- Conditions
- Age-related Macular Degeneration
- Interventions
- Omega-3 fatty acids (fish oil), Vitamin D3, Vitamin D3 placebo, Fish oil placebo
- Drug · Dietary Supplement
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 25,871 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2024
- 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 505–528
of 554
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Sickle Cell Disease
- Interventions
- Not listed
- Lead sponsor
- Icahn School of Medicine at Mount Sinai
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 50 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Obesity, Overweight
- Interventions
- Orange Juice fortified with Calcium and Vitamin D, Orange juice without Ca or VitD, Nutritional Counseling
- Dietary Supplement · Behavioral
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 130 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2005 – 2006
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- 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
- Quality of Life, Body Mass Index
- Interventions
- MannaBears, AlgaeCal Calcium, Calcium carbonate, Vitamin D3
- Dietary Supplement
- Lead sponsor
- Integrative Health Technologies, Inc.
- Network
- Eligibility
- 5 Years to 19 Years
- Enrollment
- 200 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2014
- U.S. locations
- 1
- States / cities
- San Antonio, Texas
- Conditions
- Diabetic Nephropathies
- Interventions
- Calcitriol, Losartan
- Dietary Supplement · Drug
- Lead sponsor
- Weill Cornell Medical College in Qatar
- Other
- Eligibility
- 21 Years to 80 Years
- Enrollment
- 56 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2015
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- HIV-associated Co-morbidities
- Interventions
- conventional vitamin D treatment, tiered/titrated vitamin D dosing
- Dietary Supplement · Drug
- Lead sponsor
- Andrea Branch
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 62 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Respiratory Infection
- Interventions
- Vitamin D3 (cholecalciferol), Placebo Sugar Pill
- Dietary Supplement
- Lead sponsor
- University of Iowa
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 98 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2010
- U.S. locations
- 1
- States / cities
- Iowa City, Iowa
- Conditions
- Hypovitaminosis D
- Interventions
- 100,000 IU cholecalciferol, Placebo
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Vitamin D Deficiency
- Interventions
- Cholecalciferol
- Dietary Supplement
- Lead sponsor
- Children's Hospital of Philadelphia
- Other
- Eligibility
- 12 Years to 17 Years
- Enrollment
- 39 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2012
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- Prediabetes, Type 2 Diabetes
- Interventions
- Vitamin D (Cholecalciferol), Placebo
- Dietary Supplement · Other
- Lead sponsor
- Tufts Medical Center
- Other
- Eligibility
- 30 Years and older
- Enrollment
- 2,423 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2018
- U.S. locations
- 25
- States / cities
- Phoenix, Arizona • Los Angeles, California • Palo Alto, California + 20 more
- Conditions
- Bioequivalence of Vitamin D in Healthy Adults
- Interventions
- vitamin D3
- Dietary Supplement
- Lead sponsor
- Church & Dwight Company, Inc.
- Industry
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 9 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2017
- U.S. locations
- 1
- States / cities
- Princeton, New Jersey
- Conditions
- Colorectal Polyps, Colorectal Adenoma, Adenocarcinoma
- Interventions
- placebo and Calcitriol, Calcium and Calcitriol
- Drug
- Lead sponsor
- Rockefeller University
- Other
- Eligibility
- 48 Years to 72 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2005 – 2009
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Type 2 Diabetes Mellitus
- Interventions
- Vitamin D3 2000 international units daily, Vitamin C 500mg daily
- Dietary Supplement
- Lead sponsor
- ProMedica Health System
- Other
- Eligibility
- 21 Years to 75 Years
- Enrollment
- 37 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2010
- U.S. locations
- 3
- States / cities
- Sylvania, Ohio • Toledo, Ohio
- 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
- Secondary Hyperparathyroidism, Chronic Kidney Disease
- Interventions
- Paricalcitol, Calcitriol
- Drug
- Lead sponsor
- Washington University School of Medicine
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 110 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2013
- U.S. locations
- 4
- States / cities
- Chicago, Illinois • Evanston, Illinois • Detroit, Michigan + 1 more
- Conditions
- Vitamin D Deficiency, Secondary Hyperparathyroidism, Obesity
- Interventions
- Ergocalciferol, Cholecalciferol
- Drug
- Lead sponsor
- Weill Medical College of Cornell University
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 60 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2006 – 2007
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Hypovitaminosis D
- Interventions
- Cholecalciferol, Placebo
- Dietary Supplement
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 100 Years
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2017
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- HIV Infections
- Interventions
- Vitamin D supplement, Placebo
- Dietary Supplement · Other
- Lead sponsor
- University of North Carolina, Chapel Hill
- Other
- Eligibility
- 18 Years to 24 Years
- Enrollment
- 207 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2010
- U.S. locations
- 14
- States / cities
- Los Angeles, California • San Francisco, California • Washington D.C., District of Columbia + 10 more
- Conditions
- Vitamin D Deficiency, Preterm Infants, Bronchopulmonary Dysplasia
- Interventions
- Cholecalciferol, Placebo
- Dietary Supplement
- Lead sponsor
- University of Alabama at Birmingham
- Other
- Eligibility
- 1 Minute to 7 Days
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2016
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama
- Conditions
- Vitamin D Deficiency, Short Bowel Syndrome
- Interventions
- Ultraviolet B lamp
- Device
- Lead sponsor
- University of Nebraska
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 11 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- COPD, Asthma, Pulmonary Function, Pneumonia
- Interventions
- Vitamin D3, fish oil, Vitamin D3 placebo, Fish oil placebo
- Dietary Supplement
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 25,871 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2027
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Osteoporosis
- Interventions
- Small Particle Size Calcium Carbonate Supplement, Large Particle Size Calcium Carbonate Supplement, Vitamin D, Calcium Placebo
- Dietary Supplement
- Lead sponsor
- Purdue University
- Other
- Eligibility
- 12 Years to 14 Years · Female only
- Enrollment
- 55 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007
- U.S. locations
- 1
- States / cities
- West Lafayette, Indiana
- Conditions
- Infant, Very Low Birth Weight, Calcium Deficiency, Vitamin D Deficiency
- Interventions
- 400 IU Cholecalciferol- Vitamin D Daily
- Dietary Supplement
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 1 Day to 3 Days
- Enrollment
- 68 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2013
- U.S. locations
- 2
- States / cities
- Charleston, South Carolina