Clinical trials: Deficiency, Vitamin D
Vitamin D Deficiency
ViDES Trial (Vitamin D Extra Supplementation)
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
- NCT05459298
- Testing
- 800 IU/day vitamin D supplementation with feedings in the first 28 days after birth, Usual Care
- Where
- United States
- Volunteers
- 180 people
- Sponsor
- The University of Texas Health Science Center, Houston
Vitamin D Deficiency
The Effect of Combinatorial Nutritional Supplementation on Immune Function in Healthy Older Adults
Many older adults do not get enough zinc, vitamin C and vitamin D, and this can be related to decreased ability to fight infection.
- Trial name
- NCT02876315
- Testing
- Redoxon VI
- Where
- United States
- Volunteers
- 42 people, healthy volunteers welcome
- Sponsor
- Oregon State University
Periodontal Diseases, Gingivitis
The Effect of Vitamin D Supplementation on the Anti-inflammatory Response in Periodontal Diseases
A review of the literature revealed that while there are studies investigating the relationship between vitamin D and periodontal disease, there are no studies investigating the anti-inflammatory effect of vitamin D on…
- Conditions
- Periodontal Diseases, Gingivitis, Vitamin D Deficiency
- Trial name
- NCT07636733
- Testing
- Non-surgical periodontal treatment, Vitamin D administration, Oral Hygiene Education and Patient Motivation
- Where
- Turkey (Türkiye)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Recep Tayyip Erdogan University Training and Research Hospital
Osteomalacia
Ga-DOTATATE PET for Phosphaturic Mesenchymal Tumors in Patients With Tumor Induced Osteomalacia
The researchers are trying to evaluate a newer imaging technique (Ga-DOTATATE PET/CT) to see if it is more sensitive to localize the source of the hormone, which has caused the low phosphate levels.
- Trial name
- NCT03736564
- Testing
- 68Ga-DOTATATE PET/CT
- Where
- United States
- Volunteers
- 18 people
- Sponsor
- Mayo Clinic
Vitamin D Deficiency
Safety and Bioefficacy of Vitamin D2 and Vitamin D3
The aim of this study is to investigate the bioavailability of vitamin D2 and D3 as measured by the increase of the specific hydroxy forms in serum (25(OH)D2 and 25(OH)D3, respectively, and by total 25(OH)D.
- Trial name
- NCT01503216
- Testing
- cholecalciferol, ergocalciferol
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Ulrike Lehmann
Vitamin D Deficiency
Vitamin D Levels in Residents in Medicine
the study aims to messure the vitamin D levels in medical staff in the hospital. The physicians in the course of their internship who work indoors and work many night shifts have limited sun exposure in all seasons.
- Trial name
- NCT01118806
- Where
- Israel
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Meir Medical Center
Preeclampsia
Vitamin D3 Supplementation Regimens and Preeclampsia Risk
This study is a randomized controlled trial with two parallel groups connected at Al-Thawra Modern General Hospital in Sana'a, Yemen.
- Trial name
- VitD-PE-RCT (NCT07648706)
- Testing
- Vitamin D3
- Where
- Yemen
- Volunteers
- 268 people
- Sponsor
- Sana'a University
Pediatric Fractures, Hypovitaminosis D
Bone Outcomes, Obesity, Sunlight, and Trauma in Children
Prospective case-control study of children (3-15 years) after low-energy trauma. We compare serum bone metabolic markers (25OHD, PTH, ALP, calcium, phosphate), BMI/percentile, and dietary calcium intake between fracture and…
- Conditions
- Pediatric Fractures, Hypovitaminosis D, Obesity and Overweight
- Trial name
- BOOST (NCT07143552)
- Where
- 2 sites in Italy
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Paracelsus Medical University
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
Vitamin D Deficiency
Environmental & Genetic Influences on Vitamin D Status
The purpose of this study is to determine the effect of environmental and genetic influences on Vitamin D status.
- Trial name
- NCT01208636
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- Creighton University
Diabetes Mellitus, Type 2, Glucose Intolerance
Effects of Vitamin D on Beta Cell Function and Insulin Sensitivity in Pre-diabetes and Diabetes Mellitus Type 2
The purpose of this study is to evaluate if treatment with vitamin D increase beta cell function and insulin sensitivity in subjects with pre-diabetes or newly diagnosed diabetes mellitus type 2.
