Vitamin D Deficiency: all 784 studies

Page 2 of 8. Open to participants first (61), then studies with results posted, then the rest; newest registration first within each.

• Treatment Study of Vitamin D Deficiency in AdolescentsCompletedNCT01784029Phase 4Results posted
• Effect of Vitamin D Supplementation on Endothelial Function in Obese AdolescentsCompletedNCT01746264Phase 1Results posted
• Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D InsufficiencyCompletedNCT01704079Phase 3Results posted
• The Effect of Hypovitaminosis D and Vitamin D Supplementation on Fracture Nonunion RatesCompletedNCT01691833Not applicableResults posted
• High Dose Preoperative Cholecalciferol Supplementation and Perioperative Vitamin D StatusCompletedNCT01689779Phase 3Results posted
• The Effect of Oral Vitamin D Versus Narrow-Band UV-B Exposure on the Lipid ProfileCompletedNCT01688102Not applicableResults posted
• Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D InsufficiencyCompletedNCT01651000Phase 3Results posted
• Human Pharmacology Trial of Calcium-vitamin D3 Tablet in Healthy ParticipantsCompletedNCT01639222Phase 1Results posted
• Efficacy of Vitamin D2 to Treat Chronic Kidney Disease Mineral and Bone DisorderCompletedNCT01633853Phase 4Results posted
• Effect of Omega-3 Fatty Acid on Vitamin D ActivationCompletedNCT01596842Phase 4Results posted
• Vitamin D Repletion in Coronary Artery DiseaseCompletedNCT01570309Not applicableResults posted
• Is Treatment of Vitamin D Deficiency Associated With Resolution of Statin-Induced Muscular SymptomsCompletedNCT01568255Phase 4Results posted
• Improving the Understanding of the Response to Vitamin D SupplementationCompletedNCT01465178Phase 3Results posted
• Vitamin D for Sickle-cell Respiratory ComplicationsCompletedNCT01443728Phase 2Results posted
• Treatment of Vitamin D Deficiency in Patients With Rheumatoid ArthritisCompletedNCT01426347Not applicableResults posted
• Vitamin Deficiency in Immigrants, a Treatment StudyCompletedNCT01419119Phase 4Results posted
• Improving Vitamin D Status in Home-bound EldersCompletedNCT01410084Not applicableResults posted
• Efficacy of Vitamin D Supplementation in Bariatric Surgery PatientsCompletedNCT01385098Not applicableResults posted
• Vitamin D Deficiency and Atopic DermatitisTerminatedNCT01337635Not applicableResults posted
• Nutrition and Body Composition in Acute Lymphoblastic LeukemiaCompletedNCT01317940Phase 2Results posted
• Vitamin D Repletion in Primary HyperparathyroidismCompletedNCT01306656Phase 4Results posted
• Vitamin D Repletion in Stone Formers With HypercalciuriaCompletedNCT01295879Phase 4Results posted
• Effect of Vitamin D Replacement on Insulin SensitivityCompletedNCT01268111Phase 1Results posted
• Vitamin D in HIV-Infected Patients on HAARTCompletedNCT01250899Not applicableResults posted
• Vitamin D Supplementation in Kidney DiseaseCompletedNCT01229878Not applicableResults posted
• Impact of Vitamin D Repletion in Hemodialysis PatientsCompletedNCT01175798Not applicableResults posted
• Vitamin D in Vulnerable Adults (VIVA-VA)CompletedNCT01170273Phase 3Results posted
• Study of Vitamin D and Effect on Heart Disease and Insulin ResistanceCompletedNCT01093417Phase 2Results posted
• Vitamin D Supplementation Reduces Renin-Angiotensin System Activity in ObesityCompletedNCT01068418Not applicableResults posted
• Prevalence of Vitamin D Deficiency in Type 1 Diabetes Mellitus and Effect of Supplementation on Insulin RequirementsCompletedNCT01029392Phase 3Results posted
• Effect of Vitamin D Supplement on Inflammation Markers in High-Risk Cardiovascular Patients With Chronic Kidney DiseaseTerminatedNCT01012414Phase 3Results posted
• Vitamin D Supplementation in Psychiatric IllnessesCompletedNCT01004354Not applicableResults posted
• Vitamin D Supplementation Requirement in Obese SubjectsTerminatedNCT00996866Not applicableResults posted
• Vitamin D Deficiency in Patients With HypertensionTerminatedNCT00974922Phase 4Results posted
