- Conditions
- Alzheimer Disease
- Interventions
- Ketogenic Diet, Therapeutic Lifestyles Changes Diet
- Behavioral
- Lead sponsor
- University of Kansas Medical Center
- Other
- Eligibility
- 50 Years to 90 Years
- Enrollment
- 84 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2025
- U.S. locations
- 1
- States / cities
- Fairway, Kansas
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.
All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.
Showing 1–24
of 534
matching trials from the live ClinicalTrials.gov search.
- 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
- Arthritis, Rheumatoid, Vitamin D Deficiency
- Interventions
- Placebo in arm A and Vitamin D in arm B, vitamin D 3 for arm A ,and matching placebo for arm B
- Drug
- Lead sponsor
- Indiana University
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2009 – 2011
- U.S. locations
- 1
- States / cities
- Indianapolis, Indiana
- Conditions
- Osteopenia, Osteoporosis
- Interventions
- Micronized Calcium Carbonate, Non-Micronized Calcium Carbonate, Vitamin D3
- Dietary Supplement
- Lead sponsor
- Integrative Health Technologies, Inc.
- Network
- Eligibility
- 21 Years and older
- Enrollment
- 160 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2013 – 2014
- U.S. locations
- 1
- States / cities
- San Antonio, Texas
- Conditions
- Vitamin D Deficiency
- Interventions
- 400 IU Vitamin D3 (cholecalciferol), 2400 IU Vitamin D3 (cholecalciferol), 6400 IU Vitamin D3 (cholecalciferol)
- Drug
- Lead sponsor
- Medical University of South Carolina
- Other
- Eligibility
- 18 Years to 45 Years · Female only
- Enrollment
- 460 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2006 – 2012
- U.S. locations
- 2
- States / cities
- Rochester, New York • Charleston, South Carolina
- Conditions
- Vitamin D Metabolism is in Chronic Kidney Disease
- Interventions
- 10,000 IU of cholecalciferol for a total of 8 weeks
- Drug
- Lead sponsor
- Memphis VA Medical Center
- Federal
- Eligibility
- 18 Years to 85 Years · Male only
- Enrollment
- 70 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2012
- U.S. locations
- 1
- States / cities
- Memphis, Tennessee
- Conditions
- Psoriasis
- Interventions
- Topical Therapy, Phototherapy and Systemic Therapy, Biologic Therapy
- Other
- Lead sponsor
- University of California, Irvine
- Other
- Eligibility
- 18 Years and older
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2013 – 2015
- U.S. locations
- 1
- States / cities
- Irvine, California
- Conditions
- Basal Cell Carcinoma, Basal Cell Nevus Syndrome
- Interventions
- Dietary Vitamin D3 pre-treatment, Photodynamic therapy, Serum Maintenance Vitamin D3
- Drug · Radiation
- Lead sponsor
- Case Comprehensive Cancer Center
- Other
- Eligibility
- Not listed
- Enrollment
- 37 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2023
- U.S. locations
- 2
- States / cities
- Phoenix, Arizona • Cleveland, Ohio
- Conditions
- Ectonucleotide Pyrophosphatase/Phosphodiesterase1 Deficiency, Autosomal Recessive Hypophosphatemic Rickets, Generalized Arterial Calcification of Infancy
- Interventions
- INZ-701, Control Arm (Conventional Therapy)
- Drug
- Lead sponsor
- Inozyme Pharma
- Industry
- Eligibility
- 1 Year to 12 Years
- Enrollment
- 27 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2026
- U.S. locations
- 3
- States / cities
- Chicago, Illinois • Philadelphia, Pennsylvania • Fort Worth, Texas
- Conditions
- Psoriasis Vulgaris
- Interventions
- Calcitriol
- Drug
- Lead sponsor
- Galderma R&D
- Industry
- Eligibility
- 2 Years to 16 Years
- Enrollment
- 54 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2018
- U.S. locations
- 8
- States / cities
- Fort Smith, Arkansas • Rogers, Arkansas • Burbank, California + 5 more
- 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
- Contiguous Stage II Small Lymphocytic Lymphoma, Noncontiguous Stage II Small Lymphocytic Lymphoma, Stage 0 Chronic Lymphocytic Leukemia, Stage I Chronic Lymphocytic Leukemia, Stage I Small Lymphocytic Lymphoma, Stage II Chronic Lymphocytic Leukemia
- Interventions
- curcumin, cholecalciferol, laboratory biomarker analysis, pharmacological study
