Clinical trials: Vitamin D Supplementation, open to volunteers
Anovulatory Infertility
Efficacy of Injectable Vitamin D Supplementation in Females With Polycystic Ovary Syndrome
Poly cystic Ovarian Syndrome (PCOS) is an endocrine disorder of reproductive age defined by "the presence of any two out of three criteria: oligo and/or anovulation, excess androgen activity and/or polycystic ovarian morphology…
- Trial name
- NCT06045351
- Testing
- Vitamin D, Active Comparator
- Where
- Pakistan
- Volunteers
- 142 people, healthy volunteers welcome
- Sponsor
- Aga Khan University
Allergic Rhinitis, Allergic Rhinitis (AR)
Effect of Combined Probiotics and Vitamin D on Symptoms of Allergic Rhinitis
The goal of this clinical trial is to learn if taking probiotics, vitamin D, or both together can help lower symptoms of allergic rhinitis (AR) and improve quality of life in adults.
- Trial name
- NCT07115342
- Testing
- Standard Allergic Rhinitis Treatment, Combined Vitamin D and Probiotics Supplementation
- Where
- Egypt
- Volunteers
- 120 people
- Sponsor
- Tanta University
Irritable Bowel Syndrome (IBS), Vitamin D Deficiency
Role of Vitamin D Supplementation in Children With Irritable Bowel Syndrome
This study was designed to determine whether vitamin D supplementation improved symptoms in children with irritable bowel syndrome, a condition associated with repeated abdominal pain and changes in bowel habits.
- Trial name
- NCT07914478
- Testing
- Vitamin D3
- Where
- Pakistan
- Volunteers
- 48 people
- Sponsor
- Aziz Bhatti Shaheed Teaching Hospital
Diabetes Mellitus, Type 2
Effects of Vitamin D3 and Yeast Beta-Glucan Supplementation on Glycemic Control and Cardiovascular Disease Risk in Patients With Type 2 Diabetes
This study is a randomized, double-blind, placebo-controlled trial involving 2,500 individuals aged 40-79 with type 2 diabetes (T2D).
- Trial name
- NCT06861062
- Testing
- Vitamin D3, yeast β-glucan
- Where
- 5 sites in China
- Volunteers
- 2,500 people
- Sponsor
- Huazhong University of Science and Technology
Hypertensive Disorders of Pregnancy
Vitamin D and Hypertensive Disorders of Pregnancy
The purpose of this study is to further investigate the association between vitamin D deficiency/insufficiency and hypertensive disorders of pregnancy by studying the impact of screening for vitamin D deficiency and…
- Trial name
- NCT07017920
- Testing
- Vitamin D Levels measurement
- Volunteers
- 594 people
- Sponsor
- TriHealth Inc.
Diabetic Nephropathy Type 2
Vitamin D in Diabetic Neuropathy
Introduction Diabetic peripheral neuropathy (DPN) is among the most common chronic complications of diabetes mellitus and represents a major cause of morbidity, impaired quality of life, sleep disturbance, chronic pain, and…
- Trial name
- NCT07644520
- Testing
- Vitamin D
- Volunteers
- 150 people
- Sponsor
- Tanta University
Parkinson Disease
Effect of Vitamin D3 Supplementation on Cardiac Autonomic Nerve Function in Male Parkinson's Disease Patients With Hypovitaminosis D
The goal of this clinical trial is to see the effect of vitamin D3 supplementation on cardiac autonomic nerve function in male Parkinson's disease patients with hypovitaminosis D Main questions it aims to answer are: 1.
- Trial name
- NCT07084597
- Testing
- Vitamin D
- Where
- Bangladesh
- Volunteers
- 15 people
- Sponsor
- Bangladesh Medical University
Vitamin D, Dietary Supplement
Non-inferiority RCT on Fish Waste-Derived vs. Synthetic Vitamin D Supplementation in Healthy Adults With Suboptimal Vitamin D Levels
Vitamin D is a fat-soluble vitamin with hormone-like properties, essential for numerous physiological processes in humans. It plays a central role in maintaining calcium and phosphorus homeostasis, promoting intestinal absorption…
- Trial name
- NCT07127796
- Testing
- Dietary Supplement - Fish-derived Vitamin D, Dietary Supplement - Synthetic Vitamin D
- Volunteers
- 48 people
- Sponsor
- University of Bologna
Healthy Volunteer
Supplementation Absorption Comparison
The goal of this interventional study is to compare the absorption of supplements with and without absorption enhancing technology in healthy volunteers.
- Trial name
- PHAABS (NCT07791797)
- Testing
- Aquacelle® Omega 3, Comparator Omega 3, Plexosome® Vitamin D3
- Where
- Australia
- Volunteers
- 160 people, healthy volunteers welcome
- Sponsor
- RDC Clinical Pty Ltd
Hemodialysis, Chronic Pain
Effects of Multiple Mega-dose of Vitamin D3 Supplementation on Ameliorating Moderate to Severe Chronic Pain in Hemodialysis Patients
Pain is a major complaint in hemodialysis (HD) patients. Concentrations of parathyroid hormone (PTH) >250 pg/ml are associated with chronic pain.
