| Effects of Supplementation of Vitamin D in Patients With Crohn's Disease (NCT02704624) | Federal University of Juiz de Fora | 2016-12-01 |
| The Effect of Combinatorial Nutritional Supplementation on Immune Function in Healthy Older Adults (NCT02876315) | Oregon State University | 2016-12-01 |
| Efficacy of Vitamin D Supplementation in Obese Children (NCT02956408) | Columbia University | 2016-11-30 |
| Effect of Vitamin D3 and Omega-3FA on Estradiol (NCT03333564) | Applied Science Private University | 2016-11-01 |
| Vitamin D in Diabetic Children (NCT03258086) | Assiut University | 2016-11-01 |
| Safety, Efficacy, and Feasibility of High-dose Cholecalciferol in Pediatric Patients With Cystic Fibrosis (NCT02613884) | Johns Hopkins All Children's Hospital | 2016-11-01 |
| Hypovitaminosis D in Neurocritical Patients (NCT02881957) | University of Utah | 2016-10-10 |
| Vitamin D Levels in Adolescent Idiopathic Scoliosis (NCT03820895) | Security Forces Hospital | 2016-10-01 |
| Vitamin D Supplementation in Conscripts (NCT04359524) | Leho Rips | 2016-10-01 |
| Vitamin D Supplementation and Sunlight Exposure in Brazilian Women Living in Opposite Latitudes (The D-SOL Study) (NCT03318029) | University of Surrey | 2016-10-01 |
| Effect of Escalating Oral Vitamin D Replacement on HOMA-IR in Vitamin D Deficient Type 2 Diabetics (NCT04183257) | King Edward Medical University | 2016-09-30 |
| Effect of Vitamin D3 Supplementation in Children From 12 to 30 Months of Age. (NCT03544671) | Instituto Nacional de Salud Publica, Mexico | 2016-09-15 |
| Vitamin D Levels in Liver Transplantation Recipients Prospective Observational Study (NCT03234218) | The Mediterranean Institute for Transplantation and Advanced Specialized Therapies | 2016-09-01 |
| High Dose Vitamin D Replacement in Patients Undergoing Hematopoietic Stem Cell Transplantation (NCT02876822) | Children's Hospital Medical Center, Cincinnati | 2016-08-26 |
| Effects of Vitamin D Fortification on Vitamin D Metabolite Profiles and Status in Vitamin D Insufficient Individuals (NCT02422784) | University of Manitoba | 2016-07-01 |
| Vitamin D Raising and Maintaining Blood Serum 25(OH)D3 Levels (NCT03099759) | The Cleveland Clinic | 2016-06-27 |
| Empirical Comperative Study Of Variation Blood Level Antibody Vitamin D at Different Groups Of Patients Compared Healthy Peoples (NCT02795234) | Meir Medical Center | 2016-06-01 |
| Maternal Vitamin D Levels in Pregnancy and Dental Caries in Children (NCT03273725) | Tannhelsetjenestens Kompetansesenter Midt-Norge | 2016-06-01 |
| Vitamin D Deficiency and Dysautonomia (NCT03032328) | Wake Forest University Health Sciences | 2016-06-01 |
| Does Vitamin D Alter Bone's Response to Vibration? (NCT02743559) | Sheffield Children's NHS Foundation Trust | 2016-05-19 |
| Vitamin D3 Treatment and Homocysteine Concentrations Among Overweight Reproductive Women (NCT03310307) | Al-Balqa Applied University | 2016-04-01 |
| Can Correction of Low Vitamin D Status in Infancy Program for a Leaner Body Composition? (NCT02563015) | McGill University | 2016-03-07 |
| Is There Association Between Vitamin D Levels And Insulin Resistance In Polycystic Ovary Syndrome? (NCT02803476) | Ain Shams Maternity Hospital | 2016-03-01 |
| Vitamin D Deficiency of Couples and Infertility (NCT03305510) | Tongji Hospital | 2016-03-01 |
| Vitamin D Levels Following Topical Application of Vitamin D Ointment (NCT02676674) | University of Minnesota | 2016-03-01 |
| Magnesium and Vitamin D Supplementation and Cardiometabolic Outcomes (NCT03134417) | Drexel University | 2016-02-01 |
