Vitamins: all 2,138 studies that test it
Page 7 of 22. Open to participants first (190), then studies with results posted, then the rest; newest registration first within each.
- Effect of Vitamin D on Cardiometabolic Risk in Chinese AdolescentsCompletedNCT07053657Not applicable
- Curcumin, Vitamin D and Green Tea in IBS-DCompletedNCT07052890Not applicable
- Does Vitamin C Improve Postoperative HealingCompletedNCT07012564Not applicable
- Preoperative Correction of Vitamin D Deficiency in Total Joint Arthroplasty (TJA)Active, not recruitingNCT07006714Phase 4
- Impact of Vitamin C on Pain Detection and Tolerance ThresholdCompletedNCT06971315Not applicable
- Effect of Oral Vitamin D3 and Calcium Supplementation on Muscle and Bone Health Among Rural Post-menopausal WomenCompletedNCT06900387Not applicable
- High-dose Intravenous Vitamin C for the Treatment of Severe Acute PancreatitisActive, not recruitingNCT06897384Not applicable
- Effects of Vitamin D and Calcium on Hyperglycemia and Dyslipidemia in Patients Gestational DiabetesCompletedNCT06896669Not applicable
- Effect of Vitamin D Deficiency on the Structure of Titanium Platelet-Rich FibrinCompletedNCT06870786Not applicable
- The Effect of Nutritional Supplementation on Actinic Purpura: A Pilot StudySuspendedNCT06840574Not applicable
- Efficacy and Safety of Intravenous Vitamin K1 in Management of Acute Variceal BleedingCompletedNCT06839352Phase 4
- Ischemic Stroke Nutrition Intervention StudyActive, not recruitingNCT06817512Not applicable
- Change in Omega 3 Index in Healthy Adults With OmeGo or a Standard Omega-3 Oil SupplementCompletedNCT06802068Not applicable
- Role of Vitamin C Infusion in Postoperative Mechanically Ventilated Neonates With SepsisCompletedNCT06780345Not applicable
- Effect of Preoperative Vitamin D Supplementation in Liver Transplant Recipients With Vitamin D Deficiency on Post Transplant OutcomesCompletedNCT06736093Not applicable
- Effects of Vitamin C on Shock Duration and Microcirculation in Patients With Vasoplegia Syndrome After Cardiac SurgeryCompletedNCT06723626Not applicable
- Impact of Vitamin D in Rheumatoid ArthritisCompletedNCT06716476Phase 4
- The Effect of Vitamin D3 Supplementation on Hepcidin and Ferritin Serum Levels in Children With Chronic Kidney DiseaseCompletedNCT06706271Phase 2/3
- Validation of a Novel Functional Food Designed to Meet the Nutritional Needs of People Living With Parkinson's DiseaseActive, not recruitingNCT06697626Not applicable
- Vitamin D and SGLT-2 Inhibitor in CPAP-naive Obstructive Sleep ApneaCompletedNCT06690723Phase 3
- Effect of Vitamin D Supplementation on Severity of Stress Urinary Incontinence in Premenopausal Women With Vitamin D InsufficiencyCompletedNCT06689813Not applicable
- The Effect of Adjunct Vitamin a on Community-Acquired Pneumonia in Southern Iranian Children: a Randomized Clinical TrialCompletedNCT06677684Not applicable
- Effect of Vitamin D Supplementation as Adjuvant Therapy in Neonatal Jaundice in Combination With PhototherapyCompletedNCT06650293Not applicable
- The Impact of Vitamin D Supplementation in Hypertensive Vitamin D Deficient Patients.CompletedNCT06645041Not applicable
- Acute Vitamin D Supplementation on Testosterone in FemalesActive, not recruitingNCT06610968Not applicable
- Effectiveness and Safety of Two Vitamin D3 Supplementation Regimens in Adults with Early-stage COVID-19CompletedNCT06585995Not applicable
- Clinical Relationship Between Vitamin D-mediated Th17 and Treg Cells and Parkinson's DiseaseCompletedNCT06539260Early Phase 1
- Assessment of the Remineralization Efficacy of Vitamin D in the Treatment of MIH. In Vitro Study and In Situ Randomized Double-Blind Placebo Clinical Trial.CompletedNCT06515548Phase 1
- Vitamin E Supplementation for Children With Transfusion Dependent Beta Thalassemia on Different Iron Chelation RegimenCompletedNCT06509581Not applicable
- Efficacy and Safety of Vitamin D Supplementation Combined With Alarm Therapy in Treating Nocturnal EnuresisCompletedNCT06508333Not applicable
- Efficacy and Mechanism of High-Dose Vitamin D Supplementation in Pediatric OAB-Dry: A Randomized Clinical Trial Integrating Urinary Myelin Basic Protein as a Theranostic BiomarkerCompletedNCT06489951Not applicable
