Clinical trials: Vitamin D Deficiency, completed
Ulcerative Colitis, Vitamin D Deficiency
Effect of Vitamin D Supplementation on Vedolizumab Response in Patients With Ulcerative Colitis
It is uncertain whether vitD3 supplementation is beneficial for the remission of ulcerative colitis (UC). The effects of vitD3 supplements on the efficacy of vidrecizumab in Chinese UC patients were retrospectively analyzed.
- Conditions
- Ulcerative Colitis, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT05649462
- Where
- China
- Volunteers
- 80 people
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Bone Diseases, Osteomalacia
Study of the Diagnostic Value of Stable Calcium Isotope Profiling in Bone and Calcium Disorders
The purpose of this study is to determine whether mass spectrometry analysis of stable (non-radioactive) calcium isotopes in plasma or urine samples can help in the diagnosis of bone and calcium disorders.
- Conditions
- Bone Diseases, Osteomalacia, Osteoporosis
- Trial name
- eCaSIS (NCT02252679)
- Where
- 2 sites in Belgium, Germany
- Volunteers
- 54 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Depression, Chronic Liver Disease
Vitamin D Improves Depression in Liver Patients
This study evaluates the efficacy of vitamin D replacement therapy in reducing depressive symptoms in patients with chronic liver disease and vitamin D deficiency.
- Trial name
- CLDVitD (NCT02359266)
- Testing
- Vitamin D
- Where
- Germany
- Volunteers
- 111 people
- Sponsor
- Universität des Saarlandes
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
Hypertension, Vitamin D Deficiency
Blood Pressure in Blacks and Calcium (BBC) and Vitamin D Study
Adequate levels of vitamin D are essential for bone health at all ages but low levels of vitamin D may also negatively impact other aspects of health such as blood pressure.
- Trial name
- BBC (NCT03070483)
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 5 people, healthy volunteers welcome
- Sponsor
- Loyola University
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
Vitamin D Deficiency
Vitamin D Deficiency, Insulin Resistance and FGF-23
The purpose of this project is to determine if treating vitamin D deficiency decreases insulin resistance and improves insulin secretion in healthy volunteers.
- Trial name
- NCT00491322
- Testing
- Ergocalciferol
- Where
- United States
- Volunteers
- 92 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Vitamin D Deficiency
Familial Clustering of Vitamin D Deficiency Via Shared Environment: The Korean National Health And Nutrition Examination Survey 2008-2012
Vitamin D deficiency is a modifiable risk factor for poor bone health. Familial correlation of serum 25-hydroxyvitamin D concentration (25(OH)D) was reported in twin- or family-based studies, mostly from Caucasian…
- Trial name
- NCT03349879
- Where
- South Korea
- Volunteers
- 28,551 people, healthy volunteers welcome
- Sponsor
- Yonsei University
Hypophosphatemia, Hypophosphatemic Rickets
Open Label Trial Assessing Safety and Efficacy of Burosumab (KRN23), in a Patient With ENS and Hypophosphatemic Rickets
A 52 week, open label trial to assess the safety and efficacy of KRN23, an investigational antibody to FGF23, in a single pediatric patient with Epidermal Nevus Syndrome(ENS) and associated hypophosphatemic rickets A 26 weeks…
- Conditions
- Hypophosphatemia, Hypophosphatemic Rickets, Pain, Chronic
- Trial name
- NCT03581591
- Testing
- Burosumab
- Where
- United States
- Volunteers
- 1 people
- Sponsor
- Redwood Dermatology Sciences
Insulin Resistance
Effect of Vitamin D Supplementation on Oral Glucose Tolerance Among Obese Adolescents
Childhood obesity is a rapidly growing epidemic in the US and the world. Current estimates suggest that 30% of our nation's children are either overweight ot obese.
- Trial name
- NCT01856946
- Testing
- 4,000 IU vitamin D3
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Hyperparathyroidism
Effects of Vitamin D Replacement in Patients With Primary Hyperparathyroidism (PHPT)
The goal of this clinical research study is to learn how the standard practice of giving Vitamin D supplements to patients with a Vitamin D deficiency may affect the size of the parathyroid glands in patients with PHPT and a…
- Trial name
- NCT00538720
- Testing
- Vitamin D, Four-dimensional computed tomography (4DCT)
- Where
- United States
- Volunteers
- 22 people
- Sponsor
- M.D. Anderson Cancer Center
Vitamin D Deficiency
The Effect of Vitamin D and Exercise on Balance in Postmenopausal Women
In recent years, skeletal and nonskeletal effects of vitamin D has been studied. One of the effects of it was balance and fall prevention. However, these studies were performed on older patients who had not vitamin D deficiency.
