Clinical trials: D Vitamin Deficiency Patients
Dry Eye Syndromes, Hypovitaminosis D
Impact of Vitamin D3 Supplementation in Non-Sjogren Dry Eye Patients With Low Serum Vitamin D Level
Dry eye disease is multifactorial, ocular inflammatory condition causing irritation, stinging sensation, uneasiness and blurring. Non-Sjogren syndrome occurs due to absent or dysfunction of lacrimal gland.
- Trial name
- NCT05425914
- Testing
- Vitamin D, Artificial tear
- Where
- Pakistan
- Volunteers
- 108 people
- Sponsor
- University of Faisalabad
Chronic Liver Disease, Hypovitaminosis
Hypovitaminosis D and an Inadequate PTH Response in Chronic Liver Disease Patients
The purpose of this study is to determine how common low levels of magnesium are in patients with end stage liver disease. In addition, investigator is trying to determine if low levels of magnesium affect the release of…
- Trial name
- NCT00599352
- Testing
- magnesium
- Where
- United States
- Volunteers
- 14 people
- Sponsor
- Rajib Bhattacharya, MD
Chronic Lymphocytic Leukemia, Non-Hodgkin Lymphoma
Cholecalciferol in Newly Diagnosed Non-Hodgkin Lymphoma or Chronic Lymphocytic Leukemia With Vitamin D Deficiency
This randomized pilot early phase I trial studies how well cholecalciferol works in treating patients with newly diagnosed non-Hodgkin lymphoma or chronic lymphocytic leukemia with low levels of vitamin D (vitamin D deficiency).
- Conditions
- Chronic Lymphocytic Leukemia, Non-Hodgkin Lymphoma, Untreated Chronic Lymphocytic Leukemia, Vitamin D Deficiency
- Trial name
- NCT02553447
- Testing
- Cholecalciferol, Laboratory Biomarker Analysis
- Where
- United States
- Volunteers
- 197 people
- Sponsor
- University of Nebraska
Crohn Disease, Vitamin D Deficiency
Effect of Vitamin D Supplementation on Infliximab Response in Patients With Crohn's Disease
Background: It remains uncertain whether vitD3 supplementation is beneficial for remission of Crohn's disease (CD). The influence of vitD3 supplementation on Infliximab (IFX) efficacy was retrospectively analyzed in Chinese CD…
- Conditions
- Crohn Disease, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT04606017
- Testing
- Caltrate Pill
- Where
- China
- Volunteers
- 70 people
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Chronic Kidney Disease (Stage 3-4), Chronic Kidney Disease Mineral and Bone Disorder
Phosphate Assessment in Chronic Kidney Disease Patients Study
The proposed pilot feeding study aims to explore novel pathways in phosphate metabolism and identify new biomarkers, as well as to develop a compound index for assessing phosphate overload with high validity and reliability.
- Trial name
- PACK (NCT07368946)
- Testing
- Dietary Phosphorus Intake
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- University of Texas Southwestern Medical Center
Hypovitaminosis D, Cardiovascular Diseases
Vitamin D Supplementation on in Major Orthopedic Surgery
Prospective, monocentric study in open, aimed at evaluating the effects of supplementation with calcifediol on left ventricular function parameters in cardiopathic subjects undergoing major orthopedic surgery.
- Trial name
- NCT03403933
- Testing
- Didrogyl
- Where
- Italy
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio
Peripheral Arterial Disease
Pilot Study of Vitamin D Screening Use in Peripheral Arterial Disease Patient Over Maximum Distance Walking
The prevalence of peripheral arterial disease (PAD) is greater than 15%. PAD is associated with an increased risk of cardiovascular death, coronary heart disease and stroke, with a mortality rate of 5% per year.
- Trial name
- First-BLINDOS (NCT03615833)
- Testing
- Cholecalciferol
- Where
- France
- Volunteers
- 27 people
- Sponsor
- University Hospital, Angers
Crohn's Disease (CD), Ulcerative Colitis (UC)
Supplementation of Vitamin D3 in Patients With Inflammatory Bowel Diseases and Hypovitaminosis D
This study aims to evaluate the effect of vitamin D3 supplementation on disease activity and quality of life in IBD patients deficient in vitamin D, and also help determine the optimal dose of vitamin D3 for them.
- Trial name
- NCT01877577
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 30 people
- Sponsor
- University of California, San Francisco
Multiple Sclerosis, Relapsing-Remitting, Vitamin D Deficiency
Impact of Vitamin D Supplementation in Patients With Multiple Sclerosis
Vitamin D is important risk factor for developing multiple sclerosis (MS) and for disease progression. Patients with MS who had lower vitamin D levels were at increased risk for more clinical attacks and faster disease…
- Trial name
- NCT03385356
- Testing
- Vitamin D
- Where
- Slovenia
- Volunteers
- 89 people
- Sponsor
- University Medical Centre Maribor
Vitamin D Deficiency
Empirical Comperative Study Of Variation Blood Level Antibody Vitamin D at Different Groups Of Patients Compared Healthy Peoples
The aim of this study is to detect antibodies to vitamin D in the serum at Different Groups of patients and healthy volunteer. A second goal is to find the relation between Vitamin D Antibody and Vitamin D level.
- Trial name
- NCT02795234
- Testing
- Blood samples
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Meir Medical Center
COVID-19, Vitamin D Deficiency
The Effects of a Sublingual Sprayable Microemulsion of Vitamin D on Inflammatory Markers in COVID-19 Patients
This placebo-controlled five-day study will be performed on 100 hospitalized COVID-19 patients with vitamin D insufficiency randomized into two groups.