| Therapeutic Benefit of Preoperative Supplemental Vitamin D in Patients Undergoing Major Surgical Procedures. (NCT02138591) | University of Missouri, Kansas City | 2016-02-01 |
| Vitamin D Supplementation in Intensive Care Unit Patients (NCT04915963) | Association Tunisienne d'Etude & de Recherche sur l'Athérosclérose | 2016-01-20 |
| Electronic Medical Records to Increase Adherence to the Choosing Wisely Recommendations (NCT05385445) | University of Manitoba | 2016-01-01 |
| Roles of Vitamin D and HDL in Obese Children (NCT02135913) | Xiang-An Li | 2016-01-01 |
| The 'Hidden' Biological Impact of Vitamin D Deficiency: a Biomarker Study; Part 2 (NCT02451787) | The Hong Kong Polytechnic University | 2015-12-01 |
| Vitamin D and Microbiota in Cystic Fibrosis (NCT02589444) | Emory University | 2015-12-01 |
| Vitamin D in Fatty Liver Disease (NCT04038853) | University Hospital Rijeka | 2015-12-01 |
| Vitamin D and Immunity: Photosynthesis Versus Supplementation (NCT03609970) | Guy's and St Thomas' NHS Foundation Trust | 2015-11-19 |
| Food-based Solutions for Optimal Vitamin D Nutrition and Health (NCT02631629) | Technical University of Denmark | 2015-11-01 |
| Vitamin D Supplementation in Wheelchair Indoor Athletes (NCT02621320) | Swiss Paraplegic Research, Nottwil | 2015-11-01 |
| Evaluation of a Transdermal Vitamin D3 Delivery System, D3forME (NCT02174718) | University of Wisconsin, Madison | 2015-11-01 |
| Differences in Ovarian Reserve Markers and Vitamin D Between Infertile Indian, Arabian and Caucasian Population (NCT02209168) | IVI Madrid | 2015-11-01 |
| Impact of Maternal Body Weight on Vitamin D Status During Pregnancy (NCT02713009) | University of Ulster | 2015-11-01 |
| Vitamin D in Systemic Sclerosis Patients With Periodontitis (NCT04066842) | University of Messina | 2015-11-01 |
| Cholecalciferol in Newly Diagnosed Non-Hodgkin Lymphoma or Chronic Lymphocytic Leukemia With Vitamin D Deficiency (NCT02553447) | University of Nebraska | 2015-10-19 |
| Cholecalciferol Supplementation Effect on Parathyroid Hormone in Hemodialysis Patients (NCT03648528) | Cooperativa Asistencia Sindicato Médico Uruguay | 2015-10-15 |
| Effects of Cholecalciferol on Osteoprotegerin Levels in Patients on Peritoneal Dialysis (NCT02598635) | Instituto Nacional de Ciencias Medicas y Nutricion Salvador Zubiran | 2015-10-01 |
| Vitamin D in Ectopic Pregnancies (NCT03894735) | Kanuni Sultan Suleyman Training and Research Hospital | 2015-10-01 |
| Effect of Vitamin D3 Supplementation on Muscle Mass in ICU Patient (NCT02594579) | Mahidol University | 2015-10-01 |
| Prevalence and Consequences of Vitamin D Deficiency in Pregnant Women in Switzerland (NCT02904720) | Insel Gruppe AG, University Hospital Bern | 2015-10-01 |
| Change in Free 25(OH)D After High Dose in Vitamin D Deficient Postmenopausal Women (NCT02553044) | Sheffield Teaching Hospitals NHS Foundation Trust | 2015-10-01 |
| An Evaluation of the Effect of Vitamin D Supplementation on the Cognitive Function of Older Subjects With Low Levels of This Vitamin (NCT02381600) | Meir Medical Center | 2015-10-01 |
| Vitamin D and HbA1c Levels in Diabetic Patients With CKD (NCT02906319) | Ng Yong Muh | 2015-09-01 |
| Corneal Nerve Structure in Sjogren's (NCT03203382) | University of Pennsylvania | 2015-09-01 |
| A Study to Investigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient Women (NCT02714361) | University of Chester | 2015-09-01 |
| Effects of Vitamin D Supplementation on Immune Function in Infants (NCT04461665) | Shih Chien University | 2015-08-18 |
