Clinical trials: Cholecalciferol
Vitamin D Deficiency
Vitamin D3 Supplementation for AlloHSCT-RCT
This study is to assess whether a single oral loading dose of 100,000 IU vitamin D3 prior to allogeneic hematopoietic stem cell transplant (aHSCT) can achieve optimal 25 hydroxy-vitamin D3(25-OH-D3) levels (>75nmol/L) at one…
- Trial name
- NCT03534674
- Testing
- vitamin D3
- Where
- Canada
- Volunteers
- 84 people
- Sponsor
- University of British Columbia
Crohn Disease
The Impact of Vitamin D on Disease Activity in Crohn's Disease
The purpose for this study is to determine the effect of vitamin D supplementation on disease activity in Crohn's disease patients in Canada and Saudi Arabia
- Trial name
- NCT01864616
- Testing
- Vitamin D3
- Where
- 2 sites in Canada, Saudi Arabia
- Volunteers
- 9 people
- Sponsor
- University of Saskatchewan
Chronic Sinusitis
Vitamin D Supplementation in Chronic Rhinosinusitis With Nasal Polyps
The purpose of this study is to determine if Vitamin D supplementation improves clinical and immunologic parameters in chronic rhinosinusitis with nasal polyps.
- Trial name
- VDinCRS (NCT01185808)
- Testing
- Vitamin D
- Where
- United States
- Sponsor
- Medical University of South Carolina
Hypovitaminosis D
Changes in Serum Vitamin D Level After Different Loading Doses of Cholecalciferol
it is a clinical trial to observe increase in serum vitamin D level and clinical symptoms after 3 different doses of cholecalciferol given either intramuscularly or oral.
- Trial name
- NCT03504280
- Testing
- Cholecalciferol
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Cystic Fibrosis, Allergic Bronchopulmonary Aspergillosis
Open-label Vitamin D Trial for Patients With Cystic Fibrosis and Allergic Bronchopulmonary Aspergillosis
The purpose of this study is to see if giving people with CF and ABPA enough vitamin D to make their blood levels of the vitamin higher, will reduce the allergic response in their body and make the symptoms caused by ABPA better.
- Trial name
- NCT01222273
- Testing
- cholecalciferol (Vitamin D3)
- Where
- 2 sites in United States
- Volunteers
- 7 people
- Sponsor
- University of Pittsburgh
Respiratory Infection
Human Lung Responses to Respiratory Pathogens
For most individuals, the lung has a remarkable ability to deal with exposure to a variety of inhaled bacteria. Some individuals, however, do have recurrent bacterial infections, usually in the form of acute or chronic bronchitis…
- Trial name
- NCT01967628
- Testing
- Vitamin D3 (cholecalciferol)
- Where
- United States
- Volunteers
- 98 people, healthy volunteers welcome
- Sponsor
- University of Iowa
Deficiency, Vitamin D, Insulin Resistance
Vitamin D Supplementation and and Glycemic Indexes
Age affect insulin sensitivity and the metabolism, and vitamin D status was shown to have a correlation with markers of insulin resistance.
- Trial name
- NCT03478475
- Testing
- cholecalciferol (Euro-Pharm International, Canada)
- Volunteers
- 115 people, healthy volunteers welcome
- Sponsor
- Université d'Auvergne
Inflammatory Bowel Diseases, Vitamin D Deficiency
Vitamin D Repletion and Maintenance in IBD: How Much and How Often
Inflammatory bowel disease (IBD), which includes ulcerative colitis (UC) and Crohn's disease (CD), are chronic relapsing inflammatory conditions of the gastrointestinal tract.
- Trial name
- NCT03053414
- Testing
- Vitamin D (ergocalciferol and/ or cholecalciferol)
- Where
- United States
- Sponsor
- Cedars-Sinai Medical Center
Vitamin D Deficiency
The Efficacy of Different Vitamin D Supplementation Delivery Methods
To test the efficacy of different vitamin D delivery methods on serum 25(OH)D. Participants randomly assigned to one of seven groups - three placebo groups and 4 active supplement groups receiving 100,000IU vitamin D3
- Trial name
- NCT03463642
- Testing
- vitamin D3, Pill, orange syrup
- Where
- United Kingdom
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- University of Wolverhampton
Vitamin D Deficiency
Effects of Antarctic Environment on Vitamin D Status and Health Risk Biomarkers of Its Inhabitants
The purpose of this study is to evaluate vitamin D (VD) deficiency in the population of Chilean Antarctica and evaluate the efficacy and safety of VD supplementation to decrease VD deficiency and favorably influence biomarkers…
- Trial name
- AntarD (NCT02930434)
- Testing
- cholecalciferol
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Pontificia Universidad Catolica de Chile
Vitamin D Deficiency, Hypertension
Vitamin D Deficiency in Patients With Hypertension
This study will evaluate the effects of Vitamin D replacement and the effects of an approved medication for hypertension, aliskiren (Tekturna), in patients with high blood pressure who have low levels of vitamin D in their blood.
