Clinical trials: Vitamin Deficiencies
Vitamin D Deficiency
Vitamin Deficiency in Immigrants, a Treatment Study
The purpose of this study is to determine the efficacy of different doses of vitamin D in persons, immigrated to Sweden from Middle East or Africa, with decreased S vitamin D.
- Trial name
- VIDI2 (NCT01419119)
- Testing
- Cholecalciferol high dose at Vitamin D deficiency, Cholecalciferol median dose at Vitamin D insufficiency, Cholecalciferol low dose at Vitamin D deficiency
- Where
- Sweden
- Volunteers
- 160 people
- Sponsor
- Umeå University
Osteoporosis, Osteopenia
Does Treatment of Hypovitaminosis D Increase Calcium Absorption?
The purpose is to perform a one-year study designed to assess whether treatment of hypovitaminosis D increases intestinal absorption of calcium, subsequent retention of calcium within bone, decreases bone turnover, and favorably…
- Conditions
- Osteoporosis, Osteopenia, Vitamin D Deficiency, Hypoparathyroidism
- Trial name
- NCT00581828
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 19 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Sepsis, Kidney Injury
Thiamine as a Renal Protective Agent in Septic Shock
This is a randomized, double-blind, placebo controlled study to investigate the effect of intravenous thiamine (vitamin B1) on renal function in septic shock.
- Conditions
- Sepsis, Kidney Injury, Thiamine Deficiency
- Trial name
- NCT03550794
- Testing
- Thiamine Hydrochloride
- Where
- 4 sites in United States
- Volunteers
- 95 people
- Sponsor
- Beth Israel Deaconess Medical Center
X-linked Hypophosphatemia, Hypophosphatemic Rickets
Calcitriol Monotherapy for X-Linked Hypophosphatemia
Children and adults with XLH recruited will be treated with calcitriol alone (without phosphate supplementation) for one year, during which the calcitriol dose will be escalated during the first 3 months of therapy.
- Conditions
- X-linked Hypophosphatemia, Hypophosphatemic Rickets, Hypophosphatemic Rickets, X-Linked Dominant
- Trial name
- NCT03748966
- Testing
- Calcitriol
- Where
- United States
- Volunteers
- 16 people
- Sponsor
- Massachusetts General Hospital
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
Respiratory Infection
Vitamin D Supplementation and Acute Respiratory Infection in Older Long-Term Care Residents
This study will test the role of high dose vitamin D supplementation in prevention of acute respiratory infection in older nursing home residents.
- Trial name
- NCT01102374
- Testing
- High Dose Vitamin D, Standard Dose Vitamin D, Usual Care
- Where
- United States
- Volunteers
- 107 people
- Sponsor
- University of Colorado, Denver
Vitamin D Deficiency, Vitamin D Insufficiency
Evaluating the Effect of SOLIUS UV Light Source in Improving Vitamin D Status
The aim of this study is to evaluate the safety and effectiveness of the SOLIUS System in improving serum levels of 25-hydroxyvitamin D in vitamin D deficient/ insufficient adults of various skin types.
- Trial name
- NCT04780776
- Testing
- UVB treatment
- Where
- United States
- Volunteers
- 69 people, healthy volunteers welcome
- Sponsor
- Boston University
Vitamin D Deficiency
Safety of Vitamin D Supplementation in Older Persons
This study will evaluate the safety over 6 months of two different doses of vitamin D (cholecalciferol) in men and women age 65 and older. It will also evaluate if supplementation with vitamin D improves physical performance.
- Trial name
- NCT00681590
- Testing
- cholecalciferol (vitamin D)
- Where
- United States
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- University of Miami
Vitamin D Deficiency, Primary Hyperparathyroidism
Effect of Vitamin D Treatment in Primary Hyperparathyroidism
The primary aim of the study is to assess whether 6-months of vitamin D supplements can decrease PTH compared with placebo treatment in primary hyperparathyroidism.
- Conditions
- Vitamin D Deficiency, Primary Hyperparathyroidism, Hypercalcemia
- Trial name
- NCT00674154
- Testing
- Cholecalciferol
- Where
- Denmark
- Volunteers
- 46 people
- Sponsor
- University of Aarhus
Vitamin B12 Deficiency
Impact of Vitamin B12 Replacement on Epogen Dosing and Improvement of Quality of Life in Hemodialysis Patients
Vitamin B12 has several important functions in the body, two of which are production of red blood cells and the maintenance of a healthy nervous system. When vitamin B12 is deficient, abnormal red blood cells form.
- Trial name
- NCT01876732
- Testing
- Vitamin B12
- Where
- United States
- Volunteers
- 132 people
- Sponsor
- Northwell Health
Hypophosphatasia (HPP)
Safety and Efficacy Study of Asfotase Alfa in Severely Affected Infants With Hypophosphatasia (HPP)
This clinical trial studies the safety and efficacy of asfotase alfa in infants and young children with infantile onset HPP.