- Conditions
- Diabetes Mellitus, Type 2, Glucose Intolerance, Vitamin D Deficiency
- Trial name
- EVIDENS (NCT01497132)
- Testing
- Vitamin D3
- Where
- Sweden
- Volunteers
- 44 people
- Sponsor
- Karolinska Institutet
Phosphorus and Calcium Disorders, Chronic Kidney Disease Mineral and Bone Disorder
Calcium and Phosphorus Whole-Body Balance and Kinetics in Patients With Moderate Chronic Kidney Disease
This pilot study aims to develop a method for simultaneous whole-body calcium and phosphorus balance and full kinetic modeling of both ions in patients with chronic kidney disease.
- Conditions
- Phosphorus and Calcium Disorders, Chronic Kidney Disease Mineral and Bone Disorder, Chronic Kidney Diseases
- Trial name
- NCT04019379
- Testing
- High Phosphorus Diet, Low Phosphorus Diet
- Where
- United States
- Volunteers
- 3 people
- Sponsor
- University of Minnesota
Sjogren's Syndrome, Vitamin D Deficiency
Corneal Nerve Structure in Sjogren's
Patients who are suspected of or diagnosed with Sjogren's disease will be evaluated for ocular symptoms and corneal nerve morphology.
- Trial name
- NCT03203382
- Where
- United States
- Volunteers
- 100 people
- Sponsor
- University of Pennsylvania
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.
Infertility
Vitamin D Deficiency and Ovarian Reserve Among Infertile Patients
The role of vitamin D deficiency in female reproduction remains controversial. Early retrospective studies were inconsistent regarding the effect of serum 25-OH vitamin D levels on pregnancy rates in women undergoing in vitro…
- Trial name
- NCT01999608
- Where
- Belgium
- Volunteers
- 283 people
- Sponsor
- Universitair Ziekenhuis Brussel
Asthma, Vitamin D Deficiency
The Effect of Vitamin D Replacement on Airway Reactivity, Allergy and Inflammatory Mediators in Exhaled Breath Condensate in Vitamin D Deficient Asthmatic Children
Research Title: The effect of vitamin D replacement on airway reactivity, allergy and inflammatory mediators in exhaled breath condensate in vitamin D deficient asthmatic children.
- Trial name
- NCT01287455
- Testing
- Vitamin D3 as "BABY D3"
- Where
- Israel
- Volunteers
- 83 people
- Sponsor
- Rambam Health Care Campus
Autism, Vitamin D Deficiency
Open Label Clinical Trial of Vitamin D in Children With Autism
Primary: to investigate tolerability of interventional high dose Vitamin D3 supplementation, titrated to reach serum levels near the high end of the reference range (30-100 ng/ml), in vitamin D deficient pediatric Autism Spectrum…
- Trial name
- NCT01535508
- Testing
- Liquid Vitamin D
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- University of California, San Francisco
Sleep Disorder, Pregnancy Related
Vitamin D and Sleep Disorders in Pregnancy
Lack of sleep and poor sleep quality in pregnant women are associated with maternal depression and cognitive-sensual irregularities.
- Conditions
- Sleep Disorder, Pregnancy Related, Vitamin D Deficiency
- Trial name
- NCT04918368
- Testing
- Behavioral scales were used
- Where
- Turkey (Türkiye)
- Volunteers
- 225 people
- Sponsor
- Gaziosmanpasa Research and Education Hospital
Hypovitaminosis D
Vitamin D Versus Placebo in the Treatment of Vague Musculoskeletal Pain in Children
Other studies suggest that low Vitamin D levels may contribute to musculoskeletal pain. Hypothesis: Administration of oral Vitamin D supplements will improve vague musculoskeletal pain in children.
- Trial name
- NCT00944606
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of New Mexico
Infertility, Infertility, Female
The Effect of Vitamin D on Fertility
Objective: To examine the effect of vitamin D supplements on the pregnancy and clinical pregnancy rate in embryo transfer cycles. Design: Experimental study with a pre- and post-test.
- Conditions
- Infertility, Infertility, Female, Vitamin D Deficiency, Vitamin D3 Deficiency
- Trial name
- NCT03890458
- Testing
- DEVIT-3
- Where
- Turkey (Türkiye)
- Volunteers
- 118 people, healthy volunteers welcome
- Sponsor
- Akdeniz University
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