Clinical trials: Vitamin Supplementation
Perimenopause, Perimenopausal Women
12-week Multi-vitamin/Mineral Supplementation on Peri-menopause Symptoms, Cognition, Sleep, and Psychological Well-being.
Perimenopause is a stage of transition into menopause that is marked by menopausal symptoms while menstruation is still taking place.
- Conditions
- Perimenopause, Perimenopausal Women, Perimenopause, Climacteric Syndrome
- Trial name
- NCT07242430
- Testing
- Multivitamin/mineral supplement
- Where
- United Kingdom
- Volunteers
- 58 people, healthy volunteers welcome
- Sponsor
- Northumbria University
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 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
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
Vitamin D2 Supplementation in Vitamin D Insufficiency
Optimal Doses of Ergocalciferol Supplementation for Treatment of Hypovitaminosis D in Adults
To investigate the optimal initial and maintenance doses of vitamin D2 supplementation for the treatment of vitamin D insufficiency in Thai adults, and to determine the prevalence of and risk factors for hypovitaminosis D among…
- Trial name
- NCT03228862
- Testing
- Ergocalciferol
- Where
- Thailand
- Volunteers
- 360 people, healthy volunteers welcome
- Sponsor
- Chulalongkorn University
Respiratory Tract Infections
Vitamin D Supplementation for the Prevention of Acute Respiratory Tract Infections
The investigators earlier clinical study in 754 young Finnish men demonstrated a significant negative association of serum 25-OHD concentration with acute respiratory tract infections.
- Trial name
- NCT00973583
- Testing
- vitamin D
- Where
- Finland
- Volunteers
- 164 people, healthy volunteers welcome
- Sponsor
- Tampere University
Frailty, Physical Disability
Vitamin D and Calcium Supplementation at Danish Nursing Homes
Nursing home residents are in high risk of vitamin D deficiency, which negatively affects bone health. Vitamin D and calcium supplements have shown to increase bone density and reduce fracture risk and may affect daily physical…
- Conditions
- Frailty, Physical Disability, Aging, Muscle Weakness
- Trial name
- NCT04956705
- Testing
- Vitamin D and calcium
- Where
- 2 sites in Denmark
- Volunteers
- 109 people, healthy volunteers welcome
- Sponsor
- University College Copenhagen
Coronary Artery Calcification, Arterial Stiffness
The InterVitaminK Trial - Effects of Vitamin K Supplementation on Cardiovascular, Metabolic, and Bone Health
The purpose of this study is to examine the effect of menaquinone-7 (MK-7) supplementation on cardiovascular, metabolic, and bone health.
- Trial name
- InterVitaminK (NCT05259046)
- Testing
- Menaquinone-7 (MK-7) tablet (333 µg)
- Where
- Denmark
- Volunteers
- 450 people, healthy volunteers welcome
- Sponsor
- Bispebjerg Hospital
Macular Degeneration
Lutein/Zeaxanthin and Omega-3 Supplementation in Persons Over Age 60
This study will explore whether taking the vitamins lutein and zeaxanthin, with or without Omega-3 fatty acid (fish oil or docosahexanoic acid, also known as DHA) will change the amount of lutein and zeaxanthin in the blood among…
- Trial name
- NCT00121589
- Testing
- Lutein
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- National Eye Institute (NEI)
Multiple Sclerosis, Relapsing-remitting
Pharmacokinetics of Vitamin D in Multiple Sclerosis and in Health
This is a pilot study of oral vitamin D supplementation to determine if patients with Multiple Sclerosis (MS) and healthy individuals attain a similar increase in serum 25-hydroxyvitamin D levels.
