Vitamin D Deficiency
Information
- Disease name
- Vitamin D Deficiency
- Disease ID
- Description
Disease area statistics
[No Data.]
Chromosome band
[No Data.]
Annotation
Genes | Mutation | Description | Source | Links |
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NCT ID | Status | Phase | Summary | Start date | Completion date |
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NCT05050916 | Active, not recruiting | Phase 1/Phase 2 | The Investigation of Vitamin D and Menstrual Cycles Trial, the inVitD Trial: A Phase II Randomized Trial | March 17, 2023 | November 30, 2024 |
NCT06315452 | Active, not recruiting | FREQUENCY OF VITAMIN D DEFICIENCY IN PREMATURE NEWBORN BORN BEFORE 32 WEEKS AND/OR WITH A BIRTH WEIGHT UNDER 1500g | February 1, 2022 | June 1, 2024 | |
NCT06054919 | Active, not recruiting | Phase 2/Phase 3 | The Effect of Vitamin D3 Therapy on Vitamin D Status in Pregnant Women With Vitamin D Deficient and Insufficient | April 1, 2021 | November 30, 2023 |
NCT04170348 | Active, not recruiting | Phase 2 | Daily Vitamin D for Sickle-cell Respiratory Complications | September 15, 2020 | February 28, 2025 |
NCT06338059 | Active, not recruiting | Relationship Between Vitamin D and Vitamin B12 Levels and Neuropathic Pain in Lipedema | March 1, 2024 | June 1, 2024 | |
NCT00748618 | Active, not recruiting | N/A | Vitamin D Replacement After Kidney Transplant | October 2008 | June 2023 |
NCT03613116 | Active, not recruiting | Phase 2 | High-dose Vitamin D Supplements in Older Adults | March 18, 2019 | December 31, 2024 |
NCT03018132 | Active, not recruiting | N/A | Preeclampsia Research on Vitamin D, Inflammation, & Depression | April 1, 2017 | July 2025 |
NCT05997199 | Active, not recruiting | The Effect Vitamin D on the Recovery Rate of Bell Palsy | June 1, 2023 | September 15, 2023 | |
NCT06406543 | Active, not recruiting | N/A | Vitamin D in Armenia: Vitamin D Repletion Strategies With Dibase, and Vitamin D and Vitamin D Binding Protein and COVID | December 1, 2023 | December 31, 2024 |
NCT05559112 | Active, not recruiting | N/A | Effects of Vitamin D-Enriched Mushrooms on Vitamin D Status and Immune Function and Inflammatory Status in Adults | December 5, 2022 | April 2024 |
NCT05329428 | Active, not recruiting | N/A | PREDIN: Pregnancy and Vitamin D Intervention Study | April 14, 2022 | December 31, 2024 |
NCT06452082 | Active, not recruiting | Retrospective Observational Study on the Risk in Developing Long-COVID Syndrome and in Contracting SARS-CoV-2 Infection After COVID-19 Vaccination in Relation to Vitamin D3 Supplementation | March 20, 2024 | March 2027 | |
NCT02553447 | Active, not recruiting | N/A | Cholecalciferol in Newly Diagnosed Non-Hodgkin Lymphoma or Chronic Lymphocytic Leukemia With Vitamin D Deficiency | October 19, 2015 | March 24, 2025 |
NCT04482673 | Active, not recruiting | Phase 4 | Vitamin D Supplementation in the Prevention and Mitigation of COVID-19 Infection | July 31, 2020 | December 31, 2023 |
NCT00473239 | Completed | N/A | The Pharmacokinetics of a Single Large Dose of Vitamin D3 | October 2006 | March 2007 |
NCT00473317 | Completed | N/A | Sunlight Exposures Effect on Serum Vitamin D Levels | July 2007 | September 2007 |
NCT00491322 | Completed | N/A | Vitamin D Deficiency, Insulin Resistance and FGF-23 | May 2006 | February 2008 |
NCT00494104 | Completed | N/A | Prevention of Vitamin D Deficiency | September 2006 | September 2011 |
NCT00497900 | Completed | Phase 4 | The Effect of Calcium and Vitamin D in Patients With Heart Failure | August 2007 | December 2011 |
NCT00581828 | Completed | Phase 4 | Does Treatment of Hypovitaminosis D Increase Calcium Absorption? | January 2005 | December 2008 |
NCT00610688 | Completed | Phase 3 | Controlled Trial of Prenatal Vitamin D3 Supplementation to Prevent Vitamin D Deficiency in Mothers and Their Infants | January 2008 | April 2012 |
NCT00674154 | Completed | Phase 2/Phase 3 | Effect of Vitamin D Treatment in Primary Hyperparathyroidism | May 2008 | August 2013 |
NCT00681590 | Completed | Phase 3 | Safety of Vitamin D Supplementation in Older Persons | April 2008 | April 2009 |
NCT00682214 | Completed | Phase 1 | Cholecalciferol Supplementation, Muscle Strength | May 2008 | June 2009 |
NCT00685971 | Completed | N/A | Cholecalciferol for Vitamin D in Adult Cystic Fibrosis (CF) Patients | December 2008 | July 2013 |
NCT00690417 | Completed | N/A | Vitamin D Inadequacy in Rural Populations, Evaluation of Correction by Food Supplementation | August 2007 | August 2011 |
NCT00692120 | Completed | N/A | Clinical Approaches to Correcting Vitamin D Inadequacy and Maintaining Adequacy | February 2007 | November 2008 |
NCT00697294 | Completed | N/A | Impact of Vitamin D Status on Bones in Breastfed Infants | July 2008 | November 2011 |
NCT00723385 | Completed | N/A | Effects of Vitamin D on Lipids | July 2008 | July 2012 |
