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ClinicalTrials.gov public records Last synced Nov 6, 2026, 9:26 AM EST

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Showing 1–24 of 91 matching trials from the live ClinicalTrials.gov search.

Filters: Intervention: vitamin D2 Clear all

Conditions: Chronic Kidney Disease Stages 3-5
Interventions: Ergocalciferol supplementation; Drug
Lead sponsor: Kaiser Permanente; Other
Eligibility: 18 Years and older
Enrollment: 6 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2011
U.S. locations: 1
States / cities: Los Angeles, California

Conditions: Osteopenia, Osteoporosis
Interventions: Pamidronate, Calcium and vitamin D; Drug
Lead sponsor: Masonic Cancer Center, University of Minnesota; Other
Eligibility: 1 Year to 20 Years
Enrollment: 63 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2015 – 2022
U.S. locations: 2
States / cities: Minneapolis, Minnesota • Seattle, Washington

Conditions: Musculoskeletal Pain
Interventions: Vitamin D 2, Vitamin D2 Placebo; Drug
Lead sponsor: University of North Carolina, Chapel Hill; Other
Eligibility: 18 Years to 65 Years
Enrollment: 71 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2023 – 2024
U.S. locations: 4
States / cities: Worcester, Massachusetts • St Louis, Missouri • Camden, New Jersey + 1 more

Conditions: Vitamin D Deficiency
Interventions: Vitamin D2, Placebo; Drug · Other
Lead sponsor: Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute); Other
Eligibility: 18 Years to 89 Years
Enrollment: 25 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2024
U.S. locations: 1
States / cities: Pittsburgh, Pennsylvania

Conditions: Inflammatory Bowel Disease, Crohn's Disease, Ulcerative Colitis
Interventions: ergocalciferol, Cholecalciferol; Dietary Supplement
Lead sponsor: Boston Children's Hospital; Other
Eligibility: 5 Years to 21 Years
Enrollment: 134 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008 – 2011
U.S. locations: 1
States / cities: Boston, Massachusetts

Conditions: Vitamin D Deficiency, Osteoporosis
Interventions: Vitamin D, placebo; Drug
Lead sponsor: University of Wisconsin, Madison; Other
Eligibility: 55 Years and older
Enrollment: 96 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2001 – 2004
U.S. locations: 1
States / cities: Madison, Wisconsin

Conditions: Impaired Fasting Glucose, Impaired Glucose Tolerance, Vitamin D Insufficiency
Interventions: Placebo, 50K vitamin D2; Drug
Lead sponsor: US Department of Veterans Affairs; Federal
Eligibility: 35 Years to 85 Years · Male only
Enrollment: 205 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2014
U.S. locations: 1
States / cities: Chicago, Illinois

Conditions: Chronic Kidney Disease
Interventions: Paricalcitol, Placebo; Drug
Lead sponsor: Amy Barton Pai; Other
Eligibility: 18 Years and older
Enrollment: 41 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2009 – 2011
U.S. locations: 1
States / cities: Albany, New York

Conditions: Atopic Dermatitis, Vitamin D Deficiency
Interventions: Vitamin D; Drug
Lead sponsor: Medical College of Wisconsin; Other
Eligibility: 1 Year to 18 Years
Enrollment: 7 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2010 – 2013
U.S. locations: 1
States / cities: Milwaukee, Wisconsin

Conditions: Peyronie's Disease
Interventions: Vitamin D2, Vitamin E, Testosterone Pellets; Drug
Lead sponsor: Men's Health Boston; Other
Eligibility: 18 Years to 70 Years · Male only
Enrollment: 75 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2013 – 2017
U.S. locations: 1
States / cities: Chestnut Hill, Massachusetts

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: Graves Disease, Graves' Disease, Hyperthyroidism
Interventions: Ergocalciferol 50,000 IU, Methimazole; Drug
Lead sponsor: Northwell Health; Other
Eligibility: 9 Years to 17 Years
Enrollment: 30 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2026
U.S. locations: 1
States / cities: New Hyde Park, New York

Conditions: Opioid Use Disorder
Interventions: [11C]-PHNO, Calcitriol, Placebo Control, PET Scan; Drug · Dietary Supplement · Other + 1 more
Lead sponsor: Yale University; Other
Eligibility: 18 Years to 50 Years
Enrollment: 5 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2024 – 2025
U.S. locations: 1
States / cities: New Haven, Connecticut

Conditions: Breast Cancer, Obesity, Hypovitaminosis D
Interventions: Vitamin D, Placebo; Dietary Supplement
Lead sponsor: Fred Hutchinson Cancer Center; Other
Eligibility: 50 Years to 75 Years · Female only
Enrollment: 218 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2010 – 2012
U.S. locations: 1
States / cities: Seattle, Washington

Conditions: Vitamin D Deficiency, Polytrauma, Orthopedic Disorder
Interventions: Ergocalciferol 8000 IU/ML Oral Liquid [DRISDOL], Propylene Glycol; Drug
Lead sponsor: New York City Health and Hospitals Corporation; Other
Eligibility: 18 Years to 65 Years
Enrollment: 60 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2017 – 2020
U.S. locations: 1
States / cities: The Bronx, New York