- Trial name
- NCT01667796
- Testing
- Vitamin D3
- Where
- 2 sites in United States
- Volunteers
- 57 people, healthy volunteers welcome
- Sponsor
- Johns Hopkins University
Effect of Food Supplement
Effects of Vitamin C Enriched Hydrolyzed Collagen, PrimaColl™, Whey Protein, or Placebo on Collagen Synthesis
The purpose of this study is to determine the effects of repeated dosing vitamin C enriched hydrolyzed collagen (HC) over a 24hr period, compared to PrimaColl™ (PC), whey protein (WP) and placebo (PL), with prescribed exercise on…
- Trial name
- NCT05427279
- Testing
- Hydrolized Collagen, PrimaColl, Whey protein
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of California, Davis
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 B 12 Deficiency
Cobalamin Supplementation During Infancy; Effect on B-vitamin Status, Growth and Psychomotor Development
Adequate levels of vitamin B12 (cobalamin) is necessary for normal growth and development in infants. We have earlier investigated cobalamin status in healthy children and we observed metabolic evidence of impaired cobalamin…
- Trial name
- NCT00479479
- Testing
- Hydroxycobalamin (Vitamin B12 Depot, Nycomed Pharma)
- Where
- Norway
- Volunteers
- 107 people, healthy volunteers welcome
- Sponsor
- Haukeland University Hospital
Muscle Function, Muscle Soreness
Vitamin D2, Muscle Damage, NASCAR Pitcrew
Hypothesis: Six weeks of supplementation with vitamin D (4000 IU/day) using Dole's Vitamin D Portobello Mushroom Powder will increase winter serum vitamin D levels, and improve muscle function and strength, and innate immunity…
- Conditions
- Muscle Function, Muscle Soreness, Vitamin D Status
- Trial name
- NCT01825616
- Testing
- Vitamin D2 mushroom powder
- Where
- 3 sites in United States
- Volunteers
- 33 people, healthy volunteers welcome
- Sponsor
- Appalachian State University
Hypovitaminosis D
Vitamin D Supplementation in Younger Women
That on average it will require a vitamin D dose of 1700IU/day to increase the serum 25hydroxyvitamin D level from 20 to 30ng/ml in young Caucasian women and a dose of 1860 to 2480 IU/day in African American
- Trial name
- VITADAS (NCT00662844)
- Testing
- vitamin D3
- Volunteers
- 198 people, healthy volunteers welcome
- Sponsor
- Creighton University
Maternal Vitamin D Status
Vitamin D Supplementation and Pregnancy Outcomes
Groups (group 1 receives 1000 IU vitamin D and group 2 receives 2000 IU vitamin D) through a random allocation. It is necessary to mention that all cases in each group could be able to receive the current supplementation during…
- Trial name
- NCT03308487
- Testing
- vitamin D3 (1000 IU), Vitamin D3 (2000 IU)
- Where
- Iran
- Volunteers
- 84 people, healthy volunteers welcome
- Sponsor
- Tirang R. Neyestani, Ph.D.
COVID-19 Respiratory Infection
Role of Vit-D Supplementation on BioNTech, Pfizer Vaccine Side Effect and Immunoglobulin G Response
The goal of this clinical trial study is to investigate the role of anthropometric indices and Vit-D supplementation on BioNTech, Pfizer vaccine side effect and immunoglobulin G response against SARS-CoV-2 in individuals infected…
- Trial name
- NCT05851313
- Testing
- Vitamin-D
- Where
- Iraq
- Volunteers
- 500 people, healthy volunteers welcome
- Sponsor
- Sulaimani Polytechnic University
Vitamin D Deficiency
Effects of Vitamin D Dose and Genotype of the Binding Protein in Infants and Children
The purpose of this study is to determine if the vitamin D binding protein genotype influences circulating vitamin D levels and if it may have functional consequences on vitamin D activity.
- Trial name
- VitaD (NCT01050387)
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 193 people, healthy volunteers welcome
- Sponsor
- Yale University
Healthy Participants
Influenza Virus Vaccine Plus Vitamin A and D Supplements for Prevention of Respiratory Virus Infections in Children
Children are particularly vulnerable to respiratory virus infections, especially influenza. Vitamin A \& D deficiencies are associated with vulnerability to infectious diseases of the respiratory tract.
- Trial name
- NCT02649192
- Testing
- Influenza virus vaccine, Vitamins A and D
- Where
- United States
- Volunteers
- 87 people, healthy volunteers welcome
- Sponsor
- St. Jude Children's Research Hospital