- Conditions
- ADHD
- Interventions
- Magnetic Resonance Imaging (MRI), PHNO, calcitriol, Placebo oral capsule, high-resolution research tomography, Dextro Amphetamine
- Procedure · Drug · Dietary Supplement
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 24 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2017 – 2023
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
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 73–96
of 121
matching trials from the live ClinicalTrials.gov search.
- Conditions
- Vitamin D Deficiency, Stem Cell Transplant Complications, Pediatric Cancer, Blood Disorder, Pediatric Acute Myeloid Leukemia, Pediatric Acute Lymphoid Leukemia, Myelodysplastic Syndromes, Sickle Cell Anemia in Children, Aplastic Anemia, Thalassemia in Children
- Interventions
- Vitamin D3, Standard Vitamin D3 Supplementation
- Dietary Supplement
- Lead sponsor
- Phoenix Children's Hospital
- Other
- Eligibility
- 1 Year to 25 Years
- Enrollment
- 49 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2019
- U.S. locations
- 1
- States / cities
- Phoenix, Arizona
- Conditions
- Cluster Headache
- Interventions
- Vitamin D, multivitamin, Placebo
- Dietary Supplement
- Lead sponsor
- The University of Texas Health Science Center, Houston
- Other
- Eligibility
- 18 Years to 70 Years
- Enrollment
- 27 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2024
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Nutrition, Healthy
- Interventions
- Experimental Oil with Phospholipids, Control Polyunsaturated Oil Blend
- Other
- Lead sponsor
- Abbott Nutrition
- Industry
- Eligibility
- 18 Years to 55 Years
- Enrollment
- 26 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024
- U.S. locations
- 1
- States / cities
- North Canton, Ohio
- Conditions
- HIV-1 Infection
- Interventions
- EFV/FTC/TDF, Calcium Carbonate, Vitamin D3, Placebo for calcium carbonate, Placebo for vitamin D3
- Drug
- Lead sponsor
- Advancing Clinical Therapeutics Globally for HIV/AIDS and Other Infections
- Network
- Eligibility
- 18 Years and older
- Enrollment
- 167 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2013
- U.S. locations
- 38
- States / cities
- Birmingham, Alabama • Los Angeles, California • Palo Alto, California + 27 more
- Conditions
- Cystic Fibrosis, Dysbiosis
- Interventions
- Vitamin D3, Placebo vitamin D3, Inulin, Placebo Inulin
- Drug
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 40 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2022
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Vitamin D Deficiency
- Interventions
- cholecalciferol (vitamin D)
- Dietary Supplement
- Lead sponsor
- University of Miami
- Other
- Eligibility
- 65 Years to 95 Years
- Enrollment
- 105 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2008 – 2009
- U.S. locations
- 1
- States / cities
- Miami, Florida
- Conditions
- Breast Neoplasms
- Interventions
- Vitamin D, Calcium carbonate, Vitamin D, Placebo
- Dietary Supplement · Drug · Other
- Lead sponsor
- Washington University School of Medicine
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 63 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2005 – 2009
- U.S. locations
- 1
- States / cities
- St Louis, Missouri
- Conditions
- HIV/AIDS, Vitamin D Deficiency, Smoker Lung
- Interventions
- Vitamin D3 450,000 IU orally
- Drug
- Lead sponsor
- Emory University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 7 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018
- U.S. locations
- 2
- States / cities
- Atlanta, Georgia
- Conditions
- Rheumatoid Arthritis, Crohn's Disease
- Interventions
- calcitriol
- Drug
- Lead sponsor
- Atlanta VA Medical Center
- Federal
- Eligibility
- 18 Years to 50 Years · Male only
- Enrollment
- 9 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2007 – 2009
- U.S. locations
- 1
- States / cities
- Atlanta, Georgia
- Conditions
- Breast Cancer
- Interventions
- 800 IU Vitamin D Supplement, 50,000 IU Vitamin D supplement
- Drug
- Lead sponsor
- Mothaffar Rimawi
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 93 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2018
- U.S. locations
- 2
- States / cities
- St Louis, Missouri • Houston, Texas
- 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
- Opioid Use Disorder
- Interventions
- [11C]-PHNO, Calcitriol, Placebo Control, PET Scan
- Drug · Dietary Supplement · Other + 1 more
