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ClinicalTrials.gov public records Last synced Oct 17, 2026, 8:26 PM EDT

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Showing 1–24 of 75 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Carotenoid Clear all
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 Dec 1, 2022 · Synced Oct 17, 2026, 8:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Black Pepper on the Absorption of Nutrients in Vegetables

NCT03490955
View directory record Official record
Conditions
Black Pepper, Absorption, Carotenoid
Interventions
salad dressing (canola oil) and black pepper, salad dressing (canola oil), black pepper, salad, Salad dressing (olive oil) and black pepper, Salad dressing (corn oil) and black pepper, Salad dressing (sunflower oil) and black pepper, Salad dressing (flaxseed oil) and black pepper
Other
Lead sponsor
University of Massachusetts, Amherst
Other
Eligibility
18 Years to 30 Years
Enrollment
16 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Amherst, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 30, 2021 · Synced Oct 17, 2026, 8:26 PM EDT
Active, not 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 Jul 20, 2026 · Synced Oct 17, 2026, 8:26 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Produce Prescriptions and Veggie Meter Scores for College Food Security

NCT07511699
View directory record Official record
Conditions
Food Insecurity, Carotenoid Status, Produce Prescription
Interventions
Produce boxes
Other
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026
U.S. locations
1
States / cities
Newark, New Jersey
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Oct 17, 2026, 8:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Vitamin A Equivalence of Plant Carotenoids in Children

NCT00680212
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
dietary carotenoids, spinach, rice, and synthetic beta-carotene
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
6 Years to 8 Years
Enrollment
72 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 18, 2009 · Synced Oct 17, 2026, 8:26 PM 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 24, 2015 · Synced Oct 17, 2026, 8:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Juice Study: Sensitivity of Skin Carotenoid Status to Detect Change in Intake

NCT03202043
View directory record Official record
Conditions
Overweight
Interventions
High dose vegetable juice, Medium dose vegetable juice, Low dose vegetable juice, Control bottled water
Other
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
80 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2019
U.S. locations
1
States / cities
Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated May 16, 2022 · Synced Oct 17, 2026, 8:26 PM EDT
Not listed Not applicable Interventional

Diabetic Retinopathy Functional Evaluation Study: Monitoring Carotenoid Vitamins Treatment Using ERG

NCT04117022
View directory record Official record
Conditions
Diabetes, Diabetic Retinopathy
Interventions
DVS supplementation
Dietary Supplement
Lead sponsor
ZeaVision, LLC
Industry
Eligibility
21 Years to 80 Years
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
2
States / cities
Pomona, California • Tahlequah, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 23, 2021 · Synced Oct 17, 2026, 8:26 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 17, 2026, 8:26 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Oral Supplementation of Astaxanthin on Skin Photoaging, Hydration and Elasticity

NCT05882084
View directory record Official record
Conditions
Photoaging
Interventions
Astaxanthin 6 mg daily, Placebo
Dietary Supplement
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
30 Years to 55 Years · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jul 25, 2023 · Synced Oct 17, 2026, 8:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Assessment of the Effects of a Daily Supplement 4Life Transfer Factor Vista Containing AREDS2 Formula on Skin Carotenoid Levels Using a Non-invasive Detection

NCT07513597
View directory record Official record
Conditions
Skin Carotenoids
Interventions
Dietary Supplement
Other
Lead sponsor
4Life Research, LLC
Industry
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Sandy City, Utah
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Oct 17, 2026, 8:26 PM 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 6, 2026 · Synced Oct 17, 2026, 8:26 PM 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 23, 2017 · Synced Oct 17, 2026, 8:26 PM 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 12, 2015 · Synced Oct 17, 2026, 8:26 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Evaluation of Changes in Skin Carotenoid Scores in Medical Students Following Dietary Interventions

NCT02163928
View directory record Official record
Conditions
Health Behavior
Interventions
Food-based intervention; increased fruits and vegetables
Other
Lead sponsor
Texas Tech University Health Sciences Center
Other
Eligibility
18 Years to 89 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Lubbock, Texas
Source: ClinicalTrials.gov public record
Updated Feb 5, 2020 · Synced Oct 17, 2026, 8:26 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Impact of Egg Consumption on Carotenoid and Vitamin D Bioavailability in Pre- and Post-menopausal Women

NCT02679794
View directory record Official record
Conditions
Menopause
Interventions
Egg consumption, Control
Behavioral
Lead sponsor
Purdue University
Other
Eligibility
19 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 11, 2018 · Synced Oct 17, 2026, 8:26 PM 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 Jul 17, 2026 · Synced Oct 17, 2026, 8:26 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Lutein & Zeaxanthin in Pregnancy - Carotenoid Supplementation During Pregnancy: Ocular and Systemic Effects

NCT03750968
View directory record Official record
Conditions
Nutrient Deficiency, Pregnancy Related
Interventions
Carotenoid Group, Control Group
Drug · Dietary Supplement
Lead sponsor
Paul S. Bernstein
Other
Eligibility
18 Years and older · Female only
Enrollment
47 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2022
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Jul 11, 2023 · Synced Oct 17, 2026, 8:26 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

The Effects of a Carotenoid Intervention on Cognitive Function

NCT02023645
View directory record Official record
Conditions
Mild Cognitive Impairment
Interventions
active supplement, placebo
Dietary Supplement · Other
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 95 Years
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2015
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated May 27, 2015 · Synced Oct 17, 2026, 8:26 PM 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 13, 2026 · Synced Oct 17, 2026, 8:26 PM EDT
Completed Not applicable Interventional Results available

Family-based Lifestyle Intervention Program and Carotenoid Supplementation for Children With Obesity

NCT02060279
View directory record Official record
Conditions
Pediatric Obesity
Interventions
Lifestyle intervention and carotenoid supplements, Lifestyle intervention and placebo
Other
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
8 Years to 11 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2013
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jul 18, 2024 · Synced Oct 17, 2026, 8:26 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Fruit and Vegetable Study - Pilot

NCT07727746
View directory record Official record
Conditions
Fruit and Vegetable Consumption in Children, Fruit and Vegetable Consumption, Fruit and Vegetable Selection in the Lunchroom, Caregiver Nutrition
Interventions
FFVP+, FFVP-only
Behavioral
Lead sponsor
Arizona State University
Other
Eligibility
7 Years to 65 Years
Enrollment
880 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Phoenix, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Oct 17, 2026, 8:26 PM 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 12, 2017 · Synced Oct 17, 2026, 8:26 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers Results available

Impact of Maternal Vitamin A or Beta-Carotene Supplementation on Maternal and Infant Mortality in Bangladesh

NCT00198822
View directory record Official record
Conditions
Vitamin A Deficiency, Maternal Mortality, Infant Mortality
Interventions
Vitamin A or Beta-Carotene Supplements
Dietary Supplement
Lead sponsor
Johns Hopkins Bloomberg School of Public Health
Other
Eligibility
15 Years to 49 Years · Female only
Enrollment
59,666 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2008
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Mar 7, 2012 · Synced Oct 17, 2026, 8:26 PM EDT