| Magnesium as a Mediator of Bone and Vitamin D Metabolism in Patients on Antiepileptic Drug Therapy (NCT03471481) | Drexel University | 2015-08-10 |
| Acute Effect of Systemic Stress on Measured Blood Concentrations of 25 (OH) Vitamin D (NCT02460211) | Intermountain Health Care, Inc. | 2015-07-01 |
| Study To Understand Fall Reduction and Vitamin D in You (NCT02166333) | Johns Hopkins University | 2015-06-30 |
| Comparison of Sunlight Exposure and Vitamin D Supplementation on Serum 25-hydroxyvitamin D Levels (NCT03310242) | Seoul National University Hospital | 2015-06-01 |
| The Effect of Vitamin D Supplementation on Cardiovascular Risk Factors (NCT02750293) | University of Tromso | 2015-06-01 |
| Nutritional Status and Hidradenitis Suppurativa (Acne Inversa) (NCT03683238) | Federico II University | 2015-05-01 |
| The Effect of Vitamin D Administration to Premature Infants on Vitamin D Status and Respiratory Morbidity (NCT02404623) | Soroka University Medical Center | 2015-04-01 |
| Preoperative Vitamin D Levels and Respiratory Complications of General Anesthesia (NCT03342651) | Ordu University | 2015-04-01 |
| Vitamin D Supplements on Markers for Cardiovascular Disease and Diabetes: an Individual Participant Data Meta-analysis (NCT02551835) | Amsterdam UMC, location VUmc | 2015-04-01 |
| Trial of High Dose Vitamin D in Patient's With Crohn's Disease (NCT02208310) | University of Michigan | 2015-04-01 |
| Vitamin D and Mortality: an Individual Participant Data Meta-analysis of Standardized 25-hydroxyvitamin D (NCT02438488) | Medical University of Graz | 2015-04-01 |
| Impact of Vitamin D on 25-hydroxyvitamin D Levels and Physical Function (NCT02293187) | Tufts University | 2015-03-23 |
| Trial of Vitamin D Supplements to Raise Calcidiol Levels of Pregnant Women in Mongolia (NCT02395081) | Brigham and Women's Hospital | 2015-02-01 |
| Vitamin D in Periodontal and Cardiovascular Disease Progression (NCT03873935) | University of Messina | 2015-01-02 |
| Prospective, Assessment of Vitamin D and Calcium Supplementation, Improvement of Nutritional Status and Preoperative Rehabilitation in Patients Before Knee Arthroplasty. (NCT04291833) | Jagiellonian University | 2015-01-01 |
| A Retrospective Analysis: the Influence of Caltrate Supplement on the Effect of Mesalazine in Ulcerative Colitis (NCT04276649) | Second Affiliated Hospital of Wenzhou Medical University | 2015-01-01 |
| Effect of Vitamin D-biofortified Eggs on Wintertime Serum 25-hydroxyvitamin D in Adults: Randomized Controlled Trial (NCT02678364) | University College Cork | 2015-01-01 |
| Vitamin D, Iodine, and Lead Levels in Haitian Infants and Children. (NCT02301520) | Boston Children's Hospital | 2015-01-01 |
| Hip Arthroplasty and Vitamin D Status (NCT02295228) | University of Wisconsin, Madison | 2015-01-01 |
| A Prospective, Multi-center Study to Evaluate the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in Adults With Vitamin D Deficiency (NCT02443246) | Kwang Dong Pharmaceutical co., ltd. | 2014-11-01 |
| Nutritional Requirements for Vitamin D in Pregnant Women (NCT02506439) | University College Cork | 2014-11-01 |
| Effect of Vitamin D Supplementation in Patients With Heart Failure and Vitamin D Deficiency (NCT02087683) | Instituto Tecnologico y de Estudios Superiores de Monterey | 2014-11-01 |
| The Influence of Vitamin D on Atypical Antipsychotic-induced Weight Gain (NCT02281162) | Creighton University | 2014-11-01 |
| Isolation of Vitamin D Binding Protein Isoforms From Human Volunteers (NCT02258035) | Universitaire Ziekenhuizen KU Leuven | 2014-11-01 |
