Clinical trials: Vitamin Deficiencies
Hypovitaminosis D
Prospective Monocentric Registry of Patients Undergoing Vitamin D Treatment at San Raffaele Hospital
The Endocrinology Unit of the IRCCS San Raffaele Hospital is dedicated to establishing a prospective single-center registry with data from patients undergoing vitamin D supplementation, initiating their first visit to the…
- Trial name
- NCT06481111
- Testing
- supplementary treatment with vitamin D
- Where
- Italy
- Volunteers
- 1,000 people
- Sponsor
- IRCCS San Raffaele
Hypophosphatasia (HPP)
A Retrospective Study of the Natural History of Patients With Severe Perinatal and Infantile Hypophosphatasia (HPP)
This study aims to characterize the natural history of patients with severe perinatal or infantile onset HPP.
- Trial name
- NCT01419028
- Where
- 12 sites in United States, Australia and 5 more
- Volunteers
- 48 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency, Gastrointestinal Diseases
Ultraviolet Light And Vitamin D In Subjects With Fat Malabsorption Or After Gastric Bypass Surgery
Patients with fat malabsorption due to Crohn's disease, ulcerative colitis, or other causes including cystic fibrosis, among others, or who have undergone gastric bypass have increased incidence of vitamin D deficiency relative…
- Trial name
- NCT01910792
- Testing
- Sperti Lamp
- Where
- United States
- Volunteers
- 19 people
- Sponsor
- Boston University
Cardiovascular Disease, Vitamin D Deficiency
Acute Effect of Systemic Stress on Measured Blood Concentrations of 25 (OH) Vitamin D
Each patient who is admitted for preoperative preparation for elective open heart surgery at Intermountain Medical Center will be invited to participate in this study.
- Trial name
- ASSESS-D (NCT02460211)
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 150 people
- Sponsor
- Intermountain Health Care, Inc.
Crohn's Disease (CD), Ulcerative Colitis (UC)
Supplementation of Vitamin D3 in Patients With Inflammatory Bowel Diseases and Hypovitaminosis D
This study aims to evaluate the effect of vitamin D3 supplementation on disease activity and quality of life in IBD patients deficient in vitamin D, and also help determine the optimal dose of vitamin D3 for them.
- Trial name
- NCT01877577
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- University of California, San Francisco
Homocysteine, Coronary Disease
The Relationship Between HHcy and Contrast-induced Nephropathy in Hypertensive Patients After Coronary Artery Diagnosis and Treatment
Contrast-induced nephropathy has become the third-largest cause of hospital acquired acute renal injury, and which morbidity is only less than that of renal hypoperfusion and renal toxicity of drugs, about 11%of all cases.
- Conditions
- Homocysteine, Coronary Disease, Angioplasty,Balloon,Coronary, Contrast Media
- Trial name
- CONTRAST-CADT (NCT02575092)
- Testing
- Enalapril Maleate Tablets(as the program-based antihypertension), Enalapril Maleate and Folic Acid tablets(as the program-based antihypertension)
- Where
- China
- Volunteers
- 4,000 people
- Sponsor
- Fuling Central Hospital of Chongqing City
Overweight and Obesity, Overweight Adolescents
Efficacy of Oral Vitamin D Supplementation in Adolescents and Young Adults.
This study assesses whether oral supplementation with vitamin D contributes to the reduction of body mass index and lipid profile in adolescents and young adults.
- Conditions
- Overweight and Obesity, Overweight Adolescents, Vitamin D Deficiency
- Trial name
- SIMBAIII (NCT04377386)
- Testing
- 1000 IU D vitamin, 200 IU D vitamin
- Where
- Colombia
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Fundación Cardiovascular de Colombia
Vitamin B 12 Deficiency
The Impact of Vitamin B12 Deficiency on Infant Gut Microbiota
Vitamin B12 plays important roles in DNA synthesis and neurological functions. Vitamin B12 deficiency is one of the most common micronutrient deficiencies and it has become increasingly more frequent in infants.
- Trial name
- NCT03365583
- Where
- Turkey (Türkiye)
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Marmara University
Chronic Kidney Disease Mineral and Bone Disorder
Calcium Balance Studies in Children With CKD and on Dialysis
This is a novel, non-invasive method of assessing Ca balance by natural Ca isotope fractionation.
- Trial name
- Cal-Bal (NCT03285854)
- Testing
- Collection of blood, urine and stool samples
- Where
- United Kingdom
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Great Ormond Street Hospital for Children NHS Foundation Trust
Covid-19, Respiratory Distress Syndrome
Vitamin D Supplementation and Clinical Outcomes in Severe COVID-19 Patients
Single center, open label randomized clinical trial. Study location: tertiary hospital center (University Hospital Split, Croatia).