NCT00736632 | Completed | N/A | Vitamin D, Insulin Resistance, and Cardiovascular Disease | May 2006 | January 13, 2019 |
NCT00742235 | Completed | N/A | hCAP18 Levels and Vitamin D Deficiency in Healthy Subjects | July 2007 | January 2012 |
NCT00743574 | Completed | N/A | Health Benefits of Vitamin D and Calcium in Women With PCOS (Polycystic Ovarian Syndrome) | August 2008 | February 2013 |
NCT00749541 | Completed | Vitamin d Levels and Coronary Catheterization | November 2008 | August 2009 | |
NCT00749918 | Completed | N/A | Effect of Vitamin D Deficiency and Vitamin D Supplementation on Glucose Metabolism | January 2007 | June 2008 |
NCT00752102 | Completed | Phase 4 | Vitamin D and Coronary Calcification Study | September 2008 | October 2013 |
NCT00756899 | Completed | Vitamin D Deficiency and Low Bone Mineral Content in Children | July 2008 | May 2012 | |
NCT00780247 | Completed | Environmental Influences on Vitamin D Status | July 2008 | August 2008 | |
NCT00789503 | Completed | Phase 1/Phase 2 | Nursing-Home Residents Given Bread Fortified With Vitamin D3 | November 2004 | December 2005 |
NCT00850694 | Completed | Vitamin D Deficiency in Obese Adolescent Girls and Influence of Vitamin D on Insulin Secretion and Sensitivity | February 2007 | October 2010 | |
NCT00851396 | Completed | Assessment of Influence of Vitamin D on Insulin Secretion and Sensitivity in Obese Teenage Girls | April 2008 | October 2010 | |
NCT00882401 | Completed | Phase 4 | Vitamin D, Chronic Kidney Disease (CKD) and the Microcirculation | April 2009 | October 2010 |
NCT00882505 | Completed | N/A | Comparison of 25-hydroxy Vitamin D Level in Caucasian Women Receiving Vitamin D Supplementation and Not Receiving Supplementation: a Randomized Controlled Trial. | April 2009 | August 2010 |
NCT00886379 | Completed | Phase 2 | Blue Sky Study: Impact of Milk and Vitamin D for Child Growth and Health | January 2009 | March 2009 |
NCT00893451 | Completed | N/A | Study of Vitamin D3 Supplementation in Patients With Chronic Kidney Disease | September 2009 | June 2011 |
NCT00909454 | Completed | N/A | Vitamin D Supplement Study for Adolescents | February 2009 | June 2009 |
NCT00921622 | Completed | Phase 2 | Vitamin Deficiency and Blood Pressure in Hospitalized Jewish General Hospital (JGH) Patients | June 2009 | June 2011 |
NCT00933244 | Completed | Phase 4 | Treatment of Vitamin D Insufficiency | April 2010 | August 2014 |
NCT00948298 | Completed | N/A | Effect of Vitamin D3 on Vascular Function | July 2009 | August 2012 |
NCT00957879 | Completed | N/A | Different Vitamin D Preparations & FGF23 in Humans | May 2009 | March 2011 |
NCT00968877 | Completed | Phase 3 | Vitamin D and Chronic Renal Insufficiency | September 2009 | January 2011 |
NCT01004354 | Completed | N/A | Vitamin D Supplementation in Psychiatric Illnesses | June 2009 | June 2010 |
NCT01013584 | Completed | N/A | The Effect of Weight on Vitamin D Dose Response | November 2009 | July 2011 |
NCT01016184 | Completed | Phase 4 | Influence of Vitamin D Treatment on Multi-systemic Functions in Young Men With Vitamin D Deficiency Due to Work Conditions | September 2009 | March 2012 |
NCT01024777 | Completed | Phase 1 | Safety and Immunologic Effect of Low Dose Versus High Dose Vitamin D3 in Multiple Sclerosis | March 2010 | January 2013 |
NCT01025128 | Completed | Phase 4 | Vitamin D Status in Males in Jerusalem Area and Its Correlation to Parathyroid Hormone (PTH) Level and Bone Mineral Density | January 2010 | July 2014 |
NCT01037140 | Completed | Phase 4 | Effects of Vitamin D Supplementation in Obesity | January 2010 | July 2012 |
NCT01508845 | Completed | N/A | A Pilot Study of the Effect of Dietary Fat Type and Amount on Vitamin D3 Absorption | January 2012 | June 2013 |
NCT00092079 | Completed | Phase 3 | A Study of MK0217A and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227) | January 2004 | November 2004 |
NCT00204919 | Completed | N/A | Vitamin D Administration in the Nursing Home | June 2001 | November 2004 |
NCT00242476 | Completed | Phase 2 | A Study to Assess the Effectiveness of an Investigational Drug in Elderly Subjects With Low Vitamin D Levels (0822A-009) | September 2005 | July 2006 |
NCT00267540 | Completed | N/A | The Effect of Vitamin D on Bone Accretion and Turn-Over in Young Girls | January 2001 | December 2003 |
NCT00273611 | Completed | N/A | Vitamin D Levels and Vitamin D Education in Geriatric Patients | December 2005 | May 2006 |
NCT00288873 | Completed | Phase 4 | Characterization of Hyperparathyroidism and Vitamin D Deficiency in Obesity | February 2006 | July 2007 |
NCT00292591 | Completed | Phase 3 | Evaluation of Vitamin D Requirements During Pregnancy | January 2004 | January 2010 |
NCT00327847 | Completed | N/A | Optimizing Vitamin D Nutrition in Healthy Adults | December 2004 | December 2006 |
NCT00374595 | Completed | Vascular Risk After Kidney Transplantation | April 2006 | June 20, 2023 | |
