Clinical trials: Vitamin Deficiencies
Cancer Breast, Hypovitaminosis D
Influence of Preoperative Vitamin D Level on Postoperative Pain in Breast Cancer Surgery Patients
Vitamin D deficiency is a general problem that vigorously affects human health . Breast cancer is the most frequently diagnosed life-threatening cancer in women and the leading cause of cancer death among women.Vitamin D…
- Trial name
- NCT06551688
- Testing
- Serum 25(OH)D level
- Where
- Egypt
- Volunteers
- 184 people
- Sponsor
- Fayoum University
Vitamin A Deficiency, Iron Deficiency
An Efficacy Trial of Iron, Zinc and Vitamin A Fortified Rice in Children in Satun, Thailand
Iron, zinc and vitamin A deficiencies are particularly common among children and young women in the developing countries of South and Southeast Asia resulting in important adverse health effects.
- Conditions
- Vitamin A Deficiency, Iron Deficiency, Zinc Deficiency
- Trial name
- NCT01061307
- Testing
- fortified extruded rice
- Where
- 2 sites in Switzerland, Thailand
- Volunteers
- 203 people, healthy volunteers welcome
- Sponsor
- Swiss Federal Institute of Technology
Vitamin D Deficiency, Chronic Renal Insufficiency
Vitamin D and Chronic Renal Insufficiency
Purpose of this study is to investigate the effect of treatment with vitamin D3 (cholecalciferol) compared with placebo in a trial including chronic kidney disease patients with vitamin D deficiency.
- Trial name
- NCT00968877
- Testing
- Cholecalciferol
- Volunteers
- 56 people
- Sponsor
- Odense University Hospital
Vitamin D Deficiency
The Effect of Fat on Vitamin D Absorption
The purpose of this study is to evaluate the absorption of dietary supplement of vitamin D3 (cholecalciferol), through the variation of 25 (OH) D levels, as the fat content of the meal associated with the administration of the…
- Trial name
- VITD_100484 (NCT01519986)
- Testing
- Vitamin D3
- Volunteers
- 64 people, healthy volunteers welcome
- Sponsor
- Federal University of Rio Grande do Sul
Diabetes Mellitus, Vitamin D Deficiency
The Effects of Vitamin D Supplementation on Patients With Type 2 Diabetes and Vitamin D Deficiency
Vitamin D plays a key role in keeping normal mineral balance and maintaining bone health. There is accumulating evidence linking deficient vitamin D status with both type 1 and type 2 diabetes.
- Trial name
- VDD (NCT01991054)
- Testing
- vitamin D3
- Where
- Israel
- Volunteers
- 45 people
- Sponsor
- HaEmek Medical Center, Israel
Hypophosphatasia
Open-Label Study of Asfotase Alfa in Infants and Children ≤ 5 Years of Age With Hypophosphatasia (HPP)
This clinical trial was conducted to study hypophosphatasia (HPP), a bone disorder caused by gene mutations or changes. These gene mutations cause low levels of an enzyme needed to harden bone.
- Trial name
- NCT01176266
- Testing
- asfotase alfa
- Where
- 23 sites in United States, Australia and 10 more
- Volunteers
- 69 people
- Sponsor
- Alexion Pharmaceuticals, Inc.
Obesity
Assessment of Nutritional Consequences of Sleeve Gastrectomy
Bariatric surgery is now recognized as a procedure of choice for the treatment of morbid obesity, resulting in long-term effectiveness on weight loss and comorbidities.
- Trial name
- ERNEST (NCT01475903)
- Testing
- Longitudinal sleeve gastrectomy
- Where
- France
- Volunteers
- 60 people
- Sponsor
- University Hospital, Clermont-Ferrand
Epilepsy
Effect of Three Different Doses of Oral Cholecalciferol on 25-Hydroxyvitamin D Changes Among Epilepsy Patients With Hypovitaminosis D
To characterize the effect of three different doses of vitamin D3 supplementation on serum 25-hydroxyvitamin D (25(OH)D) changes in epilepsy patients receiving enzyme-inducing antiepileptic drugs (EIAEDs) versus patients…
- Trial name
- NCT02890823
- Testing
- Cholecalciferol
- Volunteers
- 210 people
- Sponsor
- Chulalongkorn University
Diabetes Mellitus Type 2, Hypovitaminosis D
Diabetes Intervention Trial With Vitamin D in Subjects of Nordic and Sub-Indian Ethnicity
The aim of this 6 months study is to evaluate the metabolic effects of 400.000-600.000 IU of vitamin D supplementation in subjects with type 2 diabetes and hypovitaminosis D.
