Clinical trials: Vitamin Deficiencies
Vitamin D Deficiency, Military Activity
Vitamin D Supplementation in Conscripts
A longitudinal, triple-blinded, randomized, placebo-controlled trial, with a 7-month follow-up period is conducted between October 2016 to April 2017.
- Trial name
- NCT04359524
- Testing
- Vitamin D3 (1200 IU/30µg)
- Where
- Estonia
- Volunteers
- 63 people, healthy volunteers welcome
- Sponsor
- Leho Rips
Vitamin D Deficiency, End Stage Renal Disease
A Study of Fixed Dose Versus Serum Level-Based Titration Regimen of Vitamin D Supplementation in Dialysis Patients
Vitamin D insufficiency, defined as serum 25-hydroxyvitamin (OH) D level less than 30 ng/ml, is highly prevalent not only in the general population but also in chronic kidney disease (CKD) population.
- Trial name
- NCT05434377
- Testing
- ergocalciferol supplementation, dialysis techniques, sunlight exposure time
- Where
- Thailand
- Volunteers
- 78 people
- Sponsor
- Chulalongkorn University
Chronic Kidney Disease, Vitamin D Deficiency
Vitamin D and Coronary Calcification Study
Patients with chronic kidney disease (CKD) have a higher mortality rate than the general population, with cardiovascular disease (CVD) accounting for approximately 50% of deaths.
- Conditions
- Chronic Kidney Disease, Vitamin D Deficiency, Coronary Calcification, Disorders of Calcium and Bone Metabolism
- Trial name
- VCOR (NCT00752102)
- Testing
- Calcitriol (Rocaltrol®), Paricalcitol
- Where
- United States
- Volunteers
- 44 people
- Sponsor
- Joslin Diabetes Center
Fibrous Dysplasia Of Bone
Burosumab for Fibroblast Growth Factor-23 Mediated Hypophosphatemia in Fibrous Dysplasia
Background: Fibrous dysplasia (FD) is a disorder that affects bone growth. Affected bone tissue is weakened, and people with FD are prone to deformities, fractures, and other problems.
- Trial name
- NCT05509595
- Testing
- Burosumab
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
Healthy Subjects, Vitamin D Deficiency
hCAP18 Levels and Vitamin D Deficiency in Healthy Subjects
Vitamin D deficiency (low levels of vitamin D in the blood) is a common problem. A recently discovered protein, called hCAP18, likely plays an important role in the immune system and may depend on adequate levels of vitamin D.
- Trial name
- NCT00742235
- Testing
- ergocalciferol
- Where
- United States
- Volunteers
- 99 people, healthy volunteers welcome
- Sponsor
- Massachusetts General Hospital
Vitamin D Deficiency, Recurrent Spontaneous Abortion
Study on Clinical Value of Vitamin D in Recurrent Spontaneous Abortion
The observational study is to compare vitamin D deficiency and related indicators among different spontaneous abortions in describe female reproductive health.The main question aim to answer is: the possible pathogenesis of…
- Trial name
- NCT06002035
- Testing
- Binom Vitamin D drops
- Where
- China
- Volunteers
- 1,421 people, healthy volunteers welcome
- Sponsor
- Jianmei Xia
Vitamin D Deficiency, Vitamin; Excess Vitamin D (Nutritional)
Vitamin D Supplements on Markers for Cardiovascular Disease and Diabetes: an Individual Participant Data Meta-analysis
This meta-analysis will be conducted to study the effect on vitamin D supplements on markers for cardiovascular disease and diabetes using individual participant data from 12 RCTs.
- Trial name
- NCT02551835
- Volunteers
- 2,945 people, healthy volunteers welcome
- Sponsor
- Amsterdam UMC, location VUmc
Vitamin D Deficiency, Anemia
Effect of Vitamin D Supplementation on Erythropoietin Dosage in Hemodialysis Patients Who Have Vitamin D Deficiency
While vitamin D supplementation is safe and effective in repleting vitamin D levels in dialysis patients, the impact on anemia is unknown.
- Trial name
- NCT00915317
- Where
- United States
- Sponsor
- Kaiser Permanente
Renal Insufficiency,Chronic, Dietary Intake Patterns
Strategies for Proactive Health in People With Kidney Function Decline
This prospective cohort study aims to investigate how kidney function decline affects multiple body systems and how personalized nutrition can help maintain health and slow disease progression.
- Conditions
- Renal Insufficiency,Chronic, Dietary Intake Patterns, Malnutrition, Frailty
- Trial name
- NCT07245186
- Where
- China
- Volunteers
- 1,800 people
- Sponsor
- Huashan Hospital
Vitamin A Deficiency, Maternal Mortality
Impact of Maternal Vitamin A or Beta-Carotene Supplementation on Maternal and Infant Mortality in Bangladesh
The purpose of this trial is to determine whether providing women with a weekly oral supplement of vitamin A, either preformed or as beta-carotene, at a dosage equivalent to a recommended intake from early pregnancy through three…
- Conditions
- Vitamin A Deficiency, Maternal Mortality, Infant Mortality
- Trial name
- NCT00198822
- Testing
- Vitamin A or Beta-Carotene Supplements
- Where
- 3 sites in United States, Bangladesh
- Volunteers
- 59,666 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins Bloomberg School of Public Health
Hyperemesis Gravidarum, Nausea Gravidarum
Chewing Gum Containing Vitamin-c to Treat Emesis Gravidarum
Nausea and vomiting is a common complication of pregnancy and occurs in 70-80% of all pregnancies. The symptoms usually start 2-4 weeks after fertilization and peak between the 9th and 16th week of gestation.
