- 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
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 457–480
of 530
matching trials from the live ClinicalTrials.gov search.
- 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
- Obesity, Vitamin D Deficiency
- Interventions
- Ergocalciferols
- Drug
- Lead sponsor
- Walter Reed National Military Medical Center
- Federal
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 44 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2011 – 2017
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Colorectal Cancer
- Interventions
- calcium carbonate, cholecalciferol, immunohistochemistry staining method, laboratory biomarker analysis, pharmacological study, biopsy
- Dietary Supplement · Other · Procedure
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years to 120 Years
- Enrollment
- 8 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2009
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Male Osteoporosis
- Interventions
- Teriparatide or human parathyroid hormone (PTH) 1-34, Cinacalcet, placebo tablet, Calcium citrate tablet, Vitamin D3
- Drug · Dietary Supplement
- Lead sponsor
- VA Office of Research and Development
- Federal
- Eligibility
- 60 Years to 85 Years · Male only
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2025
- U.S. locations
- 1
- States / cities
- San Francisco, California
- Conditions
- Morbid Obesity, Vitamin D Deficiency
- Interventions
- vitamin D3 (Replesta), vitamin D
- Dietary Supplement
- Lead sponsor
- Texas Tech University
- Other
- Eligibility
- 18 Years to 60 Years
- Enrollment
- 31 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Lubbock, Texas
- Conditions
- Chronic Plaque Psoriasis
- Interventions
- Calcitriol 3mcg/g
- Drug
- Lead sponsor
- Galderma R&D
- Industry
- Eligibility
- 12 Years to 17 Years
- Enrollment
- 25 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2006 – 2009
- U.S. locations
- 5
- States / cities
- Little Rock, Arkansas • San Diego, California • Eagan, Minnesota + 2 more
- Conditions
- Hypercholesteremia
- Interventions
- phytosterol
- Drug
- Lead sponsor
- The Cooper Institute
- Other
- Eligibility
- 20 Years to 70 Years
- Enrollment
- 72 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2004 – 2005
- U.S. locations
- 1
- States / cities
- Dallas, Texas
- Conditions
- Breast Cancer
- Interventions
- High Dose Vitamin D, Placebo, Standard Dose Vitamin D3, Letrozole 2.5mg
- Dietary Supplement · Drug
- Lead sponsor
- Qamar Khan
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 160 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 2
- States / cities
- Westwood, Kansas • Wichita, Kansas
- Conditions
- Thyroid Nodules, Hypocalcemia
- Interventions
- Calcitriol, Control Pill
- Dietary Supplement
- Lead sponsor
- David Shonka, MD
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 67 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2021
- U.S. locations
- 1
- States / cities
- Charlottesville, Virginia
- Conditions
- Premature Infants
- Interventions
- cholecalciferal, cholecalciferol
- Dietary Supplement
- Lead sponsor
- University of Nebraska
- Other
- Eligibility
- 23 Weeks to 32 Weeks
- Enrollment
- 32 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2013
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Vitamin D Deficiency
- Interventions
- Ergocalciferol, Calcitriol
- Dietary Supplement
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 45 Years
- Enrollment
- 42 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- 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
- Colorectal Cancer
- Interventions
- cholecalciferol, polymerase chain reaction, polymorphism analysis, protein expression analysis, reverse transcriptase-polymerase chain reaction, western blotting, high performance liquid chromatography, laboratory biomarker analysis, pharmacological study, adjuvant therapy, immunoscintigraphy
- Dietary Supplement · Genetic · Other + 1 more
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years to 120 Years
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2010
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- 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
- Diabetes Mellitus, Chronic Kidney Disease, Diabetic Kidney Disease
- Interventions
- Cholecalciferol, Placebo
- Dietary Supplement
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 22 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2007 – 2010
- U.S. locations
- 1
- States / cities
- Seattle, Washington
- Conditions
- Breast Cancer
- Interventions
- Vitamin D
- Drug
- Lead sponsor
- Melinda Telli
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 41 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 1
- States / cities
- Stanford, California
- Conditions
- Vitamin D Deficiency
- Interventions
- Vitamin D3
- Drug
- Lead sponsor
- Montefiore Medical Center
- Other
- Eligibility
- 13 Years to 20 Years
- Enrollment
- 183 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2014
- U.S. locations
- 1
- States / cities
- The Bronx, New York
- Conditions
- Brain and Central Nervous System Tumors, Unspecified Adult Solid Tumor, Protocol Specific
- Interventions
- calcitriol, carboplatin
- Dietary Supplement · Drug
- Lead sponsor
- University of Pittsburgh
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 1996 – 2004
- U.S. locations
- 1
- States / cities
- Pittsburgh, Pennsylvania
- Conditions
- Vitamin D Deficiency, Rickets, Infant Nutrition Disorders
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 1 Month to 50 Years
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2011
- U.S. locations
- 1
- States / cities
- Rochester, Minnesota
- 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
- Vitamin D Deficiency, Fat Malabsorption
- Interventions
- Calcifediol, Calciferol
- Drug
- Lead sponsor
- Boston University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 16 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Chronic Kidney Disease, Kidney Transplantation
- Interventions
- Doxercalciferol, placebo, 25-OH Vitamin D3
- Drug
- Lead sponsor
- Mariana Markell
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 39 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2010
- U.S. locations
- 1
- States / cities
- Brooklyn, New York
- 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