Clinical trials: Hypovitaminosis D
Hypovitaminosis D
The Effectiveness of a Weight-dependent Algorithm for Dosing Vitamin D.
Vitamin D is essential for calcium absorption and bone growth, brain development, and immune system function. Vitamin D is produced by the body in response to natural sunlight.
- Trial name
- NCT07876843
- Testing
- Vitamin D3, Calcium, and Vitamin C
- Where
- United States
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Atlantic Health System
Hypovitaminosis, Vitamin C Abnormal
Vitamin C 4 Care Homes
Older people in care homes are one of the most vulnerable groups with respect to risk, morbidity and mortality of severe coronavirus disease-2019 (COVID-19).
- Trial name
- VITA-C4CARE (NCT05122481)
- Testing
- Vitamin C
- Where
- United Kingdom
- Volunteers
- healthy volunteers welcome
- Sponsor
- University of Aberdeen
Hypovitaminosis D, Hypovitaminosis
Evaluating Response to Vitamin D3 and K2 Supplementation in Healthcare Personnel
The main purpose of this research study is to learn about the effects of supplemental vitamin D3 and vitamin K2 on blood levels and the gut microbial community, called the gut microbiome.
- Trial name
- NCT07199829
- Testing
- Vitamin Arm 1, Vitamin Arm 2, Vitamin Arm 3
- Where
- United States
- Volunteers
- 96 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
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
Hypovitaminosis b 12
This Randomized, Clinical Trial Evaluates the Efficacy of Oral Versus Sublingual Vitamin B12 Supplementation in Correcting Early-onset Vitamin B12 Deficiency in Adult Patients Using Proton Pump Inhibitors (PPIs). The Primary Outcome is the Change in Serum Vitamin B12 Levels Over a 6-week
This randomized, clinical trial evaluates the efficacy of oral versus sublingual vitamin B12 supplementation in correcting early-onset vitamin B12 deficiency in adult patients using proton pump inhibitors (PPIs).
- Trial name
- NCT06966856
- Testing
- Cyanocobalamin 1000 Mcg Oral Tablet, Cyanocobalamin 1000 Mcg Sublingual Tablet, Proton Pump Inhibitor therapy only
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Tanta University
Hypovitaminosis D
Comparing a Novel Phototherapy Kiosk to Oral Vitamin D Supplementation
The purpose of this project is to demonstrate the capability of a standing phototherapy kiosk (SPK) to stimulate cutaneous vitamin D3 and subsequent production of 25 Hydroxyvitamin (OH) D safely and as efficiently as an oral…
- Trial name
- NCT04556136
- Testing
- Standing Phototherapy Kiosk, D3 Oral supplement
- Where
- United States
- Volunteers
- 106 people, healthy volunteers welcome
- Sponsor
- Madigan Army Medical Center
Hypovitaminosis D, Cardiovascular Diseases
Vitamin D Supplementation on in Major Orthopedic Surgery
Prospective, monocentric study in open, aimed at evaluating the effects of supplementation with calcifediol on left ventricular function parameters in cardiopathic subjects undergoing major orthopedic surgery.
- Trial name
- NCT03403933
- Testing
- Didrogyl
- Where
- Italy
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- I.R.C.C.S Ospedale Galeazzi-Sant'Ambrogio
Hypovitaminosis D, Pregnancy Complications
Effect of Vitamin D Replacement on Maternal and Neonatal Outcomes
The optimal vitamin D replacement dose during pregnancy remains undefined. Therefore, the aim of this study is to test the hypothesis that a daily equivalent dose of vitamin D of 3,000 IU/day is needed for Middle Eastern women…
- Conditions
- Hypovitaminosis D, Pregnancy Complications, Infant, Newborn, Diseases
- Trial name
- NCT02434380
- Testing
- Euro D
- Where
- Lebanon
- Volunteers
- 330 people, healthy volunteers welcome
- Sponsor
- American University of Beirut Medical Center
Overweight, Hypovitaminosis D
Effects of Vitamin D Supplementation on Obesity, Inflammatory and Metabolic Markers
46 eligible overweight women with hypovitaminosis D are assigned to either vitamin D or control group using block randomization method.
- Trial name
- NCT05376865
- Testing
- Vitamin D supplement
- Where
- Iran
- Volunteers
- 46 people, healthy volunteers welcome
- Sponsor
- Tirang R. Neyestani, Ph.D.
