Clinical trials: Deficiency, Vitamin D
Vitamin D Insufficiency, Vitamin D Deficiency
Vitamin D Levels and Vitamin D Education in Geriatric Patients
Vitamin D is important to maintain good health. Although it is found in foods and vitamins, many people still have low vitamin D levels.
- Trial name
- NCT00273611
- Testing
- Pharmacist Education about Vitamin D
- Where
- United States
- Volunteers
- 80 people
- Sponsor
- University of Colorado, Denver
Vitamin D Deficiency, Depressive Symptoms
Supplementation and Depressive Symptomatology Incidence Among Saudi Arabian Adults
The goal of this randomized controlled trial is to explore the relationship between Vitamin D supplementation and depressive symptomatology in Saudi Arabian Population.
- Trial name
- NCT05916053
- Testing
- Vitamin D supplementation
- Where
- Saudi Arabia
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- Lebanese American University
Hyperphosphatemia
The Effect of Oral Niacinamide on Serum Phosphorus Levels in Hemodialysis Patients
Elevated phosphorus levels are a common problem in dialysis patients. However, it is associated with an increase in death and hospitalizations.
- Trial name
- NCT00316472
- Testing
- Niacinamide
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- Washington University School of Medicine
Vitamin D Deficiency, Insulin Resistance
Vitamin D Replacement in Insulin Resistant South Asians
This study will test the hypothesis that 6 months of periodic high dose Vitamin D3 replacement (200,000 and 100,000 units cholecalciferol, oral liquid drops at 6 to 8 week intervals) followed in-between by daily 1000 units…
- Trial name
- VITALITY (NCT01385345)
- Testing
- Vitamin D3 cholecalciferol
- Where
- United Kingdom
- Volunteers
- 3 people
- Sponsor
- University of Leicester
Vitamin D Deficiency, Chronic Renal Insufficiency
Vitamin D and Chronic Renal Insufficiency
Purpose of this study is to investigate the effect of treatment with vitamin D3 (cholecalciferol) compared with placebo in a trial including chronic kidney disease patients with vitamin D deficiency.
- Trial name
- NCT00968877
- Testing
- Cholecalciferol
- Volunteers
- 56 people
- Sponsor
- Odense University Hospital
Vitamin D Deficiency, Immune Health
Estimation of the Dietary Requirement for Vitamin D in Ethnic Groups
The aim of this study is to perform a double-blind, randomised, dose-response trial of vitamin D3 supplementation in United Kingdom (UK)-dwelling adults of white European, South Asian, and black African/Caribbean ethnicity to…
- Conditions
- Vitamin D Deficiency, Immune Health, Muscle Function
- Trial name
- NCT06067477
- Testing
- Vitamin D Supplement
- Where
- United Kingdom
- Volunteers
- 114 people, healthy volunteers welcome
- Sponsor
- University of Surrey
Size of the Uterine Fibroids
Effect of Vitamin D on the Size of Fibroids in Women With Vitamin D Deficiency
Vitamin D supplementation in patients with uterine fibroids who present hypovitaminosis D to re-establish their normal serum values could stabilize the size of the uterine fibroids and thus prevent their growth or reduce their…
- Trial name
- NCT03991078
- Where
- Spain
- Volunteers
- 15 people
- Sponsor
- Fundación IVI
Vitamin D Deficiency, Chemotherapy Effect
Vitamin D Can Increase Pathological Response of the Breast Cancer Patients Treated With Neoadjuvant Therapy
The aim of the study is to evaluate the relationship between the vitamin D replacement and pathological response in patients undergoing neoadjuvant therapy according to different molecular sub types.
- Conditions
- Vitamin D Deficiency, Chemotherapy Effect, Pathology
- Trial name
- NCT03986268
- Testing
- Vit D
- Where
- Turkey (Türkiye)
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Florence Nightingale Hospital, Istanbul
Renal Osteodystrophy, Chronic Kidney Diseases
Precision Medicine Approaches to Renal Osteodystrophy
Treatment of renal osteodystrophy is impeded by the lack of practical and accurate tools to determine underlying bone turnover. Gold standard bone biopsy is not practical in the clinic for the vast majority of kidney disease…
- Conditions
- Renal Osteodystrophy, Chronic Kidney Diseases, CKD-MBD, Bone Turnover Rate Disorder
- Trial name
- PMaROD (NCT05880914)
- Testing
- miRNAseq analysis, Standard treatment for bone disorder
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- Thomas Nickolas
Vitamin D Deficiency, Anemia
Effect of Vitamin D Supplementation on Erythropoietin Dosage in Hemodialysis Patients Who Have Vitamin D Deficiency
While vitamin D supplementation is safe and effective in repleting vitamin D levels in dialysis patients, the impact on anemia is unknown.
