Clinical trials: Vitamin D3
Nutrition, Healthy
Bioavailability of Vitamin D(25(OH)D) and Omega-3 Fatty Acid (DHA) Enhanced Chicken
The purpose of the research is to evaluate if chicken or eggs obtained from chickens that are fed a diet that contains omega-3 fatty acids (DHA/EPA), or vitamin D (as 25(OH)D) provides additional health benefits by improving the…
- Trial name
- NCT05248737
- Testing
- non-25(OH)D fortified chicken/eggs plus vitamin D3 supplement, non-DHA bio-enhanced chicken plus supplement DHA Omega-3
- Where
- United States
- Volunteers
- 98 people, healthy volunteers welcome
- Sponsor
- Cornell University
Hypovitaminosis D
The Effectiveness of a Weight-dependent Algorithm for Dosing Vitamin D.
Vitamin D is essential for calcium absorption and bone growth, brain development, and immune system function. Vitamin D is produced by the body in response to natural sunlight.
- Trial name
- NCT07876843
- Testing
- Vitamin D3, Calcium, and Vitamin C
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Atlantic Health System
Cancer, Cardiovascular Disease
Vitamin D and Omega-3 Trial (VITAL)
The VITamin D and OmegA-3 TriaL (VITAL) is a randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish oil, 1 gram)…
- Trial name
- VITAL (NCT01169259)
- Testing
- vitamin D3, omega-3 fatty acids (fish oil)
- Where
- United States
- Volunteers
- 25,871 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Healthy Adult Participants, Vitamin D Insufficiency
Supplementation of Cholecalciferol and Related Active Metabolites Through Bioenhancing Layer's Eggs
The purpose of this research is to evaluate if 1) consumption of vitamin D3- or 25(OH)D3-biofortified eggs will increase vitamin D and 25(OH)D status in young adults who consume these bioenhanced eggs, 2) to determine if the gut…
- Trial name
- SCRAMBLE (NCT07859280)
- Testing
- Vitamin D3 bioenhanced eggs, 25(OH)D3 bioenhanced eggs
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Cornell University
Acute Stress Reaction
The Efficacy of Vitamin D Supplementation to Sustain Performance Outcomes
The goal of this clinical trial is to find out if vitamin D supplements help healthy adults maintain their cognitive and simple physical task performance and emotional state during highly stressful situations.
- Trial name
- NCT07654777
- Testing
- Vitamin D3 (Cholecalciferol)
- Where
- United States
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Walter Reed Army Institute of Research (WRAIR)
Healthy Volunteer
Supplementation Absorption Comparison
The goal of this interventional study is to compare the absorption of supplements with and without absorption enhancing technology in healthy volunteers.
- Trial name
- PHAABS (NCT07791797)
- Testing
- Aquacelle® Omega 3, Comparator Omega 3, Plexosome® Vitamin D3
- Where
- Australia
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- RDC Clinical Pty Ltd
Infant Vitamin K Status, Vitamin K Deficiency Bleeding
The OK Daily Study
The OK Daily Study is a multi-centred, part-randomised, part blinded, four cohort study. We are exploring daily dietary supplementation with vitamin K2, specifically menaquinone-7 (MK-7), given to breastfed infants or…
- Trial name
- NCT07620236
- Testing
- Combined MK-7 + vitamin D3 drops, Vitamin D3 Drops, MK-7 capsules
- Volunteers
- 134 people, healthy volunteers welcome
- Sponsor
- Norfolk and Norwich University Hospitals NHS Foundation Trust
COPD, Asthma
LungVITamin D and OmegA-3 Trial (lungVITAL)
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is an ongoing randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids…
- Conditions
- COPD, Asthma, Pulmonary Function, Pneumonia
- Trial name
- lungVITAL (NCT01728571)
- Testing
- Vitamin D3, fish oil
- Where
- United States
- Volunteers
- 25,871 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
COVID-19
Can Vitamin D Reduce the Burden of COVID-19?
The purpose of this study is to compare the risks of COVID-19 in individuals from the Chicagoland area and other communities in the United States randomized to low (400 IU/day) versus moderate (4,000 IU/day) dose vitamin D.
- Trial name
- NCT07128069
- Testing
- Vitamin D 400IU, Vitamin D 4000IU
- Where
- United States
- Volunteers
- 2,093 people, healthy volunteers welcome
- Sponsor
- University of Chicago
SARS-CoV-2 Infection
Low vs. Moderate to High Dose Vitamin D for Prevention of COVID-19
The purpose of this study is to compare the risks of COVID-19 in individuals from Chicagoland communities randomized to low (400 IU/day) vs. moderate (4,000 IU/day) or high (10,000 IU/day) dose vitamin D.
