Clinical trials: Vitamin D Deficiency, completed
Craniocerebral Trauma, Intracranial Aneurysm
Hypovitaminosis D in Neurocritical Patients
Vitamin D has been shown to impact prognosis in a variety of retrospective and randomized clinical trials within an intensive care unit (ICU) environment.
- Conditions
- Craniocerebral Trauma, Intracranial Aneurysm, Brain Neoplasms, Spinal Cord Injuries
- Trial name
- NCT02881957
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 274 people
- Sponsor
- University of Utah
Breast Cancer, Obesity
Vitamin D, Diet and Activity Study
Experimental and human data suggests that vitamin D could protect against breast cancer. Overweight/obese individuals are at increased risk of low vitamin D levels.
- Conditions
- Breast Cancer, Obesity, Hypovitaminosis D
- Trial name
- ViDA (NCT01240213)
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 218 people, healthy volunteers welcome
- Sponsor
- Fred Hutchinson Cancer Center
Vitamin D-deficient, Insulin-resistant
Role of Vitamin D in the Prevention and Treatment of Diseases Associated With Insulin Resistance
Prospective, randomized and placebo-controlled 6-month trial of vitamin D supplementation in 130 Caucasian and vitamin D-deficient men and women aged 25 years and over.
- Trial name
- VIDIR (NCT01779908)
- Testing
- Vitamin D
- Where
- Canada
- Volunteers
- 96 people
- Sponsor
- CHU de Quebec-Universite Laval
Vitamin D Deficiency
Comparing Different Amounts of Vitamin D Supplementation to Preschool Children Living in Northern and Southern Sweden
Vitamin D has a range of biological effects of public health relevance. Vitamin D status is assessed on levels of its metabolite 25-hydroxyvitamin D [25(OH)D], where levels < 50 nmol/L indicate insufficiency.
- Trial name
- Dvisum (NCT01741324)
- Testing
- Vitamin D 25 microg/d, Vitamin D 10 microg/d, No extra vitamin D
- Where
- 2 sites in Sweden
- Volunteers
- 220 people, healthy volunteers welcome
- Sponsor
- Umeå University
Cystic Fibrosis
Comparison of Absorption of Vitamin D in Cystic Fibrosis
The investigators predict that a powder pill form of vitamin D will be more effectively absorbed than an oil form of vitamin D in people diagnosed with Cystic Fibrosis.
- Trial name
- NCT01880346
- Testing
- Vitamin D Powder, Vitamin D Oil
- Where
- United States
- Volunteers
- 17 people
- Sponsor
- Emory University
Cardiovascular Diseases, Vitamin D Deficiency
The Effect of Vitamin D Statues on Endothelial Function
In the United States, cardiovascular disease causes over one-third of all deaths and vitamin D deficiency is an epidemic. An increasing body of data suggests that low vitamin D status adversely impacts the cardiovascular system.
- Trial name
- CVD Cookie (NCT01049048)
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Rotator Cuff Tear Arthropathy, Osteoporosis
COMPREHENSIVE® REVERSE SHOULDER Mini BasePlate
Evaluate Survivorship for the Biomet® Comprehensive® Reverse Shoulder Mini Baseplate.
- Conditions
- Rotator Cuff Tear Arthropathy, Osteoporosis, Osteomalacia, Joint; Destruction, Sacroiliac
- Trial name
- NCT02084693
- Testing
- COMPREHENSIVE
- Where
- 5 sites in South Korea
- Volunteers
- 100 people
- Sponsor
- Zimmer Biomet
Vitamin D Deficiency, Osteopenia
Monitored vs Standard Supplementation of Vitamin D in Preterm Infants
The purpose of this study is to determine wheather the monitored vitamin D (vit D) therapy is safer and more effective than standard therapy in pretrem infants.
- Conditions
- Vitamin D Deficiency, Osteopenia, Nephrolithiasis, Drug Overdose
- Trial name
- MOSVID (NCT03087149)
- Testing
- monitored vit D supplementation, standard vit D supplementation
- Where
- Poland
- Volunteers
- 109 people
- Sponsor
- Princess Anna Mazowiecka Hospital, Warsaw, Poland
Hypophosphatemia, X-linked Hypophosphatemia
FGF23 and Angiotensin-(1-7) in Hypophosphatemia (GAP)
Hereditary hypophosphatemia encompasses rare genetic conditions characterized by renal phosphate wasting. Increased circulating levels of fibroblast growth factor 23 (FGF23), a key regulator of phosphorus metabolism, are critical…
- Conditions
- Hypophosphatemia, X-linked Hypophosphatemia, Renin-angiotensin System, Left Ventricular Hypertrophy
- Trial name
- GAP (NCT03489993)
- Testing
- Ang II and Ang-(1-7), FGF23 and klotho
- Where
- United States
- Volunteers
- 8 people
- Sponsor
- Wake Forest University Health Sciences
Vitamin D Deficiency
Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D Daily Supplements on Active Periodontal Therapy With Stage II Grade B Periodontitis Patients
Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D daily Supplements on Active Periodontal Therapy with Stage II Grade B Periodontitis Patients: A Randomized controlled clinical trial.
