Clinical trials: Vitamin Deficiencies
Renal Insufficiency, Chronic, Renal Osteodystrophy
Kidney Yin/Yang Replenishment on Patients With Renal Osteodystrophy
Patients with serious chronic renal insufficiency usually develop secondary osteoporosis or bone loss, especially those with chronic dialysis, and the degree of bone loss is corrected with decrease of renal function.
- Trial name
- NCT01665651
- Testing
- Yougui granules, Zuogui granules
- Where
- 3 sites in China
- Volunteers
- healthy volunteers welcome
- Sponsor
- Bing Shu
Aging, Vitamin Deficiency
Swiss Study on Vitamin D and Calcium in Nursing Homes
Residents of nursing homes are endangered by malnutrition and vitamin D deficiency. Our study checks compliance with Swiss federal recommendations on vitamin D and calcium supplementation among residents of a Swiss nursing home.
- Trial name
- NCT01653353
- Testing
- peer physician-applied recommendation to the physicians
- Where
- Switzerland
- Volunteers
- 71 people
- Sponsor
- University of Zurich
Vitamin D Deficiency
The Efficacy of Different Vitamin D Supplementation Delivery Methods
To test the efficacy of different vitamin D delivery methods on serum 25(OH)D. Participants randomly assigned to one of seven groups - three placebo groups and 4 active supplement groups receiving 100,000IU vitamin D3
- Trial name
- NCT03463642
- Testing
- vitamin D3, Pill, orange syrup
- Where
- United Kingdom
- Volunteers
- 62 people, healthy volunteers welcome
- Sponsor
- University of Wolverhampton
Spinal Cord Injury
Vitamin D and Calcium Study
Vitamin D aids in the body's ability to absorb calcium, it is a vital component in bone formation and break down. Reduced levels of vitamin D can indicate a vitamin deficiency and may depress serum calcium levels.
- Trial name
- NCT00857831
- Testing
- Vitamin D and Calcium
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- US Department of Veterans Affairs
Vitamin D Deficiency, Insulin Resistance
Vitamin D Replacement in Insulin Resistant South Asians
This study will test the hypothesis that 6 months of periodic high dose Vitamin D3 replacement (200,000 and 100,000 units cholecalciferol, oral liquid drops at 6 to 8 week intervals) followed in-between by daily 1000 units…
- Trial name
- VITALITY (NCT01385345)
- Testing
- Vitamin D3 cholecalciferol
- Where
- United Kingdom
- Volunteers
- 3 people
- Sponsor
- University of Leicester
Hypophosphatemia, Familial, Rickets
Hypophosphatemic Rickets in Norway
The purpose of the study is to do a follow-up survey of all individuals with hereditary hypophosphatemia in Norway, focusing on manifestations in childhood and adolescence.
- Conditions
- Hypophosphatemia, Familial, Rickets, Hyperphosphatemia
- Trial name
- NCT01057186
- Testing
- Alfacalcidol; phosphate., Sevelamer
- Where
- Norway
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Haukeland University Hospital
Vitamin D Deficiency, Iodine Deficiency
Vitamin D, Iodine, and Lead Levels in Haitian Infants and Children.
Vitamin D deficiency is common worldwide, including in infants and children, and rickets remains a public health concern in many developing countries.
- Conditions
- Vitamin D Deficiency, Iodine Deficiency, Hypothyroidism, Rickets
- Trial name
- Haiti (NCT02301520)
- Where
- 2 sites in Haiti
- Volunteers
- 299 people, healthy volunteers welcome
- Sponsor
- Boston Children's Hospital
Vitamin D Deficiency
A Single Wintertime Dose of Vitamin D3 to Prevent Winter Decline in Vitamin D Status in Healthy Adults
The purpose of this study is to determine if a single dose of vitamin D administered orally in the fall will provide adequate vitamin D in healthy individuals for the duration of the winter, during which vitamin D levels are…
- Trial name
- NCT01924910
- Testing
- 250,000 IU cholecalciferol as single, oral dose
- Where
- United States
- Volunteers
- 28 people, healthy volunteers welcome
- Sponsor
- Emory University
Colorectal Cancer, Vitamin D Deficiency
Vitamin D Supplementation Study
Patients with colorectal cancer will be recruited to undergo vitamin D supplementation in the peri-operative period. Vitamin D levels (25OHD) will be measured to assess response to supplementation.
