Clinical trials: Deficiency, Vitamin D
Non-alcoholic Fatty Liver Disease, Vitamin D Deficiency
Vitamin D in Fatty Liver Disease
This study evaluates the influence of vitamin D in reducing laboratory, elastographic (Fibroscan) and metabolic components of NAFLD. Half of the patients will receive vitamin D (Plivit D3) while the other half will receive placebo
- Trial name
- NCT04038853
- Testing
- 1,25-Dihydroxyvitamin D
- Volunteers
- 360 people
- Sponsor
- University Hospital Rijeka
Vitamin D Deficiency, Osteopenia of Prematurity
The High Initial Dose of Monitored Vitamin D Supplementation in Preterm Infants.
The aim of this study will be to assess the effectiveness of monitored vit D supplementation in a population of preterm infants and to identify whether the proper vit D supplementation in preterm infants can reduce the incidence…
- Conditions
- Vitamin D Deficiency, Osteopenia of Prematurity, Nephrolithiasis, Metabolic Bone Disease
- Trial name
- HIDVID (NCT06199102)
- Testing
- cholecalciferol/ Devikap
- Where
- Poland
- Volunteers
- 130 people
- Sponsor
- Princess Anna Mazowiecka Hospital, Warsaw, Poland
Systemic Lupus Erythematosus
Vitamin D3 Treatment in Pediatric Systemic Lupus Erythematosus
The primary objective of this study is to evaluate the effects of 18 weeks of high-dose vitamin D3 supplementation compared with standard-dose vitamin D3 supplementation on immune function, glucose homeostasis, and bone…
- Trial name
- NCT01709474
- Testing
- Vitamin D3 6000 IU, Vitamin D3 400 IU
- Where
- 13 sites in United States
- Volunteers
- 7 people
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
Vitamin D Deficiency
Effect of Consumption of Post-harvest UV-B Treated Mushrooms on Vitamin D Status of Healthy Adults
This study will investigate whether mushrooms treated with ultraviolet (UV) light to increase their vitamin D2 content are actually a good source of vitamin D when consumed daily with a meal (lunch).
- Trial name
- NCT01443897
- Testing
- 1,000 IU vitamin D2, mushrooms, UVB-treated mushrooms, 400 IU vitamin D2
- Where
- United States
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- USDA, Western Human Nutrition Research Center
Vitamin D Status, Osteoporosis
Vitamin D Status and Bone Health of Older Adults in Care Facilities
Vitamin D deficiency is proposed to be prevalent in community-dwelling older adults, with prevalence substantially higher among older adults in residential care facilities.
- Conditions
- Vitamin D Status, Osteoporosis, Sarcopenia
- Trial name
- NCT04399291
- Where
- United Kingdom
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Secondary Hyperparathyroidism, Chronic Kidney Disease-Mineral and Bone Disorder
Injection of Teriparatide to Prevent Hypocalcemia After Parathyroidectomy in Dialysis Patients (TeriCa).
This is a pilot randomized controlled trial aimed to evaluate the effect of teriparatide on the clinical course of hypocalcemia after parathyroidectomy for secondary hyperparathyroidism in dialysis-dependent patients.
- Conditions
- Secondary Hyperparathyroidism, Chronic Kidney Disease-Mineral and Bone Disorder, Dialysis, Hypocalcemia
- Trial name
- TeriCa (NCT04750460)
- Testing
- Teriparatide
- Where
- Russia
- Volunteers
- 20 people
- Sponsor
- Saint Petersburg State University, Russia
Insulin Resistance, Insulin Sensitivity
Calcium, Vitamin D and Metformin to Treat Insulin Resistance in Obese African American Adolescent Females
This is a feasibility study to examine the treatment with Metformin, vitamin D with calcium supplement for insulin resistance in obese, black, female teens.
- Conditions
- Insulin Resistance, Insulin Sensitivity, Obesity, Vitamin D Deficiency
- Trial name
- NCT01107808
- Testing
- Calcium and Vit D, Metformin, Vit D and Calcium
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Alabama at Birmingham
Vitamin d Deficiency
The Effect of UV-C Enriched Foods on Vitamin D Deficiency
This study is an experimental design study in which demographic characteristics, food consumption, biochemical parameters and anthropometric measurements of individuals with low vitamin D levels before and after consuming…
- Trial name
- NCT06098820
- Testing
- Vitamin D status
- Where
- Turkey (Türkiye)
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Okan University
X-linked Hypophosphatemia (XLH)
Effective Dosing of Burosumab in XLH
X-linked hypophosphataemia (XLH) is a rare, hereditary condition. The genetic defect leads to low blood phosphate levels and vitamin D suppression. Phosphate is required for strong bones and teeth and to store energy in cells.
- Trial name
- NCT07183579
- Where
- United Kingdom
- Volunteers
- 120 people
- Sponsor
- University of Nottingham
Prediabetes, Vitamin D Deficiency
Effect of Vitamin D Deficiency and Vitamin D Supplementation on Glucose Metabolism
This study was intended to evaluate the effect of vitamin D supplementation on insulin sensitivity and pancreatic islet beta-cell function.
