Clinical trials: Deficiency Vitamins
Early Childhood Caries, Vitamin D Deficiency
Vitamin D Status With Early Childhood Caries
Studies that give people vitamin D supplements to prevent caries have found that vitamin D is effective at preventing the development of caries.
- Trial name
- NCT03521492
- Testing
- serum vitamin D , calcium , parathyroid hormone and albumin level
- Where
- Saudi Arabia
- Volunteers
- 60 people, healthy volunteers welcome
- Sponsor
- Ministry of Health, Saudi Arabia
Vitamin B 12 Deficiency
Effects of Vitamin B12 Treatment in Singers
In this study, the investigators aim to assess if vitamin B12 treatment demonstrates a beneficial effect on voice performance. If so, they wish to examine the relationship between the vitamin B12 treatment and the study…
- Trial name
- NCT03437824
- Testing
- Cyanocobalamin
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- University of Southern California
Vitamin K Deficiency
Incorporation of Vitamin K Into Uremic Lipoproteins
Chronic kidney disease (CKD) patients have an increased cardiovascular risk with corresponding cardiovascular calcifications. CKD patients exhibit a functional vitamin K deficiency.
- Trial name
- NCT05360342
- Testing
- Vitamin K supplement
- Where
- Germany
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- RWTH Aachen University
Vitamin D Deficiency
Vitamin D and Muscle Strength and Surface (Electromyography) EMG
Vitamin D deficiency is widely prevalent in India. Serum 25(OH)D levels are <20 ng /ml in up to 90% of them. Recently, in a randomized control trial, investigators have shown that dual cholecalciferol and calcium supplementation…
- Trial name
- NCT01190683
- Testing
- Cholecalciferol, Calcium Carbonate, cholecalciferol and calcium carbonate
- Volunteers
- 170 people, healthy volunteers welcome
- Sponsor
- Indian Council of Medical Research
Precursor Cell Lymphoblastic Leukemia-Lymphoma, Vitamin D Deficiency
Nutrition and Body Composition in Acute Lymphoblastic Leukemia
Many adolescents with acute lymphoblastic leukemia (ALL) have been found to have low bone density by the end of treatment. This can lead to long-term suffering in survivors due to poor bone health.
- Trial name
- NCT01317940
- Testing
- Vitamin D and Calcium Citrate
- Where
- United States
- Volunteers
- 76 people, healthy volunteers welcome
- Sponsor
- Children's Hospital Los Angeles
Folic Acid Deficiency
Folate-Rich Foods Improve Folate Status
This study evaluates the effects of folate-rich foods regarding improvement of folate status compared with folic acid supplement.
- Trial name
- Folatefood (NCT02373033)
- Testing
- Natural food folate, Folic acid, Apple juice
- Where
- Egypt
- Volunteers
- 57 people, healthy volunteers welcome
- Sponsor
- Mansoura University
Folate Deficiency
Food and Alcohol Behavior Study: Meaningful Enhancement
This study will determine how folate supplementation affects both serum and red blood cell folate status in females ages 18 -24 years old.
- Trial name
- FAB:ME (NCT04095052)
- Testing
- Methyl Folate
- Where
- United States
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Oklahoma State University Center for Health Sciences
Hot Flushes, Menopause, Premature
The Role of Vitamin D in Menopause: Relationship to Menopausal Symptoms in Body Composition
Specific Aim 1: To compare effects of Vitamin D supplementation to usual care on symptoms in women transitioning to early postmenopause and determine the associated effect size in order to conduct a power analysis for a future…
- Conditions
- Hot Flushes, Menopause, Premature, Obesity, Vitamin D Deficiency
- Trial name
- FLASH (NCT01141972)
- Testing
- Vitamin D
- Where
- United States
- Volunteers
- 23 people, healthy volunteers welcome
- Sponsor
- Kaiser Permanente
Medication and Supplement Use, Pregnant Women
A Cross-sectional Study Evaluating Pregnancy Related Use of Vitamins and Medication
This cross-sectional study will try to give answers to the following project aims: To provide an overview of the prevalence of health products' use among Belgian pregnant women (prescription and OTC medication, vitamin…
- Trial name
- PREVIM (NCT03105583)
- Testing
- Medication use during pregnancy, Supplement use during pregnancy, Vitamin status of a pregnant woman
- Volunteers
- 381 people, healthy volunteers welcome
- Sponsor
- KU Leuven
Vitamin A Deficiency
The Efficacy of Pro-vitamin A Biofortified Cassava on Vitamin A Status in Nigerian Preschool Children
The study comprises an open-label randomized controlled trial investigating the efficacy of consuming a daily ration of pro-vitamin A biofortified cassava on vitamin A status of Nigerian children, aged 3-4 years old (n=200).