- Conditions
- Covid-19, Respiratory Distress Syndrome, Vitamin D Deficiency
- Trial name
- NCT05384574
- Testing
- cholecalciferol
- Where
- Croatia
- Volunteers
- 200 people
- Sponsor
- University Hospital of Split
Asthma, Vitamin D Resistant Rickets
Assessment Of Vitamin D Role In The Pathogenesis Of Asthma In Vitamin D Resistent Patients
Research Title: Evaluation of airway reactivity, allergy and inflammatory mediators in exhaled breath condensate in vitamin D resistant rickets.
- Trial name
- NCT01578824
- Testing
- Methacholine Challenge Test
- Where
- Israel
- Volunteers
- 26 people, healthy volunteers welcome
- Sponsor
- Rambam Health Care Campus
Vitamin A Deficiency, HIV
Single-dose Postpartum Vitamin A Supplementation of Mothers and Neonates
The ZVITAMBO PROJECT is testing whether giving mothers and infants a single large dose of vitamin A during the immediate post partum period will reduce: 1.
- Trial name
- ZVITAMBO (NCT00198718)
- Testing
- Vitamin A (retinyl palmitate)
- Volunteers
- 28,220 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins Bloomberg School of Public Health
Vitamin D Deficiency
The Effect of Maternal and Neonatal Vitamin D Levels on Respiratory Distress Syndrome in Preterm Infants
Respiratory distress syndrome (RDS) of the newborn, also called as hyaline membrane disease, is the most common cause of respiratory distress in premature infants, correlating with structural and functional lung immaturity.
- Trial name
- NCT02024490
- Where
- Turkey (Türkiye)
- Volunteers
- 100 people
- Sponsor
- Kanuni Sultan Suleyman Training and Research Hospital
Deficiency, Vitamin D, Elderly, Frail
The Effect of Calcifediol (Hy.D 25 SD/S) and Vitamin D3 on Muscle Strength in a Frail Elderly Population
In an ageing population, the need for interventions to help older people remain healthy, active and independent for as long as possible, increases.
- Trial name
- D-Fit (NCT02349282)
- Testing
- Calcifediol 10ug/day, Vitamin D3 20ug/day
- Where
- Netherlands
- Volunteers
- 78 people, healthy volunteers welcome
- Sponsor
- Wageningen University
Type 2 Diabetes, Vitamin D Deficiency
African American Children, Glycemic Control, and Type 2 Diabetes
Using a randomized, placebo-controlled trial design in subjects with vitamin D deficiency, the investigators propose to determine if vitamin D treatment improves glycemic control in vitamin D deficient subjects with T2DM.
- Trial name
- ACT (NCT01325987)
- Testing
- Vitamin D2, Sugar pill
- Where
- United States
- Volunteers
- 31 people
- Sponsor
- University of Alabama at Birmingham
Vitamin D Deficiency
Vitamin D Dose-Response Study to Establish Dietary Requirements in Infants
The research team is comprised of an expert nutrition scientist and a pediatrician with expertise in endocrinology. Both have world-class experience in assessing bone mass in infancy.
- Trial name
- NCT00381914
- Testing
- Vitamin D
- Where
- Canada
- Volunteers
- 132 people, healthy volunteers welcome
- Sponsor
- McGill University
Vitamin D Deficiency
Does Supplementing Vitamin D Deficiency Affect Fusion Healing Rates in Elective Foot and Ankle Surgery?
To assess if vitamin D status in the elective foot and ankle fusion population affects fusion healing categorically (fused vs. un-fused).
- Trial name
- NCT04450199
- Testing
- Vitamin D2
- Where
- United States
- Volunteers
- 25 people
- Sponsor
- Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute)
Vitamin D Deficiency
Vitamin D Supplementation in Pediatrics. Oral or Parenteral! D2 or D3
A study will be performed on Vitamin D deficient/ insufficient Egyptian children to compare the efficacy of oral and parenteral forms of Ergocalciferol and cholecalciferol in raising serum 25(OH) D levels in these subjects
- Trial name
- NCT06176157
- Testing
- vitamin D2, vitamin D3
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Ain Shams University
Calcium and Vitamin D Deficiencies
Calcichew D3 Preference Study in Participants Eligible for Calcium and Vitamin D Supplementation.
The purpose of this study is to compare the preference of Calcichew D3 500/400 (containing 500 mg calcium and 400 IU of vitamin D) with Adcal-D3 600/400 (containing 600 mg of calcium and 400 IU of vitamin D) in Test Group 1, and…
- Trial name
- NCT02457247
- Testing
- Calcichew D3, Adcal-D3, Kalcipos-D
- Where
- 9 sites in Germany, United Kingdom
- Volunteers
- 276 people
- Sponsor
- Takeda
Osteomalacia
Cinacalcet for Fibroblast Growth Factor 23 (FGF23)-Mediated Hypophosphatemia (Hypophosphatemic Rickets)
Background: Hypophosphatemia is a condition where a person has low levels of phosphorus in the blood. Low blood phosphorus can cause muscle and bone weakness (such as rickets) and teeth problems.
- Trial name
- NCT01748812
- Testing
- Osteomalacia
- Where
- United States
- Volunteers
- 1 people
- Sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
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