Clinical trials: Deficiency Vitamins
Vitamin D Deficiency
Efficacy of the Dose Regimen of Oral Vitamin D 50,000 IU in the Treatment of Vitamin D Deficiency
Abstract: The main objective of the proposed study is to examine the Safety and Efficacy Evaluation of the Dose Regimen of Vitamin D 50,000 IU (Biodal) tablet supplementation in the treatment of population with vitamin D…
- Trial name
- NCT02192229
- Testing
- 50.000 IU vitamin D3 (Biodal 50,000 IU)
- Where
- Jordan
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Hayat Pharmaceutical Co. PLC
Vitamin D Deficiency
Vitamin D Supplementation and Sunlight Exposure in Brazilian Women Living in Opposite Latitudes (The D-SOL Study)
There is a consensus that vitamin D deficiency is a public health issue because of its implications in several diseases including, osteopenia, osteomalacia, heart disease, diabetes (type I and II), inflammatory diseases, multiple…
- Trial name
- D-SOL (NCT03318029)
- Testing
- Vitamin D supplementation
- Where
- 2 sites in Brazil, United Kingdom
- Volunteers
- 136 people, healthy volunteers welcome
- Sponsor
- University of Surrey
Vitamin D Deficiency
Isolation of Vitamin D Binding Protein Isoforms From Human Volunteers
The purpose of this study is to isolate genotype-specific DBP/Gc from homozygous human volunteers and use these purified proteins to cross-validate existing or novel assays for this serum protein and to evaluate the binding…
- Trial name
- NCT02258035
- Testing
- Blood draw
- Where
- Belgium
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Universitaire Ziekenhuizen KU Leuven
Vitamin D Deficiency
A Study to Assess the Effectiveness of an Investigational Drug in Elderly Subjects With Low Vitamin D Levels (0822A-009)
This study will assess the effectiveness of an investigational drug in elderly subjects with low vitamin D levels.
- Trial name
- NCT00242476
- Testing
- MK0822A
- Volunteers
- 216 people, healthy volunteers welcome
- Sponsor
- Merck Sharp & Dohme LLC
Vitamin D Deficiency, Periodontitis
25-Hydroxyvitamin D Levels in Patients With Periodontitis (Stage III)
Periodontitis; is an inflammatory disease of tissues characterized by bone destruction around the teeth. Vitamin D plays an important role in several inflammatory diseases by promoting the expression of inflammatory cytokines…
- Trial name
- NCT05343273
- Testing
- taking a blood sample
- Where
- Turkey (Türkiye)
- Volunteers
- 83 people, healthy volunteers welcome
- Sponsor
- Ataturk University
Vitamin D Deficiency
Food-based Solutions for Optimal Vitamin D Nutrition and Health
This project aims at proving the efficacy and safety of food based solutions to prevent vitamin D deficiency in high risk populations of Caucasian and South Asian origin living in Denmark.
- Trial name
- ODIN_FOOD (NCT02631629)
- Testing
- Non-fortified foods, Fortified foods
- Where
- Denmark
- Volunteers
- 143 people, healthy volunteers welcome
- Sponsor
- Technical University of Denmark
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
Vitamin D Deficiency, Rickets
Vitamin D Supplementation in Breastfeeding Women
Adequate vitamin D is essential for proper infant growth and development. However, human milk is low in vitamin D, and most infants do not receive recommended supplementation.
- Conditions
- Vitamin D Deficiency, Rickets, Infant Nutrition Disorders
- Trial name
- NCT01240265
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Mayo Clinic
Vitamin D Deficiency
Preoperative Vitamin D Levels and Respiratory Complications of General Anesthesia
Vitamin D deficiency is a commonly observed health problem in the world. With a role in many chronic diseases and especially lung diseases, the importance of vitamin D deficiency in anesthesia management is increased.
- Trial name
- VitaminD (NCT03342651)
- Testing
- Vitamin D
- Volunteers
- 95 people, healthy volunteers welcome
- Sponsor
- Ordu University
Magnesium Deficiency, Calcium Metabolism Disorders
How Does Magnesium Status Influence Calcium Homeostasis?
The investigators aim to recruit 60 women who have agreed to participate in an existing randomized, double-blind, placebo-controlled trial (Treatment of Vitamin D Insufficiency, HSC 2009-0055).
