Clinical trials: Vitamin D3
COVID-19, SARS-CoV 2
Hydroxychloroquine as Post-Exposure Prophylaxis Against COVID-19 Infection
This is a prospective, double-blind, randomized, placebo-controlled study in two distinct cohorts to evaluate the efficacy and safety of hydroxychloroquine in the prevention of COVID-19 infection.
- Trial name
- NCT04372017
- Testing
- Hydroxychloroquine, Vitamin D
- Where
- United States
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Sanford Health
Castration-resistant Prostate Cancer
Oral Calcitriol With Ketoconazole in CRPC
The aim of this study is to estimate the PSA response rate with the use of ketoconazole (400mg QD + hydrocortisone 20mg AM, 10 mg PM) among men with CRPC in whom disease has progressed despite abiraterone
- Trial name
- NCT03261336
- Testing
- Calcitriol, Ketoconazole, Hydrocortisone
- Where
- United States
- Volunteers
- 1 people
- Sponsor
- Donald Trump, MD
Colorectal Cancer, Polyps
Vitamin D/Calcium Polyp Prevention Study
Extensive experimental and observational data suggest that intake of calcium and of vitamin D exert protective effects on colorectal neoplasia.
- Conditions
- Colorectal Cancer, Polyps, Adenomas
- Trial name
- NCT00153816
- Testing
- Calcium Carbonate, Vitamin D3
- Where
- 11 sites in United States, Puerto Rico
- Volunteers
- 2,813 people
- Sponsor
- Dartmouth-Hitchcock Medical Center
Relapsing-Remitting Multiple Sclerosis
Supplementation of VigantOL® Oil Versus Placebo as Add-on in Patients With Relapsing Remitting Multiple Sclerosis Receiving Rebif® Treatment
The drug being tested is called VigantOL® oil - a very effective form of Vitamin D hormone supplement (cholecalciferol). Low levels of Vitamin D have been described to be associated with a higher risk of developing Multiple…
- Trial name
- SOLAR (NCT01285401)
- Testing
- VigantOL oil plus interferon beta-1a (Rebif), Interferon beta-1a (Rebif®) alone
- Where
- 38 sites in Austria, Denmark and 10 more
- Volunteers
- 260 people
- Sponsor
- Merck KGaA, Darmstadt, Germany
Hypovitaminosis D
Comparing a Novel Phototherapy Kiosk to Oral Vitamin D Supplementation
The purpose of this project is to demonstrate the capability of a standing phototherapy kiosk (SPK) to stimulate cutaneous vitamin D3 and subsequent production of 25 Hydroxyvitamin (OH) D safely and as efficiently as an oral…
- Trial name
- NCT04556136
- Testing
- Standing Phototherapy Kiosk, D3 Oral supplement
- Where
- United States
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
Diabetes Mellitus, Type 2
Thiazolidinedione Intervention With Vitamin D Evaluation
This study will answer two separate questions. The first question is to test the cardiovascular effects of long-term treatment with rosiglitazone or pioglitazone when used as part of standard of care compared to similar standard…
- Trial name
- TIDE (NCT00879970)
- Testing
- pioglitazone, rosiglitazone, Vitamin D
- Where
- 331 sites in United States, Argentina and 23 more
- Volunteers
- 1,332 people
- Sponsor
- GlaxoSmithKline
COPD, Asthma
LungVITamin D and OmegA-3 Trial (lungVITAL)
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is an ongoing randomized clinical trial in 25,871 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids…
- Conditions
- COPD, Asthma, Pulmonary Function, Pneumonia
- Trial name
- lungVITAL (NCT01728571)
- Testing
- Vitamin D3, fish oil
- Where
- United States
- Volunteers
- 25,871 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Stroke, Vitamin D
Effects of Vitamin D and Omega-3 on Cerebrovascular Disease
The VITamin D and OmegA-3 TriaL (VITAL; NCT 01169259) is a completed randomized clinical trial in 25,875 U.S. men and women which investigated whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty…
- Trial name
- NCT04070833
- Testing
- Vitamin D, Fish oil
- Volunteers
- 290 people
- Sponsor
- Brigham and Women's Hospital
Parathyroid Hormone
Study of Zemplar iv in Patients With End Stage Chronic Kidney Disease, Undergoing Haemodialysis
This is the post-marketing study conducted in two countries: Croatia and Serbia. In both countries Zemplar (paricalcitol) is the first injectable form of any Vitamin D Receptor (VDR) activator available for chronic kidney disease…
- Trial name
- NCT01084538
- Testing
- Zemplar iv (paricalcitol iv)
- Where
- 21 sites in Croatia, Serbia
- Volunteers
- 181 people
- Sponsor
- Abbott
Osteoporosis
Impact of Vitamin D Supplementation on Lactation Associated Bone Loss
Studies have shown that lactation is associated with a loss of bone density from four to seven percent at the spine and hip among women who lactate for six months. Decline in bone density with lactation occurs rapidly.
