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Showing 1–24 of 73 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Carotenoids Clear all
Completed Not applicable Interventional Accepts healthy volunteers

Novel Metabolites of Beta-Carotene and Lycopene

NCT02550483
View directory record Official record
Conditions
Healthy
Interventions
Base diet + high beta-carotene tomato juice, Base diet + high lycopene tomato juice, Base diet + placebo beverage
Other
Lead sponsor
USDA Beltsville Human Nutrition Research Center
Federal
Eligibility
21 Years to 75 Years
Enrollment
36 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated Apr 25, 2018 · Synced Jun 27, 2026, 12:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of a Nutrient Dense Food on the Skin CarotenoidLevels of School Age Children

NCT03146715
View directory record Official record
Conditions
Raman Spectroscopy, Children, Only
Interventions
Feeding trial
Other
Lead sponsor
Utah State University
Other
Eligibility
5 Years to 18 Years
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015
U.S. locations
1
States / cities
Logan, Utah
Source: ClinicalTrials.gov public record
Updated May 9, 2017 · Synced Jun 27, 2026, 12:56 AM 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 Jun 27, 2026, 12:56 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Small Daily Doses of B-carotene on Breast Milk Retinol

NCT01803659
View directory record Official record
Conditions
Vitamin A Status
Interventions
b-carotene, retinyl palmitate, placebo
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 35 Years · Female only
Enrollment
85 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jun 10, 2015 · Synced Jun 27, 2026, 12:56 AM 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 Jun 27, 2026, 12:56 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers Results available

Carotenoid and Flavonoid Absorption From Red and Tangerine-Type Tomatoes

NCT01696773
View directory record Official record
Conditions
Carotenoid and Flavonoid Absorption
Interventions
Tangerine tomato juice, Red tomato juice
Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 70 Years
Enrollment
12 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2027
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 19, 2025 · Synced Jun 27, 2026, 12:56 AM EDT
Completed Not applicable Interventional

"Night Vision and Carotenoids"

NCT04741763
View directory record Official record
Conditions
Macular Degeneration
Interventions
EyePromise Visual Edge
Dietary Supplement
Lead sponsor
Robert Davis
Other
Eligibility
50 Years and older
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
North Chicago, Illinois • Oak Lawn, Illinois
Source: ClinicalTrials.gov public record
Updated Feb 4, 2021 · Synced Jun 27, 2026, 12:56 AM 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 Apr 19, 2026 · Synced Jun 27, 2026, 12:56 AM 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 26, 2015 · Synced Jun 27, 2026, 12:56 AM 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 6, 2026 · Synced Jun 27, 2026, 12:56 AM 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 Jun 27, 2026, 12:56 AM 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 6, 2026 · Synced Jun 27, 2026, 12:56 AM 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 Jun 27, 2026, 12:56 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Feeding the Rainbow to Investigate Endothelial Dysfunction

NCT01175577
View directory record Official record
Conditions
Dietary Modification, Cardiovascular Disease
Interventions
Chlorophyll complex, Standard Process, Betatene, sold as "Full Spectrum Carotenoid Complex", Small carotenoid-rich meals, Placebo
Dietary Supplement · Other
Lead sponsor
Bastyr University
Other
Eligibility
18 Years to 65 Years
Enrollment
60 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2011
U.S. locations
2
States / cities
Kenmore, Washington • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 2, 2012 · Synced Jun 27, 2026, 12:56 AM 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 Jun 27, 2026, 12:56 AM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Carotenoids for Collision Athletes

NCT06270680
View directory record Official record
Conditions
Head Injury, Carotenoids
Interventions
Vision Edge Pro, Placebo
Drug · Other
Lead sponsor
Penn State University
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024
U.S. locations
1
States / cities
University Park, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 10, 2025 · Synced Jun 27, 2026, 12:56 AM 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 10, 2023 · Synced Jun 27, 2026, 12:56 AM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Enhancing Children's Cognitive Function and Achievement Through Carotenoid Consumption

NCT05177679
View directory record Official record
Conditions
Cognitive Change, Achievement, Macular Pigmentation
Interventions
Active supplement, Placebo control
Dietary Supplement
Lead sponsor
University of Illinois at Urbana-Champaign
Other
Eligibility
8 Years to 10 Years
Enrollment
288 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Urbana, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 26, 2023 · Synced Jun 27, 2026, 12:56 AM 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 10, 2018 · Synced Jun 27, 2026, 12:56 AM 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 Jun 21, 2026 · Synced Jun 27, 2026, 12:56 AM 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 Jun 27, 2026, 12:56 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Maternal Carotenoids Across Pregnancy Study

NCT06004479
View directory record Official record
Conditions
Healthy Nutrition, Pregnancy Related
Interventions
Carotenoid Intake, Serum carotenoid concentration
Other
Lead sponsor
Baylor College of Medicine
Other
Eligibility
18 Years to 40 Years · Female only
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2024
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 26, 2024 · Synced Jun 27, 2026, 12:56 AM 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 Jun 27, 2026, 12:56 AM EDT
Completed No phase listed Observational Accepts healthy volunteers Results available

Correlation Between Skin Carotenoid Levels and Previous History of Skin Cancer

NCT00836342
View directory record Official record
Conditions
Skin Cancer, Basal Cell Carcinoma, Squamous Cell Carcinoma
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
50 Years to 75 Years
Enrollment
81 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 24, 2012 · Synced Jun 27, 2026, 12:56 AM EDT