- Trial name
- NCT00915317
- Where
- United States
- Sponsor
- Kaiser Permanente
D Vitamin Deficiency Patients
Vitamin D Supplementation and the Immune Response
The main objective is to assess the variation in plasma levels of cathelicidin before and after influenza vaccination. All bibliographic data suggests that supplementation vitamin D in the elderly often deficient in this vitamin…
- Trial name
- NCT01893385
- Testing
- Vitamin D (drug)
- Where
- France
- Volunteers
- 37 people
- Sponsor
- University Hospital, Clermont-Ferrand
Polycystic Ovary Syndrome, Healthy
Vitamin D Treatment, Pharmacogenetics and Glucose Metabolism
Background: Polycystic ovary syndrome (PCOS) is as common as 5-10% of all women in Austria. PCOS women frequently present with metabolic disturbances, hyperandrogenism and infertility. New therapy concepts are warranted.
- Conditions
- Polycystic Ovary Syndrome, Healthy, Vitamin D Deficiency
- Trial name
- NCT01721915
- Testing
- Vitamin D supplementation
- Where
- Austria
- Volunteers
- 330 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
Hypovitaminosis D
Correction of Vitamin D Inadequacy in Nursing Home Residents
Vitamin D inadequacy continues to be neglected in nursing home residents. We hypothesized that part of this neglect is due to absence of data documenting safe and effective ways to replete this inadequacy.
- Trial name
- NCT00204906
- Testing
- vitamin D supplementation
- Where
- United States
- Sponsor
- University of Wisconsin, Madison
Carpal Tunnel Syndrome, Vitamin D Deficiency
Comparıson Of Electromyography Results Before And After Vıtamın D Treatment In Patıents Wıth Carpal Tunnel Syndrome
Therefore, we aimed to evaluate the effectiveness of vitamin D replacement therapy on pain, electrophysiological parameters, ultrasonographic measurement results and functional status scales in CTS patients with low serum vitamin…
- Trial name
- NCT06282640
- Testing
- Vitamin D
- Where
- Turkey (Türkiye)
- Volunteers
- 87 people
- Sponsor
- Dr. Ayşe Güç
Hypovitaminosis D
Importance of Dosing Regimen for the Effect of Vitamin D Supplementation
Vitamin D is a hormone with effects not only on the skeleton, but on most tissues in the body. Lack of vitamin D is associated with cardio-vascular disease (CVD), type 2 diabetes, cancer, infectious and immunological diseases, as…
- Trial name
- NCT03272126
- Testing
- Vitamin D
- Where
- Norway
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- University of Tromso
X-linked Hypophosphatemic Rickets/Osteomalacia
A Study of KRN23 in Pediatric Patients With X-linked Hypophosphatemic Rickets/Osteomalacia
Before switching to the post-marketing study: To evaluate the efficacy and safety of KRN23 administered subcutaneously once every 2 weeks in children with X-linked hypophosphatemic rickets/osteomalacia(XLH).
- Trial name
- NCT03233126
- Testing
- KRN23
- Where
- 4 sites in Japan
- Volunteers
- 16 people
- Sponsor
- Kyowa Kirin Co., Ltd.
End Stage Kidney Disease (ESKD), Hemodialysis
Medium Cut-Off and High-Flux Membranes on Mineral and Bone Metabolism in Hemodialysis Patients
This study aims to compare the effects of medium cut-off (MCO) and high-flux hemodialysis membranes on mineral and bone metabolism biomarkers in patients receiving maintenance hemodialysis.
- Conditions
- End Stage Kidney Disease (ESKD), Hemodialysis, Chronic Kidney Disease Mineral and Bone Disorder
- Trial name
- MBD-HD (NCT07685223)
- Testing
- Medium Cut-Off Hemodialysis Membrane, High-Flux Hemodialysis Membrane
- Where
- Turkey (Türkiye)
- Volunteers
- 30 people
- Sponsor
- Gazi University
Vitamin D Deficiency
Vitamin D 24'000 IU for Oral Intermittent Supplementation
Vitamin D deficiency (defined as 25(OH)-vitamin D serum level <50 nmol/l) is cured with oral supplementation. National guidelines recommend the administration of 800 IU cholecalciferol daily for an effective treatment, especially…
- Trial name
- DO-IT (NCT03920150)
- Testing
- Vitamin D3, Vitamin D oily capsules
- Where
- Switzerland
- Volunteers
- 58 people
- Sponsor
- University Hospital, Basel, Switzerland
Vitamin D Inadequacy, Vitamin D Deficiency
Clinical Approaches to Correcting Vitamin D Inadequacy and Maintaining Adequacy
Vitamin D is available in two forms, vitamin D2 and vitamin D3. It has previously been assumed that these two forms maintain blood vitamin D equally. However, this may not be the case.
- Trial name
- D2/D3 (NCT00692120)
- Testing
- Cholecalciferol (vitamin D3), Ergocalciferol (vitamin D2)
- Where
- United States
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Covid19, Corona Virus Infection
Clinical Outcomes of High Dose Vitamin D Versus Standard Dose in COVID-19 Egyptian Patients
Vitamin D is a secosteroid hormone which may have beneficial role in reducing COVID-19 adverse outcomes by first regulating the renin angiotensin system (RAS).
- Conditions
- Covid19, Corona Virus Infection, Cytokine Storm, Vitamin D Deficiency
- Trial name
- NCT04738760
- Where
- Egypt
- Volunteers
- 116 people
- Sponsor
- Ain Shams University
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