• Effect of Vitamin D3 on Vascular FunctionCompletedNCT00948298Not applicableResults posted
• Treatment of Vitamin D InsufficiencyCompletedNCT00933244Phase 4Results posted
• Blue Sky Study: Impact of Milk and Vitamin D for Child Growth and HealthCompletedNCT00886379Phase 2Results posted
• Vitamin D and Coronary Calcification StudyCompletedNCT00752102Phase 4Results posted
• Vitamin D Replacement After Kidney TransplantCompletedNCT00748618Not applicableResults posted
• Health Benefits of Vitamin D and Calcium in Women With PCOS (Polycystic Ovarian Syndrome)CompletedNCT00743574Not applicableResults posted
• hCAP18 Levels and Vitamin D Deficiency in Healthy SubjectsCompletedNCT00742235Not applicableResults posted
• Vitamin D, Insulin Resistance, and Cardiovascular DiseaseCompletedNCT00736632Not applicableResults posted
• Safety of Vitamin D Supplementation in Older PersonsCompletedNCT00681590Phase 3Results posted
• Effect of Vitamin D Treatment in Primary HyperparathyroidismCompletedNCT00674154Phase 2/3Results posted
• Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their InfantsCompletedNCT00610688Phase 3Results posted
• Does Treatment of Hypovitaminosis D Increase Calcium Absorption?CompletedNCT00581828Phase 4Results posted
• Vitamin D Deficiency, Insulin Resistance and FGF-23CompletedNCT00491322Not applicableResults posted
• Cholecalciferol (Vitamin D3) Therapy in Chronic Kidney Disease (CKD) SubjectsCompletedNCT00427037Not applicableResults posted
• Treatment of Hypovitaminosis D in Rheumatoid ArthritisCompletedNCT00423358Not applicableResults posted
• Vitamin D Deficiency, Muscle Pain, Joint Pain, and Joint Stiffness in Postmenopausal Women Receiving Letrozole For Stage I-III Breast CancerCompletedNCT00416715Phase 2Results posted
• Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South CarolinaCompletedNCT00412087Phase 3Results posted
• Establishing the Vitamin D Requirements During LactationCompletedNCT00412074Phase 3Results posted
• Vascular Risk After Kidney TransplantationCompletedNCT00374595Results posted
• Evaluation of Vitamin D Requirements During PregnancyCompletedNCT00292591Phase 3Results posted
• BPPV Recurrence After CRM With & Without SupplementationCompletedNCT07861464Early Phase 1
• Vitamin D Status in Obstructive Sleep Apnea With and Without ComorbiditiesCompletedNCT07788391
• Local and Systemic Inflammatory Bone Alterations Related to Dental Implant Survival.Active, not recruitingNCT07766707
• Collegiate Athlete StudyCompletedNCT07631312Not applicable
• Effect of Vitamin D on Postoperative Pain in Symptomatic Irreversible PulpitisActive, not recruitingNCT07579637Not applicable
• Identification and Characterization of At-risk MASLD in Turkish AdultsCompletedNCT07548970
• A Household-Based Dietary Intervention Study of Vitamin D Fortified Bread in Irish FamiliesCompletedNCT07481240Not applicable
• Vitamin D Status in Young Medical ResidentsCompletedNCT07479303
• Effect of Vitamin D Supplementation on Metabolic Parameters in Patients With Type 2 Diabetes and Vitamin D DeficiencyCompletedNCT07468721Not applicable
• Vitamin D Status in Hemodialysis Transplant Candidates and Living DonorsCompletedNCT07409623
• Comparison of Different Doses of Vitamin D Supplementation on Glycated Haemoglobin and Blood Glucose Parameters With Type II Diabetes Mellitus Having Vitamin d DeficiencyActive, not recruitingNCT07321223Not applicable
• High-Dose Vitamin D Supplementation and Exercise Effects on Vitamin D Metabolites in Professional Football PlayersCompletedNCT07310329Not applicable
• Vitamin D Versus Desmopressin Versus Combination Therapy in Children With Primary Monosymptomatic Nocturnal Enuresis and Vitamin D DeficiencyCompletedNCT07292753Not applicable
• Effect of Vitamin D on Body Composition and Functionality of Older AdultsCompletedNCT07275177Not applicable
• Effect of Vitamin D on the Clinical and Radiographic of Unsplinted Mandibular Implant OverdenturesActive, not recruitingNCT07200011