Hypovitaminosis D
The Role of Vitamin D Supplementation on Pain in Women With Primary Dysmenorrhea and Hypovitaminosis D
The purpose of this study is to evaluate the effect of vitamin D supplementation on the pain score of primary dysmenorrhea. Our hypothesis is that by normalizing vitamin D level could help improve pain score of women who have…
- Trial name
- NCT04829487
- Testing
- Ergocalciferol Capsules
- Volunteers
- 36 people, healthy volunteers welcome
- Sponsor
- Mahidol University
Hypovitaminosis D
To Study the Nutri-Genomic Response of Vit-D Supplementation in African-Americans
Three hundred thirty (330) overweight, pre-hypertensive/controlled hypertensive, African-American participants will be enrolled in a 8 week study to assess the effect of two administrations of Vitamin D3 on Vitamin D serum…
- Trial name
- NCT02802449
- Testing
- 25 Hydroxy- Vitamin D3 [25 (OH) D3]
- Where
- United States
- Volunteers
- 330 people, healthy volunteers welcome
- Sponsor
- Charles Drew University of Medicine and Science
Hypovitaminosis D
Importance of Dosing Regimen for the Effect of Vitamin D Supplementation
Vitamin D is a hormone with effects not only on the skeleton, but on most tissues in the body. Lack of vitamin D is associated with cardio-vascular disease (CVD), type 2 diabetes, cancer, infectious and immunological diseases, as…
- Trial name
- NCT03272126
- Testing
- Vitamin D
- Where
- Norway
- Volunteers
- 61 people, healthy volunteers welcome
- Sponsor
- University of Tromso
Hypovitaminosis D
Changes in Serum Vitamin D Level After Different Loading Doses of Cholecalciferol
it is a clinical trial to observe increase in serum vitamin D level and clinical symptoms after 3 different doses of cholecalciferol given either intramuscularly or oral.
- Trial name
- NCT03504280
- Testing
- Cholecalciferol
- Volunteers
- 105 people, healthy volunteers welcome
- Sponsor
- Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh
Vitamin D Deficiency, Hypovitaminosis A
A Randomized Controlled Trial Testing The Effect Of A Multi-Nutrient Fortified Juice
The goal of this investigator-initiated study is to determine whether the fortification of orange juice with vitamin D, vitamin A, and vitamin E will enhance the vitamin D, vitamin A, and vitamin E status children ages 6-10 that…
- Conditions
- Vitamin D Deficiency, Hypovitaminosis A, Vitamin E Deficiency
- Trial name
- NCT01909063
- Testing
- Vitamin D, Vitamin D, Vitamin E, and Vitamin A, Control, 700 mg Calcium
- Where
- United States
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Boston University
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
Hypovitaminosis D
Vitamin D Supplementation in Younger Women
That on average it will require a vitamin D dose of 1700IU/day to increase the serum 25hydroxyvitamin D level from 20 to 30ng/ml in young Caucasian women and a dose of 1860 to 2480 IU/day in African American
- Trial name
- VITADAS (NCT00662844)
- Testing
- vitamin D3
- Volunteers
- 198 people, healthy volunteers welcome
- Sponsor
- Creighton University
Hypovitaminosis D, Insulin Resistance
Hypovitaminosis D : A Link Between Bone/Mineral and Fat/Fuel Metabolism
The optimal dose of vitamin D needed to optimize beneficial effects on musculoskeletal outcomes remains to be defined. Equally unclear is the impact of vitamin D on fuel metabolism and insulin sensitivity in human subjects.
- Conditions
- Hypovitaminosis D, Insulin Resistance, Obesity, Osteoporosis
- Trial name
- GEHF-VitD (NCT01315366)
- Testing
- Euro D and Ci-CalD, Euro D, Ci-CalD
- Where
- Lebanon
- Volunteers
- 257 people, healthy volunteers welcome
- Sponsor
- American University of Beirut Medical Center
Hypovitaminosis D, Cardiovascular Diseases
Effect of vitaminD3 or 25(OH)D3 Fortified Dairy on Vitmain D Status and CVD Risk Markers
This study aims to compare the acute effect of consuming milk and butter fortified with either vitamin D3 or 25 (OH) D3 on serum/plasma vitamin D status in humans.
- Trial name
- NCT02535910
- Testing
- vitamin D3, 25(OH) D3, Control
- Where
- United Kingdom
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University of Reading
Hypovitaminosis D, Deficiency of Micronutrients
Investigation of Vitamin D3 Enriched, Reduced-fat Yellow Cheese Efficacy to Prevent Vitamin D Deficiency
The primary aim of the current study was to investigate whether the consumption of vitamin D3 enriched, reduced-fat yellow cheese can counterbalance the expected decrease in serum 25-hydroxyvitamin D concentration during winter…
- Trial name
- NCT02543671
- Testing
- vitamin D3 enriched, reduced-fat yellow cheese, plain (non-fortified) reduced-fat yellow cheese
- Where
- Greece
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Harokopio University
Breast Cancer, Obesity
Vitamin D, Diet and Activity Study
Experimental and human data suggests that vitamin D could protect against breast cancer. Overweight/obese individuals are at increased risk of low vitamin D levels.
- Conditions
- Breast Cancer, Obesity, Hypovitaminosis D
- Trial name
- ViDA (NCT01240213)
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 218 people, healthy volunteers welcome
- Sponsor
- Fred Hutchinson Cancer Center