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ClinicalTrials.gov public records Last synced Oct 10, 2026, 6:16 PM EDT

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Showing 1–24 of 35 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Diet Zinc Clear all
Completed Phase 2 Interventional

Zinc Supplements in Lowering Cadmium Levels in Smokers

NCT00376987
View directory record Official record
Conditions
Bladder Cancer, Cervical Cancer, Esophageal Cancer, Gastric Cancer, Head and Neck Cancer, Kidney Cancer, Leukemia, Liver Cancer, Lung Cancer, Pancreatic Cancer, Tobacco Use Disorder
Interventions
zinc oxide
Dietary Supplement
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
21 Years to 120 Years
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2015
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated May 30, 2017 · Synced Oct 10, 2026, 6:16 PM EDT
Withdrawn No phase listed Observational

Zinc Supplementation Improves Cardiovascular Morbidity in Patients With Diabetes Mellitus

NCT05000762
View directory record Official record
Conditions
Diabetes Mellitus, Type 2, Cardiovascular Diseases
Interventions
Zinc
Dietary Supplement
Lead sponsor
Wayne State University
Other
Eligibility
18 Years to 75 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
1
States / cities
Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Dec 12, 2023 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Phase 1 Interventional

Ketogenic Diet as Adjunctive Treatment in Refractory/End-stage Glioblastoma Multiforme: a Pilot Study

NCT01865162
View directory record Official record
Conditions
Glioblastoma Multiforme
Interventions
ketogenic diet
Other
Lead sponsor
Mid-Atlantic Epilepsy and Sleep Center, LLC
Other
Eligibility
18 Years to 65 Years
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Nov 9, 2022 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Development and Health of Rural Chinese Children Fed Meat as a Daily Complementary Food From 6-18 Mos of Age

NCT00726102
View directory record Official record
Conditions
Nutritional Deficiencies
Interventions
Meat, Cereal, fortified rice cereal
Other
Lead sponsor
University of Colorado, Denver
Other
Eligibility
6 Months to 18 Months
Enrollment
1,488 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2014
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Apr 28, 2016 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Effects of Calcium and Phytate on Zinc Absorption

NCT00754390
View directory record Official record
Conditions
Dietary Zinc Absorption
Interventions
Moderate Calcium, Low phytate Diet, Moderate Calcium, High Phytate Diet, High Calcium, Low Phytate Diet, High Calcium, High Phytate Diet
Dietary Supplement
Lead sponsor
USDA Grand Forks Human Nutrition Research Center
Federal
Eligibility
21 Years to 50 Years · Female only
Enrollment
17 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Grand Forks, North Dakota
Source: ClinicalTrials.gov public record
Updated Jul 2, 2018 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Determination of Pre-Absorptive Dissociation of Zinc From a Zinc Amino Acid Complex in Healthy Men

NCT03934346
View directory record Official record
Conditions
Fractional Zinc Absorption
Interventions
Zinc amino acid complex
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
13 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Jan 22, 2020 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Phase 1 Interventional Results available

Pre-operative IRX-2 in Early Stage Breast Cancer (ESBC)

NCT02950259
View directory record Official record
Conditions
Breast Neoplasm, Breast Neoplasm, Male, Triple Negative Breast Cancer
Interventions
Cyclophosphamide, Indomethacin, Omeprazole, Multivitamin
Drug · Dietary Supplement
Lead sponsor
Providence Health & Services
Other
Eligibility
Not listed
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Dec 3, 2025 · Synced Oct 10, 2026, 6:16 PM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Effects of Daily Beef Intake, as a Component of a Heart-Healthy Diet on Cellular Zinc

NCT05236374
View directory record Official record
Conditions
Zinc Deficiency, Inflammation, Metabolic Diseases, Vascular Diseases
Interventions
Beef protein
Other
Lead sponsor
University of California, Davis
Other
Eligibility
55 Years to 70 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2026
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Nutrition Interventions to Support the Immune System in Response to Stress

NCT02053506
View directory record Official record
Conditions
Mitigation of Immune Function Decrements in Response to Stress
Interventions
Immune-enhancing nutritional beverage, Probiotics (BB-12), Placebo (for nutritional beverage and probiotic)
Dietary Supplement
Lead sponsor
United States Army Research Institute of Environmental Medicine
Federal
Eligibility
18 Years to 45 Years
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2014 – 2016
U.S. locations
1
States / cities
Natick, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 2, 2017 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effects of Dietary Folate and Phytate Zinc Absorption: Zinc Amino Acid Complexes vs. Zinc-chloride

NCT05273710
View directory record Official record
Conditions
Dietary Zinc Absorption
Interventions
Regular toast and juice, High phytate toast and juice, Regular toast and juice, with folic acid
Other
Lead sponsor
University of California, Berkeley
Other
Eligibility
19 Years to 50 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
Berkeley, California
Source: ClinicalTrials.gov public record
Updated Dec 21, 2022 · Synced Oct 10, 2026, 6:16 PM EDT
Completed No phase listed Observational Accepts healthy volunteers

Zinc and the Synthesis of Zinc Binding Proteins (Protocol B)

NCT01221129
View directory record Official record
Conditions
Zinc Deficiency
Interventions
Acclimation, Dietary zinc depletion, Dietary zinc repletion
Other
Lead sponsor
University of Florida
Other
Eligibility
21 Years to 35 Years · Male only
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
Gainesville, Florida
Source: ClinicalTrials.gov public record
Updated Sep 20, 2011 · Synced Oct 10, 2026, 6:16 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 10, 2026, 6:16 PM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