- Trial name
- NCT03608488
- Testing
- Vitamin D, Exercise
- Where
- Turkey (Türkiye)
- Volunteers
- 110 people, healthy volunteers welcome
- Sponsor
- Sultan Abdulhamid Han Training and Research Hospital, Istanbul, Turkey
Other Preterm Infants, Vitamin D Deficiency
The Effect of Vitamin D Administration to Premature Infants on Vitamin D Status and Respiratory Morbidity
This trial objective is to assess whether doubling the daily intake of vitamin D improves serum vitamin D levels and serves as primary prevention of respiratory infections and asthma in premature infants.
- Conditions
- Other Preterm Infants, Vitamin D Deficiency, Bronchiolitis, Asthma
- Trial name
- NCT02404623
- Testing
- Vitamin D
- Where
- Israel
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Soroka University Medical Center
Vitamin D Deficiency
The Effect of Combinatorial Nutritional Supplementation on Immune Function in Healthy Older Adults
Many older adults do not get enough zinc, vitamin C and vitamin D, and this can be related to decreased ability to fight infection.
- Trial name
- NCT02876315
- Testing
- Redoxon VI
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Oregon State University
Sickle Cell Disease, Anemia, Sickle Cell
Daily Vitamin D for Sickle-cell Respiratory Complications
This study aims to answer the question whether daily oral vitamin D supplementation can reduce the risk of respiratory or lung complications in children and adolescents with sickle cell disease.
- Conditions
- Sickle Cell Disease, Anemia, Sickle Cell, Anemia, Hemolytic, Congenital, Respiratory Tract Diseases
- Trial name
- ViDAS-2 (NCT04170348)
- Testing
- Daily oral vitamin D3, 3,333 IU, Monthly oral vitamin D3, 100,000 IU
- Where
- United States
- Volunteers
- 58 people
- Sponsor
- Columbia University
Deficiency, Vitamin D
Vitamin D Status After Single Oral Dose of Cholecalciferol in Low Fat Meal Compared to High-fat Meal
The purpose of this study is to evaluate the absorption of dietary supplement of vitamin D3 (cholecalciferol), through the variation of 25 (OH) D levels, as the fat content of the meal associated with the administration of the…
- Trial name
- VITDAB_08606 (NCT00968734)
- Testing
- colecalciferol
- Where
- Brazil
- Volunteers
- 30 people
- Sponsor
- Federal University of Rio Grande do Sul
Hypovitaminosis D
A Study on Oral Vitamin D Megadoses
The purpose of this study is to determine if infrequent administration of oral vitamin D megadoses is effective treatment to maintain serum 25-hydroxyvitamin D(3) above target levels of 50-75 nmol/L.
- Trial name
- NCT01067898
- Testing
- vitamin D3 (cholecalciferol), olive oil, calcium carbonate
- Where
- Finland
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Helsinki University Central Hospital
Vitamin D Deficiency
Availability of Vitamin D in Orange Juice
The purpose of this study was to determine whether vitamin D2 and vitamin D3 in orange juice are effective at raising vitamin D levels in the blood and if vitamin D2 and vitamin D3 in orange juice raised blood levels of 25(OH)D…
- Trial name
- NCT01778114
- Testing
- Vitamin D2 in orange juice, Vitamin D3 in orange juice, Vitamin D2
- Where
- United States
- Volunteers
- 86 people, healthy volunteers welcome
- Sponsor
- Boston University
HIV, Metabolic Syndrome
Incidence of HANA Conditions in HIV-infected Individuals
With the availability of effective anti-retroviral therapy, HIV-infected individuals are expected not to die of AIDS and have longer life expectancy.
- Conditions
- HIV, Metabolic Syndrome, Osteopenia, Osteoporosis
- Trial name
- NCT03483584
- Where
- Hong Kong
- Volunteers
- 215 people
- Sponsor
- Chinese University of Hong Kong
Vitamin D Deficiency, Pregnancy
Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South Carolina
Science News (October 2004) called vitamin D deficiency a "silent epidemic" in America, with no group unaffected. Using new guidelines of optimal vitamin D levels, more than 90% of African American women now suffer from vitamin D…
- Trial name
- NCT00412087
- Testing
- cholecalciferol (vitamin D3), cholecalciferol
- Where
- United States
- Volunteers
- 564 people, healthy volunteers welcome
- Sponsor
- Medical University of South Carolina