NCT00381914 | Completed | Phase 2 | Vitamin D Dose-Response Study to Establish Dietary Requirements in Infants | March 2007 | December 2011 |
NCT00412074 | Completed | Phase 3 | Establishing the Vitamin D Requirements During Lactation | August 2006 | October 2012 |
NCT00412087 | Completed | Phase 3 | Vitamin D Status of Pregnant Women and Their Children in Eau Claire, South Carolina | January 2007 | July 2009 |
NCT00415402 | Completed | N/A | Effect of Vitamin D Supplementation on Health of Low Birth Weight Infants | March 2007 | July 2010 |
NCT00427037 | Completed | N/A | Cholecalciferol (Vitamin D3) Therapy in Chronic Kidney Disease (CKD) Subjects | December 2005 | March 2013 |
NCT02713009 | Completed | N/A | Impact of Maternal Body Weight on Vitamin D Status During Pregnancy | November 2015 | March 2018 |
NCT02714361 | Completed | N/A | A Study to Investigate the Effect of Vitamin D3 Supplementation on Iron Status in Iron Deficient Women | September 2015 | April 2016 |
NCT02735200 | Completed | Phase 2 | Topical Delivery of Vitamin D3 as Vitamin D Supplementation | April 2016 | December 30, 2016 |
NCT02750293 | Completed | Phase 3 | The Effect of Vitamin D Supplementation on Cardiovascular Risk Factors | June 2015 | September 2017 |
NCT02783924 | Completed | Phase 2 | The GLOBAL Vitamin D Study. A Genomic, Transcriptomic, Proteomic and Metabolomic Approach | October 2014 | May 2018 |
NCT02876315 | Completed | N/A | The Effect of Combinatorial Nutritional Supplementation on Immune Function in Healthy Older Adults | December 2016 | December 2019 |
NCT02881957 | Completed | Phase 2/Phase 3 | Hypovitaminosis D in Neurocritical Patients | October 10, 2016 | October 10, 2018 |
NCT02904720 | Completed | Prevalence and Consequences of Vitamin D Deficiency in Pregnant Women in Switzerland | October 2015 | February 2016 | |
NCT02906319 | Completed | Vitamin D and HbA1c Levels in Diabetic Patients With CKD | September 2015 | July 2016 | |
NCT02922803 | Completed | N/A | Vitamin D and Physical Performance Before and After Intervention and Birth Outcome in Pregnant Somali and Swedish Women | May 2010 | August 2016 |
NCT02930434 | Completed | N/A | Effects of Antarctic Environment on Vitamin D Status and Health Risk Biomarkers of Its Inhabitants | October 2016 | March 1, 2018 |
NCT02941185 | Completed | Phase 4 | Multi-dose Vitamin D Supplementation in Preterm Infants | January 2014 | December 2016 |
NCT02956408 | Completed | N/A | Efficacy of Vitamin D Supplementation in Obese Children | November 30, 2016 | October 30, 2019 |
NCT03021629 | Completed | Comparison of Vitamin D Status and Vitamin D Receptor Polymorphisms in Patients With High Myopia and Primary Open-angle Glaucoma | July 2013 | December 2016 | |
NCT03032328 | Completed | N/A | Vitamin D Deficiency and Dysautonomia | June 2016 | December 21, 2022 |
NCT03035084 | Completed | Phase 4 | Is Vitamin D2 Treatment-associated Decrease in 25(OH)D3 Level a Reciprocal Phenomena? | February 15, 2017 | November 20, 2017 |
NCT03038516 | Completed | Phase 2 | 'Palliative-D' Vitamin D to Palliative Cancer Patients | November 1, 2017 | June 9, 2020 |
NCT03070483 | Completed | Phase 2 | Blood Pressure in Blacks and Calcium (BBC) and Vitamin D Study | March 25, 2018 | November 1, 2018 |
NCT03073720 | Completed | Follicular Fluid, Bioavailable Vitamin D and Embryo Quality Markers | July 26, 2017 | December 31, 2019 | |
NCT03087149 | Completed | N/A | Monitored vs Standard Supplementation of Vitamin D in Preterm Infants | May 1, 2017 | March 31, 2020 |
NCT03096314 | Completed | Phase 3 | Vitamin D to Improve Outcomes by Leveraging Early Treatment | April 27, 2017 | December 11, 2018 |
NCT03099759 | Completed | N/A | Vitamin D Raising and Maintaining Blood Serum 25(OH)D3 Levels | June 27, 2016 | May 31, 2017 |
NCT03101150 | Completed | Phase 1/Phase 2 | Effect of Vitamin D3 Supplementation in Pregnancy on Risk of Pre-eclampsia | October 1, 2012 | December 31, 2015 |
NCT03134417 | Completed | N/A | Magnesium and Vitamin D Supplementation and Cardiometabolic Outcomes | February 1, 2016 | June 1, 2021 |
NCT03141593 | Completed | Phase 4 | Oral Vitamin D Substitution Weekly or Monthly and Adherence | October 9, 2017 | October 31, 2018 |
NCT03144128 | Completed | N/A | Vitamin D for Muscle Metabolic Function in Cancer Cachexia | May 23, 2018 | September 13, 2018 |
NCT03151174 | Completed | Early Phase 1 | Effects of Vitamin D Supplementation on Strength, Bone Density, and Injury Risk in Collegiate Athletes | April 29, 2017 | June 1, 2018 |
NCT03176849 | Completed | Phase 4 | A Randomized Phase IV Control Trial of Single High Dose Oral Vitamin D3 in Pediatric Patients Undergoing HSCT | November 1, 2017 | July 1, 2019 |
NCT03193944 | Completed | Phase 2 | Vitamin D Supplementation on Metabolic Syndrome Indicators Among Older Adults, Alborz Province, Iran | February 10, 2017 | July 10, 2017 |
NCT03203382 | Completed | Corneal Nerve Structure in Sjogren's | September 2015 | April 2017 | |
