin-Legalon) for Hepatic Failure Induced by Amatoxin/Amanita Mushroom Poisoning

NCT00915681
View directory record Official record
Conditions
Amatoxin Poisoning, Amanita Poisoning, Mushroom Poisoning, Liver Failure
Interventions
Silibinin
Drug
Lead sponsor
Mylan Specialty, LP
Industry
Eligibility
Not listed
Enrollment
148 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2020
U.S. locations
2
States / cities
Somerset, New Jersey • Morgantown, West Virginia
Source: ClinicalTrials.gov public record
Updated Apr 7, 2022 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Safety and Pharmacokinetic Study of S-Equol in Healthy Volunteers

NCT00787007
View directory record Official record
Conditions
Healthy
Interventions
S-equol, Placebo
Drug
Lead sponsor
Ausio Pharmaceuticals, LLC
Industry
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008
U.S. locations
1
States / cities
Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jan 20, 2012 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of a Cocoa Shot on the Human Brain

NCT01924481
View directory record Official record
Conditions
Caffeine, Flavonoids
Interventions
High Caffeine, Low caffeine, High theobromine, low theobromine, No theobromine
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 38 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 18, 2018 · Synced Oct 21, 2026, 2:55 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Effects of Quercetin on Metabolic Health

NCT05297032
View directory record Official record
Conditions
Quercetin, Lipid Metabolism, Aging
Interventions
Quercetin Phytosome
Dietary Supplement
Lead sponsor
Thorne HealthTech, Inc
Industry
Eligibility
20 Years to 70 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Summerville, South Carolina
Source: ClinicalTrials.gov public record
Updated Jan 10, 2023 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Tart Cherry Juice for Sleep in Older Adults With Insomnia: A Pilot Study of Feasibility and Comprehensive Mechanisms

NCT06786494
View directory record Official record
Conditions
Sleep Problems, Insomnia
Interventions
Tart Cherry Juice, Placebo juice
Other
Lead sponsor
Courtney Millar
Other
Eligibility
65 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Roslindale, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 23, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Terminated Not applicable Interventional

Sulindac and Plant Compounds in Preventing Colon Cancer

NCT00003365
View directory record Official record
Conditions
Colorectal Cancer
Interventions
curcumin, rutin, quercetin, sulindac
Dietary Supplement · Drug
Lead sponsor
University of Medicine and Dentistry of New Jersey
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2006
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 27, 2011 · Synced Oct 21, 2026, 2:55 PM EDT
Not yet recruiting Phase 2 Interventional

Palmitic Acid and Human Microvascular Function

NCT06683534
View directory record Official record
Conditions
Microvascular Dysfunction, Microvasculature, Cardiovascular Diseases, Cardiovascular Diseases (CVD), Microvascular Health, Obesity and Overweight
Interventions
Quercetin (dietary supplement), Placebo
Dietary Supplement · Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years to 40 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
1
States / cities
Wauwatosa, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 1Phase 2 Interventional

A Clinical Research Study Designed To Determine If Treatment of Hepatitis C With Milk Thistle is More Effective Than No Treatment In Patients Infected With Both HIV And Hepatitis C

NCT00246363
View directory record Official record
Conditions
HIV Infections, Hepatitis C
Interventions
Silymarin, Placebo
Drug
Lead sponsor
Henry Sacks
Other
Eligibility
18 Years and older · Male only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2007
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Sep 15, 2011 · Synced Oct 21, 2026, 2:55 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Safety and Effectivness of Quercetin & Dasatinib on Epigenetic Aging

NCT04946383
View directory record Official record
Conditions
Aging
Interventions
Dasatinib plus Quercetin
Drug
Lead sponsor
TruDiagnostic
Industry
Eligibility
40 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2022
U.S. locations
1
States / cities
Orlando, Florida
Source: ClinicalTrials.gov public record
Updated Aug 3, 2021 · Synced Oct 21, 2026, 2:55 PM EDT
Completed Phase 2 Interventional

A Study to Evaluate the Safety and Efficacy of RQC for AMD

NCT05062486
View directory record Official record
Conditions
Age-related Macular Degeneration
Interventions
Resveratrol, Quercetin, Curcumin (RQC), Curcumin
Drug
Lead sponsor
Paul A Knepper, MD PhD
Other
Eligibility
50 Years to 90 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jul 30, 2025 · Synced Oct 21, 2026, 2:55 PM EDT