Clinical trials: Vitamin D3 Deficiency
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
HIV Seropositive
Study of Vitamin D Supplementation to Male HIV Sero-positive Patients
The investigators want to investigate if HIV sero-positive males benefit from vitamin D supplementation. The study runs in 16 weeks and the participants are treated with one of three placebo controlled regimes (tablets): 1.
- Trial name
- NCT00990678
- Testing
- Rocaltrol, Vitamin D, Calcium
- Where
- Denmark
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Hvidovre University Hospital
Vitamin D Deficiency, Obesity
Vitamin D and Adipose Tissue Inflammation
Chronic, low-grade adipose tissue inflammation is a major risk factor for type 2 diabetes mellitus. The cause of adipose tissue inflammation has remained largely unclear.
- Conditions
- Vitamin D Deficiency, Obesity, Type 2 Diabetes Mellitus, Intestinal Permeability
- Trial name
- NCT01477034
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- Fred Hutchinson Cancer Center
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, 25-Hydroxyvitamin D Concentration
Is Vitamin D2 Treatment-associated Decrease in 25(OH)D3 Level a Reciprocal Phenomena?
Several studies have demonstrated that D2 treatment is associated with a decrease in 25(OH)D3 level and therefore have proposed that D3 would be preferable in term of raising total 25(OH)D level.
- Trial name
- NCT03035084
- Testing
- Vitamin D3, Vitamin D2
- Where
- Saudi Arabia
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- King Faisal Specialist Hospital & Research Center
Overweight and Obesity, Vitamin D Deficiency
Magnesium and Vitamin D Supplementation and Cardiometabolic Outcomes
The purpose of this study is to investigate the effects of a combined vitamin D and magnesium supplementation on parathyroid hormone and cardiometabolic health in persons living with obesity.
- Conditions
- Overweight and Obesity, Vitamin D Deficiency, Magnesium Deficiency, Cardiovascular Risk Factor
- Trial name
- NCT03134417
- Testing
- Vitamin D and magnesium, Vitamin D
- Where
- United States
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- Drexel University
Vitamin D Deficiency
Effect of Vitamin D Supplementation on Health of Low Birth Weight Infants
The purpose of this study is to determine whether a weekly supplement of vitamin D to low birth weight term infants will reduce their mortality and hospital admissions and improve their immunity.
- Trial name
- DIVIDS (NCT00415402)
- Testing
- Vitamin D3
- Where
- India
- Volunteers
- 2,000 people, healthy volunteers welcome
- Sponsor
- Delhi University
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
Vitamin D Deficiency
Vitamin D and HIV-Cardiovascular Disease in Children and Young Adults
The relationship of Vitamin D levels in children and young adults to atherosclerosis.
- Trial name
- NCT01410305
- Where
- 2 sites in United States
- Volunteers
- 290 people, healthy volunteers welcome
- Sponsor
- University Hospitals Cleveland Medical Center
Hypovitaminosis D
Changes in Serum Vitamin D Level After Different Loading Doses of Cholecalciferol
it is a clinical trial to observe increase in serum vitamin D level and clinical symptoms after 3 different doses of cholecalciferol given either intramuscularly or oral.
- Trial name
- NCT03504280
- Testing
- Cholecalciferol
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Postmenopausal Women
Vitamin D Deficiency: Bone Loss and Vascular Dysfunction
To learn if there is a connection between low vitamin D level and hardening of the arteries.
- Trial name
- NCT00235586
- Testing
- 10 vit. D deficient subjects take vit. D for 3 months.
