Clinical trials: Cholecalciferol
Ulcerative Colitis, Vitamin D Deficiency
Observation of the Effect of Vitamin D Supplementation on Chronic Course of Patients With Ulcerative Colitis Based on Vitamin D Receptor Fok I Gene Polymorphism
Aims:Prospectively observe the effects of Vitamin D drops supplementation on the chronic course of ulcerative colitis patients, analyze whether the effect of Vitamin D drops on UC patients is affected by factors such as disease…
- Conditions
- Ulcerative Colitis, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT04309058
- Testing
- Vitamin D drops
- Where
- China
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Bariatric Surgery
Post-bariatric Surgery Weaning With Food for Special Medical Purposes to Increase Patient Compliance.
Due to the reduced volume and postoperative gastric edema, ingestion of solid foods in the first few days after surgery is very difficult or impossible; following bariatric surgery there are anatomical changes in the vagus that…
- Trial name
- AFMS_FOOD (NCT06205017)
- Testing
- Foods for Special Medical Purposes
- Volunteers
- 32 people
- Sponsor
- I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio
Vitamin D Deficiency, Pre-Eclampsia
Effect of Vitamin D3 Supplementation in Pregnancy on Risk of Pre-eclampsia
Vitamin D deficient pregnant ladies were selected and randomized into 2 groups for routine daily dose of multivitamin (400IU vitamin D3) versus maximum safest treatment daily dose (4000IU vitamin D3).
- Trial name
- NCT03101150
- Testing
- 400 IU Vitamin D3, 4000 IU Vitamin D3
- Volunteers
- 179 people, healthy volunteers welcome
- Sponsor
- King Fahad Medical City
Anemia of Chronic Kidney Disease
Vitamin D as a Modifier of Serum Hepcidin in Children With Chronic Kidney Disease
This research is being done to study the effectiveness of vitamin D (cholecalciferol) to modify hepcidin levels in children with chronic kidney disease (CKD). Anemia is a common problem in children with CKD.
- Trial name
- D-fense (NCT01532349)
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 34 people
- Sponsor
- Johns Hopkins University
Vitamin D Status
Maintenance of Vitamin D Level by UVB Radiation
The purpose of the study is to determine the frequency of UVB radiations necessary to maintain the Vitamin D level during winter time.
- Trial name
- NCT01101243
- Testing
- Broadband UVB, Control group
- Where
- Denmark
- Volunteers
- 75 people, healthy volunteers welcome
- Sponsor
- Bispebjerg Hospital
Type 2 Diabetes
The Dietary Guidelines 3 Diets Study
The goal of this project is to use a two-stepped study to examine both the adoption of the three dietary patterns as presented by the United States Dietary Guidelines (USDG) and testing of a refined, culturally tailored one-year…
- Trial name
- DG3D (NCT04981847)
- Testing
- Dietary Intervention Meetings
- Where
- United States
- Volunteers
- 63 people, healthy volunteers welcome
- Sponsor
- University of South Carolina
Vitamin D Deficiency
Improving Functionality in Older People
The study will examine if overall functionality of older adults with Vitamin D insufficiency can be improved by optimal Vitamin D replacement over a period of approximately one year.
- Trial name
- NCT03611049
- Testing
- High dose Vitamin D3, Low dose Vitamin D3
- Where
- United States
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- Texas Tech University Health Sciences Center
Vitamin D Deficiency
Prevalence of Early Childhood Caries in Egyptian Children With Serum Vitamin D Deficiency.
To detect the effect of vitamin D deficiency in the development of early childhood caries (ECC) among Egyptian children.
- Trial name
- NCT03158155
- Volunteers
- 288 people, healthy volunteers welcome
- Sponsor
- Nancy Ahmed El Salmawy
Infertility
Impact of Vitamine D Status on in Vitro Fertilization Outcomes
Non skeletal effect of vitamin D have been the focus of much interest in the past decade. During the last years, special attention has been given to the impact of vitamin D on human reproduction.
- Trial name
- DFIV (NCT05048511)
- Testing
- vitamin D estimation
- Sponsor
- Nantes University Hospital
Infertility
Vitamin D and Endometrial Receptivity in Infertile Women
This is a prospective study comparing vaginal and endometrial biomarkers and the trophoblast spheroid attachment rate in women with fertility problems before and after taking Vitamin D for 8 weeks.
