Clinical trials: Vitamin Deficiencies
Cardiac Arrest, Shock
Thiamine vs. Placebo to Increase Oxygen Consumption After Cardiac Arrest
This study is to evaluate whether thiamine can increase oxygen consumption and lower lactate in patients who initially survive an in-hospital cardiac arrest.
- Conditions
- Cardiac Arrest, Shock, Lactic Acidosis, Thiamin Deficiency
- Trial name
- NCT02974257
- Testing
- Thiamine
- Where
- United States
- Volunteers
- 41 people
- Sponsor
- Beth Israel Deaconess Medical Center
Vitamin B12 Deficiency
Impact of Vitamin B12 Replacement on Epogen Dosing and Improvement of Quality of Life in Hemodialysis Patients
Vitamin B12 has several important functions in the body, two of which are production of red blood cells and the maintenance of a healthy nervous system. When vitamin B12 is deficient, abnormal red blood cells form.
- Trial name
- NCT01876732
- Testing
- Vitamin B12
- Where
- United States
- Volunteers
- 132 people
- Sponsor
- Northwell Health
Vitamin D Deficiency, Primary Open- Angle Glaucoma
Associations of Vitamin D Deficiency and Vitamin D Receptor Polymorphisms With the Risk of Primary Open-angle Glaucoma
This study investigated whether vitamin D receptor gene polymorphism is altered in primary open-angle glaucoma subjects carrying the risk allele and vitamin D deficiency is an important factor in the development of glaucoma.
- Trial name
- NCT02539745
- Testing
- Vitamin D receptor polymorphic analysis, Serum levels of 1a, 25-Dihydroxyvitamin D3
- Where
- China
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Lv Yingjuan
Deficiency, Vitamin D, Insulin Resistance
Vitamin D Supplementation and and Glycemic Indexes
Age affect insulin sensitivity and the metabolism, and vitamin D status was shown to have a correlation with markers of insulin resistance.
- Trial name
- NCT03478475
- Testing
- cholecalciferol (Euro-Pharm International, Canada)
- Volunteers
- 115 people, healthy volunteers welcome
- Sponsor
- Université d'Auvergne
Vitamin D Deficiency
Alternative Treatments of Vitamin D Deficiency
The purpose of the study is to compare the efficiency of UVB and vitamin D supplementation in treatment of vitamin D deficiency.
- Trial name
- NCT01512537
- Testing
- Narrowband UVB, Vitamin D and calcium
- Where
- Sweden
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Lund University
Vitamin D Deficiency
Bioavailability of Vitamin D Encapsulated in Casein Micelles, Compared to Its Bioavailability in a Synthetic Emulsifier Currently Used for Supplementation and Enrichment.
Background: Vitamin D3 (VD) is an oil soluble vitamin formed in the skin during exposure to UV light. It is essential for bone and calcium metabolism, insulin reactivity, immune system etc.
- Trial name
- VD (NCT01807845)
- Testing
- enriched skimmilk with VD, Skimmilk enriched with VD wherein the VD will be emulsified using Tween 80
- Where
- Israel
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Rambam Health Care Campus
Vitamin D Deficiency, Clomiphene Allergy
Effect of Vitamin D Oral Supplementation in Poly Csytic Ovarian Women Resistant to Clomiphene Citrate
effect of vitamin D oral supplementation in poly csytic ovarian women resistant to clomiphene citrate
- Conditions
- Vitamin D Deficiency, Clomiphene Allergy, Polycystic Ovary Syndrome
- Trial name
- NCT04916925
- Testing
- Vitamin D, Clomid
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- rana alaaeldin aly ibrahim nasr
Nutritional Status, Nutrient Deficiency
Challenges in Achieving Adequate Dietary Status of Women
The aim of the study is to investigate the dietary habits of women of reproductive age (20-49 years). We aim to obtain epidemiological data on the intake and adequacy of key macronutrients and micronutrients, as well as to…
- Conditions
- Nutritional Status, Nutrient Deficiency, Micronutrient Deficiency, Vitamin D Deficiency
- Trial name
- NutriFem (NCT06745817)
- Testing
- Assessement of nutritional status, Dermis density and thickness, Skin elasticity
- Where
- 3 sites in Slovenia
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Institute of Nutrition, Slovenia (Nutris)
Vitamin A Deficiency, Malaria
Assessing Model Parameters for Applying the Retinol Isotope Dilution (RID) Method
For assessing body retinol pools in preschool children, it is recommended that a blood sample is taken 14-21 days after isotope dosing. During this period, dietary intake of vitamin A should be controlled.
- Conditions
- Vitamin A Deficiency, Malaria, Inflammation
- Trial name
- SUPERKID (NCT02996513)
- Testing
- Retinol Isotope Dilution (RID)
- Where
- Nigeria
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Wageningen University
Hypophosphatasia (HPP)
Extension Study of Protocol ENB-006-09 - Study of Asfotase Alfa in Children With Hypophosphatasia (HPP)
This clinical trial studies the long term safety and efficacy of asfotase alfa in children with HPP who completed Study ENB-006-09 (NCT00952484).