NCT03213886 | Completed | Phase 4 | The Effect of Supplementation of Vitamin D Deficiency in Older People With Acute Hip Fracture: | January 1, 2018 | July 30, 2020 |
NCT03221972 | Completed | Vitamin D of Chinese Children and Adolescents | January 1, 2010 | October 30, 2016 | |
NCT03233295 | Completed | Phase 4 | 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 | October 23, 2014 | August 27, 2016 |
NCT03234218 | Completed | Vitamin D Levels in Liver Transplantation Recipients Prospective Observational Study | September 2016 | September 2017 | |
NCT03253055 | Completed | The D-BIICEP Study | February 1, 2018 | July 1, 2018 | |
NCT03258086 | Completed | N/A | Vitamin D in Diabetic Children | November 1, 2016 | September 2017 |
NCT03264625 | Completed | Phase 2 | The Effects of Oral Vitamin D Supplementation on the Prevention of Peritoneal Dialysis-related Peritonitis | September 30, 2017 | July 30, 2021 |
NCT03273725 | Completed | Maternal Vitamin D Levels in Pregnancy and Dental Caries in Children | June 2016 | August 2017 | |
NCT03284840 | Completed | Adults Nutrition as a Protective or Health-risk Factor | June 1, 2017 | December 31, 2018 | |
NCT03304795 | Completed | Vitamin D Deficiency Still Growing | January 1, 2008 | December 31, 2014 | |
NCT03305510 | Completed | Vitamin D Deficiency of Couples and Infertility | March 1, 2016 | June 1, 2017 | |
NCT03310242 | Completed | N/A | Comparison of Sunlight Exposure and Vitamin D Supplementation on Serum 25-hydroxyvitamin D Levels | June 1, 2015 | November 30, 2015 |
NCT03310307 | Completed | Phase 2 | Vitamin D3 Treatment and Homocysteine Concentrations Among Overweight Reproductive Women | April 1, 2016 | October 30, 2016 |
NCT03318029 | Completed | N/A | Vitamin D Supplementation and Sunlight Exposure in Brazilian Women Living in Opposite Latitudes (The D-SOL Study) | October 1, 2016 | September 25, 2017 |
NCT03330301 | Completed | D-tecting Disease - From Exposure to Vitamin D During Critical Periods of Life | April 1, 2012 | September 30, 2016 | |
NCT03333564 | Completed | N/A | Effect of Vitamin D3 and Omega-3FA on Estradiol | November 2016 | February 2017 |
NCT03334136 | Completed | N/A | The Effect of Vitamin D Supplementation on Psoriasis Severity | November 24, 2017 | May 13, 2019 |
NCT03339427 | Completed | N/A | Intervention Study of Vitamin D Supplementation to Prevent Cardiovascular Disease | June 2014 | June 2015 |
NCT03342651 | Completed | N/A | Preoperative Vitamin D Levels and Respiratory Complications of General Anesthesia | April 1, 2015 | December 31, 2016 |
NCT03344718 | Completed | Metabolic Syndrome and Vitamin D Level in Old People | July 30, 2012 | August 17, 2012 | |
NCT03349879 | Completed | Familial Clustering of Vitamin D Deficiency Via Shared Environment: The Korean National Health And Nutrition Examination Survey 2008-2012 | January 1, 2008 | December 31, 2012 | |
NCT03376490 | Completed | Study of the Association of Muscle Strength, Balance and Other Factors With Vitamin Levels Among Elderly Diabetics | January 1, 2012 | August 31, 2014 | |
NCT03385356 | Completed | Phase 4 | Impact of Vitamin D Supplementation in Patients With Multiple Sclerosis | December 19, 2017 | April 30, 2018 |
NCT03395171 | Completed | N/A | Vitamin D3 Supplementation and Stress Fracture Occurrence in High-Risk Collegiate Athletes | November 30, 2015 | July 1, 2016 |
NCT03401541 | Completed | Early Phase 1 | 25-Hydroxyvitamin D Pharmacokinetic Study | October 1, 2018 | November 1, 2019 |
NCT03402698 | Completed | N/A | Vitamin D Supplementation in Children | January 9, 2018 | May 26, 2018 |
NCT03403647 | Completed | N/A | Effect of Vitamin D on Everolimus Trough Concentrations Among Heart Transplanted Patients | July 15, 2018 | April 10, 2019 |
NCT03420378 | Completed | N/A | Central Sensitization in Vitamin D Deficiency | January 28, 2018 | December 19, 2018 |
NCT03437421 | Completed | N/A | Myocardial Function and Vitamin D Supplementation in Diabetes. | February 4, 2018 | November 19, 2023 |
NCT03463642 | Completed | N/A | The Efficacy of Different Vitamin D Supplementation Delivery Methods | February 2, 2017 | April 4, 2017 |
NCT03490448 | Completed | N/A | The Changes of Body Composition, Glucolipid Metabolism and Bone Metabolism in Obese Children After Weight Loss | July 6, 2014 | August 16, 2014 |
NCT03536845 | Completed | Phase 3 | Vitamin D Supplementation to Prevent Vitamin D Deficiency for Children With Epilepsy | January 1, 2018 | August 1, 2021 |
NCT03544671 | Completed | N/A | Effect of Vitamin D3 Supplementation in Children From 12 to 30 Months of Age. | September 15, 2016 | December 21, 2017 |
NCT03584256 | Completed | Vitamin D Status Among Competitive Female Gymnast and Swimmers After Winter Time | April 5, 2018 | April 6, 2018 | |
NCT03602430 | Completed | Phase 2/Phase 3 | Cholecalciferol on Hemodialysis Patients | July 1, 2018 | September 28, 2018 |