- Effect of Vitamin D Supplementation on Glutathione Peroxidase (GPx) Activity, Interleukin-6 (IL-6) Levels and Clinical Outcomes in Post-COVID-19 PatientsCompletedNCT06419712Not applicable
- Vitamin D in Armenia: Vitamin D Repletion Strategies With Dibase, and Vitamin D and Vitamin D Binding Protein and COVIDCompletedNCT06406543Not applicable
- The Role of Vitamin K on Knee Osteoarthritis OutcomesActive, not recruitingNCT06385275Phase 1/2
- Effects of Vitamin D3 and Prebiotics Supplementation on Cardiovascular Risk Factors in Patients With Type 2 DiabetesCompletedNCT06351566Not applicable
- Comparison Between IPRF With Vit. C and IPRF Alone in Management of ID'PainCompletedNCT06345092Not applicable
- The Effectiveness of Combining Ursodeoxycholic Acid With Vitamin D in Treating Patients With Primary Biliary CholangitisCompletedNCT06309589Not applicable
- Effect of Vitamin D Injection on Hypertrophic Scars and KeloidsCompletedNCT06301178Phase 1/2
- Effect of Vitamin D on Skeletal Muscle Function and Qol in Patients With Chronic Intestinal Failure/InsufficiencyCompletedNCT06283615Not applicable
- Comparıson Of Electromyography Results Before And After Vıtamın D Treatment In Patıents Wıth Carpal Tunnel SyndromeCompletedNCT06282640Phase 4
- Vitamin D & Levothyroxine Combination Versus Levothyroxine on Lipid Profile in HypothyroidismCompletedNCT06276205Phase 3
- The Effect of Vitamin D Supplementation on Dental Implant Osseointegration: A Randomized Controlled TrialCompletedNCT06274216Not applicable
- High Dose Vitamin D Supplementation in Children With Sickle Cell DiseaseCompletedNCT06274203Not applicable
- Vitamin D in OUD: Exploration of Alterations on the Dopamine D2/D3 Receptor SystemCompletedNCT06261905Phase 1
- An Evaluation of the Effect of Vitamin D Supplementation on Depressive Symptoms Among Chinese Early AdolescentsCompletedNCT06247930Not applicable
- Psychoneuromentalism Disorder: A Medical Condition That Affects People With Psychological Impairments From Health IssuesStatus unknownNCT06235177Early Phase 1
- Vitamin C Deficiency in Septic ShockCompletedNCT06224881Phase 4
- Role of Vitamin E in Gaucher Disease PatientsCompletedNCT06211478Phase 3
- Vitamin D Sulfates in BreastmilkCompletedNCT06203041Not applicable
- Synergistic Effect of Vitamin E & D in Reducing Risk of Effects Associated With Atypical Anti-psychoticsCompletedNCT06200584Not applicable
- Blessing or Curse? Combined Vitamin Therapy in Non Viral Septic Shock.CompletedNCT06152458Phase 4
- Comparative Evaluation of the Effectiveness of Diclofenac Sodium Versus Vitamin D on Myofascial PainCompletedNCT06111573Phase 4
- Effect of Vitamin D Supplementation on Testosterone Level in Women With Polycystic Ovary SyndromeCompletedNCT06101147Phase 2
- Supplementation With Vitamin D3 on Chronic Low Back Pain PatientCompletedNCT06082375Not applicable
- The Impact of Oral Vitamin C in Prevention for Post Operative Atrial Fibrillation (POAF) in Coronary Artery Bypass Surgery (CABG) PatientsActive, not recruitingNCT06074367Phase 4
- The Effect of Vitamin D3 Therapy on Vitamin D Status in Pregnant Women With Vitamin D Deficient and InsufficientActive, not recruitingNCT06054919Phase 2/3
- Vitamin C to Chemotherapy Related Anemia in Pancreatic CancerActive, not recruitingNCT06018883Phase 3
- Comparison of Bioavailability of Liposomal and Traditional Formulation of Vitamin D3CompletedNCT06010121Not applicable
- Effect of Vitamin K2 Over Osteocalcin, Leptin, Cytokines, and Cardiovascular Risk in Young Adults With Overweight and ObesityCompletedNCT05995522Not applicable
- Role of Vitamin E in Reducing Dry SocketCompletedNCT05984173Phase 4
- A Study of the Feasibility of Using the Dietary Supplement "ARTNEO" in Patients With OsteoathritisCompletedNCT05975879Not applicable
- The Effect of Vitamin C for Iron Supplementation During Pregnancy with Risk of AnemiaCompletedNCT05975125Not applicable
- Role of Vitamin D Therapy in Recovery From Early Neonatal Sepsis (Randomized Controlled Trial)CompletedNCT05969327Phase 3