- Trial name
- NCT05502068
- Testing
- Vitamin D 25 (OH) 12000 IU in the form of a sublingual sprayable microemulsion
- Where
- Latvia
- Volunteers
- 102 people
- Sponsor
- Pauls Stradins Clinical University Hospital
Urolithiasis
Effect of Vitamin D Replacement in Patients With Urolithiasis
When Vitamin D replacement is initiated in patients with history of urolithiasis, there will be higher incidence of hypercalciuria but with careful follow-up of these patients, hypercalciuria could be appropriately managed with…
- Trial name
- NCT01349764
- Testing
- Vitamin D3
- Where
- Canada
- Volunteers
- 10 people
- Sponsor
- McGill University Health Centre/Research Institute of the McGill University Health Centre
Hypovitaminosis D, Spinal Disease
Analysis of Hypovitaminosis D and Osteopenia/Osteoporosis in Spinal Disease Patients Who Underwent a Spinal Fusion at Illinois Neurological Institute, Peoria, IL., a Retrospective Review From November 1, 2012 to October 31, 2014 and Prospective Pilot From July 1, 2015-June 30, 2016
The purpose of this study is to determine if there is correlation between Vitamin D deficiency and spinal disease/spinal fusion surgery.
- Conditions
- Hypovitaminosis D, Spinal Disease, Osteoporosis
- Trial name
- NCT02534714
- Where
- United States
- Volunteers
- 460 people
- Sponsor
- OSF Healthcare System
Diabetes Complications, Vitamin D Deficiency
Myocardial Function and Vitamin D Supplementation in Diabetes.
Vitamin D deficiency is recognized as a cardiovascular risk factor. Diabetic patients are of major risk for cardiovascular diseases and typically present with Vitamin D deficiencies.
- Conditions
- Diabetes Complications, Vitamin D Deficiency, Vitamin D Supplementation, Myocardial Dysfunction
- Trial name
- VitaDD (NCT03437421)
- Testing
- Vitamin D3 (cholecalciferol)
- Where
- France
- Volunteers
- 100 people
- Sponsor
- University of Avignon
PARKINSON DISEASE (Disorder)
Effect of Vitamin D3 on Brain Waves in Male Parkinson's Patients With Low Vitamin D: A qEEG Study
This is an experimental study (Interventional self-controlled trial, pretest-posttest design). The goal of this clinical trial is to evaluate the effect of vitamin D3 supplementation on quantitative EEG in male Parkinson's…
- Trial name
- NCT07096336
- Testing
- vitamin D3 capsule
- Where
- Bangladesh
- Volunteers
- 15 people
- Sponsor
- Bangladesh Medical University
Alzheimer's Disease
The Prevalence of Vitamin D Deficiency in Patients With Alzheimer's Disease
Recent studies indicate that there is a relationship between cognitive decline and vitamin D deficiency. Up to now, no study has investigated the prevalence of vitamin d deficiency in patient with Alzheimer's disease.
- Trial name
- DEVIT-ALZ (NCT01420315)
- Where
- Turkey (Türkiye)
- Volunteers
- 502 people
- Sponsor
- Saglik Bilimleri Universitesi Gulhane Tip Fakultesi
Type 2 Diabetes Mellitus (T2DM), Vitamin D Deficiency
Effect of Vitamin D Supplementation on Metabolic Parameters in Patients With Type 2 Diabetes and Vitamin D Deficiency
The goal of this clinical study is to learn whether vitamin D supplementation improves metabolic control in adults with type 2 diabetes mellitus who have vitamin D deficiency.
- Trial name
- VITD-DM2 (NCT07468721)
- Testing
- cholecalciferol (vitamin D3)
- Where
- Paraguay
- Volunteers
- 119 people
- Sponsor
- Faculty of Medical Sciences, Clinical Hospital
Epilepsy, Magnesium Deficiency
Magnesium as a Mediator of Bone and Vitamin D Metabolism in Patients on Antiepileptic Drug Therapy
The objective of this study is to determine the role of magnesium on bone and vitamin D metabolism in patients receiving anti-epileptic medications.
- Conditions
- Epilepsy, Magnesium Deficiency, Vitamin D Deficiency
- Trial name
- NCT03471481
- Testing
- No Intervention. Study is Cross Sectional in nature
- Where
- 2 sites in United States
- Volunteers
- 7 people
- Sponsor
- Drexel University
Secondary Hyperparathyroidism
Suspected Deficient Activation of Vitamin D in Patients With Secondary Hyperparathyroidism
The purpose of this study is to determine if a reduction in the enzyme 1-hydroxylase, which activates Vitamin D, is the cause of overactivity of the parathyroid glands (called secondary hyperparathyroidism - normal blood calcium…
- Trial name
- 1hydroxylase (NCT00754442)
- Testing
- Teriparatide
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Maryland, Baltimore
Allergic Rhinitis, Allergic Rhinitis (AR)
Effect of Combined Probiotics and Vitamin D on Symptoms of Allergic Rhinitis
The goal of this clinical trial is to learn if taking probiotics, vitamin D, or both together can help lower symptoms of allergic rhinitis (AR) and improve quality of life in adults.
- Trial name
- NCT07115342
- Testing
- Standard Allergic Rhinitis Treatment, Combined Vitamin D and Probiotics Supplementation
- Where
- Egypt
- Volunteers
- 120 people
- Sponsor
- Tanta University