- Trial name
- NCT00749918
- Testing
- Cholecalciferol (vitamin D3)
- Where
- United States
- Volunteers
- 12 people, healthy volunteers welcome
- Sponsor
- University of Minnesota
Vitamin d Deficiency, COVID-19
Risk in Devel Long-COVID in Contracting SARS-CoV-2 Infection After COVID-19 Vaccination in Relation to Vitamin D3 Suppl
The aim of this observational retrospective study is to evaluate the effect of supplementation with cholecalciferol D3 in reducing the risk of: occurence of Long COVID syndrome after acute COVID-19 illness occurence of SARS-CoV-2…
- Conditions
- Vitamin d Deficiency, COVID-19, Long COVID
- Trial name
- LONGVITAVAX2 (NCT06452082)
- Where
- Italy
- Volunteers
- 200 people
- Sponsor
- IRCCS San Raffaele
Postmenopausal Osteoporosis, Postmenopause
Frequency of Hyperparathyroidism in Postmenopausal Osteoporosis and Its Treatment
Recently, an increase in the prevalence of hyperparathyroidism and hypovitaminosis D in postmenopause women has been occurring in Mexico and the world.
- Conditions
- Postmenopausal Osteoporosis, Postmenopause, Hyperparathyroidism, Secondary, Hypovitaminosis D
- Trial name
- NCT05347082
- Testing
- Cholecalciferol
- Where
- Mexico
- Volunteers
- 47 people
- Sponsor
- Hospital Regional 1o de Octubre
Hyperphosphatemia
The Effect of Oral Niacinamide on Plasma Phosphorus Levels in Peritoneal Dialysis Patients
Hyperphosphatemia is common in the peritoneal dialysis population. Current strategies are insufficient to optimize phosphorus control.
- Trial name
- NCT00508885
- Testing
- Niacinamide
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Washington University School of Medicine
Vitamin D Deficiency, Type 2 Diabetes Mellitus
Vitamin D, Cardiovascular Disease, and African Americans
African-Americans have higher rates of cardiovascular disease morbidity and mortality, as well as vitamin D deficiency. Multiple observational studies have demonstrated an increased risk of vitamin D deficiency in African…
- Conditions
- Vitamin D Deficiency, Type 2 Diabetes Mellitus, Cardiovascular Disease
- Trial name
- NCT01655810
- Testing
- Vitamin D3, Calcium carbonate
- Where
- United States
- Volunteers
- 86 people
- Sponsor
- Washington University School of Medicine
Hypovitaminosis D, Type 2 Diabetes Mellitus
Vitamin D and Type 2 Diabetes - a Cross Sectional Study
The purpose of the study is to describe vitamin D status among patients with type 2 diabetes and to determine the association between serum 25-hydroxyvitamin D and glycemic control, markers of inflammation and blood pressure
- Trial name
- NCT00695474
- Volunteers
- 150 people
- Sponsor
- University of Aarhus
Hepatitis C Infection, Vitamin D Deficiency
Effects of Vitamin D on Inflammation in Liver Disease
Chronic liver diseases are associated with inflammation. The investigators postulate that Vitamin D may modulate inflammation. Thus the investigators will study the effect of Vitamin D replacement in patients with Hepatitis C…
- Trial name
- NCT01754961
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 24 people
- Sponsor
- Veterans Medical Research Foundation
Lower Urinary Tract Symptoms, Vitamin D Deficiency
Uroflowmetry Results and Vitamin D Levels
The investigators aimed to evaluate the relationship between LUTS and vitamin D with uroflowmetry parameters in female patients. They found no relation between vitamin D levels and LUTS in respect to uroflowmetry.
- Conditions
- Lower Urinary Tract Symptoms, Vitamin D Deficiency, Calcium Deficiency
- Trial name
- NCT04405141
- Volunteers
- 186 people
- Sponsor
- Umraniye Education and Research Hospital
PCOS, Vitamin D Deficiency
Vitamin D for Polycystic Ovary Syndrome Clomiphene Resistant Women
This study is determining the therapeutic effect of Vitamin D supplements to Pcos clomiphene resistant polycystic ovarian syndrome Women. Half of patients will receive Vitamin D with metformin while other half metformin only.
- Trial name
- NCT04010942
- Testing
- Vit D, Metformin, Clomiphene
- Where
- Egypt
- Volunteers
- 120 people
- Sponsor
- Ain Shams University
Vitamin D Deficiency, Cardiometabolic Risk Factors
Comparison of Sunlight Exposure and Vitamin D Supplementation on Serum 25-hydroxyvitamin D Levels
This study aimed to compare the effects between sunlight exposure and oral vitamin D supplementation on serum 25-hydroxyvitamin D concentration and metabolic markers in Korean young adults.
- Trial name
- NCT03310242
- Testing
- Sunlight Exposure, Vitamin D Supplementation
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Seoul National University Hospital
Vitamin D 25-Hydroxylase Deficiency, Undernutrition
Impact of Trout Fish, Cow Milk With Egg, Vitamin D Supplementation, and Dietary Education on Vitamin D Status, Undernutrition, and Neurocognitive Outcomes Among School Children in Pakistan: An Open-label Individually Randomized Controlled Trial
Vitamin D deficiency and undernutrition are major public health concerns globally, particularly among children in low-resource and high-altitude settings.
- Conditions
- Vitamin D 25-Hydroxylase Deficiency, Undernutrition, Neurocognitive Development
- Trial name
- NCT07864662
- Testing
- Vitamin D supplement 4000 IU weekly, 200 grams of cooked trout fish, 250 milliliters of whole cow milk + whole egg
- Where
- Pakistan
- Volunteers
- 304 people
- Sponsor
- Aga Khan University
The first 1,020 results can be paged through. Add a filter or change the sort order to reach the rest.