- Trial name
- NCT04868903
- Testing
- Vitamin D3
- Where
- 2 sites in United States
- Volunteers
- 1,475 people, healthy volunteers welcome
- Sponsor
- University of Chicago
Molar Incisor Hypomineralization
Assessment of the Remineralization Efficacy of Vitamin D in the Treatment of MIH. In Vitro Study and In Situ Randomized Double-Blind Placebo Clinical Trial.
In child patients with molar incisor hypo mineralization, Will Vitamin D mouth wash offer more success for patients with MIH as regards better MIH TNI index, decrease plaque accumulation, more gingival health and less bleeding on…
- Trial name
- NCT06515548
- Testing
- Vitamin D3 mouth wash
- Where
- Egypt
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Cairo University
Asthma
Randomized Trial: Maternal Vitamin D Supplementation to Prevent Childhood Asthma (VDAART)
Vitamin D supplementation given to pregnant women will prevent asthma in their offspring and children.
- Trial name
- VDAART (NCT00920621)
- Testing
- Vitamin D 3 cholecalciferol, Vitamin D3
- Where
- 3 sites in United States
- Volunteers
- 876 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Bone Density, Body Composition
VITamin D and OmegA-3 TriaL: Effects on Bone Structure and Architecture (VITAL)
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is a randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or fish oil (1 gram of omega-3 fatty…
- Conditions
- Bone Density, Body Composition, Bone Health
- Trial name
- VITAL (NCT01747447)
- Testing
- omega-3 fatty acids (fish oil), Vitamin D3
- Where
- United States
- Volunteers
- 771 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Fractures
VITamin D and OmegA-3 TriaL (VITAL): Fractures, Vitamin D and Genetic Markers
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is a randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish…
- Trial name
- NCT01704859
- Testing
- omega-3 fatty acids (fish oil), Vitamin D3
- Where
- United States
- Volunteers
- 25,871 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Type 2 Diabetes
Study of Vitamin D and Omega-3 Supplementation for Preventing Diabetes
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is an ongoing randomized clinical trial in 25,875 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids…
- Trial name
- NCT01633177
- Testing
- Vitamin D3, Omega-3 fatty acid (fish oil)
- Where
- United States
- Volunteers
- 22,220 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Asthma
Vitamin D Supplementation During Pregnancy for Prevention of Asthma in Childhood
The aim of this study is to prevent asthma symptoms (recurrent wheeze) in childhood by supplementation with high dose vitamin D to the mother during pregnancy.
- Trial name
- ABCvitaminD (NCT00856947)
- Testing
- Cholecalciferol D3
- Where
- 2 sites in Denmark
- Volunteers
- 600 people, healthy volunteers welcome
- Sponsor
- Copenhagen Studies on Asthma in Childhood
Malocclusions, Canine Retraction
Assessment of the Locally Administrated Vitamin D3 and Corticision Efficacy on Orthodontic Canine Retraction
To study the effect vitamin D effect on orthodontic tooth movement when used in combination with coticision technique, independent t test or an equivalent non-parametric test will be used for comparison.
- Trial name
- NCT07455656
- Testing
- patients will receive local application of vitamin D3 combined with corticision
- Where
- Egypt
- Volunteers
- 16 people, healthy volunteers welcome
- Sponsor
- Al-Azhar University
Vitamin D Deficiency (10 ng/mL to 30 ng/mL), Athletes
High-Dose Vitamin D Supplementation and Exercise Effects on Vitamin D Metabolites in Professional Football Players
This randomized, single-blind, placebo-controlled pilot study investigated the effects of high-dose vitamin D₃ supplementation and football-specific physical exercise on vitamin D metabolite concentrations in professional male…
- Conditions
- Vitamin D Deficiency (10 ng/mL to 30 ng/mL), Athletes, Football Players, Exercise Physiology
- Trial name
- VitD-Football (NCT07310329)
- Testing
- Vitamin D₃
- Where
- Poland
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Wroclaw University of Health and Sport Sciences
Depression, Depressive Symptoms
VITAL-DEP: Depression Endpoint Prevention in the VITamin D and OmegA-3 TriaL
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is an ongoing randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids…
- Conditions
- Depression, Depressive Symptoms, Mood
- Trial name
- VITAL-DEP (NCT01696435)
- Testing
- vitamin D3, omega-3 fatty acids (fish oil)
- Where
- United States
- Volunteers
- 18,353 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Autoimmune Diseases, Systemic Inflammatory Process
Vitamin D and Fish Oil for Autoimmune Disease, Inflammation and Knee Pain
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is a randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor® fish…
- Conditions
- Autoimmune Diseases, Systemic Inflammatory Process, Knee Pain Chronic, Osteoarthritis
- Trial name
- VITAL (NCT01351805)
- Testing
- Fish Oil, Vitamin D
- Where
- United States
- Volunteers
- 25,871 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital