Clinical trials: Vitamin Supplementation
Vitamin D Deficiency
Influence of Vitamin D Treatment on Multi-systemic Functions in Young Men With Vitamin D Deficiency Due to Work Conditions
Vitamin D has multiple systemic effects: bone and calcium metabolism, muscle function, insulin responsiveness, body-composition regulation, cell differentiation, and the immune system.
- Trial name
- NCT01016184
- Testing
- Vitamin D
- Where
- Israel
- Volunteers
- 358 people, healthy volunteers welcome
- Sponsor
- Rambam Health Care Campus
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
Systemic Lupus Erythematosus
The Effect of Vitamin D Supplementation on Disease Activity Markers in Systemic Lupus Erythematosus (SLE)
Systemic lupus erythematosus (SLE) is a chronic multi-system inflammatory autoimmune disease. Vitamin D has potent immunomodulatory properties that have promoted its potential use in the treatment of autoimmune conditions…
- Trial name
- NCT01425775
- Testing
- vitamin D 25(OH)D
- Where
- Egypt
- Volunteers
- 248 people, healthy volunteers welcome
- Sponsor
- University of Alexandria
Pre-frail Elderly, Frail Elderly
Dose Finding Study in Physically Frail Elderly to Measure 25(OH) Vitamin D Levels After Supplementation With Hy.D Calcifediol 25 SD/S and Vitamin D3
The purpose of this study is to assess the dose of Hy.D Calcifediol 25 SD/S (a metabolite of vitamin D3) which will achieve the range of mean serum 25(OH)D between 75-100nmol/L in physically frail elderly people after 24 weeks of…
- Trial name
- D-DOSE (NCT01868945)
- Testing
- 5 µg/day Hy.D Calcifediol, 10 µg/day Hy.D Calcifediol, 15 µg/day Hy.D Calcifediol
- Where
- Netherlands
- Volunteers
- 59 people, healthy volunteers welcome
- Sponsor
- dsm-firmenich Switzerland AG
Vitamin D Deficiency
Comparison of 25-hydroxy Vitamin D Level in Caucasian Women Receiving Vitamin D Supplementation and Not Receiving Supplementation: a Randomized Controlled Trial.
The objective of this study is to assess whether vitamin D supplements are sufficient to increase females who are deficient or borderline deficient in vitamin D levels to normal levels.
- Trial name
- NCT00882505
- Testing
- vitamin D
- Where
- United States
- Volunteers
- 67 people, healthy volunteers welcome
- Sponsor
- Northwestern University
PreTerm Birth
The Effect of Zinc, β-carotene, and Vitamin D3 in Preterm Delivery Through Placental MyD88, TRIF, NFkB, and IL-1β
This study is a controlled trial which compares the effect of zinc, beta-carotene, and Vitamin D3 supplementation in pregnant women which has preterm birth.
- Trial name
- NCT03005496
- Testing
- Zinc, Nifedipine, Beta Carotene
- Volunteers
- 56 people, healthy volunteers welcome
- Sponsor
- Universitas Indonesia
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
Aerobic Fitness (VO2max)
The Effects of Vitamin D Supplementation on Aerobic Fitness in Athletes
The primary aim of the study is to identify if vitamin D3 supplementation influences VO2max in athletes. Secondary aims are to determine if vitamin D3 supplementation impacts on measures of muscle function, lung function, body…
- Trial name
- VDAF (NCT02278172)
- Testing
- Vitamin D
- Where
- United Kingdom
- Volunteers
- 44 people, healthy volunteers welcome
- Sponsor
- University of Ulster
Active Rheumatoid Arthritis
Vitamin D Effect in Rheumatoid Arthritis.
Regulatory T (Tregs) cells play an important role in the maintenance of immunological tolerance. It decrease in the peripheral blood of rheumatoid arthritis patients.