• High-Dose Vitamin D3 for Diabetic Foot Ulcer Healing: Randomized Controlled TrialCompletedNCT07139964Not applicable
• Comorbidity-Based Propranolol Use in Pediatric MigraineCompletedNCT07103031
• Effect of Vitamin D Deficiency on the Frequency and Severity of Spinal Anesthesia-Induced Hypotension in Pregnant Women Undergoing Cesarean SectionCompletedNCT07057362
• Pre- and Post-Treatment Investigation of B12 and Folic Acid (Folate) Levels in Patients Receiving Antiepileptic (Anticonvulsant) Treatment for Fibromyalgia: Retrospective StudyCompletedNCT07013305
• Preoperative Correction of Vitamin D Deficiency in Total Joint Arthroplasty (TJA)Active, not recruitingNCT07006714Phase 4
• Association of Vitamin D Status With Metabolic Markers in Adolescents With Polycystic Ovary SyndromeCompletedNCT06970821
• Serum Vitamin D and Gingival Crevicular Fluid Levels of Osteocalcin and N-Terminal TelopeptideCompletedNCT06871631
• Effect of Vitamin D Deficiency on the Structure of Titanium Platelet-Rich FibrinCompletedNCT06870786Not applicable
• Abnormally High Parathyroid Hormone Levels Worsens Outcomes in Vitamin D Depleted Critical Care PatientsActive, not recruitingNCT06711874
• OASIS Study: Vitamin D Deficiency Prevention Among Older Adults in IrelandCompletedNCT06705582Not applicable
• Clinical Comparative Evaluation of the Use of Photodynamic Therapy in Conjunction With the Use of Vitamin D in Management Stage II Grade B Periodontitis PatientsCompletedNCT06700122Not applicable
• Serum Alkaline Phosphatase Levels In Healthy Turkish ChildrenCompletedNCT06689709Not applicable
• Vitamin D Status Fluctuations Over One Academic Year in StudentsActive, not recruitingNCT06677411
• Is Vitamin D Deficiency Linked to Functional Constipation In ChildrenActive, not recruitingNCT06657313
• Clinical Assessment of Adjunctive Omega-3 Versus Vitamin D Daily Supplements on Active Periodontal Therapy With Stage II Grade B Periodontitis PatientsCompletedNCT06654063Not applicable
• The Impact of Vitamin D Supplementation in Hypertensive Vitamin D Deficient Patients.CompletedNCT06645041Not applicable
• Oral or Intra Muscular Vitamin D2 Vs Oral or Intra Muscular Vitamin D3 in Treatment of Vitamin D DeficiencyActive, not recruitingNCT06618365Not applicable
• Relationship Between Maternal Awareness About Vitamin D for Under- Five Years Children and Their Health Status OutcomesActive, not recruitingNCT06562426
• Influence of Preoperative Vitamin D Level on Postoperative Pain in Breast Cancer Surgery PatientsCompletedNCT06551688
• Vitamin D Deficiency as Independent Predictor for Plaque VulnerabilityCompletedNCT06473337
• Vitamin-D Insufficiency and ImplantsCompletedNCT06452251
• Risk in Devel Long-COVID in Contracting SARS-CoV-2 Infection After COVID-19 Vaccination in Relation to Vitamin D3 SupplCompletedNCT06452082
• Vit D and Post-extractive Bone TurnoverCompletedNCT06412705Not applicable
• Vitamin D in Armenia: Vitamin D Repletion Strategies With Dibase, and Vitamin D and Vitamin D Binding Protein and COVIDCompletedNCT06406543Not applicable
• Emulated Study of Vitamin D Correction Vs Non-CorrectionActive, not recruitingNCT06366776
• Relationship Between Vitamin D and Vitamin B12 Levels and Neuropathic Pain in LipedemaActive, not recruitingNCT06338059
• FREQUENCY OF VITAMIN D DEFICIENCY IN PREMATURE NEWBORN BORN BEFORE 32 WEEKS AND/OR WITH A BIRTH WEIGHT UNDER 1500gActive, not recruitingNCT06315452
• Effects of Vitamin D on Health Promotion During Pregnancy and Its Impact on Prematurity-Related OutcomeActive, not recruitingNCT06292195
• Analysis of Vitamin D and VDR Expression in Endometriosis: A Case-Control StudyCompletedNCT06289257
• Comparıson Of Electromyography Results Before And After Vıtamın D Treatment In Patıents Wıth Carpal Tunnel SyndromeCompletedNCT06282640Phase 4
• High Dose Vitamin D Supplementation in Children With Sickle Cell DiseaseCompletedNCT06274203Not applicable

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