- Trial name
- NCT06654063
- Testing
- non-surgical periodontal therapy (SRP), non-surgical periodontal therapy (SRP)+ Omega-3, non-surgical periodontal therapy (SRP)+ Vitamin D
- Where
- Egypt
- Volunteers
- 72 people, healthy volunteers welcome
- Sponsor
- Cairo University
Hypercholesterolemia, Vitamin D Deficiency
Effects of Vitamin D on Lipids
The purpose of this study is to examine whether oral vitamin D supplementation in people with inadequate vitamin D concentrations will lower LDL-cholesterol and total cholesterol concentrations.
- Trial name
- NCT00723385
- Testing
- Vitamin D (1000 or 2000 IU/day)
- Where
- United States
- Volunteers
- 130 people, healthy volunteers welcome
- Sponsor
- University of California, San Francisco
Obesity, Vitamin D Deficiency
Efficacy of Vitamin D Supplementation in Bariatric Surgery Patients
As the use of bariatric surgery for treatment of extreme obesity adults continues to rise, clinicians must be aware of pre-existing nutritional deficiencies in overweight and obese patients.
- Trial name
- NCT01385098
- Testing
- Vitamin D3 and Calcium
- Where
- United States
- Volunteers
- 37 people, healthy volunteers welcome
- Sponsor
- Vadim Sherman, MD
Insulin Resistance
Vitamin D Supplementation and Glycemic Outcomes
The investigators examined the effect of vitamin D supplementation on glucose homeostasis and metabolic markers in healthy normal weight and overweight young subjects and healthy normal-weight and overweight elderly subjects…
- Trial name
- NCT02942732
- Testing
- cholecalciferol (Euro-Pharm International, Canada)
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Université d'Auvergne
Infertility, Female, Infertility
Vitamin D and Polycystic Ovarian Syndrome (PCOS)
Primary Objectives: To evaluate the efficacy of metformin and Vitamin D supplementation on serum insulin and serum androgen levels (Total testosterone, Steroid Hormone Binding Globulin, Free Androgen Index) levels compared…
- Conditions
- Infertility, Female, Infertility, Vitamin D Deficiency
- Trial name
- NCT03989778
- Testing
- Vitamin D
- Where
- 2 sites in Pakistan
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Aga Khan University
Pancreatitis, Chronic
Prospective Study of Efficacy of Intra-muscular Vitamin D3 in Tropical Calcific Pancreatitis
The purpose of this study is to determine the efficacy of 2 different doses of intramuscular (IM) vitamin D3 as compared to an oral replacement dose in normalizing vitamin D levels in the blood of patients with tropical calcific…
- Trial name
- NCT00956839
- Testing
- Vitamin D3 (Cholecalciferol)
- Where
- India
- Volunteers
- 40 people
- Sponsor
- Sanjay Gandhi Postgraduate Institute of Medical Sciences
Vitamin D Insufficiency, Vitamin D Deficiency
Vitamin D Levels and Vitamin D Education in Geriatric Patients
Vitamin D is important to maintain good health. Although it is found in foods and vitamins, many people still have low vitamin D levels.
- Trial name
- NCT00273611
- Testing
- Pharmacist Education about Vitamin D
- Where
- United States
- Volunteers
- 80 people
- Sponsor
- University of Colorado, Denver
Vitamin D Deficiency, Overweight
Vitamin D Supplement Study for Adolescents
The purpose of this study is to determine if 14-19 year old African American adolescents are able to take a daily vitamin D supplement daily for about 4 months and how well a daily dose of 400 IU or 2000 IU vitamin D supplement…
- Conditions
- Vitamin D Deficiency, Overweight, Obesity
- Trial name
- VIP (NCT00909454)
- Testing
- 2000 IU Vitamin D3 daily supplement, 400 IU Vitamin D3 supplement
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Augusta University
Acute Myeloid Leukemia, Vitamin D Deficiency
Vitamin D Effect on A Disintegrin-like And Metalloprotease Thrombospondin1 Motif 13& Interleukin 6 in Leukemia
A Disintegrin-like And Metalloprotease with Thrombospondin type 1 motif 13 (ADAMTS13) deficiency was incriminated in poor prognosis, high probability of serious complications and mortality in acute myeloid leukemia (AML)…
- Conditions
- Acute Myeloid Leukemia, Vitamin D Deficiency, ADAMTS13, Interleukin 6
- Trial name
- NCT05149339
- Testing
- Cholecalciferol 2800 I.U. ml oral drops
- Where
- Egypt
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- Zagazig University
Vitamin D3 Deficiency
Human Intervention Study to Increase 25-hydroxyvitamin D Levels
The interventional study will evaluate effectiveness and potential of a regularly consumption of wheat germ oil (UV treated) vs. wheat germ oil (UV untreated) to increase plasma vitamin D levels ín humans.
- Trial name
- WeKo (NCT03499327)
- Testing
- Wheat germ oil (UV treated), Wheat germ oil (untreated)
- Where
- Germany
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Jena
Vitamin D Deficiency
A Prospective, Multi-center Study to Evaluate the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in Adults With Vitamin D Deficiency
To compare the efficacy of Vitamin D3 B.O.N. Intramuscular Injection within 12 weeks with that of placebo in adults with Vitamin D Deficiency.
- Trial name
- NCT02443246
- Testing
- Vitamin D3 B.O.N. Injection (cholecalciferol 200,000IU)
- Volunteers
- 84 people
- Sponsor
- Kwang Dong Pharmaceutical co., ltd.