NCT03608488 | Completed | N/A | The Effect of Vitamin D and Exercise on Balance in Postmenopausal Women | August 6, 2018 | July 12, 2019 |
NCT03609970 | Completed | N/A | Vitamin D and Immunity: Photosynthesis Versus Supplementation | November 19, 2015 | April 14, 2017 |
NCT03639584 | Completed | Prevalence of Deficiency of Vitamin D in Critically Ill Patients | August 23, 2018 | November 30, 2020 | |
NCT03644212 | Completed | Phase 4 | Vitamin D Increases Serum Levels of the Soluble Receptor for Advanced Glycation End Products in Women With PCOS | July 2012 | October 2013 |
NCT03648528 | Completed | Phase 4 | Cholecalciferol Supplementation Effect on Parathyroid Hormone in Hemodialysis Patients | October 15, 2015 | May 2018 |
NCT03649802 | Completed | Phase 2 | Vitamin D and Arterial Stiffness in Elderly | August 16, 2018 | December 31, 2021 |
NCT03683238 | Completed | Nutritional Status and Hidradenitis Suppurativa (Acne Inversa) | May 2015 | May 2018 | |
NCT03686150 | Completed | N/A | Vitamin D Oral Replacement in Asthma | January 30, 2019 | September 30, 2021 |
NCT03734250 | Completed | D Vitamin Effects on Neuromuscular Blocker Reverse Time | November 1, 2014 | March 1, 2018 | |
NCT03735303 | Completed | N/A | Effect of Vitamin D3 and Omega-3FA on Leptin and HbA1C With Vitamin D Deficiency | December 1, 2018 | June 1, 2019 |
NCT03773809 | Completed | N/A | Impact of Vitamin D3 Administration on Cardiac Autonomic Tone in Asthma Chronic Obstructive Pulmonary Disease(COPD) Overlap Patients | August 1, 2017 | August 31, 2018 |
NCT03782805 | Completed | N/A | Effect of Vitamin D Supplementation on Inflammatory Markers | May 9, 2018 | July 9, 2018 |
NCT03783273 | Completed | N/A | The Influence of Food Matrix Delivery System on the Bioavailability of Vitamin D3 | January 8, 2019 | May 26, 2020 |
NCT03810261 | Completed | N/A | Challenges in Achieving Adequate Vitamin D Status in the Adult Population/ Part 2 | January 8, 2019 | April 2, 2019 |
NCT03813927 | Completed | N/A | Vitamin D Treatment of Diabetic Patients With Foot Ulcers | April 1, 2016 | July 3, 2018 |
NCT03820895 | Completed | Vitamin D Levels in Adolescent Idiopathic Scoliosis | October 1, 2016 | January 10, 2019 | |
NCT03871868 | Completed | Vitamin D Levels And Myoma Uteri | December 1, 2018 | March 1, 2019 | |
NCT03873935 | Completed | Vitamin D in Periodontal and Cardiovascular Disease Progression | January 2, 2015 | February 5, 2019 | |
NCT03890458 | Completed | Phase 4 | The Effect of Vitamin D on Fertility | May 1, 2017 | November 30, 2017 |
NCT03894735 | Completed | Vitamin D in Ectopic Pregnancies | October 1, 2015 | June 1, 2017 | |
NCT03919812 | Completed | N/A | Immunomodulatory Vitamin D in Thalassemia | April 1, 2018 | August 15, 2018 |
NCT03920150 | Completed | Phase 3 | Vitamin D 24'000 IU for Oral Intermittent Supplementation | September 30, 2019 | May 31, 2020 |
NCT03986268 | Completed | N/A | Vitamin D Can Increase Pathological Response of the Breast Cancer Patients Treated With Neoadjuvant Therapy | May 10, 2019 | December 10, 2020 |
NCT04005573 | Completed | N/A | The Combined Effect of Omega-3 Fatty Acid and Vitamin D3 on Lipid Profile Levels and Oxidized Low Density Lipoprotein | July 10, 2019 | January 1, 2020 |
NCT04005612 | Completed | N/A | Effect of Vitamin d and Omega 3 on Osteocalcin | November 1, 2019 | February 1, 2020 |
NCT04010942 | Completed | Phase 4 | Vitamin D for Polycystic Ovary Syndrome Clomiphene Resistant Women | April 1, 2018 | March 30, 2019 |
NCT04030182 | Completed | Vitamin D Deficit in Women With Uterine Fibroids | December 1, 2019 | October 9, 2021 | |
NCT04033796 | Completed | N/A | Vitamin D Supplementation D_SAF Pilot Study | December 1, 2014 | June 10, 2016 |
NCT04038853 | Completed | Phase 4 | Vitamin D in Fatty Liver Disease | December 1, 2015 | April 1, 2019 |
NCT04066842 | Completed | Vitamin D in Systemic Sclerosis Patients With Periodontitis | November 1, 2015 | May 30, 2019 | |
NCT04117581 | Completed | N/A | A Study to Investigate the Effect of Vitamin D3 Supplementation on Asthma Symptoms in Adults With Asthma (VITDAS) | October 28, 2019 | April 1, 2022 |
NCT04156074 | Completed | N/A | Innovative Food Structures to Enhance Nutrient Bioavailability | November 4, 2019 | December 31, 2021 |
NCT04183257 | Completed | Phase 4 | Effect of Escalating Oral Vitamin D Replacement on HOMA-IR in Vitamin D Deficient Type 2 Diabetics | September 30, 2016 | July 30, 2017 |
NCT04204304 | Completed | N/A | Relationship Between Serum Vitamin D Levels and Musculoskeletal Adverse Effects in Patients Using Isotretinoin | March 15, 2019 | October 1, 2019 |
NCT04207294 | Completed | N/A | Vitamin D Enriched Meat Project (Acute Study) | January 16, 2020 | April 10, 2020 |
NCT04209231 | Completed | Effect of Vitamin D on Periodontal Disease | November 2015 | April 2016 | |
