Clinical trials: Deficiency, Vitamin D
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
Chronic Kidney Disease Stage 5
Efficacy of Plant-protein Diets in Patients With Chronic Kidney Disease
The purpose of this study is to evaluate the efficacy of plant-protein diets for 12 weeks in patients with advanced chronic kidney disease.
- Trial name
- NCT05350098
- Testing
- Plant-protein Diets, Control Diets
- Where
- Japan
- Volunteers
- 40 people
- Sponsor
- Osaka University
Ulcerative Colitis, Vitamin D Deficiency
A Retrospective Analysis: the Influence of Caltrate Supplement on the Effect of Mesalazine in Ulcerative Colitis
Aims:Retrospectively observe the effects of Caltrate supplementation on the clinical effect of mesalazine in patients with ulcerative colitis.
- Conditions
- Ulcerative Colitis, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT04276649
- Testing
- Caltrate
- Where
- China
- Volunteers
- 74 people
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
X Linked Hypophosphatemia
Burden of Disease and Functional Impairment in XLH
Observational study comprising prospective follow up as well as retrospective chart review in order to evaluate the longitudinal course of the disease in XLH patients with a specific focus on functional impairment, physical…
- Trial name
- IdeFIX (NCT04946409)
- Testing
- no intervention
- Where
- Germany
- Volunteers
- 60 people
- Sponsor
- Wuerzburg University Hospital
Gestational Diabetes Mellitus
The Impact of Vitamin D Supplementation on Glucose Metabolism in Chinese Women With Former Gestational Diabetes Mellitus
Vitamin D deficiency are related to insulin resistance and impaired beta-cell function.It is reported that the level of vitamin D is lower during pregnancy and postpartum in the women with Gestational Diabetes Mellitus.
- Trial name
- NCT03138616
- Testing
- vitamin D
- Where
- China
- Volunteers
- 180 people
- Sponsor
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine
Vitamin D Deficiency
Vitamin D Status Fluctuations Over One Academic Year in Students
The main objective of the study is to assess changes in the concentration of vitamin D metabolite in serum throughout the academic year and to examine its relationship with the occurrence of inflammation indicators, dietary…
- Trial name
- NCT06677411
- Testing
- Observention of vitamin D
- Where
- 2 sites in Poland
- Volunteers
- 70 people, healthy volunteers welcome
- Sponsor
- Poznan University of Life Sciences
Vitamin D Deficiency, Pre Eclampsia
Evaluation of the Effectiveness of Vitamin D Supplementation to Pregnant Women and Their Infants in Pakistan.
Vitamin D deficiency is wide spread in South Asian population and is contributing to burden of disease in this region including Pakistan.
- Conditions
- Vitamin D Deficiency, Pre Eclampsia, Stillbirths, Low Birth Weight
- Trial name
- NCT01229189
- Testing
- Vitamin D
- Where
- Pakistan
- Volunteers
- 460 people
- Sponsor
- Aga Khan University
Musculoskeletal Disease Other, Isotretinoin Adverse Reaction
Relationship Between Serum Vitamin D Levels and Musculoskeletal Adverse Effects in Patients Using Isotretinoin
Isotretinoin (ISO) has been used in the treatment of patients with severe acne vulgaris (AV) that is resistant to standard therapy with systemic antibiotics and topical agents, over the last few decades.
- Conditions
- Musculoskeletal Disease Other, Isotretinoin Adverse Reaction, Vitamin D Deficiency
- Trial name
- NCT04204304
- Testing
- Isotretinoin
- Where
- Turkey (Türkiye)
- Volunteers
- 177 people, healthy volunteers welcome
- Sponsor
- Ankara Training and Research Hospital
Peritoneal Dialysis-associated Peritonitis, Vitamin D Deficiency
The Effects of Oral Vitamin D Supplementation on the Prevention of Peritoneal Dialysis-related Peritonitis
This is a pilot randomized, controlled trial of Vitamin D supplementation in patients on peritoneal dialysis to determine the feasibility of a future full-scale RCT exploring if oral administration of vitamin D3 could reduce the…
- Trial name
- NCT03264625
- Testing
- Cholecalciferol (2000iu qd), Routine therapy for PD
- Where
- China
- Volunteers
- 60 people
- Sponsor
- Peking University First Hospital
Hypovitaminosis D
To Study the Nutri-Genomic Response of Vit-D Supplementation in African-Americans
Three hundred thirty (330) overweight, pre-hypertensive/controlled hypertensive, African-American participants will be enrolled in a 8 week study to assess the effect of two administrations of Vitamin D3 on Vitamin D serum…
- Trial name
- NCT02802449
- Testing
- 25 Hydroxy- Vitamin D3 [25 (OH) D3]
- Where
- United States
- Volunteers
- 330 people, healthy volunteers welcome
- Sponsor
- Charles Drew University of Medicine and Science
Breast Cancer
Vitamin D Supplementation to Correct the Vitamin D Deficiency for Breast Cancer
An open clinical trial not randomized, multicentric. This study search to evaluate vitamin D supplementation efficacy at high dose (UVEDOSE, colecalciferol, oral solution at 100 000 UI) of vitamin D on day 1 of each cycles for…
- Trial name
- OPTIVIT (NCT04091178)
- Testing
- VITAMIN D
- Where
- France
- Volunteers
- 57 people
- Sponsor
- Institut du Cancer de Montpellier - Val d'Aurelle
Hypophosphatasia (HPP)
Extension Study of Protocol ENB-006-09 - Study of Asfotase Alfa in Children With Hypophosphatasia (HPP)
This clinical trial studies the long term safety and efficacy of asfotase alfa in children with HPP who completed Study ENB-006-09 (NCT00952484).