- Trial name
- NCT04472481
- Testing
- Ergocalciferol 1.25 mg tablet
- Where
- Egypt
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Tanta University
Periodontal Diseases, Gingivitis
The Effect of Vitamin D Supplementation on the Anti-inflammatory Response in Periodontal Diseases
A review of the literature revealed that while there are studies investigating the relationship between vitamin D and periodontal disease, there are no studies investigating the anti-inflammatory effect of vitamin D on…
- Conditions
- Periodontal Diseases, Gingivitis, Vitamin D Deficiency
- Trial name
- NCT07636733
- Testing
- Non-surgical periodontal treatment, Vitamin D administration, Oral Hygiene Education and Patient Motivation
- Where
- Turkey (Türkiye)
- Volunteers
- 120 people, healthy volunteers welcome
- Sponsor
- Recep Tayyip Erdogan University Training and Research Hospital
Evaluations, Diagnostic Self, Treatment Adherence
Impact of Vitamin D Supplementation on Cardiometabolic Status and Androgen Profile in Polycystic Ovary Syndrome
Polycystic ovary syndrome (PCOS) is a heterogeneous disorder of reproductive, endocrine and metabolic functions. Vitamin D has an influence on metabolic and reproductive functions.
- Trial name
- NCT04117750
- Testing
- cholecalciferol (vit D3)
- Where
- Egypt
- Volunteers
- 145 people, healthy volunteers welcome
- Sponsor
- Zagazig University
Vitamin D Deficiency
Vitamin D Supplementation of Lactating Mothers
The investigators would like to test the hypothesis that maternal vitamin D supplementation during lactation in dose 1200IU/d (400IU from multivitamins + 800 IU cholecalciferol) is more effective than 400IU/d (400IU from…
- Trial name
- MAVID (NCT01506557)
- Testing
- cholecalciferol
- Where
- 5 sites in Poland
- Volunteers
- 174 people, healthy volunteers welcome
- Sponsor
- Children's Memorial Health Institute, Poland
Vitamin A Deficiency
Newborn Vitamin A (VA) Supplementation Pilot Project, Pakistan
Vitamin A is an essential micronutrient for the normal functioning of the visual system, growth and development, immunity and reproduction. Its deficiency causes anemia, growth retardation and xerophthalmia.
- Trial name
- VA (NCT00674089)
- Testing
- Vitamin A
- Where
- Pakistan
- Volunteers
- 7,400 people, healthy volunteers welcome
- Sponsor
- Aga Khan University
Hypovitaminosis D
A Study on Oral Vitamin D Megadoses
The purpose of this study is to determine if infrequent administration of oral vitamin D megadoses is effective treatment to maintain serum 25-hydroxyvitamin D(3) above target levels of 50-75 nmol/L.
- Trial name
- NCT01067898
- Testing
- vitamin D3 (cholecalciferol), olive oil, calcium carbonate
- Where
- Finland
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Helsinki University Central Hospital
Pregnancy
Maternal Vitamin D for Infant Growth (MDIG) Trial
The primary aims of this study are: 1) to determine whether maternal prenatal vitamin D3 supplementation (4200 IU/week, 16,800 IU/week, or 28,000 IU/week) versus placebo increases or decreases infant length at 1 year of age, and…
- Trial name
- MDIG (NCT01924013)
- Testing
- Vitamin D3 (cholecalciferol)
- Where
- Bangladesh
- Volunteers
- 1,300 people, healthy volunteers welcome
- Sponsor
- The Hospital for Sick Children
Vitamin D Deficiency, Hypocalcemia
Effect of Vitamin D Supplement on Disease Activity in SLE
To study the effect of vitamin D supplementation on disease activity of SLE ( SLEDAI-2K ) and IL-6 level
- Conditions
- Vitamin D Deficiency, Hypocalcemia, Hyperparathyroidism, Systemic Lupus Erythematosus (Disorder)
- Trial name
- NCT05260255
- Testing
- vitamin D2 ( calciferol )
- Where
- Thailand
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- Department of Medical Services Ministry of Public Health of Thailand