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ClinicalTrials.gov public records Last synced Oct 3, 2026, 10:54 AM EDT

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

Showing 25–40 of 40 matching trials from the live ClinicalTrials.gov search.

Filters: Intervention: D3 4000 IU/day Clear all

Conditions: Asthma
Interventions: Cholecalciferol; Dietary Supplement
Lead sponsor: University of Pittsburgh; Other
Eligibility: 6 Years to 14 Years
Enrollment: 48 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2015
U.S. locations: 1
States / cities: Pittsburgh, Pennsylvania

Conditions: Chronic Kidney Disease
Interventions: 1000 IU of Vitamin D3, 4000 IU of Vitamin D3; Drug
Lead sponsor: Emory University; Other
Eligibility: 9 Years to 21 Years
Enrollment: 98 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2013 – 2014
U.S. locations: 1
States / cities: Atlanta, Georgia

Conditions: Vitamin D Deficiency, Metabolic Syndrome, Prediabetes
Interventions: Mushroom with 600 IU vitamin D2, Mushroom with 4000 IU Vitamin D2, 600 IU Vitamin D3 and untreated mushroom, 4000 IU Vitamin D3 and untreated mushroom, Placebo; Dietary Supplement · Drug
Lead sponsor: Icahn School of Medicine at Mount Sinai; Other
Eligibility: 30 Years to 90 Years
Enrollment: 47 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2013
U.S. locations: 1
States / cities: New York, New York

Conditions: Muscle Pain, Joint Pain
Interventions: Vitamin D3; Drug
Lead sponsor: HealthPartners Institute; Other
Eligibility: 18 Years and older · Female only
Enrollment: 116 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2012 – 2015
U.S. locations: 1
States / cities: Minneapolis, Minnesota

Conditions: Vitamin D Deficiency
Interventions: Cholecalciferol; Dietary Supplement
Lead sponsor: Augusta University; Other
Eligibility: 13 Years to 45 Years
Enrollment: 74 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2011 – 2015
U.S. locations: 1
States / cities: Augusta, Georgia

Conditions: Breast Cancer
Interventions: Cholecalciferol; Drug
Lead sponsor: Inova Health Care Services; Other
Eligibility: 18 Years and older · Female only
Enrollment: 8 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2019
U.S. locations: 1
States / cities: Fairfax, Virginia

Conditions: Gestational Hypertension, Toxemia, Superimposed Preeclampsia, Eclampsia, HELLP Syndrome
Interventions: Vitamin D3; Drug
Lead sponsor: Stony Brook University; Other
Eligibility: 18 Years and older · Female only
Enrollment: 412 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2016 – 2019
U.S. locations: 1
States / cities: Stony Brook, New York

Conditions: Osteoporosis
Interventions: 600 IU Vitamin D3, 2000 IU Vitamin D3, 4000 IU Vitamin D3; Dietary Supplement
Lead sponsor: Rutgers University; Other
Eligibility: 50 Years to 72 Years · Female only
Enrollment: 81 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2010 – 2019
U.S. locations: 1
States / cities: New Brunswick, New Jersey

Conditions: Osteoporosis, Aging
Interventions: Vitamin D3, Calcium Citrate (Citracal); Dietary Supplement
Lead sponsor: Creighton University; Other
Eligibility: 57 Years and older · Female only
Enrollment: 273 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2007 – 2011
U.S. locations: 1
States / cities: Omaha, Nebraska

Conditions: Vitamin D Deficiency, Cognitive Decline
Interventions: Vitamin D3; Dietary Supplement
Lead sponsor: University of California, Davis; Other
Eligibility: 65 Years to 90 Years
Enrollment: 180 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2019 – 2026
U.S. locations: 1
States / cities: Walnut Creek, California

Conditions: Seasonal Allergic Rhinitis
Interventions: Vitamin D3, Placebo, Fluticasone Propionate; Drug
Lead sponsor: University of Chicago; Other
Eligibility: 18 Years to 45 Years
Enrollment: 35 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2011
U.S. locations: 1
States / cities: Chicago, Illinois

Conditions: Urticaria, Angioedema, Hives, Swelling
Interventions: High Dose Vitamin D3, Low Dose Vitamin D3; Drug
Lead sponsor: University of Nebraska; Other
Eligibility: 19 Years and older
Enrollment: 42 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2013
U.S. locations: 1
States / cities: Omaha, Nebraska

Conditions: Diabetic Kidney Disease
Interventions: Vitamin D3; Dietary Supplement
Lead sponsor: Medical University of South Carolina; Other
Eligibility: 18 Years and older
Enrollment: 54 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2013
U.S. locations: 1
States / cities: Charleston, South Carolina

Conditions: Sarcopenia, Falls
Interventions: vitamin D3, Placebo; Dietary Supplement
Lead sponsor: Tufts University; Other
Eligibility: 65 Years and older · Female only
Enrollment: 24 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2011
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Vitamin D Deficiency
Interventions: cholecalciferol (vitamin D3), cholecalciferol; Drug
Lead sponsor: Medical University of South Carolina; Other
Eligibility: 16 Years to 45 Years · Female only
Enrollment: 501 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2004 – 2010
U.S. locations: 1
States / cities: Charleston, South Carolina

Conditions: Obesity, Glucose Intolerance, Inflammation
Interventions: Placebo, Vitamin D 3 cholecalciferol; Dietary Supplement
Lead sponsor: University of Missouri-Columbia; Other
Eligibility: 9 Years to 19 Years
Enrollment: 44 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2013
U.S. locations: 1
States / cities: Columbia, Missouri

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Vitamin D and Severe Asthma Exacerbations

Two Vitamin D Dosing Strategies in Children With Chronic Kidney Disease

Bioavailability and Biological Effects of Vitamin D2 Contained in Mushroom

Vitamin D3 Effects on Musculoskeletal Symptoms With Use of Aromatase Inhibitors

Vitamin D Supplementation in Overweight/Obese African American Adults and Youth (D-SUNNY)

Vitamin D Supplementation in Women With DCIS and/or LCIS

A Randomized Control Trial of Vitamin D Prophylaxis in the Prevention of Hypertensive Disorders of Pregnancy

Vitamin D Supplementation in Obesity and Weight Loss (3DD Study)

Vitamin D Supplementation in Older Women

High-dose Vitamin D Supplements in Older Adults

Vitamin D Plus Fluticasone Propionate

The Role of Vitamin D in Chronic Urticaria and Angioedema Treatment

Impact of Vitamin D on Diabetic Kidney Disease in African Americans

A Pilot Study of the Impact of Vitamin D3 on Muscle Performance in Elderly Women

Evaluation of Vitamin D Requirements During Pregnancy

Vitamin D to Improve Glucose Metabolism and Reduce Inflammation in Obese Adolescents