Not applicableStudy completedNCT02495584What this trial is testingD-Light InterventionWho this might be right for25-hydroxyvitamin D Concentration (Vitamin D Status) University of Ulster 52
Not applicableStudy completedNCT00267540What this trial is testingThe Effect of Vitamin D on Bone Accretion and Turn-Over in Young GirlsWho this might be right forVitamin D Deficiency University of Copenhagen 225
Not applicableStudy completedNCT01692028What this trial is testingIdentification of the Region of Vitamin D ResponsivenessWho this might be right forDiabetesHypertension Creighton University 4,116
Not applicableLooking for participantsNCT07385144What this trial is testingA Dietary Supplement on Serum Biomarkers in ChildrenWho this might be right forNutritional StatusSerum Biomarkers SF Research Institute, Inc. 30
Not applicableLooking for participantsNCT06697626What this trial is testingValidation of a Novel Functional Food Designed to Meet the Nutritional Needs of People Living With Parkinson's DiseaseWho this might be right forConstipationParkinson Disease University of Ulster 56
Not applicableStudy completedNCT06115356What this trial is testingHypovitaminosis D and "Metabolic" Inflammatory Status in Patients With ObesityWho this might be right forHypovitaminosis DObesity University of Trieste 208
Post-approval studies (Phase 4)Study completedNCT00417404What this trial is testingVitamin A and Very Low Birthweight Babies (VitAL)Who this might be right forPreterm BirthRetinopathy of Prematurity Glasgow Royal Infirmary 94
Not applicableUnknownNCT02404519What this trial is testingVitamin K2 Effect on Vascular Stiffening in Subjects With a Poor Vitamin K-statusWho this might be right forVascular Stiffness Maastricht University Medical Center 240
Not applicableUnknownNCT03194724What this trial is testingUsing Stable Isotope Techniques to Monitor & Assess the Vitamin A Status of Children Susceptible to InfectionWho this might be right forAssessment of Vitamin A Status of Children National Food Technology Research Centre, Botswana 120
Testing effectiveness (Phase 2)UnknownNCT03963479What this trial is testingVitamin B6 and Magnesium- A Clinical Trial on ASD PatientsWho this might be right forAutism Spectrum Disorder Bangabandhu Sheikh Mujib Medical University, Dhaka, Bangladesh 50
Not applicableStudy completedNCT02714361What this trial is testingInvestigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient WomenWho this might be right forIron DeficiencyAnemia; Deficiency, Nutritional, With Poor Iron AbsorptionVitamin D Deficiency University of Chester 50
Not applicableStudy completedNCT01814891What this trial is testingDetermination of Changes in Total Body Stores of Vitamin A in Response to Orange Maize Consumption by Zambian ChildrenWho this might be right forVitamin A Status With Maize Feeding University of Wisconsin, Madison 143
Testing effectiveness (Phase 2)Study completedNCT01045980What this trial is testingAssessment of Bioimpedance and Vitamin D and LV Mass in PD Patients (FLUID Study)Who this might be right forDisorders Associated With Peritoneal Dialysis St. Joseph's Healthcare Hamilton 74
Not applicableStudy completedNCT01074541What this trial is testingThe Vitamin D Dose-Response RelationshipWho this might be right forVitamin D Status Bispebjerg Hospital 55
Not applicableStudy completedNCT06970821What this trial is testingAssociation of Vitamin D Status With Metabolic Markers in Adolescents With Polycystic Ovary SyndromeWho this might be right forPolycystic Ovary SyndromeVitamin D DeficiencyInsulin Resistance Bagcilar Training and Research Hospital 106
Large-scale testing (Phase 3)Study completedNCT01695148What this trial is testingEfficacy of β-carotene Biofortified Maize in Reducing Vitamin A Deficiency Among ChildrenWho this might be right forVitamin A DeficiencyLow Serum Retinol Johns Hopkins Bloomberg School of Public Health 1,228
Not applicableStudy completedNCT02373033What this trial is testingFolate-Rich Foods Improve Folate StatusWho this might be right forFolic Acid Deficiency Mansoura University 57
Not applicableStudy completedNCT01672099What this trial is testingEffects of Dairy on Vitamin K-statusWho this might be right forVitamin K-statusVascular Health Maastricht University Medical Center 62
Not applicableStudy completedNCT03521492What this trial is testingVitamin D Status With Early Childhood CariesWho this might be right forEarly Childhood Caries, Vitamin D Deficiency Ministry of Health, Saudi Arabia 60
Not applicableEnrolling By InvitationNCT07349290What this trial is testingVitamin D (Bio)Fortified Shopping Baskets to Improve Vitamin D StatusWho this might be right forVitamin D BiofortificationVitamin D FortificationVitamin D Status University of Ulster 160