Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 2, 2026, 3:19 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 74 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Carotenoid Clear all
Completed Phase 1 Interventional Accepts healthy volunteers

Bioavailability of Pepper Carotenoids in Humans

NCT00636350
View directory record Official record
Conditions
Healthy
Interventions
Pepper
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
40 Years to 70 Years
Enrollment
5 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 11, 2017 · Synced Sep 2, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Biological Functions of Carotenoids in Humans

NCT00356252
View directory record Official record
Conditions
Oxidative DNA Damage
Interventions
mixed carotenoids
Drug
Lead sponsor
Tufts University
Other
Eligibility
50 Years to 70 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2003
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 23, 2008 · Synced Sep 2, 2026, 3:19 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 6, 2012 · Synced Sep 2, 2026, 3:19 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Goji Berry and Vasomotor Symptoms Pilot Study

NCT07660315
View directory record Official record
Conditions
Vasomotor Symptoms
Interventions
Goji Berry Juice Powder, Goji Berry Powder
Other
Lead sponsor
University of California, Davis
Other
Eligibility
40 Years to 65 Years · Female only
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2027
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Sep 2, 2026, 3:19 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 23, 2015 · Synced Sep 2, 2026, 3:19 PM EDT
Completed Phase 1Phase 2 Interventional Accepts healthy volunteers Results available

Novel 13C Carotenoids for Absorption and Metabolism Studies in Humans

NCT01692340
View directory record Official record
Conditions
Healthy
Interventions
Isotopically labeled lycopene, phytoene or phytofluene
Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
21 Years to 70 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2013
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 25, 2019 · Synced Sep 2, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Carotenoid Response to the Intake of Vegetables and Fruits

NCT01403844
View directory record Official record
Conditions
Resonance Raman Spectroscopy for Dietary Carotenoid Intake
Interventions
Carotenoid Depletion, Carotenoid Repletion, Natural Repletion
Other
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
18 Years to 65 Years
Enrollment
29 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2012
U.S. locations
1
States / cities
Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated May 19, 2020 · Synced Sep 2, 2026, 3:19 PM 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 Sep 2, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Plant Pigments for Human Health: Impact of Lycopene and Anthocyanins on Bioefficacy of Provitamin A Carotenoids From Carrots

NCT05319548
View directory record Official record
Conditions
Healthy
Interventions
Purple-Red Carrot Juice, Red Carrot Juice, Purple Carrot Juice
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years to 40 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Sep 2, 2026, 3:19 PM 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 Sep 2, 2026, 3:19 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 16, 2026 · Synced Sep 2, 2026, 3:19 PM EDT
Completed Not applicable Interventional Results available

The Zeaxanthin and Visual Function Study

NCT00564902
View directory record Official record
Conditions
Age Related Macular Degeneration, Cognition Disorders
Interventions
3R 3'R Zeaxanthin, Lutein, Lutein and Zeaxanthin
Drug · Dietary Supplement
Lead sponsor
Chrysantis, Inc.
Industry
Eligibility
45 Years to 90 Years
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
North Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Mar 28, 2012 · Synced Sep 2, 2026, 3:19 PM EDT
Withdrawn Phase 4 Interventional

Augmented Macular Pigment-containing Nutraceutical and Central Visual Function

NCT04676126
View directory record Official record
Conditions
Glaucoma, Glaucoma Eye, Glaucoma, Open-Angle
Interventions
Lumega-Z, Dorzolamide Hcl 2% Oph Soln, Placebo
Dietary Supplement · Drug · Other
Lead sponsor
University of the Incarnate Word
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2022
U.S. locations
1
States / cities
San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Oct 3, 2022 · Synced Sep 2, 2026, 3:19 PM 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 Sep 2, 2026, 3:19 PM EDT
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 Sep 2, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Dietary Lipids as Primary Modulators of Carotenoid Absorption in Vegetables

NCT01006174
View directory record Official record
Conditions
Absorption of Carotenoids From Vegetables
Interventions
Soybean Oil, Canola Oil, Butter
Other
Lead sponsor
Purdue University
Other
Eligibility
18 Years to 50 Years
Enrollment
55 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
West Lafayette, Indiana
Source: ClinicalTrials.gov public record
Updated Jan 16, 2013 · Synced Sep 2, 2026, 3:19 PM EDT
Completed Phase 2 Interventional Accepts healthy volunteers

Vitamin A Absorption From Cassava in Women

NCT01381276
View directory record Official record
Conditions
Vitamin A Deficiency
Interventions
Beta-Carotene bio-fortified cassava porridge without oil, Beta-Carotene bio-fortified cassava porridge with oil, White cassava porridge with retinyl palmitate reference dose
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
2011
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Dec 11, 2011 · Synced Sep 2, 2026, 3:19 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioavailability of Golden Rice Carotenoids in Humans

NCT00680355
View directory record Official record
Conditions
Healthy
Interventions
golden rice, corn oil 0g, corn oil 10g, coren oil 5 g
Dietary Supplement
Lead sponsor
Tufts University
Other
Eligibility
40 Years to 70 Years
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 30, 2013 · Synced Sep 2, 2026, 3:19 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 11, 2017 · Synced Sep 2, 2026, 3:19 PM 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 Sep 2, 2026, 3:19 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 17, 2009 · Synced Sep 2, 2026, 3:19 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Healthy Children, Healthy Communities: Effectiveness of a Multilevel Rural Community Engagement Model for Improving Children's Dietary Intake in Family Child Care Homes

NCT07160530
View directory record Official record
Conditions
Childhood Obesity Pevention, Diet Quality, Feeding Behaviors, Health Behavior Change, Rural Health
Interventions
EAT Family Style, Better Kid Care
Behavioral
Lead sponsor
University of Nebraska Lincoln
Other
Eligibility
3 Years and older
Enrollment
360 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2029
U.S. locations
1
States / cities
Lincoln, Nebraska
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Sep 2, 2026, 3:19 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Oral Probiotics on the Shift in Gut Microbiome and Skin Carotenoid Levels

NCT04841694
View directory record Official record
Conditions
Human Microbiome
Interventions
Probiotic
Dietary Supplement
Lead sponsor
Integrative Skin Science and Research
Industry
Eligibility
40 Years and older
Enrollment
25 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated May 2, 2021 · Synced Sep 2, 2026, 3:19 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

INTEGRATED CHILDHOOD ACTIVITY AND NUTRITION (ICAN) STUDY

NCT07011602
View directory record Official record
Conditions
Achievement, Weight Change, Cognition, Fitness, Nutrition Status
Interventions
8-week Physical Activity and Nutrition Program
Behavioral
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
6 Years to 11 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2027
U.S. locations
1
States / cities
Bloomington, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 8, 2025 · Synced Sep 2, 2026, 3:19 PM EDT