- Trial name
- NCT00903344
- Testing
- Vitamin D3, Multivitamin
- Where
- United States
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- Leigh Eck, MD
Mouth Neoplasms
Vitamin D Plus Celecoxib Therapy to Stimulate Intratumoral Immune Reactivity
The poor survival of Veterans with oral cancer underscores the significance of identifying new treatment approaches. The proposed studies will test a new 2 pronged immunotherapeutic approach for oral cancer patients which lessen…
- Trial name
- NCT00953849
- Testing
- Celecoxib, Calcitriol, Celecoxib plus Calcitriol
- Where
- United States
- Volunteers
- 21 people
- Sponsor
- VA Office of Research and Development
Muscle Pain, Joint Pain
Vitamin D3 Effects on Musculoskeletal Symptoms With Use of Aromatase Inhibitors
The Purpose of this study is to determine whether vitamin D3 supplements will decrease the muscle and bone pain that are reported by women who take Aromatase Inhibitors.
- Trial name
- NCT01509079
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 116 people
- Sponsor
- HealthPartners Institute
COVID-19
Randomized Proof-of-Concept Trial to Evaluate the Safety and Explore the Effectiveness of Resveratrol, a Plant Polyphenol, for COVID-19
Resveratrol is a plant polyphenol (that is sold commercially as a supplement) that might help fight coronavirus as well as help protect the body from the effects of disease (COVID-19) caused by the infection.
- Trial name
- NCT04400890
- Testing
- Resveratrol, Vitamin D3
- Where
- United States
- Volunteers
- 105 people
- Sponsor
- Marvin McCreary, MD
Breast Cancer
High Dose Vitamin D vs Standard Dose Vitamin D Study
This study is being done to look at the difference, if there is a difference between two different doses of Vitamin D and the reduction of joint/muscle pain (arthralgia)that is caused by taking anti-estrogen medications…
- Trial name
- NCT01988090
- Testing
- 800 IU Vitamin D Supplement, 50,000 IU Vitamin D supplement
- Where
- 2 sites in United States
- Volunteers
- 93 people
- Sponsor
- Mothaffar Rimawi
Neurotoxicity
Study to Assess Prevention of Oxaliplatin-induced Neurotoxicity Through Vitamin D Pathway
Many patients with cancer that are treated with a drug called oxaliplatin. This drug is used with other drugs to treat cancer. The drug can cause problems with the nerves in the hands and feet called peripheral neuropathy (a side…
- Trial name
- NCT01499940
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 9 people
- Sponsor
- Gerald Higa, PharmD.
Type 2 Diabetes
Comparison of Efficacy of Vitamin D and Vitamin D-calcium Fortified Yogurt Drink in Diabetic Patients
The aim of this study is to evaluate the possible effects of daily intake of yogurt drink fortified with vitamin D alone or with vitamin D + calcium on some selected glycemic, metabolic, inflammatory and oxidative stress markers…
- Trial name
- NCT01229891
- Testing
- plain yogurt drink, vitamin D fortified yogurt drink, vitamin D-calcium yogurt drink
- Volunteers
- 90 people
- Sponsor
- National Nutrition and Food Technology Institute
Post Menopausal Osteoporosis
A Study of Bone Turnover Markers in Post-Menopausal Women With Osteoporosis Treated With Monthly Boniva (Ibandronate)
This study will determine the rapidity of suppression of the bone resorption marker sCTX in post-menopausal women with osteoporosis.Other bone turnover markers will also be evaluated.
- Trial name
- NCT00303485
- Testing
- Vitamin D and calcium supplementation, ibandronate [Bonviva/Boniva]
- Where
- 10 sites in United States, Puerto Rico
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Hoffmann-La Roche
Metastatic Colorectal Cancer
Study of Vitamin D in Untreated Metastatic Colorectal Cancer
This is a prospective, randomized, double-blind phase II trial to evaluate the efficacy and safety of two doses of vitamin D supplementation in combination with standard chemotherapy in participants with previously-untreated…
- Trial name
- NCT01516216
- Testing
- FOLFOX + bevacizumab, Vitamin D
- Where
- 18 sites in United States
- Volunteers
- 139 people
- Sponsor
- Dana-Farber Cancer Institute
Osteoporosis
Secondary Prevention of Osteoporosis
The purpose of this study is to develop and implement an evidence based protocol for the secondary prevention of osteoporotic fractures and falls, and to determine how compliance with this intervention improves muscle strength…
- Trial name
- NCT00421343
- Testing
- alendronate with cholecalciferol, calcium carbonate with cholecalciferol, Falls prevention measures
- Where
- United States
- Volunteers
- 29 people
- Sponsor
- Hebrew SeniorLife
Systemic Lupus Erythematosus, SLE
Vitamin D3 in Systemic Lupus Erythematosus
The purpose of this study is to explore the impact of vitamin D3 on the expression of alpha interferon (IFN alpha) expression in systemic lupus erythematosus (SLE) patients with vitamin D deficiency.
- Conditions
- Systemic Lupus Erythematosus, SLE, Lupus
- Trial name
- NCT00710021
- Testing
- Vitamin D3
- Where
- 8 sites in United States
- Volunteers
- 57 people
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)