2021 PMT iAge® Intervention Trial by Edifice Health

NCT04983017
View directory record Official record
Conditions
Chronic Inflammation, Inflammaging
Interventions
Dietary supplement, Placebo
Dietary Supplement · Other
Lead sponsor
Edifice Health
Industry
Eligibility
18 Years and older
Enrollment
781 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2022
U.S. locations
2
States / cities
Greenbrae, California • Suwanee, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Results available

Glutathione Metabolism in Adolescents With Type 1 Diabetes - Study B

NCT00858273
View directory record Official record
Conditions
Diabetes Mellitus, Type 1
Interventions
Antioxidant supplement, Diabetes treatment, Regular Insulin
Dietary Supplement · Other · Drug
Lead sponsor
Nemours Children's Clinic
Other
Eligibility
12 Years to 21 Years
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 17, 2023 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

A Clinical Study to Assess the Effect of a Dietary Supplement on Menstrual Cycle Symptoms

NCT07267728
View directory record Official record
Conditions
Premenstrual Syndrome, Menstrual Pain
Interventions
DITTO Cycle Supplement
Dietary Supplement
Lead sponsor
Muse Nutrition Ltd
Industry
Eligibility
18 Years to 45 Years · Female only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025
U.S. locations
1
States / cities
Las Vegas, Nevada
Source: ClinicalTrials.gov public record
Updated Aug 17, 2026 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Bioavailability of Zinc and Iron From a Whey-based Protein Supplement Consumed With a Habitual Plant-based Diet

NCT02208622
View directory record Official record
Conditions
Nutritional Deficiency
Interventions
Study 1: Whey Supplement Day 1, Study 1: Whey Supplement Day 2, Study 2: Whey Supplement
Dietary Supplement
Lead sponsor
University of Colorado, Denver
Other
Eligibility
2 Years to 3 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2018
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Jul 5, 2019 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Community Trial of Zinc Supplementation on Preschool Child Mortality and Morbidity in Southern Nepal

NCT00109551
View directory record Official record
Conditions
Nutrition
Interventions
zinc sulphate dietary supplement, iron sulphate-folic acid dietary supplement
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
1 Month to 36 Months
Enrollment
58,000 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2006
U.S. locations
2
States / cities
Baltimore, Maryland • Ithaca, New York
Source: ClinicalTrials.gov public record
Updated May 1, 2013 · Synced Oct 10, 2026, 6:16 PM EDT
Not listed Phase 2 Interventional Accepts healthy volunteers

Pilot Study: Impact of Biomarker-Guided Dietary Supplementation on Quality-of-Life Measures in Subjects With Chronic Pain

NCT06247813
View directory record Official record
Conditions
Chronic Pain
Interventions
Inflammation Support Formula, Nerve Health Formula, Redox Support Formula
Dietary Supplement
Lead sponsor
Ethos Research & Development
Industry
Eligibility
18 Years to 75 Years
Enrollment
75 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2025
U.S. locations
1
States / cities
Newport, Kentucky
Source: ClinicalTrials.gov public record
Updated Sep 19, 2024 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Curves 30/30 Study

NCT04344821
View directory record Official record
Conditions
Weight Loss
Interventions
Curves Calcium, Placebo
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
18 Years to 45 Years · Female only
Enrollment
57 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2012
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Apr 15, 2020 · Synced Oct 10, 2026, 6:16 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 10, 2026, 6:16 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

An Evaluation of Zinc Status Biomarkers

NCT02861352
View directory record Official record
Conditions
Inflammation, Oxidative Stress
Interventions
Diet zinc
Other
Lead sponsor
UCSF Benioff Children's Hospital Oakland
Other
Eligibility
18 Years to 50 Years · Male only
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Oakland, California
Source: ClinicalTrials.gov public record
Updated Nov 24, 2020 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Phase 2 Interventional Results available

Alii Supplement Study

NCT07271316
View directory record Official record
Conditions
Nutrient Deficiency, Happiness, Digestive Health, Vulnerability to Disease, Mood Swings, Energy
Interventions
Alii Supplement
Dietary Supplement
Lead sponsor
Texas Christian University
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
Fort Worth, Texas
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 10, 2026, 6:16 PM EDT
Terminated Phase 3 Interventional Results available

The CRISIS Prevention Study

NCT00395161
View directory record Official record
Conditions
Sepsis
Interventions
Metoclopramide, Zinc, Glutamine, Selenium, saline, sterile water, selenium, whey-protein
Drug · Dietary Supplement · Other
Lead sponsor
Michael Dean
Other
Eligibility
12 Months to 17 Years
Enrollment
293 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
7
States / cities
Little Rock, Arkansas • Los Angeles, California • Washington D.C., District of Columbia + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 18, 2013 · Synced Oct 10, 2026, 6:16 PM EDT
Completed Phase 1 Interventional

Burn Micronutrient Repletion Pilot Study

NCT00879723
View directory record Official record
Conditions
Burn
Interventions
Vitamin and Mineral supplementation
Dietary Supplement
Lead sponsor
Southern Illinois University
Other
Eligibility
19 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Springfield, Illinois
Source: ClinicalTrials.gov public record
Updated Aug 26, 2015 · Synced Oct 10, 2026, 6:16 PM EDT