- Conditions
- Hemodialysis, Chronic Pain, Hyperparathyroidism
- Trial name
- NCT05667090
- Testing
- Vitamin D
- Where
- Taiwan
- Volunteers
- 120 people
- Sponsor
- Taipei Medical University Hospital
Glucose Intolerance During Pregnancy
Effects of Vitamin D and Prebiotic Supplementation on Glucose Control During Pregnancy
The goal of this randomized, double-blind, placebo-controlled study included pregnant women at high risk of GDM at 6-15 weeks of gestation is to investigate whether supplementation with vitamin D (1600 IU per day) or prebiotics…
- Trial name
- NCT06553729
- Testing
- Vitamin D3, Prebiotics
- Where
- 2 sites in China
- Volunteers
- 500 people
- Sponsor
- Huazhong University of Science and Technology
PARKINSON DISEASE (Disorder)
Effect of Vitamin D3 on Brain Waves in Male Parkinson's Patients With Low Vitamin D: A qEEG Study
This is an experimental study (Interventional self-controlled trial, pretest-posttest design). The goal of this clinical trial is to evaluate the effect of vitamin D3 supplementation on quantitative EEG in male Parkinson's…
- Trial name
- NCT07096336
- Testing
- vitamin D3 capsule
- Where
- Bangladesh
- Volunteers
- 15 people
- Sponsor
- Bangladesh Medical University
Preeclampsia
Vitamin D3 Supplementation Regimens and Preeclampsia Risk
This study is a randomized controlled trial with two parallel groups connected at Al-Thawra Modern General Hospital in Sana'a, Yemen.
- Trial name
- VitD-PE-RCT (NCT07648706)
- Testing
- Vitamin D3
- Where
- Yemen
- Volunteers
- 268 people
- Sponsor
- Sana'a University
Vitamin D Deficiency, Critical Illness
Early Vitamin D3 Supplementation for Critically Ill Patients
There are no clear international guidelines for dosing vitamin D based on deficiency severity. Therefore, a new clinical trial is needed to evaluate the benefits of early vitamin D supplementation in maintaining sufficient levels…
- Trial name
- NCT05937789
- Testing
- Vitamin D3, Medium Chain Triglycerides (MCT)
- Where
- Taiwan
- Volunteers
- 240 people
- Sponsor
- National Taiwan University Hospital
Acute Stress Reaction
The Efficacy of Vitamin D Supplementation to Sustain Performance Outcomes
The goal of this clinical trial is to find out if vitamin D supplements help healthy adults maintain their cognitive and simple physical task performance and emotional state during highly stressful situations.
- Trial name
- NCT07654777
- Testing
- Vitamin D3 (Cholecalciferol)
- Where
- United States
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Walter Reed Army Institute of Research (WRAIR)
Dental Caries, White Spot Lesion
A Randomized Controlled Trial of Vitamin D Supplementation on Salivary Biomarkers and Cariogenic Oral Microbiome
The goal of this clinical trial is to compare the treatment effect of vitamin D supplementation and topical fluorides in the population having vitamin D deficiency and Initial Carious Lesions (ICL) on the progression of ICL in…
- Conditions
- Dental Caries, White Spot Lesion, Initial Caries, Incipient Enamel Caries
- Trial name
- Incipient (NCT06172764)
- Testing
- Vitamin D supplements along with behavioral modification, Topical fluoride application and Vitamin D supplements along with behavioral modification, Topical fluoride application along with behavioral modification
- Where
- Pakistan
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Dow University of Health Sciences
Symptomatic Uterine Fibroid
Effect of Vitamin D3 Supplementation on Symptomatic Uterine Fibroid in Women With Vitamin D Deficiency
39 women with symptomatic uterine fibroid with serum vitamin D deficiency will receive vitamin D3 supplementation for 6 month.then symptoms and size of fibroid will be re evaluated..
- Trial name
- NCT07012161
- Testing
- Colecalciferol (Vitamin D3) 50000 UI
- Where
- 2 sites in Bangladesh
- Volunteers
- 39 people
- Sponsor
- Nahida Akter
Rotator Cuff Tear
Effect of Vitamin D Supplementation on the Rehabilitation of Patients After Rotator Cuff Tear Repair
Rotator cuff tears are a significant health concern that severely affect shoulder joint mobility in patients. Common clinical manifestations of RCTs include shoulder pain, limited range of motion, joint instability, muscle…
- Trial name
- NCT06984068
- Testing
- Vitamin D
- Where
- Hong Kong
- Volunteers
- 44 people
- Sponsor
- Chinese University of Hong Kong
Healthy Adult Participants, Vitamin D Insufficiency
Supplementation of Cholecalciferol and Related Active Metabolites Through Bioenhancing Layer's Eggs
The purpose of this research is to evaluate if 1) consumption of vitamin D3- or 25(OH)D3-biofortified eggs will increase vitamin D and 25(OH)D status in young adults who consume these bioenhanced eggs, 2) to determine if the gut…
- Trial name
- SCRAMBLE (NCT07859280)
- Testing
- Vitamin D3 bioenhanced eggs, 25(OH)D3 bioenhanced eggs
- Where
- United States
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Cornell University
BPPV, Benign Paroxysmal Positional Vertigo
Clinical Trial of Vit D and Calcium for Recurrent BPPV
Randomized double blind placebo controlled trial of vitamin D supplements, with or without calcium supplementation, versus placebo in reduction of recurrences in BPPV.
- Conditions
- BPPV, Benign Paroxysmal Positional Vertigo, Vertigo, Vertigo, Peripheral
- Trial name
- NCT05863949
- Testing
- vitamin D +/- calcium
- Volunteers
- 860 people
- Sponsor
- Ottawa Hospital Research Institute