Clinical trials: Vitamin D Deficiency
Healthy Humans
Immune and Metabolic Effects of Vitamin D Supplementation in Healthy Humans
In this placebo controlled study the investigators aim to investigate the effect of a 3 month vitamin D supplementation on parameters of the immune, endocrine and metabolic system in healthy women and men. Vitamin D.
- Trial name
- NCT01248442
- Testing
- Cholecalciferol
- Where
- Austria
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
Hyperparathyroidism; Secondary, Renal
Efficacy and Safety of Cinacalcet in Ca, P and iPTH Levels in Patients With Mild, Moderate and Severe SHPT
1. To evaluate achievement ratio of iPTH,Calcium and phosphorus after taking Cinacalcet HCL in hemodialysis subjects with mild, moderate and severe SHPT; 2.
- Trial name
- ACTIVE (NCT03123406)
- Testing
- Cinacalcet HCl
- Where
- China
- Volunteers
- 750 people
- Sponsor
- Kyowa Kirin China Pharmaceutical Co., Ltd.
Child, Hospitalized, Vitamin D Deficiency
Effect of Vitamin D Supplementation on Improvement of Pneumonic Children
In Egypt, according to UNICEF 2018, Acute Respiratory Tract Infection (ARTIs)was estimated to account for 11% and 19% of the under-five and post-neonatal mortalities respectively.
- Conditions
- Child, Hospitalized, Vitamin D Deficiency, Pneumonia
- Trial name
- NCT04244474
- Testing
- A single one ml injection
- Where
- Egypt
- Volunteers
- 191 people
- Sponsor
- Cairo University
Vitamin D Deficiency, HIV Infections
The Prevalence of Vitamin D Deficiency and Effects of Vitamin D Supplementation in HIV-1 Infected Patients
The purpose of this study is to determine the effect of normalization of vitamin D levels on bone density, immune and adipocyte function in HIV1-seropositive patients.
- Trial name
- NCT00306410
- Testing
- colecalciferol
- Where
- Netherlands
- Volunteers
- 85 people
- Sponsor
- Radboud University Medical Center
Vitamin D Deficiency
Clinical Comparative Evaluation of the Use of Photodynamic Therapy in Conjunction With the Use of Vitamin D in Management Stage II Grade B Periodontitis Patients
Clinical Comparative Evaluation of the use of Photodynamic Therapy in conjunction with the use of Vitamin D in management Stage II Grade B Periodontitis Patients: A Randomized controlled clinical trial.
- Trial name
- NCT06700122
- Testing
- non-surgical periodontal therapy (SRP) and Photodynamic therapy (PDT) with systemic vitamin D
- Where
- Egypt
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Cairo University
Cardiovascular Disease, Chronic Kidney Disease
Vascular Risk After Kidney Transplantation
Hypothesis: Nontraditional risk factors, such as inflammation, vitamin D deficiency, elevated PTH, insulin resistance, homocysteine, or uric acid, contribute to cardiovascular disease progression after kidney transplant.
- Conditions
- Cardiovascular Disease, Chronic Kidney Disease, Diabetes, Vitamin D Deficiency
- Trial name
- NCT00374595
- Where
- United States
- Volunteers
- 338 people
- Sponsor
- University of Nebraska
Obesity, Vitamin D Deficiency
Vitamin D Supplementation in Psychiatric Illnesses
Children and adolescents with psychiatric illnesses who are treated with medications called second generation antipsychotic agents (SGA) often gain excessive weight during their treatment with these medications.
- Conditions
- Obesity, Vitamin D Deficiency, Psychosis, Schizophrenia
- Trial name
- VDSS (NCT01004354)
- Testing
- Ergocalciferols
- Where
- United States
- Volunteers
- 12 people
- Sponsor
- University of Massachusetts, Worcester
Vitamin D Deficiency, Covid19
Nutrition, Immunity, and Covid-19 in Obese People
The increased risk of transmission of COVID-19 infection causes the incidence of death in health workers to escalate. It requires further research on risk factors and intervention in health worker professionals, especially on…
- Conditions
- Vitamin D Deficiency, Covid19, Overweight and Obesity, Immune Deficiency
- Trial name
- NICO (NCT04979065)
- Testing
- Probiotics, Vitamin D
- Where
- 4 sites in Indonesia
- Volunteers
- 93 people, healthy volunteers welcome
- Sponsor
- Universitas Indonesia
Diabetic Foot Ulcers, Vitamin D Deficiency
Vitamin D Treatment of Diabetic Patients With Foot Ulcers
The purpose of this study, is to determine whether daily supplements of vitamin D improves wound healing in diabetic patients with chronic foot ulcers.
- Trial name
- NCT03813927
- Testing
- Vitamin D
- Volunteers
- 48 people, healthy volunteers welcome
- Sponsor
- Zealand University Hospital
Osteomalacia
Cinacalcet for Fibroblast Growth Factor 23 (FGF23)-Mediated Hypophosphatemia (Hypophosphatemic Rickets)
Background: Hypophosphatemia is a condition where a person has low levels of phosphorus in the blood. Low blood phosphorus can cause muscle and bone weakness (such as rickets) and teeth problems.
