- Conditions
- Hypertension, Vitamin D Deficiency
- Interventions
- Cholecalciferol
- Drug
- Lead sponsor
- Loyola University
- Other
- Eligibility
- 25 Years to 45 Years
- Enrollment
- 5 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018
- U.S. locations
- 1
- States / cities
- Maywood, Illinois
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 25–48
of 326
matching trials from the live ClinicalTrials.gov search.
- 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
- Vitamin Deficiency
- Interventions
- EZPAK, Placebo
- Dietary Supplement
- Lead sponsor
- Optimal Health Research
- Other
- Eligibility
- 26 Years to 75 Years
- Enrollment
- 275 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2021
- U.S. locations
- 1
- States / cities
- Salt Lake City, Utah
- Conditions
- Osteoporosis
- Interventions
- PTH(1-84), Ibandronate, Placebo injection, Placebo pills
- Drug · Other
- Lead sponsor
- University of California, San Francisco
- Other
- Eligibility
- 55 Years to 75 Years · Female only
- Enrollment
- 44 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2011
- U.S. locations
- 1
- States / cities
- San Francisco, California
- Conditions
- COVID-19
- Interventions
- vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 2,024 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2020 – 2024
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Depression, Postpartum Depression
- Interventions
- Vitamin D3 (Cholecalciferol), Placebo
- Dietary Supplement · Other
- Lead sponsor
- St. Luke's-Roosevelt Hospital Center
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 151 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Multiple Myeloma
- Interventions
- Lenalidomide, Maintenance Vitamin D, No maintenance Vitamin D
- Drug
- Lead sponsor
- Amany Keruakous, MD, MS.
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2028
- U.S. locations
- 1
- States / cities
- Augusta, Georgia
- Conditions
- Chronic Kidney Disease, Secondary Hyperparathyroidism, Hemodialysis
- Interventions
- Paricalcitol, Cinacalcet
- Drug
- Lead sponsor
- Abbott
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 272 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 30
- States / cities
- Tempe, Arizona • Chula Vista, California • Los Angeles, California + 22 more
- Conditions
- Vitamin D Deficiency, Rotator Cuff Tears
- Interventions
- Vitamin D3 supplementation, Placebo
- Dietary Supplement · Other
- Lead sponsor
- Community Memorial Health System
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 240 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2021 – 2024
- U.S. locations
- 2
- States / cities
- Ventura, California
- Conditions
- Hypertension, Kidney Diseases
- Interventions
- Vitamin D3, Omega-3 Fatty acids, Vitamin D3 placebo, Fish oil placebo
- Dietary Supplement · Drug
- Lead sponsor
- Albert Einstein College of Medicine
- Other
- Eligibility
- 50 Years to 99 Years
- Enrollment
- 2,232 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2022
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Obesity
- Interventions
- Vitamin D3 (cholecalciferol)
- Dietary Supplement
- Lead sponsor
- Rockefeller University
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2009
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Pulmonary Disease, Chronic Obstructive, Osteoporosis
- Interventions
- Vital signs, Urine Pregnancy Test, Questionnaires, Blood Test, Duel-energy X-ray absorptiometry scan, Multi-detector computed tomography, Dual-energy X-ray absorptiometry scan
- Diagnostic Test · Other
- Lead sponsor
- Punam K Saha
- Other
- Eligibility
- 45 Years to 90 Years
- Enrollment
- 560 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2019 – 2025
- U.S. locations
- 2
- States / cities
- Iowa City, Iowa • New York, New York
- Conditions
- Chronic Kidney Disease, End Stage Kidney Disease, Chronic Kidney Disease Mineral and Bone Disorder, Renal Osteodystrophy, Secondary Hyperparathyroidism
- Interventions
- Kidney disease
- Other
- Lead sponsor
- Columbia University
- Other
- Eligibility
- 40 Years and older
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2016 – 2020
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Hematologic Malignancy
- Interventions
- Interval training, Psychiatric consult, Nutrition/diet evaluation, Referral to Social Worker
- Behavioral
- Lead sponsor
- Duke University
- Other
- Eligibility
- 18 Years to 80 Years
- Enrollment
- 29 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2024
- U.S. locations
- 1
- States / cities
- Durham, North Carolina
- Conditions
- Breast Cancer
- Interventions
- Cholecalciferol
- Drug
- Lead sponsor
- Katherine D. Crew
- Other
- Eligibility
- 21 Years and older · Female only
- Enrollment
- 20 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2013
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Clonal Cytopenia of Undetermined Significance, High Grade B-Cell Lymphoma With MYC and BCL2 or BCL6 Rearrangements, Recurrent Diffuse Large B-Cell Lymphoma, Recurrent Hodgkin Lymphoma, Recurrent Lymphoma, Refractory Diffuse Large B-Cell Lymphoma, Refractory Lymphoma, Chronic Myelomonocytic Leukemia
- Interventions
- Ascorbic Acid, Carboplatin, Cisplatin, Cytarabine, Dexamethasone, Etoposide, Gemcitabine Hydrochloride, Ifosfamide, Laboratory Biomarker Analysis, Oxaliplatin, Placebo Administration, Questionnaire Administration, Rituximab, Decitabine, Biospecimen Collection, Core Biopsy, Bone Marrow Aspiration, Bone Marrow Biopsy, Echocardiography, Positron Emission Tomography, Magnetic Resonance Imaging, Central Venous Cannula Insertion, Portacath Placement, Computed Tomography, Decitabine and Cedazuridine
- Dietary Supplement · Drug · Other + 2 more
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 80 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2033
- U.S. locations
- 4
- States / cities
- Mankato, Minnesota • Rochester, Minnesota • Eau Claire, Wisconsin + 1 more
- 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
- Mental Health, Vitamin D
- Interventions
- Placebo, Low dose Omega 3, High dose Omega 3
- Dietary Supplement
- Lead sponsor
- University of Colorado, Colorado Springs
- Other
- Eligibility
- 18 Years to 27 Years
- Enrollment
- 103 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2025
- U.S. locations
- 1
- States / cities
- Colorado Springs, Colorado
- 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
- Colorectal Adenocarcinoma
- Interventions
- Bevacizumab, Oxaliplatin, Leucovorin Calcium, Fluorouracil, Irinotecan Hydrochloride, Irinotecan, Cholecalciferol, Quality-of-Life Assessment, Questionnaire Administration
- Drug · Dietary Supplement · Other
- Lead sponsor
- Alliance for Clinical Trials in Oncology
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 455 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2026
- U.S. locations
- 1027
- States / cities
- Birmingham, Alabama • Anchorage, Alaska • Fairbanks, Alaska + 676 more
- Conditions
- Cardiovascular Disease
- Interventions
- Vitamin D3 + fish oil/fish oil placebo, Vitamin D3 placebo + fish oil/fish oil placebo
- Dietary Supplement
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 1,025 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2021
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Asthma
- Interventions
- Vitamin D 3 cholecalciferol, Vitamin D3
- Dietary Supplement
- Lead sponsor
- Brigham and Women's Hospital
- Other
- Eligibility
- 18 Years to 39 Years · Female only
- Enrollment
- 876 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2023
- U.S. locations
- 3
- States / cities
- San Diego, California • Boston, Massachusetts • St Louis, Missouri
- 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
- Cardiovascular Disease, Vitamin D Deficiency
- Interventions
- Vitamin D3, Placebo
- Dietary Supplement
- Lead sponsor
- Intermountain Health Care, Inc.
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 150 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2020
- U.S. locations
- 1
- States / cities
- Murray, Utah