- Conditions
- Arthritis, Rheumatoid, Vitamin D Deficiency
- Interventions
- Placebo in arm A and Vitamin D in arm B, vitamin D 3 for arm A ,and matching placebo for arm B
- Drug
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Indianapolis, Indiana
Search Results
Search by objective public record fields.
Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results come from ClinicalTrials.gov. When the live registry is unavailable, a clearly labeled stored copy may be shown.
These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.
Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.
Showing 1–24
of 769
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Atherosclerosis, Systemic Lupus Erythematosus
- Interventions
- Cholecalciferol
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 9 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2014
- U.S. locations
- 1
- States / cities
- Charleston, South Carolina
- Conditions
- Cystic Fibrosis
- Interventions
- Vitamin D Powder, Vitamin D Oil
- Dietary Supplement
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years to 59 Years
- Enrollment
- 17 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Vitamin D Deficiency
- Interventions
- Ergocalciferol, Ergocalciferol placebo
- Dietary Supplement
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 92 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2006 – 2008
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- HIV-1 Infection
- Interventions
- EFV/FTC/TDF, Calcium Carbonate, Vitamin D3, Placebo for calcium carbonate, Placebo for vitamin D3
- Drug
- Lead sponsor
- Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
- Network
- Eligibility
- 18 Years and older
- Enrollment
- 167 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2013
- U.S. locations
- 38
- States / cities
- Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 27 more
- Conditions
- Type 1 Diabetes
- Interventions
- Vitamin D, Placebo
- Drug
- Lead sponsor
- Nationwide Children's Hospital
- Other
- Eligibility
- 4 Years to 18 Years
- Enrollment
- 38 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2014
- U.S. locations
- 1
- States / cities
- Columbus, Ohio
- Conditions
- Multiple Sclerosis, Relapsing-remitting
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 18 Years to 60 Years · Female only
- Enrollment
- 57 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2014
- U.S. locations
- 2
- States / cities
- San Francisco, California • Baltimore, Maryland
- Conditions
- Metabolism Changes, Vitamin D
- Interventions
- Vitamin C
- Other
- Lead sponsor
- Colorado State University
- Other
- Eligibility
- 18 Years to 40 Years
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Fort Collins, Colorado
- Conditions
- Vitamin D Deficiency, Nutritional Deficiency
- Interventions
- High dose Cholecalciferol, Cholecalciferol
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 0 Days to 45 Years
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2022
- U.S. locations
- 1
- States / cities
- Charleston, South Carolina
- Conditions
- Cancer Cachexia, Vitamin D Deficiency
- Interventions
- Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- David Travis Thomas
- Other
- Eligibility
- 45 Years to 75 Years
- Enrollment
- 1 participant
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018
- U.S. locations
- 1
- States / cities
- Lexington, Kentucky
- Conditions
- Vitamin D Deficiency, Vitamin D Insufficiency
- Interventions
- UVB treatment
- Device
- Lead sponsor
- Boston University
- Other
- Eligibility
- 22 Years and older
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Female Hormone Profile
- Interventions
- Vitamin D (Cholecalciferol ), Placebo Group
- Dietary Supplement
- Lead sponsor
- University of Southern California
- Other
- Eligibility
- 18 Years to 35 Years · Female only
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- Schizophrenia, Schizoaffective Disorder
- Interventions
- Cholecalciferol, Placebo
- Drug
- Lead sponsor
- NYU Langone Health
- Other
- Eligibility
- 18 Years to 65 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- Started 2015
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Vitamin D Deficiency, Gastrointestinal Diseases
- Interventions
- Sperti Lamp
- Device
- Lead sponsor
- Boston University
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 19 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2014
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency, Accidental Falls
- Interventions
- Vitamin D3, Vitamin E
- Dietary Supplement
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 65 Years and older
- Enrollment
- 68 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Winston-Salem, North Carolina
- Conditions
- Aging
- Interventions
- Vitamin D3 (cholecalciferol), fish oil
- Dietary Supplement · Drug
- Lead sponsor
- Augusta University
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 1,054 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2021
- U.S. locations
- 1
- States / cities
- Augusta, Georgia
- Conditions
- Prostate Cancer, Vitamin D Deficiency, Stress Reaction
- Interventions
- cholecalciferol, Standard of Care Prostate Biopsy - collection of 13th core for RNA-seq, Standard of Care Prostate Biopsies at baseline and after one year vitamin D3 supplementation, Allostatic Load
- Drug · Procedure · Diagnostic Test
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 50 Years to 75 Years · Male only
- Enrollment
- 60 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2022
- U.S. locations
- 1
- States / cities
- Charleston, South Carolina
- Conditions
- Metabolic Syndrome
- Interventions
- vitamin D3 (cholecalciferol)
- Dietary Supplement
- Lead sponsor
- Allina Health System
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 84 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2014
- U.S. locations
- 1
- States / cities
- Minneapolis, Minnesota
- 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
- Hypoparathyroidism
- Interventions
- Not listed
- Lead sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
- NIH
- Eligibility
- 18 Years and older
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- Started 2006
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Vitamin D Status
- Interventions
- Tanning spray, UVB
- Other
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 19 Years to 50 Years
- Enrollment
- 50 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2009
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Pre-Eclampsia, Depression, Inflammation, Vitamin D Deficiency
- Interventions
- mental health screening, education and referral program
- Other
- Lead sponsor
- Cedars-Sinai Medical Center
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 200 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2027
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- Conditions
- IBD, Inflammatory Bowel Diseases, Crohn Disease, Ulcerative Colitis, Vitamin D3 Deficiency
- Interventions
- Vitamin D3, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2029
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Cancer
- Interventions
- Vitamin D3, Calcium carbonate
- Dietary Supplement
- Lead sponsor
- Creighton University
- Other
- Eligibility
- 55 Years and older · Female only
- Enrollment
- 2,303 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2015
- U.S. locations
- 1
- States / cities
- Fremont, Nebraska