Clinical trials: Vitamin D
Postural Balance
Evaluation of the Association Between Osteoporosis and Postural Balance in Postmenopausal Women
The incidence of osteoporosis has been increasing, as have fractures resulting from falls.
- Trial name
- NCT02771834
- Testing
- Biomechanical analysis, Kiphosis analysis, Vitamin D level
- Volunteers
- 126 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo
Cystic Fibrosis
BioEnergetics and Metabolomics in Cystic Fibrosis
With better medical care, patients with cystic fibrosis (CF), a life-threatening disease, are enjoying longer lives. As the CF life expectancy increases, conditions such as CF-related diabetes (CFRD) become more prevalent.
- Trial name
- BEAM-CF (NCT02225899)
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Emory University
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
Age-related Macular Degeneration
Age-related Macular Degeneration (AMD) in the Vitamin D and Omega-3 Trial (VITAL)
The VITamin D and OmegA-3 Trial (VITAL; NCT 01169259) is a randomized clinical trial in 25,875 U.S. men and women investigating whether taking daily dietary supplements of vitamin D3 (2000 IU) or omega-3 fatty acids (Omacor fish…
- Trial name
- NCT01782352
- Testing
- Omega-3 fatty acids (fish oil), Vitamin D3
- Where
- United States
- Volunteers
- 25,871 people, healthy volunteers welcome
- Sponsor
- Brigham and Women's Hospital
Vitamin D Concentration, Vitamin D Status
A Comparison of Capsules and Oral Spray Solution as Methods of Delivering Vitamin D3 and Raising Status
The aim of the study is to compare the effectiveness of a vitamin D3 oral spray solution with capsules at raising vitamin D status over winter.
- Trial name
- SCD3 (NCT02608164)
- Testing
- 3000IU(75μg) vitamin D3
- Where
- United Kingdom
- Volunteers
- 22 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Respiratory Tract Infection, Vitamin D Deficiency
Cholecalciferol Intervention to Prevent Respiratory Infections Study
This is a feasibility double-blind randomised controlled trial in 32 participants. It evaluates the feasibility of a full trial which will examine the efficacy of weekly supplementation of cholecalciferol (vitamin D3) relative to…
- Trial name
- CIPRIS (NCT01549938)
- Testing
- Cholecalciferol
- Where
- Australia
- Volunteers
- 32 people, healthy volunteers welcome
- Sponsor
- Menzies Institute for Medical Research
Vitamin D Deficiency
Topical Delivery of Vitamin D3 as Vitamin D Supplementation
After obtaining the approval from the IRB of University of Dammam and informed consent from 550 healthy patients, with vitamin D deficiency and vitamin D insufficiency and deficiency were recruited.
- Trial name
- NCT02735200
- Testing
- Application of topical vitamin d3 (Top-D), Application of Aloe vera gel
- Where
- Saudi Arabia
- Volunteers
- 550 people, healthy volunteers welcome
- Sponsor
- Imam Abdulrahman Bin Faisal University
Vitamin D Deficiency
The 'Hidden' Biological Impact of Vitamin D Deficiency: a Biomarker Study; Part 2
The investigators major aims are to: determine the vitamin D status of a group of young, apparently healthy adults in Hong Kong; examine inter-relationships between vitamin D status and biomarkers of DNA damage and repair…
- Trial name
- NCT02451787
- Testing
- Vitamin D
- Where
- Hong Kong
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- The Hong Kong Polytechnic University
Immediate Implant Placement
Immediate Implant Placement Using Xenograft Mixed with Vitamin D Versus Hyaluronic Acid.
Immediate implant placement using xenograft as space filling material mixed with vitamin D versus hyaluronic acid in posterior mandible region This study aims to evaluate implant stability and density after placement of immediate…
- Trial name
- NCT06842368
- Testing
- Hyaluronic Acid (HA), Vitamin D
- Where
- Egypt
- Volunteers
- 24 people, healthy volunteers welcome
- Sponsor
- Cairo University
Maternal Stress
Impact of Vitamin D Supplements on Mental Health and Milk Composition in Mothers Living in Idaho
Mothers of preterm infants experience exaggerated emotional stressors compared to those typically associated with new motherhood, making these women particularly vulnerable to postpartum depression.
- Trial name
- NCT06919718
- Testing
- Vitamin D (Cholecalciferol )
- Where
- 2 sites in United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- University of Idaho
Vitamin A Deficiency
Efficacy of Biofortified Maize to Improve Maternal and Infant Vitamin A Status
The purpose of this randomized control trial is to test the impact of provitamin A carotenoid biofortified maize meal consumption on maternal and infant vitamin A status.