NCT04276649 | Completed | A Retrospective Analysis: the Influence of Caltrate Supplement on the Effect of Mesalazine in Ulcerative Colitis | January 1, 2015 | March 31, 2021 | |
NCT04291833 | Completed | N/A | Prospective, Assessment of Vitamin D and Calcium Supplementation, Improvement of Nutritional Status and Preoperative Rehabilitation in Patients Before Knee Arthroplasty. | January 1, 2015 | December 31, 2017 |
NCT04292873 | Completed | N/A | Effects of Enteral Supplement Vitamin D Incritically Ill Patients | March 16, 2020 | March 31, 2023 |
NCT04307784 | Completed | N/A | The Effects of Vitamin D3 Alone and in a Combination With Omega-3 on the Association of C-peptide With Glycemic Control | March 10, 2020 | June 30, 2020 |
NCT04319289 | Completed | N/A | Effect of Aerobic Interval Training With Vitamin D Supplement on Functional Capacity and Perceived Myalgia | January 12, 2020 | May 20, 2020 |
NCT04323852 | Completed | Phase 4 | Can Vitamin D Reduce Heart Muscle Damage After Bypass Surgery? | September 1, 2017 | January 21, 2019 |
NCT04324853 | Completed | Helminth Infection During Pregnancy on Vitamin D Regulation: HELMVIT Study | January 28, 2019 | December 31, 2022 | |
NCT04359524 | Completed | N/A | Vitamin D Supplementation in Conscripts | October 1, 2016 | April 25, 2017 |
NCT04377386 | Completed | N/A | Efficacy of Oral Vitamin D Supplementation in Adolescents and Young Adults. | August 3, 2020 | February 2, 2021 |
NCT04377399 | Completed | Phase 4 | High vs Low Dose Vitamin D in Patients With Diabetic Peripheral Neuropathy | January 10, 2018 | January 25, 2020 |
NCT04386044 | Completed | Investigating the Role of Vitamin D in the Morbidity of COVID-19 Patients | June 1, 2020 | September 8, 2020 | |
NCT04405141 | Completed | Uroflowmetry Results and Vitamin D Levels | January 1, 2017 | December 30, 2017 | |
NCT04407286 | Completed | Phase 1 | Vitamin D Testing and Treatment for COVID 19 | May 19, 2020 | November 30, 2020 |
NCT04407572 | Completed | Evaluation of the Relationship Between Zinc Vitamin D and b12 Levels in the Covid-19 Positive Pregnant Women | April 20, 2020 | June 14, 2020 | |
NCT04450199 | Completed | Early Phase 1 | Does Supplementing Vitamin D Deficiency Affect Fusion Healing Rates in Elective Foot and Ankle Surgery? | July 24, 2020 | March 11, 2024 |
NCT04461665 | Completed | N/A | Effects of Vitamin D Supplementation on Immune Function in Infants | August 18, 2015 | December 30, 2016 |
NCT04469257 | Completed | N/A | SUN LIGHT EXPOSURE AND VITAMIN D LEVEL IN NURSING HOME | June 27, 2018 | August 1, 2018 |
NCT04476511 | Completed | Phase 3 | The Efficacy and the Safety of Vitamin D3 30,000 IU for Loading Dose Schedules | September 5, 2018 | December 15, 2021 |
NCT04482465 | Completed | N/A | Omega 3 and Vitamin D Dosage in a Population With Moderate to High Risk of AMD | April 20, 2017 | October 5, 2017 |
NCT04525820 | Completed | N/A | High Dose Vitamin-D Substitution in Patients With COVID-19: a Randomized Controlled, Multi Center Study | December 15, 2020 | November 30, 2021 |
NCT04606017 | Completed | Effect of Vitamin D Supplementation on Infliximab Response in Patients With Crohn's Disease | January 1, 2014 | June 1, 2020 | |
NCT04621500 | Completed | Phase 2 | Vitamin D Supplementation in RNA-seq Profiles of Single-core Prostate Samples, Among Veterans | June 4, 2019 | February 4, 2022 |
NCT04628000 | Completed | Baseline Vitamin D Deficiency and COVID-19 Disease Severity | October 27, 2020 | April 14, 2022 | |
NCT04637880 | Completed | 25- Hydroxyvitamin D Levels in Pregnancy and Effects on Pregnancy Related Disorders | July 2012 | July 1, 2018 | |
NCT04652544 | Completed | Phase 3 | Vitamin D Supplementation in Individuals With a Chronic Spinal Cord Injury | May 19, 2021 | January 23, 2024 |
NCT04687527 | Completed | Vitamin D Levels and Postoperative Pain in Laparoscopic Cholecystectomy | May 15, 2020 | April 30, 2021 | |
NCT04694976 | Completed | Vitamin D Status in Children With Sickle Cell Disease Living in Lyon, France | February 4, 2021 | February 3, 2022 | |
NCT04735926 | Completed | Phase 2/Phase 3 | Efficacy and Safety of Calcifediol vs Placebo in Subjects With Vitamin D Deficiency | December 23, 2020 | April 25, 2023 |
NCT04738760 | Completed | Clinical Outcomes of High Dose Vitamin D Versus Standard Dose in COVID-19 Egyptian Patients | December 1, 2020 | August 1, 2021 | |
NCT04768023 | Completed | N/A | 12 Weeks Vitamin D Supplementation and Physical Activity in PD Patients With DBS | November 1, 2019 | February 28, 2022 |
NCT04780776 | Completed | N/A | Evaluating the Effect of Solius UV Light Source in Improving Vitamin D Status | February 23, 2022 | October 20, 2023 |
NCT04818957 | Completed | N/A | Vitamin D Replacement Using Oral Thin Film (OTF) Cholecalciferol in Patients Undergoing Hematopoietic Stem Cell Transplantation | June 7, 2021 | April 20, 2022 |
NCT04822038 | Completed | N/A | Immunomodulating Effects of Supplementation With 25-OH Vitamin D | June 1, 2017 | December 31, 2019 |