| D Vitamin Effects on Neuromuscular Blocker Reverse Time (NCT03734250) | Duzce University | 2014-11-01 |
| A Prospective, Single-centre, Open-label Study to Confirm the Efficacy and Safety of Vitamin D3 B.O.N. Intramuscular Injection in Adults With Vitamin D Deficiency (NCT03233295) | Kwang Dong Pharmaceutical co., ltd. | 2014-10-23 |
| Effect of Vitamin D Supplementation on Metabolic Parameters of Patients With Psoriasis (NCT02271971) | Pontificia Universidad Catolica de Chile | 2014-10-01 |
| Effect of an Inhibitor of Cholesterol Absorption on Vitamin D Levels (NCT02234544) | Federal University of Rio Grande do Sul | 2014-10-01 |
| Maternal Vit D Supplements & Infant and Maternal Biomarkers & Outcomes in Southern Ethiopia (NCT02210884) | Oklahoma State University | 2014-10-01 |
| The GLOBAL Vitamin D Study. A Genomic, Transcriptomic, Proteomic and Metabolomic Approach (NCT02783924) | University of Tromso | 2014-10-01 |
| Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'. (NCT02118129) | University of Guelph | 2014-09-01 |
| Cholecalciferol Supplementation for Anemia and Mineral and Bone Disorder in Hemodialysis Patients (NCT02214563) | Takayuki Hamano | 2014-08-01 |
| Efficacy of the Dose Regimen of Oral Vitamin D 50,000 IU in the Treatment of Vitamin D Deficiency (NCT02192229) | Hayat Pharmaceutical Co. PLC | 2014-08-01 |
| The Role of Vitamin D in Female Reproductive Tract Immunity (NCT02186535) | CONRAD | 2014-08-01 |
| Determination of Vitamin D Dose to Maintain Sufficiency Amongst Indian and Malay Women in the Tropics (NCT02389179) | Sharifah Faradila bt Wan Muhamad Hatta | 2014-08-01 |
| The Changes of Body Composition, Glucolipid Metabolism and Bone Metabolism in Obese Children After Weight Loss (NCT03490448) | Xinhua Hospital, Shanghai Jiao Tong University School of Medicine | 2014-07-06 |
| Effect of Oral Daily Supplementation With 400 IU Vs 200 IU of Vitamin D in Term Healthy Neonates (NCT02186028) | Lady Hardinge Medical College | 2014-07-01 |
| Intervention Study of Vitamin D Supplementation to Prevent Cardiovascular Disease (NCT03339427) | Chinese PLA General Hospital | 2014-06-01 |
| Comparison of Changes in Serum 25(OH)D Concentrations Following Vitamin D Supplementation With Chewable Tablets Versus Pills (NCT02158598) | CHU de Quebec-Universite Laval | 2014-06-01 |
| Effects of Vitamin D3 Versus 25OHD3 on Mineral Metabolism and Immune Function (NCT02091219) | University of California, Los Angeles | 2014-06-01 |
| The Effect of Vitamin D Supplements on Vitamin D Status, Cardiometabolic Health and Immune Defense in Danish Children (NCT02145195) | University of Copenhagen | 2014-06-01 |
| Study Vitamin D in Healthy Individuals (NCT02250625) | Fujirebio Diagnostics, Inc. | 2014-05-01 |
| Vitamin D Status and Immune Function (NCT02416895) | Bangor University | 2014-04-01 |
| Periodontal and Cardiometabolic Responses to Vitamin D Intervention in African Americans With Periodontal Disease (NCT02337257) | Augusta University | 2014-04-01 |
| Vitamin D Deficiency and Placental Calcification in Low-risk Obstetric Population - Are They Related? (NCT02190396) | Zekai Tahir Burak Women's Health Research and Education Hospital | 2014-03-01 |
| Hepatic Dysfunction, Vitamin D Status, and Glycemic Control in Diabetes (NCT02132442) | University of Massachusetts, Worcester | 2014-03-01 |
| Effect of Vitamin D Supplementation on Infliximab Response in Patients With Crohn's Disease (NCT04606017) | Second Affiliated Hospital of Wenzhou Medical University | 2014-01-01 |
| Effect of Vitamin D Treatment on Fatigue (NCT02022475) | University of Zurich | 2013-12-01 |