- Trial name
- DIVINE (NCT00992797)
- Testing
- Cholecalciferol, Orange juice
- Where
- Norway
- Volunteers
- 60 people
- Sponsor
- University Hospital, Aker
Mesopic Vision, Night Vision Loss
Safety and Efficacy of 0.75% Phentolamine Ophthalmic Solution in Subjects With Post-refractive Surgery Visual Disturbances
Safety and efficacy of 0.75% Phentolamine Ophthalmic Solution to improve mesopic low contrast visual acuity in subjects with post-refractive surgery visual disturbances.
- Trial name
- LYNX-2 (NCT06349759)
- Testing
- phentolamine ophthalmic solution 0.75%, a non-selective alpha-1 and alpha-2 adrenergic antagonist
- Where
- 25 sites in United States
- Volunteers
- 200 people
- Sponsor
- Opus Genetics, Inc
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
Obesity, Nutritional Deficiencies
Assessment of Nutritional Status After Gastric Bypass Surgery
This study is aimed at assessing how Roux-en-Y gastric bypass (RYGP) impacts on energy and nutrients' intake, energy expenditure, and nutritional status in obese patients.
- Trial name
- NCT01891591
- Testing
- Roux-en-Y gastric bypass (RYGP)
- Where
- Switzerland
- Volunteers
- 16 people
- Sponsor
- University of Lausanne
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.
Hip Arthropathy, Knee Arthropathy
Effect of Vitamin D Status and Repletion on Postoperative Total Joint Arthroplasty Complications
Vitamin D status has been shown to have an effect on post-operative outcomes in total joint arthroplasty. The goal of this study is to determine if pre-operative supplementation and correction of Vitamin D deficiency can reduce…
- Conditions
- Hip Arthropathy, Knee Arthropathy, Vitamin D Deficiency
- Trial name
- NCT04229368
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 900 people
- Sponsor
- Brigham and Women's Hospital
Vitamin D Deficiency
Randomized Trial of Enteral Vitamin D Supplementation in Infants < 28 Weeks Gestational Age or <1000 Grams Birth Weight
The objective of the study is to compare supplementation with vitamin D at 800 IU/day to usual care for the first 28 days after birth with respect to 25 (OH) vitamin D levels and indicators of likely or plausible effects of…
- Trial name
- NCT05694689
- Testing
- 800 IU/day vitamin D supplementation with feedings in the first 28 days after birth, Usual Care
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- The University of Texas Health Science Center, Houston
Vitamin D Deficiency
Safety of Vitamin D Supplementation in Older Persons
This study will evaluate the safety over 6 months of two different doses of vitamin D (cholecalciferol) in men and women age 65 and older. It will also evaluate if supplementation with vitamin D improves physical performance.
- Trial name
- NCT00681590
- Testing
- cholecalciferol (vitamin D)
- Where
- United States
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- University of Miami
Osteoporosis, Vitamin D Deficiency
A Study to Evaluate the Safety, Tolerability, and Efficacy of an Investigational Drug and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227)
The purpose of this study is to test the safety, tolerability and effectiveness of an investigational drug and dietary supplement to reduce the risk of vitamin D insufficiency and deficiency during the treatment of osteoporosis…
- Trial name
- NCT00092066
- Testing
- MK0217A, alendronate sodium (+) cholecalciferol / Duration of Treatment: 15 weeks
- Volunteers
- 717 people
- Sponsor
- Organon and Co
Vitamin A Deficiency
Bioefficacy of Beta-cryptoxanthin From Biofortified Maize
Since no quantitative information currently exists on how effectively the pro-vitamin A carotenoid (pVAC) β-cryptoxanthin (βCX) is converted to vitamin A (VA) in humans, this proof of principle study aims to compare the efficacy…
- Trial name
- BIOCRYPT (NCT04153968)
- Testing
- β-cryptoxanthin
- Where
- United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Newcastle University
Asthma, Vitamin D Deficiency
Vitamin D Deficiency and Asthma Exacerbation
The study aim is in two phases. First phase: to evaluate the influence of vitamin D deficiency on asthma severity, degree of airway obstruction and frequency of asthma exacerbations.
- Conditions
- Asthma, Vitamin D Deficiency, Disease Exacerbation
- Trial name
- AVD (NCT02661191)
- Testing
- oral cholecalciferol
- Volunteers
- 119 people
- Sponsor
- University of Turin, Italy
Iron Deficiency, Folic Acid Deficiency
Relative Bioavailability of Iron and Folic Acid in New Test Supplement
Deficiencies of iron and folic acid during pregnancy can lead to adverse outcomes for the fetus, thus supplements are recommended. Adherence to current tablet-based supplements is documented to be poor.
- Trial name
- NCT00789490
- Testing
- Daminaide 995 - SuppleFem Sprinkles, Materna
- Where
- Canada
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University of Toronto
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