- Conditions
- Cognitive Decline
- Interventions
- vitamin D3, omega-3 fatty acids (fish oil), Vitamin D3 placebo, Fish oil placebo
- Dietary Supplement · Drug
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 60 Years to 92 Years
- Enrollment
- 3,424 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2021
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
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 73–91
of 91
matching trials from the live ClinicalTrials.gov search.
- 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
- Nutrition Status, Bone Health
- Interventions
- Calcium/Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- United States Army Research Institute of Environmental Medicine
- Federal
- Eligibility
- 17 Years and older
- Enrollment
- 380 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2016
- U.S. locations
- 1
- States / cities
- Parris Island, South Carolina
- Conditions
- Bone Density, Bone Health, Fractures
- Interventions
- Vitamin D3 placebo, Fish oil placebo, Omega-3 fatty acids (fish oil), Vitamin D3
- Dietary Supplement · Drug
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 25,871 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2026
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- 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
- Conditions
- Systemic Lupus Erythematosus, SLE, Lupus
- Interventions
- Vitamin D3, Vitamin D3 placebo
- Drug
- Lead sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
- NIH
- Eligibility
- 18 Years and older
- Enrollment
- 57 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 8
- States / cities
- Birmingham, Alabama • San Francisco, California • Boston, Massachusetts + 5 more
- Conditions
- Juvenile Rheumatoid Arthritis
- Interventions
- Cholecalciferol, Calcium, Calcium and cholecalciferol, Placebo
- Dietary Supplement · Drug
- Lead sponsor
- University of Missouri-Columbia
- Other
- Eligibility
- 3 Years to 15 Years
- Enrollment
- 24 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 1995 – 2002
- U.S. locations
- 1
- States / cities
- Columbia, Missouri
- Conditions
- Crohn's Disease (CD), Ulcerative Colitis (UC)
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 30 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Fresno, California
- Conditions
- Hypercholesterolemia, Vitamin D Deficiency
- Interventions
- Vitamin D (1000 or 2000 IU/day), Placebo
- Dietary Supplement · Other
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 130 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2012
- U.S. locations
- 1
- States / cities
- San Francisco, California
- 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
- Interventions
- Mushroom Vitamin D2, Cholecalciferol, Vitamin D2 - Ergocalciferol, Mushroom Extract
- Dietary Supplement
- Lead sponsor
- Boston University
- Other
- Eligibility
- 18 Years to 64 Years
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Gastrointestinal Cancers, Prostate Cancer, Hypertension
- Interventions
- Vitamin D, Placebo
- Drug · Dietary Supplement
- Lead sponsor
- Dana-Farber Cancer Institute
- Other
- Eligibility
- 30 Years to 80 Years
- Enrollment
- 328 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2013
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Type 2 Diabetes
- Interventions
- Vitamin D3, Omega-3 fatty acid (fish oil), Vitamin D3 placebo, Fish oil placebo
- Dietary Supplement · Drug
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 22,220 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2024
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency, Falls
- Interventions
- 200 IU/d cholecalciferol, 1000 IU/d cholecalciferol, 2000 IU/d cholecalciferol, 4000 IU/d cholecalciferol
- Dietary Supplement
- Lead sponsor
- Johns Hopkins University
- Other
- Eligibility
- 70 Years and older
- Enrollment
- 688 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015 – 2019
- U.S. locations
- 2
- States / cities
- Baltimore, Maryland • Hagerstown, Maryland
- Conditions
- Vitamin D Deficiency, Metabolic Syndrome
- Interventions
- RDA Vitamin D3 only, Vitamin D2/3 Repletion only, Vitamin D2/3 Repletion + AEX, Vitamin D2/3 Repletion + RT
- Dietary Supplement · Other
- Lead sponsor
- Baltimore VA Medical Center
- Federal
- Eligibility
- 40 Years to 85 Years
- Enrollment
- 39 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2013
- U.S. locations
- 1
- States / cities
- Baltimore, Maryland
- Conditions
- Characteristics That Modify the Response to Cholecalciferol Treatment
- Interventions
- Vitamin D3, Placebo
- Dietary Supplement · Drug
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 666 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2022
- U.S. locations
- 5
- States / cities
- Los Angeles, California • Evanston, Illinois • Baltimore, Maryland + 2 more
- Conditions
- Benign Breast Disease
- Interventions
- Vitamin D and fish oil placebo, Fish oil and vitamin D placebo, Vitamin D placebo and fish oil placebo, Vitamin D and fish oil
- Dietary Supplement
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 55 Years to 67 Years · Female only
- Enrollment
- 3,894 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2023
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency, Hepatocellular Carcinoma
- Interventions
- Vitamin D3 4000 IU, Vitamin D3 2000 IU
- Drug
- Lead sponsor
- Andrea Branch
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Breast Cancer
- Interventions
- Vitamin D
- Drug
- Lead sponsor
- Stanford University
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 63 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- Stanford, California