- A Study to Compare Liposomal Iron With Ferrous Ascorbate in the Treatment of Iron Deficiency Anemia in ChildrenStatus unknownNCT05957328Phase 3
- Cholecalciferol Supplementation in Hemodialysis PatientsCompletedNCT05922696Phase 2/3
- Supplementation and Depressive Symptomatology Incidence Among Saudi Arabian AdultsCompletedNCT05916053Not applicable
- Vitamin C Effectiveness in Preventing Urinary Tract Infections After Gynecological SurgeriesCompletedNCT05913180Phase 2
- The Effect of Supplementation of Vitamin D3 on Inflammation Induced by 100 km Running, Iron Metabolism and ErythropoiesisCompletedNCT05880030Not applicable
- Role of Vit-D Supplementation on BioNTech, Pfizer Vaccine Side Effect and Immunoglobulin G ResponseCompletedNCT05851313Phase 3
- Adjunctive Intravenous Ascorbic Acid for Advanced Non-Small Cell Lung CancerTerminatedNCT05849129Phase 2
- Comparison of Bioavailability of Liposomal and Traditional Formulation of Vitamin CCompletedNCT05843617Not applicable
- Vitamin c Supplementation in the Prevention of CRPS Following Distal Radius FracturesCompletedNCT05842395Phase 4
- Comparative Evaluation of Vitamin C and Injectable-platelet Rich Fibrin in the Management of Thin Gingival PhenotypeStatus unknownNCT05841303Phase 4
- Semaglutide in Nonalcoholic Fatty Liver DiseaseCompletedNCT05813249Phase 4
- The Genetic Effects on Vitamin D SupplementationStatus unknownNCT05802433Not applicable
- Efficacy of Vitamin D Supplementation for Children With BronchiolitisCompletedNCT05795933Phase 2/3
- Adjunctive Oral Systemic Vitamin E Therapy on Salivary Nitric Oxide Level in Patients With Erosive Oral Lichen PlanusCompletedNCT05787925Not applicable
- Vitamin D Supplementation in Healthy Adults in Prolonged Endurance ExerciseStatus unknownNCT05781620Not applicable
- Vitamin D in Healthy Adults After Strenuous Endurance ExerciseCompletedNCT05779410Not applicable
- An Investigator-initiated Trial to Assess the Effectiveness of Three Different Gummies (Curcumin Gummies, Vitamin C Gummies, and Vitamin B Complex Gummies) in Healthy ChildrenCompletedNCT05775237Not applicable
- Quintuple Method for Treatment of Multiple Refractory Colorectal Liver MetastasesStatus unknownNCT05774964Phase 2
- Vitamin C on Acute and Chronic Post Mastectomy PainCompletedNCT05770596Not applicable
- Effect Of Calcitriol On Neutrophil To Lymphocytes Ratio And High Sensitivity C-Reactive Protein Covid-19 PatientsCompletedNCT05765617Phase 2
- Ascorbic Acid to Prevent Postreperfusion Syndrome in Liver TransplantationStatus unknownNCT05754242Phase 2
- Effect of Serum Vitamin D Level on the Efficacy of Peg-interferon Treatment in CHBCompletedNCT05753280Phase 4
- Broccoli Seed Extract and Skin HealthCompletedNCT05745636Not applicable
- Prevention of Cefoperazone-induced CoagulopathyCompletedNCT05742295Phase 4
- UVB-Induced MVP Release in Human SkinCompletedNCT05734235Phase 1
- Oral Nano Vitamin D Supplementation Efficacy in Inflammatory Bowel DiseaseStatus unknownNCT05733117Phase 4
- Bowel Preparation Regimen for Colon Capsule Endoscopy ProcedureCompletedNCT05726097Phase 3
- Different Regimens of Vitamin D in Treatment of Children With Chronic Liver DiseaseCompletedNCT05717569Not applicable
- Serum Prolidase Activity and the Role of Leptin in OsteomalaciaStatus unknownNCT05716750Not applicable
- Medicine-induced Cardiac Hemodialysis on COVID-19CompletedNCT05711810Phase 4
- Efficacy and Safety of High Dose Vitamin D Supplementation for Overactive Bladder Dry in ChildrenCompletedNCT05709990Not applicable
- Efficacy of Megadose Vitamin C in Severe and Critical Ill COVID-19 Patients.Status unknownNCT05694975Phase 2/3
- Randomized Trial of Enteral Vitamin D Supplementation in Infants < 28 Weeks Gestational Age or <1000 Grams Birth WeightActive, not recruitingNCT05694689Not applicable
- Vitamins D and K Effects on Vascular Function in Obese Adults.Status unknownNCT05689632Not applicable
- Antioxidant and Immune Effects of Vitamin K2CompletedNCT05675163Not applicable
- Oral Vitamin D2 for Prevention of COVID-19Status unknownNCT05673980Not applicable
- Comparison of Triamcinolone With Pentoxifylline and Vitamin- E Efficacy in the Treatment of Stage 2 and 3 Oral Submucous FibrosisCompletedNCT05660694Phase 4