- Drug · Dietary Supplement · Other
- Lead sponsor
- Paolo Caimi, MD
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 35 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2018
- U.S. locations
- 1
- States / cities
- Cleveland, Ohio
- Conditions
- COVID-19, Coronavirus Infection, Sars-CoV2, Corona Virus Infection, COVID, Coronavirus, Coronavirus-19, Coronavirus 19
- Interventions
- Hydroxychloroquine, Vitamin C, Vitamin D, Zinc
- Drug · Dietary Supplement
- Lead sponsor
- ProgenaBiome
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 254 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2020 – 2024
- U.S. locations
- 1
- States / cities
- Ventura, California
- Conditions
- End Stage Renal Disease
- Interventions
- ergocalciferol supplementation, placebo
- Dietary Supplement · Other
- Lead sponsor
- Dialysis Clinic, Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 470 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2015
- U.S. locations
- 12
- States / cities
- Redding, California • Albany, Georgia • Shreveport, Louisiana + 9 more
- Conditions
- Hypovitaminosis D
- Interventions
- Vitamin D3, Calcium, and Vitamin C
- Dietary Supplement
- Lead sponsor
- Atlantic Health System
- Other
- Eligibility
- 6 Years to 21 Years
- Enrollment
- 200 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2027 – 2032
- U.S. locations
- 1
- States / cities
- Morristown, New Jersey
- 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
- Bone Alteration, Dietary Modification
- Interventions
- Calcium/Vitamin D, Placebo
- Dietary Supplement
- Lead sponsor
- United States Army Research Institute of Environmental Medicine
- Federal
- Eligibility
- 17 Years to 42 Years
- Enrollment
- 175 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2015
- U.S. locations
- 1
- States / cities
- Columbia, South Carolina
- Conditions
- Asthma, Vitamin D Deficiency
- Interventions
- Vitamin D2 + vitamin D3, Vitamin D3
- Drug
- Lead sponsor
- Nationwide Children's Hospital
- Other
- Eligibility
- 8 Years to 17 Years
- Enrollment
- 18 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2014 – 2016
- U.S. locations
- 1
- States / cities
- Columbus, Ohio
- Conditions
- Vitamin D Deficiency
- Interventions
- Placebo, 800 IU/day vitamin D supplementation with feedings in the first 28 days after birth, Usual Care
- Dietary Supplement · Other
- Lead sponsor
- The University of Texas Health Science Center, Houston
- Other
- Eligibility
- 24 Hours to 96 Hours
- Enrollment
- 180 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2027
- U.S. locations
- 1
- States / cities
- Houston, Texas
- Conditions
- Femoral Fracture, Fragility Fracture, Muscle Atrophy
- Interventions
- Essential Amino Acid Supplementation
- Combination Product
- Lead sponsor
- Michael C Willey
- Other
- Eligibility
- 65 Years and older
- Enrollment
- 60 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2026
- U.S. locations
- 2
- States / cities
- Iowa City, Iowa • Eugene, Oregon
- Conditions
- Vitamin D Deficiency
- Interventions
- Dose 1, Dose 2
- Drug
- Lead sponsor
- University of Minnesota
- Other
- Eligibility
- 18 Years to 85 Years
- Enrollment
- 10 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2016 – 2017
- U.S. locations
- 1
- States / cities
- Saint Paul, Minnesota
- Conditions
- Health, Subjective
- Interventions
- Experimental supplement, Placebo
- Dietary Supplement
- Lead sponsor
- Auburn University
- Other
- Eligibility
- 21 Years to 40 Years · Female only
- Enrollment
- 94 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2018 – 2019
- U.S. locations
- 1
- States / cities
- Auburn, Alabama
- 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
- Conditions
- Determine Effect of Vitamin D on Bone Health in Elderly African American Women
- Interventions
- Vitamin D 3, placebo
- Dietary Supplement · Other
- Lead sponsor
- Winthrop University Hospital
- Other
- Eligibility
- 60 Years and older · Female only
- Enrollment
- 260 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2010 – 2016
- U.S. locations
- 1
- States / cities
- Mineola, New York