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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Carotenoids Clear all
Not listed Not applicable Interventional Accepts healthy volunteers

Lutein Supplementation in Healthy Children

NCT05314647
View directory record Official record
Conditions
Eye Fatigue, Diet, Healthy, Cognitive Change
Interventions
lutein, placebo
Dietary Supplement
Lead sponsor
Northcentral University
Other
Eligibility
8 Years to 16 Years
Enrollment
59 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Des Moines, Iowa
Source: ClinicalTrials.gov public record
Updated Nov 29, 2023 · Synced Jun 27, 2026, 2:25 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Baylor Infant and Toddler Biomarker of Nutrition Study

NCT05869760
View directory record Official record
Conditions
Healthy Nutrition, Healthy Diet
Interventions
Carotenoid Intake, Serum carotenoid concentrations
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
3 Months to 24 Months
Enrollment
208 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2028
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 26, 2026 · Synced Jun 27, 2026, 2:25 AM EDT
Completed No phase listed Observational

The Role of Macular Pigment Carotenoids in the Pathogenesis and Treatment of Macular Telangiectasia Type 2 (MacTel)

NCT01354093
View directory record Official record
Conditions
Idiopathic Juxtafoveal Telangiectasia
Interventions
zeaxanthin
Drug
Lead sponsor
Paul S. Bernstein
Other
Eligibility
50 Years to 85 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2017
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jun 22, 2017 · Synced Jun 27, 2026, 2:25 AM EDT
Recruiting No phase listed Observational Accepts healthy volunteers

Carotenoids in the Skin and Immune Aging

NCT07221643
View directory record Official record
Conditions
No Condition, Skin Carotenoids and Immune-aging
Interventions
Not listed
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Redwood City, California
Source: ClinicalTrials.gov public record
Updated Dec 14, 2025 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Beta-carotene Absorption and Bioconversion to Vitamin A From Biofortified Cassava Gari

NCT02210507
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
Biofortified cassava gari, White cassava gari, White cassava gari + red palm oil
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 45 Years · Female only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jan 11, 2015 · Synced Jun 27, 2026, 2:25 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Correlational and Intervention Effects of Egg Consumption on Macular Carotenoids, Cognition, and Achievement During Childhood

NCT03521349
View directory record Official record
Conditions
Diet Habit, Cognitive Control
Interventions
Whole Egg Intervention, Egg White Control
Other
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
7 Years to 12 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2020
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 14, 2020 · Synced Jun 27, 2026, 2:25 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Carotenoid Supplementation and Retinal Health in Healthy Adults

NCT07314411
View directory record Official record
Conditions
Healthy
Interventions
other, Placebo
Dietary Supplement
Lead sponsor
Pacific University
Other
Eligibility
18 Years to 75 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Forest Grove, Oregon
Source: ClinicalTrials.gov public record
Updated Jan 5, 2026 · Synced Jun 27, 2026, 2:25 AM EDT
Completed No phase listed Observational

Feasibility of Measuring Skin Carotenoid Level in an Asthma Clinic

NCT06636396
View directory record Official record
Conditions
Asthma
Interventions
Not listed
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Oct 9, 2024 · Synced Jun 27, 2026, 2:25 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Healthy Term Infants Fed Milk-Based Formulas

NCT02069522
View directory record Official record
Conditions
Infants
Interventions
Standard Milk-based Formula Containing Carotenoid, Investigational Milk-based Formula Containing Carotenoid
Other
Lead sponsor
Abbott Nutrition
Industry
Eligibility
14 Days to 28 Days
Enrollment
91 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
6
States / cities
Tuscon, Arizona • Indianapolis, Indiana • Lincoln, Nebraska + 3 more
Source: ClinicalTrials.gov public record
Updated Mar 23, 2015 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Phase 3 Interventional

Open-Label Extension Study of MCS-2 in the Treatment of Lower Urinary Tract Symptoms (MCS-2-US-c)

NCT01002222
View directory record Official record
Conditions
Lower Urinary Tract Symptoms, Benign Prostatic Hyperplasia
Interventions
MCS-2
Drug
Lead sponsor
Health Ever Bio-Tech Co., Ltd.
Industry
Eligibility
40 Years and older · Male only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Mar 2, 2015 · Synced Jun 27, 2026, 2:25 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Yellow Potatoes and Carotenoids

NCT07606001
View directory record Official record
Conditions
Carotenoids
Interventions
Yellow-flesh potatoes, White-flesh potatoes
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 80 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 10, 2026 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Lutein/Zeaxanthin and Omega-3 Supplementation in Persons Over Age 60