- Trial name
- NCT01593501
- Testing
- vitamin D3
- Where
- United States
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Metabolic Syndrome
Metabolic Syndrome and Insulin Resistance at Allina
Vitamin D deficiency is widespread and appears to represent one easily and inexpensively modifiable risk factor for diabetes and cardiovascular disease.
- Trial name
- MISURA (NCT01545830)
- Testing
- vitamin D3 (cholecalciferol)
- Where
- United States
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Allina Health System
Vitamin D Deficiency
Magnitude of Changes in 25 OH Vitamin D3 Levels After Vitamin D3 Supplementation
Vitamin D deficiency is common world wide. 25 OH vitamin D level is the best indicator of vitamin D status. The determination of the appropriate dose of vitamin D supplement is essential for management of vitamin D deficiency as…
- Trial name
- NCT01170507
- Testing
- vitamin D3 1000 IU orally daily for 5 months, vitamin D3 3000 IU orally daily for 5 months, vitamin D3 5000 IU orally daily for 5 months
- Where
- Saudi Arabia
- Volunteers
- healthy volunteers welcome
- Sponsor
- King Faisal Specialist Hospital & Research Center
Vitamin B 12 Deficiency
Cobalamin Supplementation During Infancy; Effect on B-vitamin Status, Growth and Psychomotor Development
Adequate levels of vitamin B12 (cobalamin) is necessary for normal growth and development in infants. We have earlier investigated cobalamin status in healthy children and we observed metabolic evidence of impaired cobalamin…
- Trial name
- NCT00479479
- Testing
- Hydroxycobalamin (Vitamin B12 Depot, Nycomed Pharma)
- Where
- Norway
- Volunteers
- 107 people, healthy volunteers welcome
- Sponsor
- Haukeland University Hospital
Vitamin D Deficiency
Evaluating Vitamin D Content in Mushrooms
This study will evaluate how much vitamin D is present in a mushroom supplement. This supplement contains an extract from mushrooms that have been exposed to sunlight.
- Trial name
- NCT01815437
- Testing
- Mushroom Vitamin D2, Cholecalciferol, Vitamin D2 - Ergocalciferol
- Where
- United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Boston University
Osteoporosis, Fractures
Determination of Optimum Age for DXA Screening for Osteoporosis in HIV - The Probono 1 Study
The purpose of this study is to determine the bone mineral density in male and female patients with HIV infection according to age groups.
- Conditions
- Osteoporosis, Fractures, HIV Infection
- Trial name
- Probono1 (NCT01669954)
- Where
- United Kingdom
- Volunteers
- 440 people, healthy volunteers welcome
- Sponsor
- King's College London
Chronic Kidney Disease Mineral and Bone Disorder
Phosphorus Absorption in Healthy Adults and in Patients With Moderate Chronic Kidney Disease
Chronic kidney disease (CKD) affects approximately 26 million Americans with many more at risk for disease development. Elevated serum phosphorus (P) and related abnormalities in P homeostasis due to progressive loss of kidney…
- Trial name
- NCT03108222
- Testing
- Phosphorus Absorption Test
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Purdue University
Hypovitaminosis, Vitamin C Abnormal
Vitamin C 4 Care Homes
Older people in care homes are one of the most vulnerable groups with respect to risk, morbidity and mortality of severe coronavirus disease-2019 (COVID-19).
- Trial name
- VITA-C4CARE (NCT05122481)
- Testing
- Vitamin C
- Where
- United Kingdom
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Aberdeen
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
Vitamin D in Pregnancy and Lactation
Background: Vitamin D is vital throughout pregnancy and lactation for both maternal and infant health. Health Canada recommends women take the AI of 5ug/day of vitamin D during pregnancy, however, it is unknown how much vitamin D…
- Trial name
- NCT01112891
- Testing
- Vitamin D, Vitamin D3
- Where
- Canada
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of British Columbia
Vitamin D Deficiency
Vitamin D in Systemic Sclerosis Patients With Periodontitis
Vitamin D has been considered to possess anti-inflammatory and antimicrobial activity which may be a link for the known interaction of Systemic Sclerosis (SSc) and coronary heart disease (CHD).
- Trial name
- NCT04066842
- Testing
- Observation
- Where
- Italy
- Volunteers
- 168 people, healthy volunteers welcome
- Sponsor
- University of Messina