- Trial name
- NCT02804490
- Testing
- Conventional white maize, Provitamin A carotenoid biofortified maize, Preformed vitamin A fortified maize
- Where
- Zambia
- Volunteers
- 255 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins Bloomberg School of Public Health
Vitamin D Insufficiency, Vitamin D Deficiency
Vitamin D Inadequacy in Rural Populations, Evaluation of Correction by Food Supplementation
The purpose of the research is to describe vitamin D levels and bone status in a rural Wisconsin population. It is probable that individuals of varying age and ethnicity require different amounts of D to achieve optimal status.
- Trial name
- NCT00690417
- Testing
- Cholecalciferol (vitamin D3)
- Where
- United States
- Volunteers
- 108 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Osteoporosis, Osteopenia
Melatonin-Micronutrients for Osteopenia Treatment Study
The investigators' long-term goal is to employ novel methods to improve bone formation and bone density in women (and men) with osteopenia or osteoporosis while also decreasing signs and symptoms of degenerative joint and disc…
- Trial name
- MOTS (NCT01870115)
- Testing
- Fiber Pill, Melatonin, Strontium citrate, Vitamins D3 and K2
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Duquesne University
Pregnancy, High Risk
Use of Dietary Supplements in Patients at Risk of Abortion Treated With Progesterone.
The trial aims to investigate the effect of supplementation with hyaluronic acid, alpha-lipoic acid, magnesium, vitamin D and vitamin B6 in progesterone-treated pregnant women with risk factors for abortion.
- Trial name
- NCT04874285
- Testing
- HA
- Where
- Italy
- Volunteers
- 63 people, healthy volunteers welcome
- Sponsor
- Lo.Li.Pharma s.r.l
COVID-19, SARS-CoV 2
Hydroxychloroquine as Post-Exposure Prophylaxis Against COVID-19 Infection
This is a prospective, double-blind, randomized, placebo-controlled study in two distinct cohorts to evaluate the efficacy and safety of hydroxychloroquine in the prevention of COVID-19 infection.
- Trial name
- NCT04372017
- Testing
- Hydroxychloroquine, Vitamin D
- Where
- United States
- Volunteers
- 1 people, healthy volunteers welcome
- Sponsor
- Sanford Health
Anemia, Iron-deficiency
Effectiveness of Selling Micronutrient Sprinkles in Rural Kenya
The purpose of the study is to evaluate the effectiveness of household-based distribution of evidence-based health products and to measure the health impact of these combined interventions on a population basis.
- Trial name
- NICHE (NCT01088958)
- Testing
- Micronutrient powders (Sprinkles)
- Where
- Kenya
- Volunteers
- 7,200 people, healthy volunteers welcome
- Sponsor
- Centers for Disease Control and Prevention
Healthy, Adult
Understanding Effects of Calcium on the Gut-Bone Axis
The study team is inviting 13 healthy people to complete a study to explore how calcium affects hormones and bones after eating. Participants will be asked to complete two study visits within eight weeks.
- Conditions
- Healthy, Adult, Calcium, Bone Resorption
- Trial name
- NCT06383117
- Testing
- Calcium carbonate
- Where
- United States
- Volunteers
- 14 people, healthy volunteers welcome
- Sponsor
- University of Georgia
Healthy Volunteers
Effect of Nutrition Ingredients on Microbiota Modulation
The objective of this study is to evaluate in healthy volunteers the time-dependent effect of daily consumption for four weeks of six different nutrition ingredients on relative abundance of microbial taxa in fecal samples.
- Trial name
- VitaGut (NCT03668964)
- Testing
- Vitamin B2, Vitamin C, Vitamin B2 + C
- Where
- Ireland
- Volunteers
- 96 people, healthy volunteers welcome
- Sponsor
- dsm-firmenich Switzerland AG
Periodontitis, Gingivitis
Regulatory T Cell With Related Interleukins in Periodontal Disease Progression
T Regulatory cells which suppressor subset of T cells and related cytokines remain in blood and infiltrates into the tissue under need.
- Trial name
- NCT06135116
- Testing
- Flow Cytometric Detection of Regulatory T Cells and Cytokines analysis by ELISA
- Where
- Egypt
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Al-Azhar University
Vitamin D Deficiency
Impact of Work Environment Absent of Natural Light on Vitamin D Levels
Three types of workers exposed to different levels of natural sunlight will be tested for Vitamin D blood level, PTH, Ca, P, albumin and alkaline phosphatase.
- Trial name
- NCT01385085
- Volunteers
- 300 people, healthy volunteers welcome
- Sponsor
- Medical Corps, Israel Defense Force
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