- Trial name
- NCT01203826
- Testing
- Asfotase Alfa
- Where
- 2 sites in United States, Canada
- Volunteers
- 12 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency, Central Sensitisation
Central Sensitization in Vitamin D Deficiency
The purpose of this study is to investigate the presence of central sensitization in vitamin D deficiency and its effect on cutaneous silent period, pain, and quality of life.
- Trial name
- NCT03420378
- Testing
- vitamin D
- Where
- Turkey (Türkiye)
- Volunteers
- 51 people
- Sponsor
- Marmara University
HIV Infections, Vitamin A Deficiency
Vitamin A to Reduce HIV in Vaginal Secretions and Prevent Viral Transmission
HIV infected individuals with vitamin A deficiency may be more likely to transmit the virus to others than HIV infected individuals who have normal levels of vitamin A.
- Conditions
- HIV Infections, Vitamin A Deficiency, HIV Seronegativity
- Trial name
- NCT00053612
- Testing
- Vitamin A
- Volunteers
- 400 people
- Sponsor
- National Institute of Allergy and Infectious Diseases (NIAID)
Vitamin C Deficiency, Smoking
The Effect of Vitamin C on Wound Healing In Mandibular Fracture Patients
The goal of this study is to perform a randomized clinical trial to assess the effects of vitamin C versus placebo on wound healing in mandibular fracture patients.
- Conditions
- Vitamin C Deficiency, Smoking, Surgery, Surgery--Complications
- Trial name
- NCT03938584
- Testing
- Vitamin C
- Where
- United States
- Volunteers
- 45 people
- Sponsor
- Hennepin Healthcare Research Institute
Healthy, Vitamin D Deficiency
Can Correction of Low Vitamin D Status in Infancy Program for a Leaner Body Composition?
One in four infants are born with low amounts of vitamin D stored in their body. This study is designed to test whether improving vitamin D status quickly after birth helps infants to build muscle and to normalize growth.
- Conditions
- Healthy, Vitamin D Deficiency, Gestational Diabetes
- Trial name
- NCT02563015
- Testing
- cholecalciferol, Reference 400
- Where
- Canada
- Volunteers
- 139 people, healthy volunteers welcome
- Sponsor
- McGill University
Vitamin D Deficiency
Safety and Bioefficacy of Vitamin D2 and Vitamin D3
The aim of this study is to investigate the bioavailability of vitamin D2 and D3 as measured by the increase of the specific hydroxy forms in serum (25(OH)D2 and 25(OH)D3, respectively, and by total 25(OH)D.
- Trial name
- NCT01503216
- Testing
- cholecalciferol, ergocalciferol
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Ulrike Lehmann
Vitamin D Deficiency
Comparison of Changes in Serum 25(OH)D Concentrations Following Vitamin D Supplementation With Chewable Tablets Versus Pills
This is a 6-month cross-over trial of vitamin D supplementation in 38 healthy men and women aged 18 years and older. The primary aim is to compare the change in serum 25(OH)D concentration following vitamin D supplementation with…
- Trial name
- NCT02158598
- Testing
- Vitamin D chewable tablet supplementation, Vitamin D pill supplementation
- Where
- Canada
- Volunteers
- 38 people, healthy volunteers welcome
- Sponsor
- CHU de Quebec-Universite Laval
Vitamin D Deficiency
Vitamin D and Its Affect on Growth Rates and Bone Mineral Density Until Age 5
Abstract Background: Vitamin D affects a wide variety of functions in the body including regulation of calcium, phosphorus, and bone metabolism.
- Trial name
- VitD (NCT01419821)
- Testing
- Vitamin D
- Where
- Israel
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Meir Medical Center
Polycystic Ovary Syndrome, Healthy
Vitamin D Treatment, Pharmacogenetics and Glucose Metabolism
Background: Polycystic ovary syndrome (PCOS) is as common as 5-10% of all women in Austria. PCOS women frequently present with metabolic disturbances, hyperandrogenism and infertility. New therapy concepts are warranted.
- Conditions
- Polycystic Ovary Syndrome, Healthy, Vitamin D Deficiency
- Trial name
- NCT01721915
- Testing
- Vitamin D supplementation
- Where
- Austria
- Volunteers
- 330 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
Nutritional Rickets
Vitamin D and Genetics in Nutritional Rickets
The purpose of this study is: 1. To compare the response of rickets to calcium with and without vitamin D. 2. To assess whether vitamin D increases calcium absorption in calcium deficiency rickets. 3.
- Trial name
- NCT00949832
- Testing
- Vitamin D + Calcium, Calcium, Vitamin D2
- Where
- Nigeria
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Obesity, Vitamin Deficiency
Postoperative Vitamin Supplementation in Morbidly Obese Patient (VITAAL Study)
This study is a double blind randomized controlled trial.
- Trial name
- NCT01609387
- Testing
- Fit For me, Davitamon
- Where
- Netherlands
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Rijnstate Hospital
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