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
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 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
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
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
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
Exercise Training, Dietary Supplements
Fish Nutrient Supplementation in High-intensity Functional Training
Nowadays, many persons who exercise consume dietary supplements. Previous scientific studies have found that protein supplementation increases muscle mass when combined with an exercise program.
- Trial name
- NCT05402527
- Testing
- Fish nutrients, Whey protein, Maltodextrin
- Where
- Greece
- Volunteers
- 25 people, healthy volunteers welcome
- Sponsor
- Aristotle University Of Thessaloniki
Implant Stability With Vitamin D Deficiency
Stability of Dental Implants Placed in Patients With Vitamin D Deficiency Using Sequential Drilling Versus a New One Single Drilling Design
Vitamin D considers as the most potent effect on calcium level in blood it was found that vitamin D target mainly bone tissue intestine and kidney for calcium absorption In bone, vitamin D stimulates mainly the activity of…
- Trial name
- NCT03695562
- Testing
- sequential drilling technique
- Where
- Egypt
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- Cairo University
Prediabetes, Insulin Resistance
Pilot Study on Metabolic Effects of Fish Peptides and Vitamin D
The overall goal of this study is to investigate the effects and the mechanisms of action of a fish peptide and vitamin D on glucose metabolism, insulin secretion, and cardiometabolic risk profile in overweight men.
- Trial name
- BONITO (NCT02668159)
- Testing
- Fish peptide supplement, Vitamin D supplement, Fish peptide + Vitamin D3 supplements
- Where
- Canada
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Laval University
Dysphagia, Fecal Incontinence
Evaluation of Potential Vitamin D Effects on Muscle: a Pilot Study
People who do not have adequate amounts of vitamin D develop weakness of leg and arm muscles. This study will determine if vitamin D supplementation benefits muscle functions important for swallowing, bladder and bowel function.
- Conditions
- Dysphagia, Fecal Incontinence, Urinary Incontinence
- Trial name
- NCT00593996
- Testing
- Ergocalciferol (vitamin D2)
- Where
- United States
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Wisconsin, Madison
Vitamin D3 Deficiency
Human Intervention Study to Increase 25-hydroxyvitamin D Levels
The interventional study will evaluate effectiveness and potential of a regularly consumption of wheat germ oil (UV treated) vs. wheat germ oil (UV untreated) to increase plasma vitamin D levels ín humans.
- Trial name
- WeKo (NCT03499327)
- Testing
- Wheat germ oil (UV treated), Wheat germ oil (untreated)
- Where
- Germany
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of Jena
Osteoporosis, Fractures
Determination of Optimum Age for DXA Screening for Osteoporosis in HIV - The Probono 1 Study
The purpose of this study is to determine the bone mineral density in male and female patients with HIV infection according to age groups.
- Conditions
- Osteoporosis, Fractures, HIV Infection
- Trial name
- Probono1 (NCT01669954)
- Where
- United Kingdom
- Volunteers
- 440 people, healthy volunteers welcome
- Sponsor
- King's College London
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