Clinical trials: Vitamin D Deficiency, completed
Vitamin D Deficiency
Effects of Vitamin D Dose and Genotype of the Binding Protein in Infants and Children
The purpose of this study is to determine if the vitamin D binding protein genotype influences circulating vitamin D levels and if it may have functional consequences on vitamin D activity.
- Trial name
- VitaD (NCT01050387)
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 193 people, healthy volunteers welcome
- Sponsor
- Yale University
Asthma, Bronchial
Efficacy of Calcifediol Supplementation in Asthma Control in Asthmatic Patients With Vitamin D Deficiency (ACViD)
Introduction: There are many cross-sectional studies in children and adults indicating that low vitamin D levels in asthmatic patients are correlated with poorer asthma control, poorer lung function, decreased response to…
- Trial name
- ACViD (NCT02805907)
- Testing
- Calcifediol
- Where
- Spain
- Volunteers
- 112 people
- Sponsor
- MurciaSalud
Acute Respiratory Distress Syndrome, Vitamin D Deficiency
Vitamin D to Improve Outcomes by Leveraging Early Treatment
Vitamin D deficiency is a common, potentially reversible contributor to morbidity and mortality among critically ill patients. We conducted a randomized, double-blind, placebo-controlled, phase 3 trial of early vitamin D3…
- Conditions
- Acute Respiratory Distress Syndrome, Vitamin D Deficiency, Critical Illness
- Trial name
- VIOLET (NCT03096314)
- Testing
- Vitamin D3
- Where
- 47 sites in United States
- Volunteers
- 1,358 people
- Sponsor
- Massachusetts General Hospital
Vitamin D Deficiency
Vitamin D Absorbance Study - Clinical Trial of the Absorbance of Nano Liquid D3
Vitamin D is a commonly available essential prohormone humans need to regulate blood calcium and has recently emerged as potentially helpful in combating severe COVID-19.
- Trial name
- ViDAS (NCT04885803)
- Testing
- Softgel Vitamin D3, Nano Liquid Vitamin D3, 25(OH)D Blood Serum Test
- Where
- United States
- Volunteers
- 114 people, healthy volunteers welcome
- Sponsor
- Inspired Life Medical, Inc.
Vitamin D Deficiency
Sunlight Exposures Effect on Serum Vitamin D Levels
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
- NCT00473317
- Testing
- Sun Exposure
- Where
- United States
- Volunteers
- 6 people, healthy volunteers welcome
- Sponsor
- Creighton University
Vitamin D Deficiency
Different Vitamin D Preparations & FGF23 in Humans
Fibroblast growth factor 23 (FGF23) is a new hormone which controls phosphate and vitamin D levels in humans. Excess FGF23 is associated with an increased risk of death in patients with chronic kidney disease.
- Trial name
- NCT00957879
- Testing
- Ergocalciferol, Calcitriol
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Musculoskeletal Disease Other, Isotretinoin Adverse Reaction
Relationship Between Serum Vitamin D Levels and Musculoskeletal Adverse Effects in Patients Using Isotretinoin
Isotretinoin (ISO) has been used in the treatment of patients with severe acne vulgaris (AV) that is resistant to standard therapy with systemic antibiotics and topical agents, over the last few decades.
- Conditions
- Musculoskeletal Disease Other, Isotretinoin Adverse Reaction, Vitamin D Deficiency
- Trial name
- NCT04204304
- Testing
- Isotretinoin
- Where
- Turkey (Türkiye)
- Volunteers
- 177 people, healthy volunteers welcome
- Sponsor
- Ankara Training and Research Hospital
Diabetes Mellitus Type 2, Vitamin D Deficiency
Vitamin D Supplementation in Patients With Diabetes Mellitus Type 2
Background and Objectives : The presence of vitamin D deficiency in patients with type 2 diabetes mellitus (T2DM) is associated with an increased risk of cardiovascular disease (CVD).
- Trial name
- DIMENSION (NCT01741181)
- Testing
- Vitamin D supplementation
- Where
- Singapore
- Volunteers
- 64 people
- Sponsor
- Tan Tock Seng Hospital
Vitamin D Deficiency, Hemodialysis Patient
Cholecalciferol Supplementation Effect on Parathyroid Hormone in Hemodialysis Patients
Introduction. Vitamin D regulates mineral metabolism. Its deficiency has been associated with diabetes, cancer and increased mortality. 25OH vitamin D (25VD) is stable and suitable for the evaluation of vitamin D sufficiency.
- Trial name
- NCT03648528
- Testing
- cholecalciferol
- Volunteers
- 120 people
- Sponsor
- Cooperativa Asistencia Sindicato Médico Uruguay
Vitamin D Deficiency, Cardiomyopathies
Can Vitamin D Reduce Heart Muscle Damage After Bypass Surgery?