- Trial name
- NCT01203826
- Testing
- Asfotase Alfa
- Where
- 2 sites in United States, Canada
- Volunteers
- 12 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Generalized Chronic Periodontitis, Vitamin D Deficiency
Effects of Vitamin D Supplementation During a Non-surgical Treatment of Generalized Chronic Periodontitis
The subjects participating in the trial will be randomly allocated to either the group receiving the treatment under investigation (scaling and root planning (SRP) accompanied by administration of vitamin D) or to a group…
- Trial name
- Protocol01 (NCT03162406)
- Testing
- Vitamin D3
- Where
- Belgium
- Volunteers
- 30 people
- Sponsor
- Cliniques universitaires Saint-Luc- Université Catholique de Louvain
Bone Demineralization
Alendronate for Prevention of AntiRetroviral Therapy-associated Bone Loss
Antiretroviral therapy (ART) initiation is associated with a significant loss of bone mineral density (BMD), characterised by increases in bone turnover, which is largely limited to the first 48 weeks of therapy.
- Trial name
- APART (NCT02322099)
- Testing
- Alendronate, calcium carbonate and colecalciferol, Tenofovir disoproxil
- Where
- 2 sites in Ireland
- Volunteers
- 53 people
- Sponsor
- University College Dublin
Crohn's Disease, Vitamin D Deficiency
Exploring the Effects of Caltrate Supplement on the Chronic Course of Crohn's Disease Patients With Vitamin D Deficiency
Aims:Prospectively observe the effects of Caltrate supplementation on the chronic course of Crohn's disease patients, analyze whether the effect of Caltrate on CD patients is affected by factors such as disease site, disease…
- Conditions
- Crohn's Disease, Vitamin D Deficiency, Vitamin D Supplement
- Trial name
- NCT04276636
- Testing
- Caltrate Pill
- Where
- China
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital of Wenzhou Medical University
Vitamin D Deficiency, Short Bowel Syndrome
Treatment of Vitamin D Deficiency in Intestinal Rehabilitation Clinic Patients With a Portable Ultraviolet B Lamp
This is a randomized, controlled, unblinded pilot study for patients with vitamin D deficiency in Intestinal Rehabilitation clinic.
- Trial name
- NCT01930539
- Testing
- Ultraviolet B lamp
- Where
- United States
- Volunteers
- 11 people
- Sponsor
- University of Nebraska
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
Vitamin D Deficiency
Effect of Vitamin D-biofortified Eggs on Wintertime Serum 25-hydroxyvitamin D in Adults: Randomized Controlled Trial
While there have been a considerable number of studies on the impact of additional vitamin D in the diets of hens on the resulting egg vitamin D content, the effect of consumption of such vitamin D-enhanced eggs on vitamin D…
- Trial name
- EnhanceDeggs (NCT02678364)
- Testing
- Control eggs, Vitamin D3 eggs, 25-Hydroxyvitamin D3 eggs
- Where
- Ireland
- Volunteers
- 55 people, healthy volunteers welcome
- Sponsor
- University College Cork
Benign Paroxismal Positional Vertigo
BPPV Recurrence After CRM With & Without Supplementation
Benign paroxysmal positional vertigo (BPPV) may frequently recur even after successful canalith repositioning maneuvers (CRMs). This study investigates whether the addition of vitamin K₂ to vitamin D₃ offers additional benefits…
- Trial name
- RR-BPPV-DK (NCT07861464)
- Testing
- Combined vitamin D₃ and K₂ supplementation, Vitamin D₃ alone, Canalith repositioning maneuver (CRM) alone
- Where
- Jordan
- Volunteers
- 404 people
- Sponsor
- University of Jordan
Insulin Resistance
Vitamin D Supplementation and Glycemic Outcomes
The investigators examined the effect of vitamin D supplementation on glucose homeostasis and metabolic markers in healthy normal weight and overweight young subjects and healthy normal-weight and overweight elderly subjects…
- Trial name
- NCT02942732
- Testing
- cholecalciferol (Euro-Pharm International, Canada)
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Université d'Auvergne
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