Conditions: Dysphagia, Fecal Incontinence, Urinary Incontinence
Interventions: Ergocalciferol (vitamin D2); Other
Lead sponsor: University of Wisconsin, Madison; Other
Eligibility: 70 Years and older
Enrollment: 50 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: Started 2006
U.S. locations: 1
States / cities: Madison, Wisconsin

Conditions: Osteoporosis
Interventions: Alendronate; Drug
Lead sponsor: Medical University of South Carolina; Other
Eligibility: 5 Years to 15 Years
Enrollment: 22 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2003 – 2009
U.S. locations: 1
States / cities: Charleston, South Carolina

Conditions: Vitamin D Deficiency, Coronary Artery Disease, Endothelial Dysfunction, Inflammation
Interventions: Ergocalciferol, Sugar pill; Drug · Other
Lead sponsor: Seth I. Sokol, M.D.; Other
Eligibility: 18 Years and older
Enrollment: 96 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2008 – 2011
U.S. locations: 2
States / cities: The Bronx, New York

Conditions: Vitamin D Inadequacy, Vitamin D Deficiency
Interventions: Cholecalciferol (vitamin D3), Ergocalciferol (vitamin D2), Placebo; Dietary Supplement
Lead sponsor: University of Wisconsin, Madison; Other
Eligibility: 65 Years and older
Enrollment: 64 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2007 – 2008
U.S. locations: 1
States / cities: Madison, Wisconsin

Conditions: Asthma, Vitamin D Deficiency
Interventions: Vitamin D2 + vitamin D3, Vitamin D3; Drug
Lead sponsor: Nationwide Children's Hospital; Other
Eligibility: 8 Years to 17 Years
Enrollment: 18 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2014 – 2016
U.S. locations: 1
States / cities: Columbus, Ohio

Conditions: Vitamin D Deficiency, Osteoporosis, Osteopenia
Interventions: Calcium 500mg with 200 IU Vitamin D - 2 tablets daily, Blood levels of Vitamin D, Serum CTX, Mg, Ca++ and iPTH, Usual sun exposure documentation, Dietary intake of calcium, vitamin D, magnesium; Drug · Procedure · Behavioral
Lead sponsor: McLennan County Medical Education and Research Foundation; Other
Eligibility: 70 Years and older · Female only
Enrollment: 60 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2006 – 2007
U.S. locations: 1
States / cities: Waco, Texas

Conditions: Leg Cramps, Nocturnal
Interventions: vitamin d, placebo; Drug
Lead sponsor: University of Wisconsin, Madison; Other
Eligibility: 50 Years and older
Enrollment: 29 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2007 – 2011
U.S. locations: 1
States / cities: Madison, Wisconsin

Conditions: Myopathic Symptoms
Interventions: Ergocalciferol, Placebo; Drug
Lead sponsor: Cedars-Sinai Medical Center; Other
Eligibility: 18 Years and older · Female only
Enrollment: 11 participants
Healthy volunteers: Accepts healthy volunteers
Timeline: 2012 – 2019
U.S. locations: 1
States / cities: Los Angeles, California

Conditions: Type 2 Diabetes, Vitamin D Deficiency
Interventions: Vitamin D2, Sugar pill; Dietary Supplement · Other
Lead sponsor: University of Alabama at Birmingham; Other
Eligibility: 12 Years to 18 Years
Enrollment: 31 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2013
U.S. locations: 1
States / cities: Birmingham, Alabama

Search by objective public record fields.

Effects of Ergocalciferol on Erythropoetin Stimulating Agent Dose

Prevention of Bone Loss After Pediatric Hematopoietic Cell Transplantation

Vitamin D to ENhance TraUma REcovery

Does Supplementing Vitamin D Deficiency Affect Fusion Healing Rates in Elective Foot and Ankle Surgery?

Vitamin D Levels in Children With IBD

Vitamin D Administration in the Nursing Home

D Vitamin Intervention in VA

Vascular Reactivity in Chronic Kidney Disease (CKD) Patients Receiving Paricalcitol Versus Placebo

Vitamin D Deficiency and Atopic Dermatitis

Testosterone Pellets Plus Vitamin D and E Versus Vitamin D and E Alone for the Treatment of Peyronie's Disease

Bioavailability and Biological Effects of Vitamin D2 Contained in Mushroom

Impact of Vitamin D Therapy on Thyroid Function and Antibody Levels in Pediatric Graves' Disease

Vitamin D in OUD: Exploration of Alterations on the Dopamine D2/D3 Receptor System

Vitamin D, Diet and Activity Study

Vitamin D and Bone Homeostasis in Ortho Polytrauma Patients

Evaluation of Potential Vitamin D Effects on Muscle: a Pilot Study

Safety and Efficacy of Alendronate (Fosamax) in Children With Osteoporosis

Vitamin D Repletion in Coronary Artery Disease

Clinical Approaches to Correcting Vitamin D Inadequacy and Maintaining Adequacy

Vitamin D in Pediatric Asthma: a Randomized Controlled Open-label Pilot Trial

Vitamin D Deficiency in Elderly African American Women in Central Texas

Vitamin D for Painful Nocturnal Leg Cramps

Is Treatment of Vitamin D Deficiency Associated With Resolution of Statin-Induced Muscular Symptoms

African American Children, Glycemic Control, and Type 2 Diabetes