NCT00121589
View directory record Official record
Conditions
Macular Degeneration
Interventions
Lutein
Drug
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
60 Years and older
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2007
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Provitamin A Absorption and Conversion With Avocados

NCT01432210
View directory record Official record
Conditions
Healthy
Interventions
Post-prandial Feeding Study
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 70 Years
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Sep 29, 2016 · Synced Jun 27, 2026, 2:25 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Identifying Terpenoid- and Carotenoid-modifying Enzymes in the Human Gut

NCT07589166
View directory record Official record
Conditions
Terpene Synthases, Carotenoid Modifying Enzymes
Interventions
No Intervention: Observational Cohort
Other
Lead sponsor
North Carolina State University
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Raleigh, North Carolina
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Human Lycopene and Beta-cryptoxanthin Absorption From Citrus Fruit

NCT02348164
View directory record Official record
Conditions
Bioavailability of Carotenoids
Interventions
Pink grapefruit first followed by tangerines two weeks later, Tangerines first followed by pink grapefruit two weeks later
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2009
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jan 27, 2015 · Synced Jun 27, 2026, 2:25 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Sweet Corn and Carotenoids

NCT06892444
View directory record Official record
Conditions
Carotenoids
Interventions
Yellow Sweet Corn, White Sweet Corn
Dietary Supplement
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 90 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated May 12, 2026 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers

Vitamin A Value of Spirulina Carotenoids in Humans

NCT00680277
View directory record Official record
Conditions
Intrinsically Labeled Spirulina
Interventions
spirulina ß-carotene
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
40 Years to 70 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 11, 2017 · Synced Jun 27, 2026, 2:25 AM EDT
Not listed Not applicable Interventional

Prospective Study of Adjunctive Carotenoids Plus Anti-oxidants in Anti-VEGF Treated Diabetic Macular Edema

NCT03866005
View directory record Official record
Conditions
Center-involved Diabetic Macular Edema (CI-DME)
Interventions
Diabetes Visual Function Study (DiVFuSS) softgels, canola oil placebo softgels, 2 per day
Dietary Supplement · Other
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
18 Years to 80 Years
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
2
States / cities
Olympia, Washington • Tacoma, Washington
Source: ClinicalTrials.gov public record
Updated Jul 1, 2020 · Synced Jun 27, 2026, 2:25 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Goji vs. Fiber on Macular Degeneration

NCT06237127
View directory record Official record
Conditions
Age-Related Macular Degeneration
Interventions
Goji berry, Fiber
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
65 Years to 95 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2027
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jun 23, 2025 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Not applicable Interventional

Increased Access to Fruits and Vegetables for Hypertension in Immigrant Hispanic/Latinx Individuals

NCT05802134
View directory record Official record
Conditions
Cardiovascular Diseases
Interventions
Fruit and vegetable supplement, Dietary and chronic disease management education
Dietary Supplement · Behavioral
Lead sponsor
St. Catherine University
Other
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
5
States / cities
Apple Valley, Minnesota • Fridley, Minnesota • Minneapolis, Minnesota + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 27, 2024 · Synced Jun 27, 2026, 2:25 AM EDT
Withdrawn Phase 2 Interventional

Carotenoid Rich Diet in Treating Cervical Dysplasia

NCT00003094
View directory record Official record
Conditions
Cervical Cancer
Interventions
preventative dietary intervention
Other
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years to 55 Years · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1997
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated May 19, 2014 · Synced Jun 27, 2026, 2:25 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Eye and Carotenoid Augmentation Research and Evaluation (EyeCARE)

NCT06848101
View directory record Official record
Conditions
Vision, Eye Health
Interventions
Carotenoid Group, Control (placebo) group
Dietary Supplement
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
20 Years to 45 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 25, 2025 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Influence of Mango Intake of Skin Health in Postmenopausal Women

NCT03590756
View directory record Official record
Conditions
Wrinkle, Skin Red
Interventions
16 weeks mango intake
Other
Lead sponsor
University of California, Davis
Other
Eligibility
50 Years to 70 Years · Female only
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Oct 13, 2019 · Synced Jun 27, 2026, 2:25 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Using Reinforcement Schedules to Increase Fruit&Vegetable Intake, Reduce Waste, and Increase School Lunch Participation

NCT05633251
View directory record Official record
Conditions
Behavioral Changes, Psychology, Social, Nutrition
Interventions
Variable (random) interval, Variable (non-random) interval, Variable (random) interval with table tents, Control
Behavioral
Lead sponsor
New Mexico State University
Other
Eligibility
11 Years to 16 Years
Enrollment
1,626 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
El Paso, Texas
Source: ClinicalTrials.gov public record
Updated Nov 30, 2022 · Synced Jun 27, 2026, 2:25 AM EDT