Clinical trials: Vitamin Deficiencies
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
X-linked Hypophosphatemia (XLH)
Study to Assess the Safety, Tolerability, Pharmacokinetics and Efficacy of Burosumab in Patients Less Than 1 Year of Age
A Phase 1/2, Open-label, Multicenter, Non-randomized Study to Assess the Safety, Tolerability, Pharmacokinetics and Efficacy of Burosumab in Paediatric Patients from Birth to Less than 1 Year of Age with X-linked Hypophosphatemia…
- Trial name
- NCT04188964
- Testing
- Burosumab
- Where
- 9 sites in Austria, France and 4 more
- Volunteers
- 16 people
- Sponsor
- Kyowa Kirin Pharmaceutical Development Ltd
Short Bowel Syndrome, Vitamin E Deficiency
Use of Tocofersolan (Vedrop®) to Prevent or Treat Refractive Vitamin E Deficiency in Infants and Children
Patients with short bowel syndrome or other forms of intestinal failure/fat malabsorption are unable to tolerate adequate oral or enteral feedings.
- Trial name
- NCT03582384
- Testing
- Tocofersolan
- Sponsor
- Boston Children's Hospital
Abortion, Habitual, Nutritional Status
Nutritional Deficiencies About Recurrent Miscarriage
The study plans to recruit patients with recurrent miscarriage and detect their niacin, thiamine, vitamin A, vitamin B6, vitamin B12, vitamin D levels in plasma, evaluating if some lack exists.
- Trial name
- NCT04064931
- Testing
- Detection of niacin and other vitamins in plasma
- Where
- China
- Volunteers
- 1,000 people, healthy volunteers welcome
- Sponsor
- Peking Union Medical College Hospital
Vitamin Deficiency, Mineral Deficiency
Role of Centrum® Silver® in Improving Micronutrient Status in Older Men
Older adults are susceptible to vitamin and mineral deficiencies for a variety of reasons and have an increased demand for many of these micronutrients.
- Conditions
- Vitamin Deficiency, Mineral Deficiency, Aging
- Trial name
- NCT03004807
- Testing
- Centrum Silver Mens' Formula, Control
- Where
- United States
- Volunteers
- 41 people, healthy volunteers welcome
- Sponsor
- Oregon State University
Iron Deficiency Anemia
Nutrient Fortified Oat Drink
This study will follow a randomized, double-blind, placebo-controlled, parallel-group design to test if an oat beverage fortified with iron, zinc vitamin A and vitamin C will improve nutrient status and iron deficiency in young…
- Trial name
- NCT01418898
- Testing
- Dietary Intervention
- Where
- Philippines
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- PepsiCo Global R&D
Vitamin D Deficiency
Vitamin D and Its Affect on Growth Rates and Bone Mineral Density Until Age 5
Abstract Background: Vitamin D affects a wide variety of functions in the body including regulation of calcium, phosphorus, and bone metabolism.
- Trial name
- VitD (NCT01419821)
- Testing
- Vitamin D
- Where
- Israel
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Meir Medical Center
Vitamin D Deficiency, Burns
Vitamin D Deficiency in Adults Following a Major Burn Injury
This is a single site double blind randomized controlled trial of replacing Vitamin D for Vitamin D-deficient burn patients at a current recommended dose (400 IU daily) versus a higher dose (4000 IU daily).
- Trial name
- NCT05084248
- Testing
- Ergocalciferol Capsules
- Where
- United States
- Volunteers
- 48 people
- Sponsor
- University of Texas Southwestern Medical Center
Vitamin A Deficiency, Low Serum Retinol
Efficacy of β-carotene Biofortified Maize in Reducing Vitamin A Deficiency Among Children
The purpose of this cluster-randomized trial is to examine whether daily consumption of β-carotene biofortified maize flour can reduce the prevalence of vitamin A deficiency and improve the vitamin A status and among 4-8 year old…
- Trial name
- NCT01695148
- Testing
- β-Carotene Biofortified Maize Flour, White Maize Flour
- Where
- Zambia
- Volunteers
- 1,228 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins Bloomberg School of Public Health
Vitamin D Deficiency
Vitamin D Effect on Subarachnoid Hemorrhage
Vitamin D has been promoted to vascular regeneration in non-cerebral arteries because of its anti-inflammatory properties. Cerebral vasospasm (CVS) as the most feared complication after subarachnoid hemorrhage (SAH), correlated…
- Trial name
- NCT03482843
- Where
- Germany
- Volunteers
- 16 people
- Sponsor
- University Clinic Frankfurt
Ectopic Pregnancy, Vitamin D Deficiency
Vitamin D in Ectopic Pregnancies
According to recent evidences, vitamin D was found to have important roles in female reproductive system, both in physiological and also pathological mechanisms.
