Clinical trials: Vitamin D Deficiency, completed
Vitamin D Deficiency, Vitamin D3 Deficiency
PREDIN: Pregnancy and Vitamin D Intervention Study
Vitamin D deficiency is common among certain risk groups in Sweden, and occurs approximately in every tenth pregnant woman.The aim of the randomized double-blind controlled trial Pregnancy vitamin D intervention (PREDIN) is to…
- Conditions
- Vitamin D Deficiency, Vitamin D3 Deficiency, Pregnancy Complications
- Trial name
- PREDIN (NCT05329428)
- Testing
- Vitamin D Supplementation 20 µg/day, Vitamin D Supplementation 40 µg/day, Usual Antenatal Care
- Where
- Sweden
- Volunteers
- 105 people
- Sponsor
- Göteborg University
Vitamin d Deficiency, COVID-19
Risk in Devel Long-COVID in Contracting SARS-CoV-2 Infection After COVID-19 Vaccination in Relation to Vitamin D3 Suppl
The aim of this observational retrospective study is to evaluate the effect of supplementation with cholecalciferol D3 in reducing the risk of: occurence of Long COVID syndrome after acute COVID-19 illness occurence of SARS-CoV-2…
- Conditions
- Vitamin d Deficiency, COVID-19, Long COVID
- Trial name
- LONGVITAVAX2 (NCT06452082)
- Where
- Italy
- Volunteers
- 200 people
- Sponsor
- IRCCS San Raffaele
Vitamin D Deficiency
How Much Vitamin D is Required to be Protective Against Deficiency During the Winter Months?
Vitamin D is essential to bone health. In Canada, it is obtained by sunlight exposure of the skin (between April and October) or by a few foods such as fatty fish, eggs or fortified milk and margarine.
- Trial name
- NCT01437696
- Testing
- Vitamin D
- Where
- Canada
- Volunteers
- 77 people, healthy volunteers welcome
- Sponsor
- McGill University
HIV Infections
Vitamin D Supplementation in HIV Youth
The purpose of this study is to determine the correct dose of Vitamin D to give to prevent HIV related complications.
- Trial name
- NCT01523496
- Testing
- Vitamin D control dose, Vitamin D supplementation-
- Where
- 2 sites in United States
- Volunteers
- 190 people, healthy volunteers welcome
- Sponsor
- University Hospitals Cleveland Medical Center
Liver Transplant Disorder, Vitamin D Deficiency
Vitamin D Levels in Liver Transplantation Recipients Prospective Observational Study
Interest in vitamin D has seen an unprecedented revival sparked by the finding that vitamin D has pleiotropic effects with an intriguing link to the critically ill patients.
- Trial name
- D-LIVER-X (NCT03234218)
- Where
- Italy
- Volunteers
- 68 people
- Sponsor
- The Mediterranean Institute for Transplantation and Advanced Specialized Therapies
Vitamin D3 Deficiency
Human Intervention Study to Increase 25-hydroxyvitamin D Levels
The interventional study will evaluate effectiveness and potential of a regularly consumption of wheat germ oil (UV treated) vs. wheat germ oil (UV untreated) to increase plasma vitamin D levels ín humans.
- Trial name
- WeKo (NCT03499327)
- Testing
- Wheat germ oil (UV treated), Wheat germ oil (untreated)
- Where
- Germany
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Jena
Renal Osteodystrophy, End Stage Renal Disease
Phase II Randomized Study of the Effects of Growth Hormone on Children and Adolescents on Maintenance Dialysis
OBJECTIVES: I. Evaluate the separate and combined skeletal effects of recombinant human growth hormone (GH) and calcitriol in patients with adynamic renal osteodystrophy. II.
- Trial name
- NCT00004340
- Testing
- calcitriol, growth hormone
- Where
- United States
- Volunteers
- 109 people
- Sponsor
- National Center for Research Resources (NCRR)
X-Linked Hypophosphatemia
Study of the Safety, Pharmacodynamics (PD) and Efficacy of KRN23 in Children From 1 to 4 Years Old With X-linked Hypophosphatemia (XLH)
The primary objectives of the study are to: Establish the safety profile of KRN23 for the treatment of XLH in children between 1 and 4 years old Determine the PD effects of KRN23 treatment on serum phosphorus and other PD markers…
- Trial name
- NCT02750618
- Testing
- Burosumab
- Where
- 3 sites in United States
- Volunteers
- 13 people
- Sponsor
- Kyowa Kirin, Inc.
Vitamin D Deficiency
Efficacy of Vitamin D2 to Treat Chronic Kidney Disease Mineral and Bone Disorder
It is hypothesised that the efficacy and safety of Vitamin D2 soft capsule to treat the Chronic Kidney Disease Mineral and Bone Disease (CKD-MBD) are equal to 1,25(OH)2 Vitamin D3 (Rocaltrol) in the patients with CKD stage 3-5.
