Clinical trials: Vitamin D Deficiency, completed
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
Nursing Home, Vitamin D Deficiency
SUN LIGHT EXPOSURE AND VITAMIN D LEVEL IN NURSING HOME
Objective: The aim of the present study was to determine the effect of nursing interventions and sunlight exposure to reach optimum vitamin D levels by individuals living in nursing homes on vitamin D levels.
- Trial name
- NCT04469257
- Testing
- Sunbathing
- Where
- Turkey (Türkiye)
- Volunteers
- 40 people
- Sponsor
- Tokat Gaziosmanpasa University
COVID-19, Vitamin D Deficiency
Investigating the Role of Vitamin D in the Morbidity of COVID-19 Patients
The 2019 novel coronavirus disease (COVID-2019) pandemic is an enormous health issue of worldwide scale. Prevention and/or treatment with a widely-available and already-licensed product such as vitamin D (cholecalciferol) could…
- Trial name
- NCT04386044
- Where
- United Kingdom
- Volunteers
- 986 people
- Sponsor
- Tameside General Hospital
Hypocalcemia, Hypovitaminosis D
Calcium and Vitamin D Intakes in Children
Calcium (Ca2+) and vitamin D (VitD) play an important role in child health. Aims. The investigators evaluated the daily intake of Ca2+ and VitD in healthy children; and the efficacy of Ca2+ and VitD supplementation.
- Trial name
- NCT01638494
- Testing
- Colecalcium supplement
- Volunteers
- 184 people
- Sponsor
- Federico II University
Hypophosphatasia (HPP)
Retrospective, Non-interventional Natural History of Patients With Juvenile-onset Hypophosphatasia (HPP)
The purpose of this study is to characterize the natural history of HPP in patients with Juvenile-onset HPP.
- Trial name
- NCT02104219
- Where
- 19 sites in United States, Australia and 6 more
- Volunteers
- 32 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Primary Hyperparathyroidism, Vitamin D Deficiency
Vitamin D Repletion in Primary Hyperparathyroidism
This study will look at the effect of 2 treatment regimens that contain vitamin D in a six-month treatment trial of patients with PHPT who are vitamin D deficient.
- Trial name
- NCT01306656
- Testing
- 10,000 IU Vitamin D3, Vitamin D
- Where
- United States
- Volunteers
- 9 people
- Sponsor
- Columbia University
Dementia, Viral Infection
Electronic Medical Records to Increase Adherence to the Choosing Wisely Recommendations
Audit and Feedback (A\&F), a strategy aimed at promoting modified practice through performance feedback, is a method to change provider behaviour and reduce unnecessary medical services.
- Conditions
- Dementia, Viral Infection, Vitamin D Deficiency
- Trial name
- NCT05385445
- Testing
- Audit and Feedback
- Where
- Canada
- Volunteers
- 239 people, healthy volunteers welcome
- Sponsor
- University of Manitoba
Neoplasms, Antioxidants
Oxidoreductive Balance and Lysosomal Activity in Cancer Patients.
The research aims to determine the parameters of oxidative stress and inflammatory processes and compare these parameters with the image obtained using positron emission tomography (PET) with 2-deoxy-2-[fluorine-18]fluoro…
- Conditions
- Neoplasms, Antioxidants, Oxidative Stress, Lipid Peroxidation
- Trial name
- NCT03470857
- Testing
- Patients
- Where
- 3 sites in Poland
- Volunteers
- 83 people, healthy volunteers welcome
- Sponsor
- Nicolaus Copernicus University
Arterial Dysfunction, Chronic Kidney Disease
Vitamin D and Arterial Function in Patients With Chronic Kidney Disease
The purpose of this study is to determine whether nutritional (cholecalciferol) or active vitamin D (calcitriol) supplementation improves vascular endothelial function in patients with stage IIIB and IV chronic kidney disease…
- Trial name
- NCT01384539
- Testing
- Cholecalciferol, Calcitriol
- Where
- United States
- Volunteers
- 128 people
- Sponsor
- University of Colorado, Denver
Healthy
Assessment of the Efficacy of Vitamin D-fortified Bread in Healthy Adults
The aim of this study is to evaluate the efficacy of daily intake of fortified bread with vitamin D on serum 25-hydroxyvitamin D level, glycemic and lipidemic status in healthy subjects compared to vitamin D supplement.
- Trial name
- NCT02516254
- Testing
- fortified bread, supplement
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- National Nutrition and Food Technology Institute
Epilepsy, Vitamin D Deficiency
Vitamin D Supplementation to Prevent Vitamin D Deficiency for Children With Epilepsy
To determine the maintenance dose of vitamin D supplementation required for children with epilepsy to maintain normal vitamin D level.
- Trial name
- NCT03536845
- Testing
- Vitamin D 3
- Where
- Saudi Arabia
- Volunteers
- 116 people
- Sponsor
- King Saud University
Vitamin D Deficiency
The Pharmacokinetics of a Single Large Dose of Vitamin D3
When people eat a meal, some, but not all of the calcium in that meal is absorbed, that is, moved into the bloodstream. When the skin is exposed to sunlight during summer months, Vitamin D is made there and then modified into…
- Trial name
- Stoss (NCT00473239)
- Testing
- cholecalciferol.
