Clinical trials: Vitamin Deficiencies
Hypophosphatemic Rickets, X Linked Dominant
Calcitonin for Treating X-linked Hypophosphatemia
X-linked hypophosphatemia (XLH) is the most common form of inherited rickets in the United States. It also causes bone disease in adults.
- Trial name
- NCT01652573
- Testing
- nasal salmon calcitonin
- Where
- United States
- Volunteers
- 21 people
- Sponsor
- Yale University
Heart Failure, Vitamin D Deficiency
Effect of Vitamin D Supplementation in Patients With Heart Failure and Vitamin D Deficiency
The purpose of this study is to determine the effects of vitamin D supplementation in patients with heart failure and vitamin D deficiency on ventricular function, inflammatory cytokines, brain natriuretic peptide, lipid profile…
- Trial name
- NCT02087683
- Testing
- Vitamin D Supplementation
- Where
- Mexico
- Volunteers
- 60 people
- Sponsor
- Instituto Tecnologico y de Estudios Superiores de Monterey
Vitamin D Deficiency
Vitamin D and Muscle Strength and Surface (Electromyography) EMG
Vitamin D deficiency is widely prevalent in India. Serum 25(OH)D levels are <20 ng /ml in up to 90% of them. Recently, in a randomized control trial, investigators have shown that dual cholecalciferol and calcium supplementation…
- Trial name
- NCT01190683
- Testing
- Cholecalciferol, Calcium Carbonate, cholecalciferol and calcium carbonate
- Volunteers
- 170 people, healthy volunteers welcome
- Sponsor
- Indian Council of Medical Research
Sarcopenia, Chronic Kidney Diseases
Sarcopenia, Fall and Osteoporosis in Chronic Kidney Disease
This study is a cross-sectional study that wishes to investigate whether there is an increased incidence of sarcopenia in patients with chronic kidney disease compared to the Danish background population.
- Conditions
- Sarcopenia, Chronic Kidney Diseases, Osteoporosis
- Trial name
- NCT04515342
- Testing
- DXA, Muscle strength and function assessment, Blood samples
- Where
- 2 sites in Denmark
- Volunteers
- 140 people
- Sponsor
- Herlev Hospital
Bariatric Surgery Candidate
Efficacy of a Novel Multivitamin-Mineral Supplement in Preventing Vitamin Deficiency in Postoperative Bariatric Patients
Approximately 33% of the US adult population can be classified as obese based on body mass index. This epidemic of obesity has resulted in over 200,000 bariatric surgeries performed every year for the treatment of "clinically…
- Trial name
- NCT01475617
- Testing
- AquaVanta Chewable Tablet, Flinstones Complete, Nature Made Calcium Softgels
- Where
- United States
- Volunteers
- 61 people
- Sponsor
- Yasoo Health
Peritoneal Dialysis-associated Peritonitis, Vitamin D Deficiency
The Effects of Oral Vitamin D Supplementation on the Prevention of Peritoneal Dialysis-related Peritonitis
This is a pilot randomized, controlled trial of Vitamin D supplementation in patients on peritoneal dialysis to determine the feasibility of a future full-scale RCT exploring if oral administration of vitamin D3 could reduce the…
- Trial name
- NCT03264625
- Testing
- Cholecalciferol (2000iu qd), Routine therapy for PD
- Where
- China
- Volunteers
- 60 people
- Sponsor
- Peking University First Hospital
Obesity, Vitamin D Deficiency
The Effect of Weight on Vitamin D Dose Response
Vitamin D3 is a vitamin that is an essential component of biological regulating systems in humans. Sun exposure is the predominant source of vitamin D3. Previous research has shown that vitamin D3 deficiency is common worldwide.
- Trial name
- Weight (NCT01013584)
- Testing
- cholecalciferol
- Where
- United States
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Creighton University
Rheumatoid Arthritis, Hypovitaminosis D
Treatment of Hypovitaminosis D in Rheumatoid Arthritis
This study recruits individuals with rheumatoid arthritis (RA) and low vitamin D concentrations. Subjects are dosed with vitamin D or placebo for one year.
- Trial name
- NCT00423358
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 22 people
- Sponsor
- University of Wisconsin, Madison
Vitamin B12 Deficiency
Can Recombinant Human Intrinsic Factor Be Used for Evaluation of the Vitamin B12 Absorption?
Vitamin B12 is an essential nutrient for normal DNA-synthesis and must be supplied by animal products. Vitamin B12 deficiency may cause anemia and irreverible neurological damage.
- Trial name
- NCT00279552
- Testing
- Recombinant human intrinsic factor
- Where
- Denmark
- Volunteers
- 37 people
- Sponsor
- University of Aarhus
CKD-MBD - Chronic Kidney Disease Mineral and Bone Disorder, Secondary Hyperparathyroidism
The Longitudinal PTH-Study
The main study aim is to quantify the agreement between the analytical results provided by two third generation and two second generation Parathyroid hormone (PTH) assays.