- Trial name
- NCT03894735
- Where
- Turkey (Türkiye)
- Volunteers
- 100 people
- Sponsor
- Kanuni Sultan Suleyman Training and Research Hospital
Anemia, Hemodialysis Complication
Cholecalciferol Supplementation in Hemodialysis Patients
This is prospective single-blind randomized study, in Ain Shams University hospital) in Egypt, to assess the impact of Cholecalciferol on Anemia status in regular hemodialysis outpatients
- Conditions
- Anemia, Hemodialysis Complication, Vitamin D Deficiency
- Trial name
- NCT05922696
- Testing
- Cholecalciferol
- Where
- Egypt
- Volunteers
- 50 people
- Sponsor
- Ain Shams University
Gestational Hypertension, Preeclampsia
B Vitamin Deficiency and Pregnancy Complications
This case-control study aims to investigate the association between B vitamins and gestational hypertension or preeclampsia.
- Trial name
- NCT05720650
- Testing
- No intervention
- Where
- China
- Volunteers
- healthy volunteers welcome
- Sponsor
- Westlake University
Vitamin D Deficiency
Prevalence and Consequences of Vitamin D Deficiency in Pregnant Women in Switzerland
The purpose of this study is to determine the prevalence of vitamin D deficiency among the population of pregnant women receiving prenatal care and giving birth at the investigators' clinic.
- Trial name
- PCVDDPWS (NCT02904720)
- Where
- Switzerland
- Volunteers
- 1,199 people, healthy volunteers welcome
- Sponsor
- Insel Gruppe AG, University Hospital Bern
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, Gastrointestinal Diseases
Ultraviolet Light And Vitamin D In Subjects With Fat Malabsorption Or After Gastric Bypass Surgery
Patients with fat malabsorption due to Crohn's disease, ulcerative colitis, or other causes including cystic fibrosis, among others, or who have undergone gastric bypass have increased incidence of vitamin D deficiency relative…
- Trial name
- NCT01910792
- Testing
- Sperti Lamp
- Where
- United States
- Volunteers
- 19 people
- Sponsor
- Boston University
Vitamin D Deficiency
Effect of Vitamin D3 and Omega-3FA on Estradiol
The effect of vitamin D3 and omega-3 Fatty acids on estradiol levels.
- Trial name
- NCT03333564
- Testing
- VD3, Omega3-FA, VD3 and Omega-3FA
- Volunteers
- 116 people, healthy volunteers welcome
- Sponsor
- Applied Science Private University
Deficiency, Vitamin D, Diabetes, Gestational
The Relation Between Vitamin D and Gestational Diabetes Mellitus
Gestational diabetes mellitus (GDM) is defined as any degree of glucose intolerance with the onset or first recognition during pregnancy.
- Trial name
- NCT03665974
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Hacettepe University
Iron Deficiency Anemia
Effectiveness and Acceptability of LISEFEX® (Liposomal Iron With Vitamin C and Fiber) in People With Iron Deficiency Anemia.
Observational, descriptive, prospective, longitudinal, multicenter, non-interventionist and multicentric study in Mexican subjects diagnosed with mild to moderate iron deficiency anemia (ADH).
- Trial name
- NCT07483645
- Where
- Mexico
- Volunteers
- 74 people
- Sponsor
- Carnot Laboratories
X-linked Hypophosphatemia
Study of the Anti-FGF23 Antibody, Burosumab, in Adults With XLH
This is phase 3b open-label, international, multicenter study to continue to monitor the long-term safety and efficacy of burosumab in adult patients with XLH that participated in previous clinical trials with burosumab…
- Trial name
- NCT03920072
- Testing
- Burosumab
- Where
- 10 sites in France, Ireland and 2 more
- Volunteers
- 35 people
- Sponsor
- Kyowa Kirin Pharmaceutical Development Ltd
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