Clinical trials: Vitamin D
Stroke, Oral Disease
Oral Health and Vitamin D in Stroke Patients
Stroke is a common, serious and restrictive global health problem. Restricting the activities of daily living of stroke patients impairs patients' ability to pay attention to oral hygiene.
- Conditions
- Stroke, Oral Disease, D Vitamin Deficiency
- Trial name
- NCT05418335
- Testing
- Clinical examination, functional status evaluation
- Where
- Turkey (Türkiye)
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Abant Izzet Baysal University
Aging
Vitamin D and Resistance Exercise in Elderly (NUTRIAGINGVitD)
The aim of this randomized, double-blind, controlled intervention study with parallel groups is to investigate the effect of resistance training (2x/week for 10 weeks) with and without different goals of vitamin D intake on…
- Trial name
- NCT04341818
- Testing
- Strength Training and Vitamin D monthly, Strength Training and Vitamin D daily, Strength Training and no Vitamin D
- Where
- Austria
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Vienna
Skin Inflammation, Skin Melanoma
Effects of Ultraviolet B Exposure Using a Ultraviolet Skin Care Device on Vitamin D Production and Immune Response in Healthy Adults
Vitamin D regulates various physiological functions, including calcium homeostasis, bone health, and potentially reducing cancer risks.
- Trial name
- NCT06625918
- Testing
- Ultraviolet B exposure to produce vitamin D synthesis
- Where
- South Korea
- Volunteers
- 27 people, healthy volunteers welcome
- Sponsor
- Wonju Severance Christian Hospital
Healthy
Vitamin D Supplementation in Healthy Adults in Prolonged Endurance Exercise
The purpose of this study is to investigate the effects of vitamin D supplementation on biochemistry response and skeletal muscle synthesis in prolonged endurance exercise.
- Trial name
- NCT05781620
- Testing
- Vitamin D, Medium-chain triglycerides
- Where
- Taiwan
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- Taipei Medical 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
Actinic Keratosis
Potential Impact of Patient Vitamin D Status in AK Response to MAL-PDT
In topical photodynamic therapy (PDT) for non-melanoma skin cancers, a photosensitizing prodrug, 5-aminolaevulinic acid (ALA) or its methylated ester, methyl aminolevulinate (MAL), is converted to the endogenous photosensitizer…
- Trial name
- PDT (NCT02878382)
- Testing
- Conventional MAL-PDT, Calcipotriol assisted MAL-PDT
- Where
- 2 sites in Brazil
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Sao Paulo
Vitamin D Deficiency, Vitamin; Excess Vitamin D (Nutritional)
Vitamin D Supplements on Markers for Cardiovascular Disease and Diabetes: an Individual Participant Data Meta-analysis
This meta-analysis will be conducted to study the effect on vitamin D supplements on markers for cardiovascular disease and diabetes using individual participant data from 12 RCTs.
- Trial name
- NCT02551835
- Volunteers
- 2,945 people, healthy volunteers welcome
- Sponsor
- Amsterdam UMC, location VUmc
Musculoskeletal Pain
Vitamin D to ENhance TraUma REcovery
The main objective of this study is to determine whether the administration of a single dose of Vitamin D in the Emergency Department following a motor vehicle collision can improve musculoskeletal pain severity as well as reduce…
- Trial name
- VENTURE (NCT05458024)
- Testing
- Vitamin D 2
- Where
- 4 sites in United States
- Volunteers
- 71 people, healthy volunteers welcome
- Sponsor
- University of North Carolina, Chapel Hill
Healthy, no Evidence of Disease
Cholecalciferol and Flu Vaccine in Treating Healthy Participants
This randomized clinical trial studies cholecalciferol and flu vaccine in treating healthy participants. Cholecalciferol may increase the immunologic response of flu vaccine in healthy participants.
- Trial name
- NCT01561989
- Testing
- cholecalciferol, questionnaire administration, trivalent influenza vaccine
- Where
- United States
- Volunteers
- 11 people, healthy volunteers welcome
- Sponsor
- Roswell Park Cancer Institute
Breast Cancer
Vitamin D and Mammographic Breast Density
There is some evidence that vitamin D could be used to reduce breast cancer risk. Randomized controlled trials would provide definitive evidence about this effect.
- Trial name
- EVIDENSE (NCT01747720)
- Testing
- Vitamin D3
- Where
- Canada
- Volunteers
- 405 people, healthy volunteers welcome
- Sponsor
- CHU de Quebec-Universite Laval
Vitamin D Deficiency
Effect of Vitamin D Oral Supplements on 25 OH Vitamin D Levels
Vitamin D deficiency is common world wide. 25 OH vitamin D level is the best indicator of vitamin D status. Vitamin D supplements are available as vitamin D2 or D3, in small daily or large weekly/monthly doses.
