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ClinicalTrials.gov public records Last synced Oct 4, 2026, 8:16 PM EDT

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Showing 25–48 of 49 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: dietary carotenoids Clear all
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 5, 2021 · Synced Oct 4, 2026, 8:16 PM EDT
Not yet recruiting Not applicable Interventional Accepts healthy volunteers

Bite Sized Biomarkers

NCT07845383
View directory record Official record
Conditions
Dietary Assessment, Diet, Food, and Nutrition, Carotenoid Status
Interventions
Bite-sized Biomarkers: Skin carotenoid scores
Behavioral
Lead sponsor
Stanford University
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Palo Alto, California
Source: ClinicalTrials.gov public record
Updated Sep 28, 2026 · Synced Oct 4, 2026, 8:16 PM EDT
Completed Phase 1 Interventional

Low Antioxidant Diet in Controlling Cachexia in Patients With Oropharyngeal Cancer Receiving Chemotherapy and Radiation Therapy

NCT00486304
View directory record Official record
Conditions
Cachexia, Head and Neck Cancer, Weight Changes
Interventions
ADD, Placebo
Other
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2008
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 18, 2012 · Synced Oct 4, 2026, 8:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

LycoRed 40051 Product as a Countermeasure to Exercise Stress

NCT02369666
View directory record Official record
Conditions
Inflammation
Interventions
LycoRed (code 40051) product, Placebo
Dietary Supplement
Lead sponsor
Appalachian State University
Other
Eligibility
18 Years to 45 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2015
U.S. locations
1
States / cities
Kannapolis, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 16, 2015 · Synced Oct 4, 2026, 8:16 PM EDT
Completed Not applicable Interventional

Feeding Trial to Determine How Combinations of Different Dietary Bioactive Ingredients Influence High Density Lipoprotein (HDL) Metabolism

NCT01803594
View directory record Official record
Conditions
Dyslipidemia
Interventions
Krill Oil, Lutein, Nicotinic acid, Dairy phospholipids, Control
Dietary Supplement · Other
Lead sponsor
University of California, Davis
Other
Eligibility
18 Years to 65 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Sep 30, 2022 · Synced Oct 4, 2026, 8:16 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 4, 2026, 8:16 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 17, 2013 · Synced Oct 4, 2026, 8:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

The Effect of Gojiberry Intake (Lycium Barbarium) on Macular Function

NCT03983525
View directory record Official record
Conditions
Macular Pigment Optical Density
Interventions
Goji berry, Lutein + zeaxanthin supplementation
Dietary Supplement
Lead sponsor
University of California, Davis
Other
Eligibility
45 Years to 65 Years
Enrollment
31 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Jul 23, 2020 · Synced Oct 4, 2026, 8:16 PM 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 15, 2020 · Synced Oct 4, 2026, 8:16 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Lycopene in Healthy Male Participants

NCT00450957
View directory record Official record
Conditions
Healthy, no Evidence of Disease, Prostate Cancer
Interventions
lycopene, pharmacological study
Dietary Supplement · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 55 Years · Male only
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2007
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Apr 15, 2015 · Synced Oct 4, 2026, 8:16 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 Sep 1, 2026 · Synced Oct 4, 2026, 8:16 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 Jul 1, 2013 · Synced Oct 4, 2026, 8:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Pilot Feasibility of Rice Bran Supplementation in Children

NCT02557373
View directory record Official record
Conditions
Dietary Rice Bran Supplementation
Interventions
Vitamin A, Rice Bran + Vitamin A
Dietary Supplement
Lead sponsor
Colorado State University
Other
Eligibility
4 Months to 10 Months
Enrollment
48 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Fort Collins, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 21, 2017 · Synced Oct 4, 2026, 8:16 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 4, 2026, 8:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Study to Evaluate the Efficacy and Safety of Clear Skin Formula on Mitigating Mild to Moderate Non-cystic Acne

NCT05879406
View directory record Official record
Conditions
Non-Cystic Acne
Interventions
VitaMedica® Clear Skin Formula capsules, Placebo Capsules
Dietary Supplement · Other
Lead sponsor
Ablon Skin Institute Research Center
Other
Eligibility
18 Years to 40 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2024
U.S. locations
1
States / cities
Manhattan Beach, California
Source: ClinicalTrials.gov public record
Updated Apr 6, 2025 · Synced Oct 4, 2026, 8:16 PM 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 28, 2024 · Synced Oct 4, 2026, 8:16 PM EDT
Withdrawn Phase 2 Interventional

The Role of Antioxidant Supplementation in Keratoconus Patients

NCT02827747
View directory record Official record
Conditions
Keratoconus
Interventions
Antioxidants (Vitamins A,C,E) plus GSH, Placebo, Centrum, Dietary Sources
Other · Dietary Supplement · Combination Product
Lead sponsor
University of Miami
Other
Eligibility
18 Years to 45 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
1
States / cities
Palm Beach Gardens, Florida
Source: ClinicalTrials.gov public record
Updated Aug 16, 2021 · Synced Oct 4, 2026, 8:16 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 4, 2026, 8:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Antioxidants on Human Macular Pigments

NCT00718653
View directory record Official record
Conditions
Eye Health
Interventions
Lutein, Lutein plus green tea extract
Dietary Supplement
Lead sponsor
National Eye Institute (NEI)
NIH
Eligibility
50 Years to 70 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 3, 2009 · Synced Oct 4, 2026, 8:16 PM EDT
Not listed Not applicable Interventional Accepts healthy volunteers

Lycopene in Preventing Prostate Cancer in Healthy Participants

NCT00322114
View directory record Official record
Conditions
Prostate Cancer
Interventions
lycopene, placebo
Dietary Supplement · Other
Lead sponsor
University of Illinois at Chicago
Other
Eligibility
18 Years and older · Male only
Enrollment
150 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
Started 2006
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Sep 20, 2013 · Synced Oct 4, 2026, 8:16 PM EDT
Recruiting Phase 1Phase 2 Interventional

Soy Tomato Juice to Improve Outcomes in Pancreatitis

NCT07447687
View directory record Official record
Conditions
Recurrent Acute Pancreatitis, Chronic Pancreatitis
Interventions
Soy-tomato juice product, Will include a soy-tomato juice product to be consumed during the 4 week intervention phase. A total of about 12 ounces (administered in two small cans) of the juice will be consumed
Dietary Supplement
Lead sponsor
Ohio State University
Other
Eligibility
18 Years to 80 Years
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Oct 4, 2026, 8:16 PM 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 27, 2024 · Synced Oct 4, 2026, 8:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Dietary Antioxidants on Cardiovascular Risk Factors

NCT00756405
View directory record Official record
Conditions
Obesity, Hyperlipidemia, Hypertension
Interventions
Antioxidant diet, Antioxidant supplement, Placebo
Behavioral · Dietary Supplement
Lead sponsor
Christopher Gardner
Other
Eligibility
18 Years and older
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2008
U.S. locations
1
States / cities
Stanford, California
Source: ClinicalTrials.gov public record
Updated Feb 22, 2023 · Synced Oct 4, 2026, 8:16 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 4, 2026, 8:16 PM EDT