Background and study aim: Heart diseases are among the most common causes of death worldwide. A large proportion of deaths are caused by heart attacks (myocardial infarction), where blood flow to the heart is reduced resulting in…
- Conditions
- Vitamin D Deficiency, Cardiomyopathies, Apoptosis, Inflammation
- Trial name
- NCT04323852
- Testing
- Vitamin D
- Where
- Iran
- Volunteers
- 70 people
- Sponsor
- Shahid Beheshti University of Medical Sciences
Methicillin Resistant Staphylococcus Aureus, Vitamin D3 Deficiency
Efficacy Study of Vitamin D Supplementation to Meticillin Resistant Staphylococcus Aureus (MRSA) Carriers
The purpose of this study is to treat persistent MRSA carriers with vitamin D supplementation during a 12 month to see if the number of MRSA positive patients can be reduced.
- Trial name
- D-STAPH (NCT02178488)
- Testing
- Cholecalciferol
- Where
- 2 sites in Sweden
- Volunteers
- 60 people
- Sponsor
- Peter Bergman
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
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
Nocturnal Enuresis, Vitamin D Deficiency
Vitamin D Versus Desmopressin Versus Combination Therapy in Children With Primary Monosymptomatic Nocturnal Enuresis and Vitamin D Deficiency
This randomized clinical trial evaluated three treatment approaches for children aged 6 to 12 years who had primary monosymptomatic nocturnal enuresis (night-time bedwetting) and confirmed vitamin D deficiency.
- Trial name
- NCT07292753
- Testing
- Vitamin D, Desmopressin
- Where
- Egypt
- Volunteers
- 90 people
- Sponsor
- Ain Shams University
Vitamin C Deficiency, Vitamin D Deficiency
Vitamin Deficiency and Blood Pressure in Hospitalized Jewish General Hospital (JGH) Patients
There is suggestive evidence that vitamin C and vitamin D deficiency may increase blood pressure across the range of blood pressures from normal to elevated.
- Trial name
- NCT00921622
- Testing
- Vitamin D, Vitamin C
- Where
- Canada
- Volunteers
- 50 people
- Sponsor
- Jewish General Hospital
Deficiency of Vitamin D3
Study on the Effects of a Recommendation Based Supply of Vitamin D3 in Healthy Volunteers
The aim of this study is to investigate whether a supplementation of 20 µg Vitamin D3 per day for 12 weeks can be used to normalize vitamin d-Status
- Trial name
- NCT01711905
- Testing
- Vitamin D3
- Where
- Germany
- Volunteers
- 107 people, healthy volunteers welcome
- Sponsor
- Martin-Luther-Universität Halle-Wittenberg
Type 2 Diabetes Mellitus, Vitamin D Deficiency
Effect of Vitamin D Supplementation on Glucose Tolerance in Subjects at Risk for Diabetes With Low Vitamin D.
Type 2 diabetes (T2D) is an increasingly common and serious condition. Studies show that low vitamin D levels are associated with increased diabetes risk and that vitamin D may protect against diabetes by reducing chronic…
- Trial name
- EVIDENCE (NCT01726777)
- Testing
- Control, Vitamin D
- Where
- 3 sites in Canada
- Volunteers
- 71 people
- Sponsor
- University of Toronto
Vitamin D Deficiency
Efficacy of Vitamin D Therapy on Glucose Homeostasis in Obese Adolescents
The purpose of this study is to see whether giving a Vitamin D supplement to vitamin D deficient obese children and adolescents will decrease the risk of getting diabetes (Disease in which the person has high blood sugar).
- Trial name
- NCT02414529
- Testing
- Vitamin D2
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- NYU Langone Health
Rickets, Osteomalacia
Maternal and Infant Vitamin Status During the First Nine Months of Infant Life
In this study the investigators wanted to assess vitamin D status and possible consequences of low plasma 25-hydroxyvitamin D levels in a population of healthy mothers and their infants, in the community of Aarhus, Denmark.
- Conditions
- Rickets, Osteomalacia, Osteoporosis
- Trial name
- NCT02548520
- Testing
- Blood and breastmilk samples
- Where
- Denmark
- Volunteers
- 107 people, healthy volunteers welcome
- Sponsor
- University of Aarhus
MASLD (Metabolic Dysfunction-Associated Steatotic Liver Disease), Mediterranean Diet
Identification and Characterization of At-risk MASLD in Turkish Adults
MASLD is with 25% the most prevalent liver disorder in Western society and is associated with overweight, obesity, metabolic syndrome (MetS), type 2 diabetes mellitus (T2DM) and cardiovascular diseases (CVD).
- Conditions
- MASLD (Metabolic Dysfunction-Associated Steatotic Liver Disease), Mediterranean Diet, Lifestyle (Sedentary Behavior and Physical Activity), Vitamin D Deficiency
- Trial name
- NCT07548970
- Where
- Turkey (Türkiye)
- Volunteers
- 459 people, healthy volunteers welcome
- Sponsor
- Maastricht University Medical Center