- Trial name
- NCT01170494
- Testing
- ergocalciferol 2000 IU orally, daily, ergocalciferol 25000 IU oraly every 2 weeks, ergocalciferol 50000 IU orally every 4 weeks
- Where
- Saudi Arabia
- Volunteers
- 279 people, healthy volunteers welcome
- Sponsor
- King Faisal Specialist Hospital & Research Center
Vitamin D Deficiency, Diabetes Mellitus
Vitamin D Supplementation on Metabolic Syndrome Indicators Among Older Adults, Alborz Province, Iran
General objective: To assess the effect of vitamin D supplementation on metabolic syndrome among food insecure and vitamin D deficient older adults in Karaj city, Alborz province in Iran.
- Conditions
- Vitamin D Deficiency, Diabetes Mellitus, Hypertension, Lipid Metabolism Disorders
- Trial name
- NCT03193944
- Testing
- D-vitin, soft gelatin capsule (vitamin D3,50000 IU)
- Where
- Iran
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Alborz Medical University
Healthy
Bioavailability of Vitamin D in Cod Liver Oil and Multivitamin Tablets in Healthy Subjects in Norway
The main aim of the present study is to compare the bioavailability of vitamin D from cod liver oil and multivitamin tablets given to healthy individuals under the same conditions, as well as to study the influence of gender and…
- Trial name
- NCT01482689
- Testing
- Fish oil capsule (specially manufactured for the study), Multivitamin tablet of type: Vitaplex ABCD
- Where
- Norway
- Volunteers
- 74 people, healthy volunteers welcome
- Sponsor
- University of Oslo
Vitamin D Receptor Target Gene Expression, Serum 25(OH)D Concentration
Efficiency of Vitamin D3 and 25-hydroxyvitamin D3 on Transcriptomic Changes of Low Vitamin D Responders
The purpose of the study is to investigate in vivo whether a high-dose vitamin D3 oral bolus (2000 micrograms) produces marked vitamin D receptor target gene expression response and whether there is large inter-individual…
- Trial name
- VitDHiD (NCT03537027)
- Testing
- Vitamin D3
- Where
- Finland
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Eastern Finland
Postnatal Women, Vitamin D
Pilates vs Aerobic Exercises on Vitamin D and Ionized Calcium in Postnatal
Vitamin D and calcium levels are negatively affected during postpartum period, making postnatal woman more vulnerable to health issues and consequently lowering her quality of life.
- Trial name
- NCT07566715
- Testing
- Exercise
- Where
- 2 sites in Egypt
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Adly A Adam
Recurrent Respiratory Tract Infections
Evaluation of Lactobacillus Reuteri DSM 17938 + Vitamin D3 in the Prevention of RRI in Paediatric Patients
The aim of this protocol is to evaluate, in a multicenter, randomized, double blind vs placebo clinical trial the effects of a marketed food supplement containing Lactobacillus reuteri DSM 17938 and vitamin D3 (Reuterin® D3) in…
- Trial name
- LR_D3 (NCT04408443)
- Testing
- Lactobacillus reuteri DSM 17938 + Vitamine D3
- Where
- Italy
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Noos S.r.l.
Healthy Volunteers
Oral Vitamin D2 for Prevention of COVID-19
A total of 218 participants will be included in this study, and will be randomly assigned 1:1 to the group taking vitamin D2 and the group not taking vitamin D2.
- Trial name
- NCT05673980
- Testing
- Vitamin D2
- Where
- China
- Volunteers
- 218 people, healthy volunteers welcome
- Sponsor
- Peking University Third Hospital
Hypogonadism
Vitamin D Treatment and Hypogonadism in Men
Low total testosterone (TT) is present in about 30% of men aged >60 years and in up to 7% of younger men. Male hypogonadism is associated with metabolic and cardiovascular diseases as well as with increased mortality.
- Trial name
- NCT01748370
- Testing
- Vitamin D supplementation in hypogonadal men, Vitamin D supplementation in eugonadal men
- Where
- Austria
- Volunteers
- 200 people, healthy volunteers welcome
- Sponsor
- Medical University of Graz
Iron-deficiency
Effect of Vitamin D3-fortified Fruit Juice on Iron Status in Women
The present study is designed to utilise vitamin D3 supplements that may potentially act as an iron absorption enhancer to improve iron status in the Malaysian child-bearing aged women with low iron stores.
- Trial name
- NCT04618289
- Testing
- Vitamin D3-fortified fruit juice supplement
- Where
- Malaysia
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- Universiti Putra Malaysia
Chronic Kidney Diseases, Deficiency, Vitamin D
Drug Metabolizing Enzyme and Transporter Function in Chronic Kidney Disease
This study investigates the effect of vitamin D deficiency on drug metabolism and transport in patients with chronic kidney disease (CKD) and in healthy controls.
- Trial name
- NCT02360644
- Testing
- Cholecalciferol
- Where
- 2 sites in United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- University of Colorado, Denver
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