NCT04865432 | Completed | N/A | Solius UV Light Source in Improving Serum Levels of 25-hydroxyvitamin D | August 24, 2021 | December 12, 2021 |
NCT04885803 | Completed | N/A | Vitamin D Absorbance Study - Clinical Trial of the Absorbance of Nano Liquid D3 | March 26, 2021 | July 30, 2021 |
NCT04891211 | Completed | N/A | Retinal Changes in Vitamin D Deficiency | February 12, 2021 | March 10, 2021 |
NCT04915963 | Completed | Phase 3 | Vitamin D Supplementation in Intensive Care Unit Patients | January 20, 2016 | May 30, 2019 |
NCT04918368 | Completed | Vitamin D and Sleep Disorders in Pregnancy | August 20, 2017 | March 15, 2019 | |
NCT04935034 | Completed | N/A | Absorption Kinetics and Efficacy of Vitamin D Enriched Supplements in Older Adults. | July 1, 2018 | May 31, 2021 |
NCT04939636 | Completed | N/A | Vitamin D Supplementation in Estonian Conscripts | July 19, 2021 | June 16, 2022 |
NCT04939792 | Completed | Early Phase 1 | Optimization of Blood Levels of 25(OH)-Vitamin D in African Americans | November 6, 2020 | October 31, 2022 |
NCT04944212 | Completed | Prevalence of Vitamin D Deficiency in Pregnant Women and Their Fetus in North Jordan | October 31, 2021 | July 30, 2022 | |
NCT04945577 | Completed | The Relationship Between Vitamin D Levels, Inflammatory Parameters and Disease Severity of COVID-19 Infection | July 1, 2020 | August 1, 2020 | |
NCT04979065 | Completed | Phase 2 | Nutrition, Immunity, and Covid-19 in Obese People | July 24, 2021 | December 30, 2022 |
NCT04986319 | Completed | Reference Interval of Vitamin D of Coastal Fishermen in Cox's Bazar District of Bangladesh | January 2017 | August 15, 2021 | |
NCT05014048 | Completed | N/A | Vitamin D Supplementation for the Prevention of Acute Respiratory Infections: a RCT in Young Finnish Men | January 4, 2018 | May 14, 2018 |
NCT05024110 | Completed | N/A | Effect of Exercise Intensity on Vitamin D | January 25, 2021 | May 14, 2021 |
NCT05066490 | Completed | N/A | Effect of Exercise on Vitamin d in Obese | October 6, 2020 | March 25, 2021 |
NCT05073029 | Completed | N/A | Open Label Randomized Clinical Study to Promote a Healthy Lifestyle in Medical Students | February 10, 2019 | November 10, 2019 |
NCT05141968 | Completed | N/A | Vitamin D Supplementation and Glycemic Control Improvement Among Type 1 Diabetic Children | October 1, 2017 | June 16, 2021 |
NCT05149339 | Completed | Phase 1/Phase 2 | Vitamin D Effect on A Disintegrin-like And Metalloprotease Thrombospondin1 Motif 13& Interleukin 6 in Leukemia | March 1, 2019 | March 15, 2021 |
NCT05221983 | Completed | COVID-19 and Vitamin D: Length of Hospital Stay and Mortality | August 21, 2021 | November 16, 2021 | |
NCT05228925 | Completed | GraviD-child Follow-up of the Children´s Health, Growth and Development Within the GraviD-study | February 1, 2022 | February 14, 2023 | |
NCT05343273 | Completed | 25-Hydroxyvitamin D Levels in Patients With Periodontitis (Stage III) | March 10, 2022 | May 10, 2022 | |
NCT05364567 | Completed | N/A | Synergistic Effect of Vitamin D Supplementation in Patients With Vitiligo and Vitamin D Deficiency | May 1, 2018 | May 1, 2022 |
NCT05385445 | Completed | N/A | Electronic Medical Records to Increase Adherence to the Choosing Wisely Recommendations | January 1, 2016 | December 31, 2019 |
NCT05398939 | Completed | Impact of COVID-19 Vaccination on Serum 25-hydroxyvitamin D Level | May 25, 2022 | November 29, 2022 | |
NCT05408273 | Completed | Vitamin D and Microvascular Function in Postmenopausal Women | July 4, 2019 | December 17, 2021 | |
NCT05430932 | Completed | N/A | Effect Of Laparoscopic Sleeve Gastrectomy on Vitamin D, Parathormone and Calcium Levels | October 1, 2018 | December 1, 2020 |
NCT05434377 | Completed | N/A | A Study of Fixed Dose Versus Serum Level-Based Titration Regimen of Vitamin D Supplementation in Dialysis Patients | August 1, 2022 | December 31, 2023 |
NCT05460338 | Completed | Phase 2/Phase 3 | Vitamin D, Oxidative Stress and Inflammation in Hemodialysis | May 15, 2022 | January 26, 2023 |
NCT05502068 | Completed | N/A | The Effects of a Sublingual Sprayable Microemulsion of Vitamin D on Inflammatory Markers in COVID-19 Patients | February 1, 2021 | June 9, 2021 |
NCT05506696 | Completed | N/A | Vitamin D Supplementation Study | September 24, 2012 | March 31, 2021 |
NCT05591170 | Completed | Phase 4 | Effect of Single High Dose of Cholecalciferol on Serum Metabolites of Vitamin D | April 1, 2021 | August 31, 2021 |
NCT05630339 | Completed | N/A | Magnesium and Vitamin D Combination for Post-COVID Syndrome | January 30, 2022 | September 1, 2023 |
NCT05649462 | Completed | Effect of Vitamin D Supplementation on Vedolizumab Response in Patients With Ulcerative Colitis | January 1, 2020 | June 1, 2022 | |
NCT05654818 | Completed | N/A | Peripheral Immunological Effects of High-dose Vitamin D Treatment in Healthy Subjects | April 13, 2023 | October 10, 2023 |
