Not applicableStudy completedNCT05779410What this trial is testingVitamin D in Healthy Adults After Strenuous Endurance ExerciseWho this might be right forHealthy Taipei Medical University 35
Not applicableNot Yet RecruitingNCT06995586What this trial is testingDietary Supplements in Patients With Coronary Artery Bypass Grafting for Improving the Quality of Healthcare Delivery.Who this might be right forCardio-pulmonary BypassCardiovascular DiseasesOmega-3 Polyunsaturated Fatty Acids+11 more Nicosia General Hospital 108
Early research (Phase 1)UnknownNCT06186154What this trial is testingVitamin B12 and Folinic Acid Supplementation in Mitochondrial DNA Deletion SyndromesWho this might be right forMitochondrial DNA DeletionMacrocytosis University of British Columbia 25
Testing effectiveness (Phase 2)Ended earlyNCT01198548What this trial is testingHigh-Dose Cholecalciferol in Treating Patients Receiving Combination Chemotherapy and Bevacizumab as First-Line Therapy For Metastatic Colorectal CancerWho this might be right forStage IV Colon CancerStage IV Rectal Cancer Roswell Park Cancer Institute 10
Post-approval studies (Phase 4)Study completedNCT01741181What this trial is testingVitamin D Supplementation in Patients With Diabetes Mellitus Type 2Who this might be right forDiabetes Mellitus Type 2Vitamin D Deficiency Tan Tock Seng Hospital 64
Not applicableUnknownNCT00162409What this trial is testingRelationship Between Folic Acid and Warfarin Metabolism and EffectWho this might be right forFolic Acid Deficiency Hadassah Medical Organization 400
Not applicableStudy completedNCT00857831What this trial is testingVitamin D and Calcium StudyWho this might be right forSpinal Cord Injury US Department of Veterans Affairs 10
Not applicableStudy completedNCT05995522What this trial is testingEffect of Vitamin K2 Over Osteocalcin, Leptin, Cytokines, and Cardiovascular Risk in Young Adults With Overweight and ObesityWho this might be right forOverweight and ObesityCardiometabolic Risk Factors University of Guadalajara 51
Not applicableStudy completedNCT03892395What this trial is testingAn Intervention Study to Investigate the Effect of B-vitamin Supplementation for 2-years on Bone HealthWho this might be right forBone Health University College Dublin 240
Large-scale testing (Phase 3)Study completedNCT01585051What this trial is testingEffect of Vitamin D Supplementation on Blood Pressure and HbA1c Levels in Patients With T2DWho this might be right forDiabetes Mellitus Type 2 Kantonsspital Baselland Bruderholz 51
Testing effectiveness (Phase 2)UnknownNCT04920760What this trial is testingVitamin A Supplementation in Children With Moderate to Severe COVID-19Who this might be right forCovid19 Shiraz University of Medical Sciences 60
Not applicableStudy completedNCT05506696What this trial is testingVitamin D Supplementation StudyWho this might be right forColorectal CancerVitamin D Deficiency University of Edinburgh 122
Not applicableStudy completedNCT01215682What this trial is testingVitamin D Supplementation and Upper Respiratory Tract Infections in Adolescent SwimmersWho this might be right forUpper Respiratory Tract Infections Sheba Medical Center 82
Not applicableStudy completedNCT01079923What this trial is testingPilot Pharmacokinetic Study of Daily Versus Monthly High-Dose Cholecalciferol SupplementationWho this might be right forHealthy Volunteers Mayo Clinic 40
Not applicableStudy completedNCT00783159What this trial is testingFit in the Aged by Professional TrainingWho this might be right forFrailtySarcopenia University of Erlangen-Nürnberg Medical School 69
Not applicableStudy completedNCT01288950What this trial is testingVitamin D Supplementation Enhances Immune Response to Bacille-Calmette-Guerin (BCG) Vaccination in InfantsWho this might be right forTuberculosis University of California, San Diego 49
Testing effectiveness (Phase 2)UnknownNCT03320915What this trial is testingEfficacy and Safety of High Dose Vitamin D Supplementation in Patients Undergoing HSCTWho this might be right forHematologic Neoplasms Seoul National University Hospital 88
Large-scale testing (Phase 3)Study completedNCT04579640What this trial is testingTrial of Vitamin D to Reduce Risk and Severity of COVID-19 and Other Acute Respiratory InfectionsWho this might be right forCovid19Acute Respiratory Tract Infection Queen Mary University of London 6,200
Large-scale testing (Phase 3)UnknownNCT04386850What this trial is testingOral 25-hydroxyvitamin D3 and COVID-19Who this might be right forCOVID 19 Tehran University of Medical Sciences 1,500
Large-scale testing (Phase 3)UnknownNCT02873364What this trial is testingHigh Dose Vitamin D Supplementation in Chronic Spontaneous UrticariaWho this might be right forUrticaria Shiraz University of Medical Sciences 80