- Trial name
- CASSAVITA II (NCT02627222)
- Testing
- Pro-vitamin A biofortified cassava, White cassava
- Where
- Nigeria
- Volunteers
- 176 people, healthy volunteers welcome
- Sponsor
- Wageningen University
Obesity, Vitamin D Deficiency
Vitamin D and Vascular Health in Children
In this study, we will test the central hypothesis that enhancement of vitamin D status in obese and overweight children will improve their vascular health and their cardiovascular disease (CVD) and metabolic syndrome risk…
- Trial name
- NCT01797302
- Testing
- Vitamin D3
- Where
- United States
- Volunteers
- 225 people, healthy volunteers welcome
- Sponsor
- University of Pittsburgh
Vitamin D Deficiency
Impact of Vitamin D Status on Bones in Breastfed Infants
Vitamin D deficiency is widespread and linked to decreased bone mineral content. Little data exists regarding the vitamin D status and the relationship of 25-hydroxyvitamin D (25-OHD) status to functional bone health outcomes in…
- Trial name
- NCT00697294
- Testing
- Tri-Vi-Sol
- Where
- 3 sites in United States
- Volunteers
- 80 people, healthy volunteers welcome
- Sponsor
- Baylor College of Medicine
Post-COVID-19 Syndrome, Long COVID
Magnesium and Vitamin D Combination for Post-COVID Syndrome
The goal of this double-blind randomized controlled clinical trial is to determine the efficacy of the administration of magnesium chloride + vitamin D as an adjuvant in the treatment of post-Coronavirus Disease (COVID) syndrome.
- Conditions
- Post-COVID-19 Syndrome, Long COVID, Vitamin D Deficiency, Magnesium Deficiency
- Trial name
- NCT05630339
- Testing
- Magnesium chloride, Vitamin D
- Where
- Mexico
- Volunteers
- 150 people, healthy volunteers welcome
- Sponsor
- Coordinación de Investigación en Salud, Mexico
Vitamin D Deficiency
Bioavailability of Vitamin D Encapsulated in Casein Micelles, Compared to Its Bioavailability in a Synthetic Emulsifier Currently Used for Supplementation and Enrichment.
Background: Vitamin D3 (VD) is an oil soluble vitamin formed in the skin during exposure to UV light. It is essential for bone and calcium metabolism, insulin reactivity, immune system etc.
- Trial name
- VD (NCT01807845)
- Testing
- enriched skimmilk with VD, Skimmilk enriched with VD wherein the VD will be emulsified using Tween 80
- Where
- Israel
- Volunteers
- 90 people, healthy volunteers welcome
- Sponsor
- Rambam Health Care Campus
Iron Deficiency (Without Anemia), B12 Deficiency Vitamin
Hydroponic Fortification and Dietary App Effect on Nutrients Level (Harvest)
Veganism and vegetarianism have clear benefits where they have a lower risk of many health issues. However, they also have a higher risk of nutrients and vitamin deficiency such as iron and vitamin B12.
- Trial name
- NCT05740462
- Testing
- Recipes consumption, Hydroponic unit
- Where
- United Kingdom
- Volunteers
- 52 people, healthy volunteers welcome
- Sponsor
- Quadram Institute Bioscience
Hypovitaminosis D, Cardiovascular Diseases
Effect of vitaminD3 or 25(OH)D3 Fortified Dairy on Vitmain D Status and CVD Risk Markers
This study aims to compare the acute effect of consuming milk and butter fortified with either vitamin D3 or 25 (OH) D3 on serum/plasma vitamin D status in humans.
- Trial name
- NCT02535910
- Testing
- vitamin D3, 25(OH) D3, Control
- Where
- United Kingdom
- Volunteers
- 18 people, healthy volunteers welcome
- Sponsor
- University of Reading
Osteogenesis Imperfecta, Rare Bone Disorders
Morphology in Oral Rare Syndromes & Artificial Intelligence for Clinical Diagnosis
MOSAIC aims to determine whether oro-dental morphological anomalies, particularly palatal morphology, associated with rare bone and cartilage diseases can be precisely characterized using 3D digital models analysed through…
- Conditions
- Osteogenesis Imperfecta, Rare Bone Disorders, Hypophosphatemia, X-Linked
- Trial name
- MOSAIC (NCT07666269)
- Testing
- intra-oral 3D optical impression
- Where
- France
- Volunteers
- 240 people, healthy volunteers welcome
- Sponsor
- University Hospital, Bordeaux
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
Cobalamin Deficiency
Effect of Toothpaste Fortified With Cyanocobalamin on Vitamin B12 Status
A 3 months randomized, placebo-controlled study on the effect of toothpaste fortified with vitamin B12 on vitamin B12 status markers and related metabolic markers.
- Trial name
- NCT02679833
- Testing
- Cyanocobalamin
- Where
- 2 sites in Germany
- Volunteers
- 180 people, healthy volunteers welcome
- Sponsor
- Universität des Saarlandes
Vitamin B12 Deficiency
Supplementary Vitamin B12 Effects on Elevated Homocysteine Levels of Vegetarians - Clinical Trial
Vegetarians are known to be deficient in vitamin B12, due to a lack or absence of dietary animal produce, which can elevate homocysteine.
- Trial name
- NCT01661309
- Testing
- Inactive lozenge, Methylcobalamin
- Where
- United Kingdom
- Volunteers
- 50 people, healthy volunteers welcome
- Sponsor
- University of West London