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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: quercetin Clear all
Completed Phase 2 Interventional

Fortifying Healthy Behaviors, Optimizing Medical Therapies and Enhancing Cognitive Function in Older Adults-pilot Study

NCT07000734
View directory record Official record
Conditions
Aging, Cognitive Decline, Older Adults, Cardiovascular, Sedentary Behaviors, Immune Senescence, Motor Function
Interventions
Risk managment, Dasatinib, Quercetin (dietary supplement), Vortioxetine
Behavioral · Drug · Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
50 Years to 70 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 2, 2026, 4:03 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 9, 2023 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers Results available

Quercetin PK/PD Study in Healthy Adults and Patients With Hypercoagulable States

NCT01722669
View directory record Official record
Conditions
Healthy
Interventions
isoquercetin or quercetin
Drug
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
18 Years to 80 Years
Enrollment
38 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 11, 2020 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Short-term Curcumin and Multi-polyphenol Supplementation on the Anti-inflammatory Properties of HDL

NCT02998918
View directory record Official record
Conditions
Inflammation, Atherosclerosis, Cardiovascular Disease
Interventions
PolyResveratrol Supplementation, Curcumin Supplementation
Dietary Supplement
Lead sponsor
University of South Carolina
Other
Eligibility
18 Years to 60 Years
Enrollment
21 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Columbia, South Carolina
Source: ClinicalTrials.gov public record
Updated Nov 17, 2023 · Synced Sep 2, 2026, 4:03 PM EDT
Terminated Phase 2 Interventional Results available

Trial of Quercetin, Bromelain, Rye Flower Pollen & Papain on Reducing Severity of Radiation-Induced Prostatitis

NCT04252625
View directory record Official record
Conditions
Prostate Adenocarcinoma
Interventions
Q-Urol, Placebo
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older · Male only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
2
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jan 27, 2026 · Synced Sep 2, 2026, 4:03 PM EDT
Not yet recruiting Phase 2 Interventional Accepts healthy volunteers

RQC for the Prevention of Alzheimer's Disease and Retinal Amyloid-β

NCT06470061
View directory record Official record
Conditions
Alzheimer Disease, Mild Cognitive Impairment, Cognitive Decline
Interventions
Resveratrol, Quercetin, and Curcumin (RQC), Curcumin
Drug
Lead sponsor
Zaparackas and Knepper LTD
Other
Eligibility
50 Years to 90 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 25, 2024 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Modulation of Cerebral Blood Flow Using Quercetin, a Nutritional Supplement

NCT01376011
View directory record Official record
Conditions
Stroke, Problem of Aging
Interventions
quercetin/placebo
Dietary Supplement
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years to 75 Years
Enrollment
106 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2014
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 27, 2015 · Synced Sep 2, 2026, 4:03 PM EDT
Recruiting Phase 1Phase 2 Interventional

Green Tea and Quercetin in Combination With Docetaxel Chemotherapy in Castration-resistant Prostate Cancer Patients

NCT06615752
View directory record Official record
Conditions
Metastatic Castration-resistant Prostate Cancer (mCRPC)
Interventions
green tea and quercetin + docetaxel, Placebo + docetaxel
Drug
Lead sponsor
Charles Drew University of Medicine and Science
Other
Eligibility
18 Years and older · Male only
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 2, 2026, 4:03 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 28, 2026 · Synced Sep 2, 2026, 4:03 PM EDT
Terminated Not applicable Interventional

Vision Preservation and Restoration Following a 6 Month Trial of GlaucoCetin

NCT04784234
View directory record Official record
Conditions
Primary Open Angle Glaucoma
Interventions
GlaucoCetin, Placebo
Dietary Supplement · Other
Lead sponsor
Wills Eye
Other
Eligibility
40 Years to 80 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Q-Trial in Patients With Hepatitis C

NCT01438320
View directory record Official record
Conditions
Chronic Hepatitis C
Interventions
Quercetin
Dietary Supplement
Lead sponsor
University of California, Los Angeles
Other
Eligibility
18 Years to 65 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 19, 2015 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Phase 1 Interventional

Can Quercetin Increase Claudin-4 and Improve Esophageal Barrier Function in GERD?