- Conditions
- Hyperemesis Gravidarum, Nausea Gravidarum, Vitamin C Deficiency
- Trial name
- NCT04284696
- Testing
- Pregnan-C-Gum(R) chewing gum
- Where
- Austria
- Volunteers
- 126 people
- Sponsor
- Medical University of Vienna
Vitamin D Deficiency
Vitamin D During Pregnancy
Vitamin D insufficiency is common globally. Pregnant women, who need an increased supply of this vitamin for the proper development of the fetus, are a significant risk group.
- Trial name
- NCT01589783
- Testing
- completion of a questionnaire, Blood draw
- Where
- Israel
- Volunteers
- 764 people, healthy volunteers welcome
- Sponsor
- Hadassah Medical Organization
Vitamin A Deficiency
Dietary Vitamin A Requirement in Chinese Children and the New Technology of Dietary Assessment
Vitamin A deficiency remains a major public health problem in developing country worldwide. Young Children are considered to be at greatest risk of deficiency.
- Trial name
- NCT01559766
- Where
- China
- Volunteers
- 403 people
- Sponsor
- Huazhong University of Science and Technology
Osteopenia, Renal Osteodystrophy
Osteopenia and Renal Osteodystrophy: Evaluation and Management
The purpose of this study is to demonstrate whether pamidronate will preserve or increase bone mass in patients with adynamic bone disease, caused by low bone turnover.
- Trial name
- NCT00108394
- Testing
- pamidronate
- Where
- United States
- Sponsor
- US Department of Veterans Affairs
Hypovitaminosis D
Vitamin D Status and the Adequacy of Vitamin D Intake in Early Preterm Infants
Vitamin D is an essential nutrient. Deficiency of vitamin D is widespread. The prevalence of vitamin D deficiency in early preterm infants is unknown.
- Trial name
- NCT01793402
- Where
- United States
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Medical Center, Cincinnati
Nocturnal Enuresis, Vitamin D Deficiency
Vitamin D Versus Desmopressin Versus Combination Therapy in Children With Primary Monosymptomatic Nocturnal Enuresis and Vitamin D Deficiency
This randomized clinical trial evaluated three treatment approaches for children aged 6 to 12 years who had primary monosymptomatic nocturnal enuresis (night-time bedwetting) and confirmed vitamin D deficiency.
- Trial name
- NCT07292753
- Testing
- Vitamin D, Desmopressin
- Where
- Egypt
- Volunteers
- 90 people
- Sponsor
- Ain Shams University
Vitamin A Deficiency
Stopping Postpartum Vitamin A Supplementation: Missing Concealed Benefit
The purpose of this study is to evaluate the effect of post-partum maternal vitamin A supplementation on breast milk bioactive compounds and immune status, growth and morbidity of children in the first four months of life.
- Trial name
- NCT02043223
- Testing
- Vitamin A (<3-day postpartum), Vitamin A (6 wk postpartum), Vitamin A (<3-day and 6 wk postpartum)
- Where
- Bangladesh
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- International Centre for Diarrhoeal Disease Research, Bangladesh
Oral Lichen Planus, Vitamin D Deficiency
Vitamin D Deficiency As a Risk Factor for the Development and Malignant Transformation of Oral Lichen Planus
To examine how a lack of vitamin D may increase the risk of developing oral lichen planus and its malignant progression while accounting for sex, food habits, sunlight, socioeconomic level, and psychological variables.
- Trial name
- NCT06033105
- Testing
- ELISA
- Where
- Egypt
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Fayoum University
Covid19, Corona Virus Infection
Clinical Outcomes of High Dose Vitamin D Versus Standard Dose in COVID-19 Egyptian Patients
Vitamin D is a secosteroid hormone which may have beneficial role in reducing COVID-19 adverse outcomes by first regulating the renin angiotensin system (RAS).
- Conditions
- Covid19, Corona Virus Infection, Cytokine Storm, Vitamin D Deficiency
- Trial name
- NCT04738760
- Where
- Egypt
- Volunteers
- 116 people
- Sponsor
- Ain Shams University
Vitamin D Deficiency
Determination of Vitamin D Dose to Maintain Sufficiency Amongst Indian and Malay Women in the Tropics
Much research on vitamin D status has focused on seasonal variations in serum 25(OH)D levels in populations living at high altitudes and those of light-skinned Caucasian extraction, with little work done in multi ethnic…
- Trial name
- NCT02389179
- Testing
- Vitamin D3
- Where
- Malaysia
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Sharifah Faradila bt Wan Muhamad Hatta
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