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years to 50 Years
- Enrollment
- 5 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2024 – 2025
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Metastatic Colorectal Cancer
- Interventions
- FOLFOX + bevacizumab, Vitamin D
- Drug · Dietary Supplement
- Lead sponsor
- Dana-Farber Cancer Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 139 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2012 – 2019
- U.S. locations
- 18
- States / cities
- Boise, Idaho • Fruitland, Idaho • Meridian, Idaho + 13 more
- Conditions
- Vitamin D Deficiency
- Interventions
- Treatment
- Drug
- Lead sponsor
- Johns Hopkins All Children's Hospital
- Other
- Eligibility
- 36 Months to 18 Years
- Enrollment
- 26 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2019
- U.S. locations
- 1
- States / cities
- St. Petersburg, Florida
- Conditions
- Breast, Breast Cancer, Osteoporosis
- Interventions
- High Dose Vitamin D, Standard of Care Vitamin D
- Dietary Supplement
- Lead sponsor
- Wake Forest University Health Sciences
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Enrollment
- 7 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2024
- U.S. locations
- 1
- States / cities
- Charlotte, North Carolina
- Conditions
- Adult Acute Megakaryoblastic Leukemia (M7), Adult Acute Monoblastic Leukemia (M5a), Adult Acute Monocytic Leukemia (M5b), Adult Acute Myeloblastic Leukemia With Maturation (M2), Adult Acute Myeloblastic Leukemia Without Maturation (M1), Adult Acute Myeloid Leukemia With 11q23 (MLL) Abnormalities, Adult Acute Myeloid Leukemia With Del(5q), Adult Acute Myeloid Leukemia With Inv(16)(p13;q22), Adult Acute Myeloid Leukemia With t(16;16)(p13;q22), Adult Acute Myeloid Leukemia With t(8;21)(q22;q22), Adult Acute Myelomonocytic Leukemia (M4), Adult Erythroleukemia (M6a), Adult Pure Erythroid Leukemia (M6b), Untreated Adult Acute Myeloid Leukemia
- Interventions
- cholecalciferol, pharmacological study, laboratory biomarker analysis
- Dietary Supplement · Other
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 1
- States / cities
- Buffalo, New York
- 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
- Conditions
- Healthy Volunteers
- Interventions
- Single High Dose Cholecalciferol, Daily Dose Cholecalciferol
- Dietary Supplement
- Lead sponsor
- Mayo Clinic
- Other
- Eligibility
- 18 Years to 40 Years · Female only
- Enrollment
- 40 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010
- U.S. locations
- 1
- States / cities
- Rochester, Minnesota
- Conditions
- Diabetes Mellitus, Type 1, Hypoglycemia, Diabetes Mellitus, Diabetes, Autoimmune
- Interventions
- Cholecalciferol, Omega 3 fatty acid
- Drug
- Lead sponsor
- Rodolfo Alejandro
- Other
- Eligibility
- 6 Years to 65 Years
- Enrollment
- 27 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2024
- U.S. locations
- 1
- States / cities
- Miami, Florida
- Conditions
- End Stage Renal Disease
- Interventions
- Ergocalciferol, Placebo
- Drug · Other
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 105 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2014
- U.S. locations
- 3
- States / cities
- Boston, Massachusetts
- Conditions
- Chronic Lymphocytic Leukemia, Non-Hodgkin Lymphoma, Untreated Chronic Lymphocytic Leukemia, Vitamin D Deficiency
- Interventions
- Cholecalciferol, Laboratory Biomarker Analysis
- Dietary Supplement · Other
- Lead sponsor
- University of Nebraska
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 197 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2015 – 2025
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska
- Conditions
- Short Segment Barrett's Esophagus, Long Segment Barrett's Esophagus
- Interventions
- Omeprazole, Vitamin D3, upper endoscopy, Metformin
- Drug · Procedure
- Lead sponsor
- Case Comprehensive Cancer Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 26 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2010 – 2016
- U.S. locations
- 3
- States / cities
- Beachwood, Ohio • Cleveland, Ohio
- Conditions
- Kidney Transplantation, Vitamin D Deficiency
- Interventions
- Standard vitamin D3 treatment, High dose vitamin D3 treatment
- Dietary Supplement
- Lead sponsor
- University of Nebraska
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 116 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2008 – 2023
- U.S. locations
- 1
- States / cities
- Omaha, Nebraska