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Kansas
Endometriosis, Vitamin D Deficiency/Insufficiency
Analysis of Vitamin D and VDR Expression in Endometriosis: A Case-Control Study
The goal of this cross-sectional prospective matching study is to evaluate whether serum vitamin D levels and vitamin D receptor (VDR) expression are associated with the presence and severity of endometriosis in women of…
- Conditions
- Endometriosis, Vitamin D Deficiency/Insufficiency, Vitamin D Status
- Trial name
- NCT06289257
- Testing
- Vitamin D level, Vitamin D receptor
- Where
- Thailand
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- Khon Kaen University
Hypovitaminosis D
Comparing a Novel Phototherapy Kiosk to Oral Vitamin D Supplementation
The purpose of this project is to demonstrate the capability of a standing phototherapy kiosk (SPK) to stimulate cutaneous vitamin D3 and subsequent production of 25 Hydroxyvitamin (OH) D safely and as efficiently as an oral…
- Trial name
- NCT04556136
- Testing
- Standing Phototherapy Kiosk, D3 Oral supplement
- Where
- United States
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
Cardiovascular Disease, Obesity
Vitamin D Ancillary Study in 5 Populations of African Origin
The availability of data on plasma 25-Hydroxyvitamin D (25(OH)D) concentrations in the last two rounds of the National Health and Nutrition Examination Survey (NHANES) has generated a high level of interest in the consequences of…
- Trial name
- VIDA (NCT02111902)
- Where
- 5 sites in United States, Ghana and 3 more
- Volunteers
- healthy volunteers welcome
- Sponsor
- Loyola University
Vitamin D Deficiency
Reference Interval of Vitamin D of Coastal Fishermen in Cox's Bazar District of Bangladesh
Lack of adequate sun exposure due to urbanization is prone to hypovitaminosis D. Vitamin D (25-hydroxyvitamin D) deficiency is now a major health concern in the western world.
- Trial name
- NCT04986319
- Testing
- Serum vitamin D assay
- Where
- 2 sites in Bangladesh
- Volunteers
- 556 people, healthy volunteers welcome
- Sponsor
- Bangladesh Institute of Research and Rehabilitation in Diabetes, Endocrine and Metabolic Disorders
COVID, Zinc Deficiency
Evaluation of the Relationship Between Zinc Vitamin D and b12 Levels in the Covid-19 Positive Pregnant Women
Zinc d vitamin and b12 serum levels in covid-19 positive pregnants will be compared in terms of patients' responses to computed tomography and treatment.
- Conditions
- COVID, Zinc Deficiency, Vitamin D Deficiency
- Trial name
- NCT04407572
- Testing
- Serum zinc, vitamin d vitamin b12 levels .
- Where
- Turkey (Türkiye)
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- Kanuni Sultan Suleyman Training and Research Hospital
Healthy
Assessment of the Efficacy of Vitamin D-fortified Bread in Healthy Adults
The aim of this study is to evaluate the efficacy of daily intake of fortified bread with vitamin D on serum 25-hydroxyvitamin D level, glycemic and lipidemic status in healthy subjects compared to vitamin D supplement.
- Trial name
- NCT02516254
- Testing
- fortified bread, supplement
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- National Nutrition and Food Technology Institute
Vitamin D Deficiency, Tuberculosis
Role of Vitamin D in Innate Immunity to Tuberculosis
The investigators proposed a pilot study preparatory to developing a randomized trial of vitamin D for the prevention of TB infection. The specific aims are presented below: 1.
- Trial name
- NCT01244204
- Testing
- Vitamin D
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Harvard School of Public Health (HSPH)
Vitamin D Deficiency
Optimizing Vitamin D Nutrition in Healthy Adults
The purpose of this study is to determine the average dosage of oral vitamin D supplementation to maintain optimal vitamin D levels in the body and to see if there are differences in the response to oral vitamin D supplementation…
- Trial name
- NCT00327847
- Testing
- Oral Vitamin D Supplementation
- Where
- United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Winthrop University Hospital
Vitamin D Deficiency, Cardiometabolic Risk Factors
Comparison of Sunlight Exposure and Vitamin D Supplementation on Serum 25-hydroxyvitamin D Levels
This study aimed to compare the effects between sunlight exposure and oral vitamin D supplementation on serum 25-hydroxyvitamin D concentration and metabolic markers in Korean young adults.
- Trial name
- NCT03310242
- Testing
- Sunlight Exposure, Vitamin D Supplementation
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Seoul National University Hospital