- Trial name
- NCT00744042
- Testing
- asfotase alfa
- Where
- 10 sites in United States, Canada and 2 more
- Volunteers
- 11 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Development, Vitamin Deficiency
Vitamin B12, Neurodevelopment and Growth in Nepal
Rationale: Globally, vitamin B12 deficiency is one of the most common micronutrient deficiencies. The only relevant source of Vitamin B12 is animal-source foods.
- Conditions
- Development, Vitamin Deficiency, Malnutrition
- Trial name
- BeLive (NCT02272842)
- Testing
- Vitamin B12
- Where
- Nepal
- Volunteers
- 600 people
- Sponsor
- Centre For International Health
Hypophosphatasia
Open-Label Study of Asfotase Alfa in Infants and Children ≤ 5 Years of Age With Hypophosphatasia (HPP)
This clinical trial was conducted to study hypophosphatasia (HPP), a bone disorder caused by gene mutations or changes. These gene mutations cause low levels of an enzyme needed to harden bone.
- Trial name
- NCT01176266
- Testing
- asfotase alfa
- Where
- 23 sites in United States, Australia and 10 more
- Volunteers
- 69 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Obesity, Vitamin D Deficiency
Vitamin D and Vascular Health in Children
In this study, we will test the central hypothesis that enhancement of vitamin D status in obese and overweight children will improve their vascular health and their cardiovascular disease (CVD) and metabolic syndrome risk…
- Trial name
- NCT01797302
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Asthma, Vitamin D Deficiency
Vitamin D Oral Replacement in Asthma
The overall objective of the study is to determine the pharmacokinetics of Vitamin D supplementation in children who have asthma and are overweight or obese.
- Conditions
- Asthma, Vitamin D Deficiency, Pediatric Obesity
- Trial name
- VDORA1 (NCT03686150)
- Testing
- Vitamin D3 oral regimen
- Where
- 15 sites in United States
- Volunteers
- 112 people
- Sponsor
- IDeA States Pediatric Clinical Trials Network
Vitamin D Deficiency
Treatment Study of Vitamin D Deficiency in Adolescents
To compare the efficacy of two high dose vitamin D3 regimens (5,000 IU daily vs. 50,000 IU weekly) used clinically for the treatment of vitamin D deficiency versus a low dose of vitamin D3 used for supplementation (1,000 IU…
- Trial name
- NCT01784029
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 183 people, healthy volunteers welcome
- Sponsor
- Montefiore Medical Center
Vitamin D Deficiency
Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their Infants
The purpose of this research study is to compare the effects of higher dose vitamin D with commonly recommended dose in pregnant women to see which is better in achieving and/or maintaining sufficient vitamin D blood levels…
- Trial name
- PA 03-103 (NCT00610688)
- Testing
- Prenatal Vitamin, Cholecalciferol (Vitamin D3)
- Where
- 2 sites in United States, United Arab Emirates
- Volunteers
- 192 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Obesity, Vitamin D Deficiency
Vitamin D Supplementation Reduces Renin-Angiotensin System Activity in Obesity
Hypothesis: Vitamin D supplementation lower renin-angiotensin system activity in obesity. Specific Aim: To investigate whether Vitamin D supplementation in obesity improves the vascular sensitivity to angiotensin II.
- Conditions
- Obesity, Vitamin D Deficiency, Hypertension
- Trial name
- NCT01068418
- Testing
- Vitamin D (cholecalciferol)
- Where
- United States
- Volunteers
- 26 people
- Sponsor
- Brigham and Women's Hospital
Human Immunodeficiency Virus (HIV), Vitamin D Deficiency
Study of Vitamin D and Effect on Heart Disease and Insulin Resistance
The purpose of this study is to evaluate how Vitamin D affects endothelial function, inflammation, lipids, insulin resistance, vitamin D levels, and parathyroid hormone (PTH).
- Conditions
- Human Immunodeficiency Virus (HIV), Vitamin D Deficiency, HIV Infections
- Trial name
- NCT01093417
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 45 people
- Sponsor
- University Hospitals Cleveland Medical Center
Vitamin D Deficiency, Nutritional Deficiency
Mothers' Own Milk Optimization for Preterm Infants Project (MoMO PIP) Pilot Study
The overall goal of this study is to assess maternal vitamin D status along with diet, and milk composition, and in turn, to evaluate if infant vitamin D status can be improved with increased maternal supplementation and diet…
- Trial name
- MoMO PIP (NCT04629534)
- Testing
- High dose Cholecalciferol, Cholecalciferol
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Medical University of South Carolina