- Conditions
- CKD-MBD - Chronic Kidney Disease Mineral and Bone Disorder, Secondary Hyperparathyroidism, Kidney Replacement
- Trial name
- NCT03464149
- Testing
- One armed study, blood from each patient is analysed by four assays ( two 3rd generation and two 2nd generation assays)
- Where
- Austria
- Volunteers
- 132 people
- Sponsor
- Medical University of Vienna
Asthma-COPD Overlap Syndrome, Vitamin D Deficiency
Impact of Vitamin D3 Administration on Cardiac Autonomic Tone in Asthma Chronic Obstructive Pulmonary Disease(COPD) Overlap Patients
Title:Impact of vitamin D administration on cardiac autonomic tone in Asthma Chronic Obstructive Pulmonary Disease (COPD) Overlap patients: A blinded randomized control trial.
- Conditions
- Asthma-COPD Overlap Syndrome, Vitamin D Deficiency, Cardiac Autonomic Tone
- Trial name
- COPD (NCT03773809)
- Testing
- Vitamin D capsule
- Where
- Bangladesh
- Volunteers
- 50 people
- Sponsor
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Vitamin B12 Deficiency
Supplementary Vitamin B12 Effects on Elevated Homocysteine Levels of Vegetarians - Clinical Trial
Vegetarians are known to be deficient in vitamin B12, due to a lack or absence of dietary animal produce, which can elevate homocysteine.
- Trial name
- NCT01661309
- Testing
- Inactive lozenge, Methylcobalamin
- Where
- United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of West London
Hypovitaminosis D
Impact of Hypovitaminosis D on Bone Disease in HIV Infected Patients
To determine the prevalence of hypovitaminosis D in HIV infected patients, and the consequences on secondary hyperparathyroidism, and bone mineral density (BMD).
- Trial name
- PuraVIHta (NCT02351284)
- Testing
- Measurement
- Where
- Spain
- Volunteers
- 300 people
- Sponsor
- Jose L. Casado
Vitamin B12 Deficiency
Vitamin Deficiencies and Suppletion in Morbid Obesity
The purpose of this study is to evaluate the most effective treatment for patients who underwent a Roux-en-Y gastric bypass and developed postoperatively a vitamin B12 deficiency.
- Trial name
- NCT02270749
- Testing
- Hydroxocobalamin, FitForMe vitamin B12
- Where
- Netherlands
- Volunteers
- 50 people
- Sponsor
- Rijnstate Hospital
Folate Deficiency, Iodine Deficiency
Acceptability and Nutritional Impact of Double-fortified Salt Containing Iodine and Folic Acid - Phase 1
The overarching objective of this two-phase project is to assess the effects of fortifying iodized salt with folic acid on improving women's folate status and thereby reduce the risk of neural tube defects (NTDs), which are…
- Conditions
- Folate Deficiency, Iodine Deficiency, Anemia, Macrocytic, Anemia Deficiency
- Trial name
- DFS-IoFA-1 (NCT05792241)
- Where
- Ethiopia
- Volunteers
- 100 people
- Sponsor
- University of California, Davis
Beta-carotene Bioavailability, Vitamin A Deficiency
Effect of SNPs in the BCMO1 Enzyme
Summary: Chronic intake of foods low in vitamin A (retinol) and provitamin A forming an unbalanced diet with little variety is common in young individuals in the United Kingdom (UK) population and can lead to subclinical…
- Trial name
- BETASNP2 (NCT02276014)
- Testing
- Beta-carotene
- Where
- United Kingdom
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- Newcastle-upon-Tyne Hospitals NHS Trust
Vitamin D Deficiency
Environmental Influences on Vitamin D Status
Vitamin D deficiency is a common problem. The principal source of vitamin D for humans is solar exposure, with cutaneous synthesis of vitamin D by photoconversion of 7-dehydrocholesterol in the skin to pre-vitamin D3.
- Trial name
- Alaska/Hawaii (NCT00780247)
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Creighton University
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
Knee Osteoarthritis, Vitamin D Deficiency
Prospective, Assessment of Vitamin D and Calcium Supplementation, Improvement of Nutritional Status and Preoperative Rehabilitation in Patients Before Knee Arthroplasty.
Prospective randomized study of 150 patients qualified for knee arthroplasty between 2015 and 2017. Patients were randomized into 3 groups receiving vitamin D and calcium supplementation, increased protein supply and preoperative…
- Conditions
- Knee Osteoarthritis, Vitamin D Deficiency, Pain, Postoperative, Arthropathy of Knee
- Trial name
- NCT04291833
- Testing
- Intervention group 1, Intervention group 2, Control group 0
- Where
- Poland
- Volunteers
- 150 people
- Sponsor
- Jagiellonian University
Vitamin D Deficiency, Covid19
Baseline Vitamin D Deficiency and COVID-19 Disease Severity
It is known that vitamin D has been found to decrease incidence of viral respiratory infections, as well as have effects on multiple cytokines involved in immunomodulation and the bradykinin/renin-angiotensin system.
- Trial name
- NCT04628000
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Parkview Medical Center
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