- Trial name
- NCT05506696
- Testing
- Fultium
- Where
- United Kingdom
- Volunteers
- 122 people
- Sponsor
- University of Edinburgh
Vitamin D Deficiency
The Influence of Food Matrix Delivery System on the Bioavailability of Vitamin D3
This study investigates the influence of different food matrices on the bioavailability of vitamin D. Although most vitamin D comes from skin synthesis in response to sun exposure, dietary intake is also important - especially…
- Trial name
- DFORT (NCT03783273)
- Testing
- Vitamin D3, Whey protein-complex, Water
- Where
- Denmark
- Volunteers
- 30 people
- Sponsor
- University of Aarhus
Arthritis, Rheumatoid, Vitamin D Deficiency
Vitamin D Deficiency Causes Immune Dysfunction and Enables or Perpetuates the Development of Rheumatoid Arthritis
Recent studies have demonstrated that subjects with low blood levels of vitamin D are at a higher risk of developing autoimmune diseases such as Rheumatoid Arthritis (RA).
- Trial name
- NCT00279461
- Where
- United States
- Sponsor
- Indiana University
Psoriasis Vulgaris, Vitamin D Deficiency
Efficacy of Vitamin D3 for the Treatment of Psoriatic Patients With Vitamin D Deficiency and Insufficiency
The purpose of this research is to study whether vitamin D supplement can improve clinical outcome (PASI score) in psoriasis vulgaris with vitamin D insufficiency and deficiency.
- Trial name
- NCT01339741
- Testing
- Vitamin D3
- Where
- Thailand
- Volunteers
- 30 people
- Sponsor
- Chulalongkorn University
Vitamin D Deficiency
Vitamin D Supplementation Requirement in Obese Subjects
Vitamin D deficiency is common in obese patients. Most of vitamin D supplementation studies were done with non-obese subjects. This study looks at vitamin D supplementation requirements in obese patients as compared to non-obese…
- Trial name
- NCT00996866
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 27 people
- Sponsor
- Winthrop University Hospital
Preeclampsia, Vitamin A Deficiency
The Correlation Between Vitamin A / E Levels and Preeclampsia
Vitamin A (VA) and vitamin E (VE) are fat-soluble vitamins and indispensable substances in life activities. VA plays an important role in visual function, normal formation and development of epithelial cells, development and…
- Conditions
- Preeclampsia, Vitamin A Deficiency, Vitamin E Deficiency
- Trial name
- NCT03971604
- Testing
- Vitamin A, Vitamin E
- Where
- China
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Second Affiliated Hospital, Zhejiang University, School of Medicine
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
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
Deficiency, Vitamin D
Vitamin D Status After Single Oral Dose of Cholecalciferol in Low Fat Meal Compared to High-fat Meal
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
- VITDAB_08606 (NCT00968734)
- Testing
- colecalciferol
- Where
- Brazil
- Volunteers
- 30 people
- Sponsor
- Federal University of Rio Grande do Sul
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
Vitamin D Deficiency, Pre-Eclampsia
Effect of Vitamin D3 Supplementation in Pregnancy on Risk of Pre-eclampsia
Vitamin D deficient pregnant ladies were selected and randomized into 2 groups for routine daily dose of multivitamin (400IU vitamin D3) versus maximum safest treatment daily dose (4000IU vitamin D3).
- Trial name
- NCT03101150
- Testing
- 400 IU Vitamin D3, 4000 IU Vitamin D3
- Volunteers
- 179 people, healthy volunteers welcome
- Sponsor
- King Fahad Medical City
Critical Illness, Vitamin D Deficiency
The VITDALIZE Study: Effect of High-dose Vitamin D3 on 28-day Mortality in Adult Critically Ill Patients
In the VITdAL-ICU trial using a large oral dose of vitamin D3 in 480 adult critically ill patients, there was no benefit regarding the primary endpoint hospital length of stay.
- Conditions
- Critical Illness, Vitamin D Deficiency, Covid19
- Trial name
- VITDALIZE (NCT03188796)
- Testing
- Cholecalciferol
- Where
- 18 sites in Austria, Belgium and 2 more
- Volunteers
- 2,400 people
- Sponsor
- Medical University of Graz
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