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Creighton University
Obesity and Overweight, Nutritional Deficiency
Nutritional Health and Satisfaction After Bariatric Surgery: a Five-Year Retrospective Study
A retrospective study analyzing long-term outcomes of metabolic bariatric surgery (MBS) with a focus on weight loss, nutritional deficiencies, and patient satisfaction over a five-year follow-up.
- Conditions
- Obesity and Overweight, Nutritional Deficiency, Bariatric Surgery
- Trial name
- NCT06664580
- Testing
- Metabolic Bariatric Surgery Procedures
- Volunteers
- 249 people
- Sponsor
- San Raffaele Telematic University
Vitamin d Deficiency
Blue Sky Study: Impact of Milk and Vitamin D for Child Growth and Health
This intervention study will address the impact of vitamin D fortified milk and vitamin D supplements on the growth, levels of vitamin D, insulin-like growth factor 1, growth hormone, academic attention, respiratory infections…
- Trial name
- BSS (NCT00886379)
- Testing
- Mongolian milk without vitamin D, Mongolian milk with vitamin D, UHT milk
- Volunteers
- 597 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Vitamin D Deficiency, Parkinson Disease
12 Weeks Vitamin D Supplementation and Physical Activity in PD Patients With DBS
Parkinson's disease (PD) is the second most frequently appearing neurodegenerative disease. It is a progressive disease of the central nervous system (CNS) and affects around 1% of people over 60 years old.
- Trial name
- NCT04768023
- Testing
- Juvit D3
- Where
- Poland
- Volunteers
- 50 people
- Sponsor
- Medical University of Gdansk
Vitamin D Deficiency, Primary Open-angle Glaucoma
Comparison of Vitamin D Status and Vitamin D Receptor Polymorphisms in Patients With High Myopia and Primary Open-angle Glaucoma
Vitamin D deficiency is known to be significantly associated with high myopia. This study investigated the vitamin D status in patients with high myopia and primary open-angle glaucoma, in order to understand the relationship…
- Conditions
- Vitamin D Deficiency, Primary Open-angle Glaucoma, High Myopia, Vitamin D Receptor Polymorphisms
- Trial name
- NCT03021629
- Testing
- Serum levels of 1a, 25-Dihydroxyvitamin D3 were measured by an enzyme-linked immuno-absorbent assay
- Where
- China
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Lv Yingjuan
Vitamin D3 Deficiency
The Effect of Vitamin D Sublingual Spray on Vitamin D3 Levels in the Blood Compared to Other Forms of Vitamin D3
The randomized comparative study was performed on 99 outpatients with below 30 ng/ml of vitamin D. Participants were randomized into three groups to receive vitamin D3 supplementation in three different forms - sublingual spray…
- Trial name
- NCT06142136
- Testing
- Vitamin D substitution with sublingual sprayable microemulsion., Vitamin D substitution with oil droplets, Vitamin D substitution with capsules
- Where
- Latvia
- Volunteers
- 99 people, healthy volunteers welcome
- Sponsor
- Pauls Stradins Clinical University Hospital
Vitamin D Deficiency
Rapid Normalization of Vitamin D Deficiency in PICU
Vitamin D plays an important role in calcium balance, heart and lung health, inflammation, infection prevention, and muscle strength.
- Trial name
- VITdALIZE-KIDS (NCT03742505)
- Testing
- Cholecalciferol
- Where
- 10 sites in Canada
- Volunteers
- 424 people
- Sponsor
- Children's Hospital of Eastern Ontario
Nutritional Status, Nutrient Deficiency
Adults Nutrition as a Protective or Health-risk Factor
To obtain up-to-date data on nutrient intakes in adults, a national dietary survey - the EU Menu study will be conducted during 12 consecutive months in 2017/2018, providing data on the consumption of foods and enabling the…
- Conditions
- Nutritional Status, Nutrient Deficiency, Micronutrient Deficiency, Vitamin D Deficiency
- Trial name
- NUTRIHEALTH (NCT03284840)
- Testing
- Assessement of nutritional status, Thyroid size
- Where
- 3 sites in Slovenia
- Volunteers
- 280 people, healthy volunteers welcome
- Sponsor
- Institute of Nutrition, Slovenia (Nutris)
Vitamin D Deficiency
Vitamin D Supplementation and Sunlight Exposure in Brazilian Women Living in Opposite Latitudes (The D-SOL Study)
There is a consensus that vitamin D deficiency is a public health issue because of its implications in several diseases including, osteopenia, osteomalacia, heart disease, diabetes (type I and II), inflammatory diseases, multiple…
- Trial name
- D-SOL (NCT03318029)
- Testing
- Vitamin D supplementation
- Where
- 2 sites in Brazil, United Kingdom
- Volunteers
- 136 people, healthy volunteers welcome
- Sponsor
- University of Surrey