- Trial name
- NCT01633853
- Testing
- Vitamin D2, 1,25(OH)2 Vit D3
- Where
- China
- Volunteers
- 204 people
- Sponsor
- Dongliang Zhang, MD
Menopause, Vitamin D Deficiency
Effect of Consumption of Yogurt Fortified in Calcium and Vit. D on Circulating Levels of 25OHD in Postmenopausal Women
The purpose of this study is to evaluate the effect of daily consumption of one or two CALIN+ pot(s) versus no intake of product, after 4, 8, 12 and 16 weeks, on the evolution of the serum concentration of 25-hydroxy vitamin D…
- Trial name
- NCT02534064
- Testing
- CALIN+
- Where
- France
- Volunteers
- 140 people, healthy volunteers welcome
- Sponsor
- Yoplait France SAS
Vitamin D Deficiency
Vitamin D Deficiency Still Growing
Vitamin D deficiency has become one of the most prevalent health problems in modern society. However, there has been no study that has reported the trend of vitamin D status in Asia.
- Trial name
- NCT03304795
- Volunteers
- 39,759 people, healthy volunteers welcome
- Sponsor
- DongGuk University
Cardiovascular Disease, Vitamin D Deficiency
Acute Effect of Systemic Stress on Measured Blood Concentrations of 25 (OH) Vitamin D
Each patient who is admitted for preoperative preparation for elective open heart surgery at Intermountain Medical Center will be invited to participate in this study.
- Trial name
- ASSESS-D (NCT02460211)
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 150 people
- Sponsor
- Intermountain Health Care, Inc.
Size of the Uterine Fibroids
Effect of Vitamin D on the Size of Fibroids in Women With Vitamin D Deficiency
Vitamin D supplementation in patients with uterine fibroids who present hypovitaminosis D to re-establish their normal serum values could stabilize the size of the uterine fibroids and thus prevent their growth or reduce their…
- Trial name
- NCT03991078
- Where
- Spain
- Volunteers
- 15 people
- Sponsor
- Fundación IVI
Hypovitaminosis D
Correction of Vitamin D Inadequacy in Nursing Home Residents
Vitamin D inadequacy continues to be neglected in nursing home residents. We hypothesized that part of this neglect is due to absence of data documenting safe and effective ways to replete this inadequacy.
- Trial name
- NCT00204906
- Testing
- vitamin D supplementation
- Where
- United States
- Sponsor
- University of Wisconsin, Madison
Vitamin D Deficiency, 25-Hydroxyvitamin D Concentration
Is Vitamin D2 Treatment-associated Decrease in 25(OH)D3 Level a Reciprocal Phenomena?
Several studies have demonstrated that D2 treatment is associated with a decrease in 25(OH)D3 level and therefore have proposed that D3 would be preferable in term of raising total 25(OH)D level.
- Trial name
- NCT03035084
- Testing
- Vitamin D3, Vitamin D2
- Where
- Saudi Arabia
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- King Faisal Specialist Hospital & Research Center
Post Liver Transplant Infection
Effect of Preoperative Vitamin D Supplementation in Liver Transplant Recipients With Vitamin D Deficiency on Post Transplant Outcomes
Liver transplantation (LT) remains the ultimate option to cure intractable end stage liver disease. Vitamin D deficiency is very common in these subsets of patients.
- Trial name
- NCT06736093
- Testing
- Vitamin D3
- Where
- India
- Volunteers
- 140 people
- Sponsor
- Institute of Liver and Biliary Sciences, India
Polycystic Ovary Syndrome, Hypovitaminosis D
The Effect of Vitamin D Supplementation Among Overweight Jordanian Women With Polycystic Ovary Syndrome (PCOS)
This is a prospective double-blind, randomized, parallel-group, placebo-controlled trial designed to examine the effect of supplementation with 50,000 IU vitamin D3 for 3 months on Polycystic Ovary Syndrome (PCOS) prognosis…
- Trial name
- NCT02328404
- Testing
- 50,000 IU vitamin D3
- Where
- Jordan
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Hayat Pharmaceutical Co. PLC
Vitamin D Deficiency
Optimizing Vitamin D Nutrition in Healthy Adults
The purpose of this study is to determine the average dosage of oral vitamin D supplementation to maintain optimal vitamin D levels in the body and to see if there are differences in the response to oral vitamin D supplementation…
- Trial name
- NCT00327847
- Testing
- Oral Vitamin D Supplementation
- Where
- United States
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Winthrop University Hospital
Drug Resistant Epilepsy
Vitamine D in Drug Resistant Epilepsy
Almost all patients with epilepsy living in the region of Paris have vitamin D deficiency, which is severe in 1/3 of the cases. The impact of this deficiency on epilepsy is unknown, despite the suggested benefits of vitamin D…
- Trial name
- EPI-D (NCT03475225)
- Testing
- Cholecalciferol
- Where
- 2 sites in France
- Volunteers
- 88 people
- Sponsor
- Centre Hospitalier St Anne
Disorder of Bone Density and Structure, Unspecified, Vitamin D Deficiency
Nutritional Deficiencies Preventive Treatment Prior to Laparoscopic Sleeve Gastrectomy
This study will examine the effect of providing a structured program of daily nutritional supplements for a 8 weeks of intervention prior to Sleeve Gastrectomy bariatric surgery on bone mass density status and formation of…
- Trial name
- LSG (NCT02483026)
- Testing
- Multi vitamin, vitamin D
- Where
- Israel
- Volunteers
- 62 people
- Sponsor
- Hadassah Medical Organization