- Trial name
- NCT04721899
- Testing
- Vitamin D
- Where
- Hong Kong
- Volunteers
- 105 people
- Sponsor
- The University of Hong Kong
Non-alcoholic Steatohepatitis (NASH)
Treatment of Non-alcoholic Steatohepatitis (NASH) Patients With Vitamin D
Test the efficacy of vitamin D to improve non-alcoholic steatohepatitis with regard to biochemical and histological parameters. Trial with medicinal product
- Trial name
- NCT01571063
- Testing
- Vitamin D3
- Where
- 2 sites in Switzerland
- Volunteers
- 22 people
- Sponsor
- University of Zurich
Oxidative Stress, Inflammation
Oxidative Stress and Nutritional Supplementation Intervention Study
A major means whereby oxidative stress promotes aging-related disease is by activating inflammatory pathways. Decreasing oxidative stress and inflammation should ameliorate many of the problems associated with aging, including…
- Conditions
- Oxidative Stress, Inflammation, Aging, Dementia
- Trial name
- Oxi-Stress (NCT01234506)
- Testing
- secoisolariciresinol diglucoside
- Where
- Canada
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- University of Saskatchewan
Evaluation of Expected Bone Loss After Bariatric Surgery, Possible Prevention of Bone Loss After Surgery by Calcium and Vitamin D Supplementation
Bone Metabolism After Laparoscopic Gastric Bypass Surgery (BABS)
Bariatric surgery leads to rapid weight loss in female and male patients. Less data are available about its impact on bone metabolism.
- Trial name
- BABS (NCT01739855)
- Testing
- Calciferol, calcium carbonate
- Where
- Austria
- Volunteers
- 160 people
- Sponsor
- Medical University of Vienna
Dental Caries, White Spot Lesion
A Randomized Controlled Trial of Vitamin D Supplementation on Salivary Biomarkers and Cariogenic Oral Microbiome
The goal of this clinical trial is to compare the treatment effect of vitamin D supplementation and topical fluorides in the population having vitamin D deficiency and Initial Carious Lesions (ICL) on the progression of ICL in…
- Conditions
- Dental Caries, White Spot Lesion, Initial Caries, Incipient Enamel Caries
- Trial name
- Incipient (NCT06172764)
- Testing
- Vitamin D supplements along with behavioral modification, Topical fluoride application and Vitamin D supplements along with behavioral modification, Topical fluoride application along with behavioral modification
- Where
- Pakistan
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Dow University of Health Sciences
Benign Paroxysmal Positional Vertigo
Serum Levels of Otolin-1 and Vitamin D in Pre- and Post-treatments of BPPV
BPPV is the most common cause of vertigo. The pathophysiology of BPPV has not been cleared, several studies show that symptoms are caused by the displacement of otoconia from the macula of the utricle into the semicircular…
- Trial name
- NCT05446506
- Where
- Thailand
- Volunteers
- 21 people, healthy volunteers welcome
- Sponsor
- Chiang Mai University
Diabetes, Obesity
Probiotics in Diabesity: A Pilot Study
Obesity and type 2 diabetes are a pandemic disease leading to a high morbidity and mortality. Probiotic modulation of gut flora is a possible therapeutic mechanism.
- Trial name
- Diabesity (NCT02469558)
- Testing
- Winclove 851 and 110
- Where
- Austria
- Volunteers
- 41 people
- Sponsor
- Medical University of Graz
Vitamin D Receptor Target Gene Expression, Serum 25(OH)D Concentration
The Effect of a High-dose Oral Vitamin D3 Bolus on Serum 25(OH)D3 and Vitamin D Receptor Target Gene Expression
The purpose of the study is to investigate whether a high-dose vitamin D3 oral bolus (2000 micrograms) produces marked vitamin D receptor target gene expression response and whether there is large inter-individual variation.
- Trial name
- VitDbol (NCT02063334)
- Testing
- Vitamin D3
- Where
- Finland
- Volunteers
- 35 people, healthy volunteers welcome
- Sponsor
- University of Eastern Finland
Hypertension
Olmesartan on Ambulatory Blood Pressure Change
We will conduct an open label, non-comparative, observational study to evaluate the efficacy, safety and tolerability of Olmesartan therapy in Taiwan patients with essential hypertension, and the primary objective is the change…
- Trial name
- NCT00854763
- Testing
- olmesartan
- Where
- Taiwan
- Volunteers
- 100 people
- Sponsor
- National Taiwan University Hospital
Post Menopausal Osteoporosis
Evaluation of Adherence With Bisphosphonates and Calcium and Vitamin D Supplements in Women With Postmenopausal Osteoporosis
This study aims to evaluate the adherence of patients to combined treatment with bisphosphonates and calcium and vitamin D supplements, which is one of the usual treatments for postmenopausal osteoporosis.
- Trial name
- OSTEOAD (NCT07105163)
- Where
- 20 sites in Spain
- Volunteers
- 230 people
- Sponsor
- Procare Health Iberia S.L.
Colorectal Adenomatous Polyps
Calcium and Vitamin D vs Markers of Adenomatous Polyps
The purpose of this study is to test whether calcium and/or vitamin D supplementation favorably affects a set of biomarkers of risk for colon cancer in persons who are at higher than average risk for colon cancer (ie, have…
- Trial name
- CaDvMAP (NCT00208793)
- Testing
- Calcium and vitamin D3 combined, Calcium, Vitamin D3
- Where
- United States
- Volunteers
- 92 people
- Sponsor
- Emory University
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