- Trial name
- NCT01748812
- Testing
- Osteomalacia
- Where
- United States
- Volunteers
- 1 people
- Sponsor
- National Institute of Dental and Craniofacial Research (NIDCR)
Inflammatory Bowel Disease, Crohn Disease
High Dose Interval Vitamin D Supplementation in Patients With Inflammatory Bowel Disease Receiving Biologic Therapy
The investigators will be administering oral high dose interval vitamin D, concurrently when participants are receiving biologic therapy for their inflammatory bowel disease.
- Conditions
- Inflammatory Bowel Disease, Crohn Disease, Ulcerative Colitis, Vitamin D Deficiency
- Trial name
- NCT04331639
- Testing
- vitamin D3
- Where
- United States
- Volunteers
- 50 people
- Sponsor
- Boston Children's Hospital
Insulin Resistance
Effect of Vitamin D Supplementation on Oral Glucose Tolerance Among Obese Adolescents
Childhood obesity is a rapidly growing epidemic in the US and the world. Current estimates suggest that 30% of our nation's children are either overweight ot obese.
- Trial name
- NCT01856946
- Testing
- 4,000 IU vitamin D3
- Where
- United States
- Volunteers
- 15 people, healthy volunteers welcome
- Sponsor
- University of Missouri-Columbia
Chronic Musculoskeletal Pain, Vitamin D Supplementation
Chronic Pain and Vitamin D
Non-systematized chronic musculoskeletal pains are a frequent reason for consulting in general practice. The possible causes are numerous and sometimes nonspecific.
- Trial name
- DOVID (NCT02002000)
- Testing
- vitamin D (cholecalciferol)
- Where
- France
- Volunteers
- 100 people
- Sponsor
- Hospices Civils de Lyon
Crohn's Disease, Vitamin D Deficiency
Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease
IBD is caused by an abnormal immune response to the gut bacteria in people who are genetically predisposed. There has been a huge increase in the number of people diagnosed with IBD since World War II, likely due to changes in…
- Trial name
- NCT01046773
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 3 people
- Sponsor
- University of California, Los Angeles
Hyperphosphatemia
The Effect of Oral Niacinamide on Serum Phosphorus Levels in Hemodialysis Patients
Elevated phosphorus levels are a common problem in dialysis patients. However, it is associated with an increase in death and hospitalizations.
- Trial name
- NCT00316472
- Testing
- Niacinamide
- Where
- United States
- Volunteers
- 40 people
- Sponsor
- Washington University School of Medicine
Vitamin D Deficiency, Vitiligo
Synergistic Effect of Vitamin D Supplementation in Patients With Vitiligo and Vitamin D Deficiency
This prospective, randomized, controlled study was approved by the Institutional Review Board of Hallym University Kangnam Sacred Heart Hospital (IRB no. 2018-04-017).
- Trial name
- NCT05364567
- Testing
- cholecalciferol (vitamin D3), Phototherapy
- Where
- South Korea
- Volunteers
- 29 people, healthy volunteers welcome
- Sponsor
- Hallym University Kangnam Sacred Heart Hospital
Cardiovascular Disease
Does Deficiency in Vitamin D Induced Hypercoagulation or Thrombin Generation
Working hypothesis and aims: The aim of our study is to investigate whether vitamin D deficiency could cause increased thrombin generation and a hypercoagulable state healthy volunteers.
- Trial name
- NCT01761669
- Testing
- Vitamin D
- Where
- Israel
- Volunteers
- 400 people, healthy volunteers welcome
- Sponsor
- HaEmek Medical Center, Israel
Hypophosphatasia
Post-approval Clinical Study of Asfotase Alfa Treatment for Patients With Hypophosphatasia (HPP) in Japan
This is a multicenter study in Japan. Eleven sites which have already participated in the investigator-initiated clinical study (Early Access Program) will participate in this study.The objective of this study is to gain further…
- Trial name
- NCT02531867
- Testing
- Asfotase Alfa
- Volunteers
- 13 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Vitamin D Deficiency
The Efficacy of Different Vitamin D Supplementation Delivery Methods
To test the efficacy of different vitamin D delivery methods on serum 25(OH)D. Participants randomly assigned to one of seven groups - three placebo groups and 4 active supplement groups receiving 100,000IU vitamin D3
- Trial name
- NCT03463642
- Testing
- vitamin D3, Pill, orange syrup
- Where
- United Kingdom
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- University of Wolverhampton
Periodontal Disease, Vitamin D Deficiency
Periodontal and Cardiometabolic Responses to Vitamin D Intervention in African Americans With Periodontal Disease
Poor vitamin D status is very common in African Americans. Periodontitis (gum disease) are shown to be related to theincreased risk of cardiometabolic diseases.
- Trial name
- GumD (NCT02337257)
- Testing
- Cholecalciferol
- Where
- United States
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Augusta University