Clinical trials: Vitamin Deficiencies
Vitamin B12 Deficiency, Renal Failure , Chronic
Oral Versus Intravenous Vitamin B12 Replacement in Hemodialysis Patients
The goal of this clinical trial is to learn whether intravenous (IV) vitamin B12 works better than oral vitamin B12 to correct vitamin B12 deficiency in adults on maintenance hemodialysis.
- Conditions
- Vitamin B12 Deficiency, Renal Failure , Chronic, Renal Dialysis
- Trial name
- B12-HD-RCT (NCT07781020)
- Testing
- Mecobalamin IV Injection, Mecobalamin Tablets
- Where
- Pakistan
- Volunteers
- 60 people
- Sponsor
- Jinnah Hospital
Deficiencies Micronutrient, Nutrition Disorders
Effect of Consuming Vitamin A-fortified Sugar on Serum Retinol Levels in Children
The increase in vitamin A deficiency (<20 mcg/dL) among children under five in Colombia (2010-2015) is a public health problem (27.3%).
- Trial name
- NCT07860060
- Testing
- white sugar fortified with retinol, refined white sugar for culinary use
- Where
- Colombia
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Universidad del Valle, Colombia
Hypovitaminosis D
Vitamin D Insufficiency inVestigation Among hospitaLizeD Inpatients
Hypovitaminosis D is common in the adult population, it affects at least 1 billion people worldwide, and in particular 80% of the French population according to the National Institute for Public Health Surveillance.
- Trial name
- VIVALDI (NCT05214040)
- Volunteers
- 300,000 people
- Sponsor
- University Hospital, Angers
Crohn's Disease, Vitamin D Deficiency
Exploring the Effects of Vitamin D Supplementation on the Chronic Course of Patients With Crohn's Disease With Vitamin D Deficiency
Aims:Prospectively observe the effects of Vitamin D drops supplementation on the chronic course of Crohn's disease patients, analyze whether the effect of Vitamin D drops on CD patients is affected by factors such as disease…
- Conditions
- Crohn's Disease, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT04308850
- Testing
- Vitamin D drops
- Where
- China
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Polycystic Ovary Syndrome, Insulin Resistance
Is There Association Between Vitamin D Levels And Insulin Resistance In Polycystic Ovary Syndrome?
The primary aim of the current study is to clarify whether serum vitamin D levels [25(OH)D3] have a temporal association with insulin resistance and/or insulin sensitivity in PCOS women versus healthy ones.
- Conditions
- Polycystic Ovary Syndrome, Insulin Resistance, Vitamin D Deficiency
- Trial name
- NCT02803476
- Where
- Egypt
- Volunteers
- 166 people, healthy volunteers welcome
- Sponsor
- Ain Shams Maternity Hospital
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
Hypovitaminosis D
Cholecalciferol and Calcifediol Are Both Useful to Improve Vitamin D Serum Levels
Patients with hypovitaminosis D are randomized into three arms of treatment: Group A: Calcifediol 0,266mg each month Group B: Cholecalciferol 25000UI each 15 days Group C: Calcifediol 4 drops per day.
- Trial name
- VITD (NCT06138249)
- Testing
- Vitamin D
- Where
- Italy
- Volunteers
- 90 people
- Sponsor
- Azienda Ospedaliero-Universitaria Consorziale Policlinico di Bari
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
Thiamine Deficiency
Trial of Thiamine Supplementation in Cambodia
Beriberi is a potentially fatal disease caused by vitamin B1 (thiamine) deficiency that still occurs in Southeast Asia despite near eradication elsewhere.
- Trial name
- NCT03616288
- Testing
- thiamine (as thiamine hydrochloride)
- Where
- Cambodia
- Volunteers
- 335 people
- Sponsor
- Mount Saint Vincent University
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
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