NCT02226484
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, GERD, Acid Reflux, Reflux
Interventions
Quercetin
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 80 Years
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2016
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Dec 19, 2016 · Synced Sep 2, 2026, 4:03 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 26, 2011 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Advancing Niacin by Inhibiting Flushing (ANTI-FLUSH)

NCT00913081
View directory record Official record
Conditions
Flushing
Interventions
Quercetin, Placebo
Dietary Supplement
Lead sponsor
University of Pennsylvania
Other
Eligibility
21 Years to 75 Years
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
2
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 4, 2015 · Synced Sep 2, 2026, 4:03 PM EDT
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 25, 2016 · Synced Sep 2, 2026, 4:03 PM EDT
Recruiting Phase 1 Interventional

Quercetin Dyskeratosis Congenita (DC)/Telomere Biology Disorders (TBD)

NCT07628972
View directory record Official record
Conditions
Dyskeratosis Congenita, Telomere Disease
Interventions
Quercetin
Drug
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
2 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Can Fish Oil and Phytochemical Supplements Mimic Anti-Aging Effects of Calorie Restriction?

NCT01752868
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Supplement
Dietary Supplement
Lead sponsor
Washington University School of Medicine
Other
Eligibility
40 Years to 60 Years
Enrollment
56 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Dec 18, 2012 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Phase 2 Interventional

Investigating the Use of Quercetin on Glucose Absorption in Obesity, and Obesity With Type 2 Diabetes

NCT00065676
View directory record Official record
Conditions
Obesity, Diabetes
Interventions
Quercetin, Placebo
Other
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 65 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 30, 2026 · Synced Sep 2, 2026, 4:03 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

The Effects of Quercefit® and Ubiqsome™ in Mitigating Inflammation and Promoting Metabolic Health

NCT07760506
View directory record Official record
Conditions
Healthy Aging, Inflammaging, Metabolic Health, Quercetin, Coenzyme Q10
Interventions
Quercetin (dietary supplement), Coenzyme Q10, Rice Flour
Dietary Supplement
Lead sponsor
Applied Science & Performance Institute
Industry
Eligibility
50 Years to 75 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Tampa, Florida
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 2, 2026, 4:03 PM EDT
Not listed Phase 1Phase 2 Interventional

Biological Effects of Quercetin in COPD

NCT03989271
View directory record Official record
Conditions
Chronic Obstructive Pulmonary Disease
Interventions
Quercetin
Drug
Lead sponsor
Temple University
Other
Eligibility
40 Years to 80 Years
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Aug 15, 2023 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Senolytic Therapy to Modulate Progression of Alzheimer's Disease

NCT04063124
View directory record Official record
Conditions
Alzheimer Disease
Interventions
Dasatinib + Quercetin
Drug
Lead sponsor
The University of Texas Health Science Center at San Antonio
Other
Eligibility
65 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Mar 5, 2023 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Comparison of Plasma Caffeine Concentration After Oral Consumption of Caffeinated Beverages With Varied Bioactive Compounds in Healthy Volunteers

NCT04281758
View directory record Official record
Conditions
Plasma Caffeine Concentration
Interventions
Beverage
Other
Lead sponsor
PepsiCo Global R&D
Industry
Eligibility
18 Years to 55 Years · Male only
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Saint Paul, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 29, 2020 · Synced Sep 2, 2026, 4:03 PM EDT
Completed Phase 1 Interventional

Effect of Quercetin on Green Tea Polyphenol Uptake in Prostate Tissue From Patients With Prostate Cancer Undergoing Surgery

NCT01912820
View directory record Official record
Conditions
Adenocarcinoma of the Prostate, Recurrent Prostate Cancer, Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer, Stage III Prostate Cancer, Stage IV Prostate Cancer
Interventions
green tea extract, quercetin, placebo, therapeutic conventional surgery, laboratory biomarker analysis
Dietary Supplement · Drug · Other + 1 more
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
40 Years to 75 Years · Male only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
2
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Jun 22, 2021 · Synced Sep 2, 2026, 4:03 PM EDT
Active, not recruiting Phase 2 Interventional

Dasatinib Plus Quercetin for Accelerated Aging in Mental Disorders

NCT05838560
View directory record Official record
Conditions
Schizophrenia, Treatment Resistant Depression, Aging, Premature
Interventions
Dasatinib, quercetin
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
50 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 20, 2026 · Synced Sep 2, 2026, 4:03 PM EDT