- Trial name
- NCT00974922
- Testing
- Aliskiren, Cholecalciferol
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- UConn Health
Urinary Incontinence, Vitamin D Deficiency
Vitamin D Supplementation in Older Adults With Urinary Incontinence
Urinary incontinence (UI) is a common disorder among older women that greatly affects quality of life. Emerging evidence from observational studies links vitamin D insufficiency with UI.
- Trial name
- NCT01971801
- Testing
- Vitamin D3 50,000 IU
- Where
- United States
- Volunteers
- 243 people
- Sponsor
- University of Alabama at Birmingham
Type 2 Diabetes Mellitus
Does Vitamin D Reduce Risk of Developing Type II DM in High Risk Individuals
Both vitamin D deficiency and type II DM/prediabetes are highly prevalent. Vitamin D status has been negatively associated with the presence of type II DM and glycemic control.
- Trial name
- NCT01170468
- Testing
- Vitamin D3
- Where
- Saudi Arabia
- Volunteers
- 25 people
- Sponsor
- King Faisal Specialist Hospital & Research Center
Vitamin D Deficiency
Magnitude of Changes in 25 OH Vitamin D3 Levels After Vitamin D3 Supplementation
Vitamin D deficiency is common world wide. 25 OH vitamin D level is the best indicator of vitamin D status. The determination of the appropriate dose of vitamin D supplement is essential for management of vitamin D deficiency as…
- Trial name
- NCT01170507
- Testing
- vitamin D3 1000 IU orally daily for 5 months, vitamin D3 3000 IU orally daily for 5 months, vitamin D3 5000 IU orally daily for 5 months
- Where
- Saudi Arabia
- Volunteers
- healthy volunteers welcome
- Sponsor
- King Faisal Specialist Hospital & Research Center
Diabetes Mellitus, Vitamin D Deficiency
The Effects of Vitamin D Supplementation on Patients With Type 2 Diabetes and Vitamin D Deficiency
Vitamin D plays a key role in keeping normal mineral balance and maintaining bone health. There is accumulating evidence linking deficient vitamin D status with both type 1 and type 2 diabetes.
- Trial name
- VDD (NCT01991054)
- Testing
- vitamin D3
- Where
- Israel
- Volunteers
- 45 people
- Sponsor
- HaEmek Medical Center, Israel
Osteoporosis
HDDO-1614 Bio Equivalence Study
A randomized, open-label, single-dose, crossover study
- Trial name
- NCT03382314
- Testing
- HDDO-1614, Bazedoxifene / Cholecalciferol
- Where
- South Korea
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- Hyundai Pharmaceutical Co., LTD.
Cancer of the Prostate, Prostate Cancer
Study of Antioxidants on MRI Detectable Early Stage Prostate Cancer Among Men on Active Surveillance
The purpose of this study is to determine whether antioxidants (vitamin E, selenium and lycopene)can change(reduce)prostate tumor size or blood flow to the prostate as determined by MRI imaging among men on Active Surveillance.
- Conditions
- Cancer of the Prostate, Prostate Cancer, Prostatic Neoplasms
- Trial name
- NCT00744549
- Testing
- Lycopene, Vitamin D3, Selenium, Green Tea Extract, Vitamin E
- Where
- Canada
- Volunteers
- 16 people
- Sponsor
- University Health Network, Toronto
Breast Cancer
Vitamin D3 for Aromatase Inhibitor Induced Arthralgias
The primary purpose is to determine if high dose vitamin D3 reduces the incidence of musculoskeletal symptoms associated with the aromatase inhibitor letrozole in women with early stage breast cancer and low serum vitamin D…
- Trial name
- VITAL (NCT00867217)
- Testing
- High Dose Vitamin D, Standard Dose Vitamin D3, Letrozole 2.5mg
- Where
- 2 sites in United States
- Volunteers
- 160 people
- Sponsor
- Qamar Khan
Crohn's Disease, Vitamin D Deficiency
Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease
IBD is caused by an abnormal immune response to the gut bacteria in people who are genetically predisposed. There has been a huge increase in the number of people diagnosed with IBD since World War II, likely due to changes in…
- Trial name
- NCT01046773
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 3 people
- Sponsor
- University of California, Los Angeles
Melanoma
MelaViD: A Trial on Vitamin D Supplementation for Resected Stage II Melanoma Patients
The purpose of this trial is to assess the effect of vitamin D supplementation on recurrence in resected stage II melanoma patients.
- Trial name
- MelaViD (NCT01264874)
- Testing
- Vitamin D3 ( Colecalciferol)
- Where
- Italy
- Volunteers
- 150 people
- Sponsor
- European Institute of Oncology