- 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
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 553
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Hypovitaminosis D, Insulin Resistance, Diabetes
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Bastyr University
- Other
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 66 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2011
- U.S. locations
- 2
- States / cities
- Kailua-Kona, Hawaii • Kenmore, Washington
- Conditions
- Diabetes
- Interventions
- Vitamin D, Omega-3 fatty acids (fish oil), Vitamin D placebo, Fish oil placebo
- Dietary Supplement · Drug
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 1,312 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2019
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- End-Stage Kidney Disease
- Interventions
- Zemplar (paricalcitol injection), Calcijex
- Drug
- Lead sponsor
- Abbott
- Industry
- Eligibility
- 20 Years and older
- Enrollment
- 2,200 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- Started 2003
- U.S. locations
- 60
- States / cities
- Tuscaloosa, Alabama • Inglewood, California • Los Angeles, California + 40 more
- Conditions
- Unspecified Adult Solid Tumor, Protocol Specific
- Interventions
- calcitriol, dexamethasone, ketoconazole
- Dietary Supplement · Drug
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 15 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- Started 2004
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Stage I Prostate Cancer AJCC v8, Stage II Prostate Cancer AJCC v8, Stage III Prostate Cancer AJCC v8, Stage IVA Prostate Cancer AJCC v8
- Interventions
- Biospecimen Collection, D Vitamin, Dual X-ray Absorptiometry, Placebo Administration, Quality-of-Life Assessment, Questionnaire Administration
- Procedure · Dietary Supplement · Drug + 1 more
- Lead sponsor
- University of Rochester
- Other
- Eligibility
- 50 Years and older · Male only
- Enrollment
- 240 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2029
- U.S. locations
- 51
- States / cities
- Newark, Delaware • Danville, Illinois • Decatur, Illinois + 39 more
- Conditions
- Eye Health, Vision, Cognitive Function
- Interventions
- VisionPure Dietary Supplement, Placebo
- Dietary Supplement
- Lead sponsor
- Applied Science & Performance Institute
- Industry
- Eligibility
- 18 Years to 40 Years
- Enrollment
- 15 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2022 – 2023
- U.S. locations
- 3
- States / cities
- Lutz, Florida • Tampa, Florida
- Conditions
- Vitamin D Deficiency
- Interventions
- High dose Vitamin D3, Low dose Vitamin D3
- Dietary Supplement
- Lead sponsor
- Texas Tech University Health Sciences Center
- Other
- Eligibility
- 65 Years to 89 Years
- Enrollment
- 14 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 1
- States / cities
- Lubbock, Texas
- Conditions
- Bone Health, Nutrition Status
- Interventions
- Ca/Vit D, Placebo
- Dietary Supplement · Other
- Lead sponsor
- United States Army Research Institute of Environmental Medicine
- Federal
- Eligibility
- 17 Years to 42 Years
- Enrollment
- 342 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2012 – 2018
- U.S. locations
- 2
- States / cities
- Fort Sill, Oklahoma • San Antonio, Texas
- Conditions
- Neuropathic Pain
- Interventions
- Ergocalciferol Capsules, Cholecalciferol Capsules
- Drug · Dietary Supplement
- Lead sponsor
- Virginia Commonwealth University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 120 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2030
- U.S. locations
- 1
- States / cities
- Richmond, Virginia
- Conditions
- Chronic Obstructive Pulmonary Disease, Muscle Weakness
- Interventions
- Cholecalciferol, Laboratory Biomarker Analysis, Multivitamin, Placebo, Questionnaire Administration
- Dietary Supplement · Other
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 50 Years and older
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2017
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- Conditions
- Secondary Hyperparathyroidism Due to Renal Causes, Chronic Kidney Diseases, Vitamin D Deficiency, Stage 5 Chronic Kidney Disease
- Interventions
- Calcifediol Oral Capsule, Placebo oral capsule
- Drug
- Lead sponsor
- OPKO Health, Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 44 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2021
- U.S. locations
- 18
- States / cities
- Peoria, Arizona • Phoenix, Arizona • Cypress, California + 13 more
- Conditions
- Prostate Cancer
- Interventions
- Prostate Health Cocktail
- Drug
- Lead sponsor
- University of Southern California
- Other
- Eligibility
- 18 Years and older · Male only
- Enrollment
- 43 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2014
- U.S. locations
- 1
- States / cities
- Los Angeles, California
- 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
- Covid 19, Vitamin D Deficiency
- Interventions
- Vitamin D3
- Dietary Supplement
- Lead sponsor
- Arizona State University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 41 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020
- U.S. locations
- 1
- States / cities
- Tempe, Arizona
- Conditions
- Obesity and Overweight
- Interventions
- Postbiotic, Placebo
- Dietary Supplement
- Lead sponsor
- ResBiotic Nutrition, Inc.
- Industry
- Eligibility
- 18 Years to 65 Years
- Enrollment
- 80 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2025 – 2026
- U.S. locations
- 1
- States / cities
- Birmingham, Alabama
- Conditions
- Acute Myeloid Leukemia
- Interventions
- Deferasirox, Cholecalciferol, Azacitidine
- Drug
- Lead sponsor
- Elizabeth Henry
- Other
- Eligibility
- 65 Years to 89 Years
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2016
- U.S. locations
- 1
- States / cities
- Maywood, Illinois
- 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
- Vitamin D Deficiency
- Interventions
- Vitamin D3, placebo
- Drug
- Lead sponsor
- Winthrop University Hospital
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 27 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2013
- U.S. locations
- 1
- States / cities
- Mineola, New York
- 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
- Prostate Adenocarcinoma, Stage I Prostate Cancer, Stage IIA Prostate Cancer, Stage IIB Prostate Cancer
- Interventions
- Cholecalciferol, Genistein, Laboratory Biomarker Analysis, Pharmacological Study, Placebo
- Drug · Other
- Lead sponsor
- National Cancer Institute (NCI)
- NIH
- Eligibility
- 18 Years and older · Male only
- Enrollment
- 15 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2014
- U.S. locations
- 11
- States / cities
- Birmingham, Alabama • Baltimore, Maryland • Burlington, Massachusetts + 6 more
- Conditions
- Hypoparathyroidism
- Interventions
- Synthetic Human Parathyroid Hormone 1-34, Calcitriol & Calcium
- Drug
- Lead sponsor
- Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
- NIH
- Eligibility
- 17 Years to 69 Years
- Enrollment
- 27 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 1991 – 2014
- U.S. locations
- 1
- States / cities
- Bethesda, Maryland
- Conditions
- Psoriasis
- Interventions
- U0267, Vehicle
- Drug
- Lead sponsor
- Stiefel, a GSK Company
- Industry
- Eligibility
- 12 Years and older
- Enrollment
- 336 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008
- U.S. locations
- 13
- States / cities
- San Diego, California • Denver, Colorado • Miami, Florida + 9 more
- 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