NCT05661006 | Completed | N/A | ETOL-Elderly Study of the Efficiency of the Innovative Food Supplement in Elderly Adults | February 20, 2020 | June 29, 2020 |
NCT05706259 | Completed | N/A | A Comparative Dissolution and Absorption Study of an Orodispersible Powder, Chewable Tablet and Soft Gel Capsule Vitamin D3 Supplementation | January 11, 2023 | April 30, 2023 |
NCT05806723 | Completed | Phase 4 | Effects of High Intensity Statin Therapy on Steroid Hormones and Vitamin D in Type 2 Diabetic Men | March 1, 2021 | September 15, 2022 |
NCT05848349 | Completed | Vitamin D Status Among Infertile Women in Sweden | September 1, 2020 | August 30, 2021 | |
NCT05916053 | Completed | N/A | Supplementation and Depressive Symptomatology Incidence Among Saudi Arabian Adults | September 1, 2021 | March 1, 2022 |
NCT05922696 | Completed | Phase 2/Phase 3 | Cholecalciferol Supplementation in Hemodialysis Patients | May 15, 2022 | January 26, 2023 |
NCT06002035 | Completed | Study on Clinical Value of Vitamin D in Recurrent Spontaneous Abortion | January 1, 2021 | July 25, 2023 | |
NCT06033105 | Completed | Vitamin D Deficiency as a Risk Factor for the Development and Malignant Transformation of Oral Lichen Planus | August 1, 2023 | August 24, 2023 | |
NCT06096194 | Completed | N/A | Vitamin D3-enhanced Eggs in Preschool Children | July 15, 2018 | December 21, 2019 |
NCT06098820 | Completed | N/A | The Effect of UV-C Enriched Foods on Vitamin D Deficiency | March 5, 2023 | August 31, 2023 |
NCT06114381 | Completed | N/A | Physical Exercise and Diet Management in Vitamin D Deficient Females | January 1, 2023 | June 30, 2023 |
NCT06204796 | Completed | Phase 4 | The Role of Vitamin D in Amelioration of Oral Lichen Planus and Its Effect on Salivary IFN-γ Level | August 1, 2023 | September 1, 2023 |
NCT06263140 | Completed | Vitamin D Levels in Non-immediate Drug Hypersensitivity Case-control Study | May 30, 2021 | February 1, 2022 | |
NCT06274203 | Completed | N/A | High Dose Vitamin D Supplementation in Children With Sickle Cell Disease | May 3, 2023 | February 10, 2024 |
NCT06282640 | Completed | Phase 4 | Comparıson Of Electromyography Results Before And After Vıtamın D Treatment In Patıents Wıth Carpal Tunnel Syndrome | December 30, 2021 | August 30, 2022 |
NCT06412705 | Completed | N/A | Vit D and Post-extractive Bone Turnover | October 2, 2023 | April 30, 2024 |
NCT06452251 | Completed | Vitamin-D Insufficiency and Implants | January 1, 2022 | October 1, 2023 | |
NCT01049048 | Completed | Early Phase 1 | The Effect of Vitamin D Statues on Endothelial Function | March 2009 | October 2010 |
NCT01050387 | Completed | N/A | Effects of Vitamin D Dose and Genotype of the Binding Protein in Infants and Children | January 2010 | February 2013 |
NCT01058720 | Completed | Phase 4 | Efficacy of Daily Vitamin D3 Supplementation in Normal Weight Adolescents | December 2009 | January 2011 |
NCT01068418 | Completed | N/A | Vitamin D Supplementation Reduces Renin-Angiotensin System Activity in Obesity | February 2010 | September 2011 |
NCT01090206 | Completed | N/A | Correlation Between Vitamin D Status and Bone Mineral Density in Patients With Hemophilia | March 2010 | March 2015 |
NCT01093417 | Completed | Phase 2 | Study of Vitamin D and Effect on Heart Disease and Insulin Resistance | January 2010 | October 2010 |
NCT01105689 | Completed | Utility of a Urine Screening Tool for Vitamin D Deficiency in Infants and Toddlers | March 2010 | July 2011 | |
NCT01112891 | Completed | Phase 4 | Vitamin D in Pregnancy and Lactation | March 2010 | February 2013 |
NCT01118806 | Completed | Vitamin D Levels in Residents in Medicine | May 2010 | November 2011 | |
NCT01119378 | Completed | N/A | Study to Observe the Capability to Absorb Calcium as an Measure of Adequate Levels of Vitamin D | December 2010 | December 2013 |
NCT01130181 | Completed | Phase 3 | VITdAL@ICU - Correction of Vitamin D Deficiency in Critically Ill Patients | May 2010 | September 2012 |
NCT01141972 | Completed | Phase 1 | The Role of Vitamin D in Menopause: Relationship to Menopausal Symptoms in Body Composition | September 2010 | February 2012 |
NCT01166165 | Completed | Phase 2 | Effect of Vitamin D Replacement During Winter Months in Patients With Hypertension | July 2010 | April 2011 |
NCT01170273 | Completed | Phase 3 | Vitamin D in Vulnerable Adults (VIVA-VA) | August 2010 | December 2014 |
NCT01170494 | Completed | N/A | Effect of Vitamin D Oral Supplements on 25 OH Vitamin D Levels | February 2013 | April 2016 |
NCT01175798 | Completed | N/A | Impact of Vitamin D Repletion in Hemodialysis Patients | August 2010 | August 2013 |
NCT01180946 | Completed | N/A | Vitamin D Deficiency in Adolescent Girls | September 2010 | April 2013 |
NCT01187459 | Completed | Phase 4 | Vitamin D in Pediatric Crohn's Disease | September 2010 | February 2012 |
NCT01190683 | Completed | Phase 3 | Vitamin D and Muscle Strength and Surface (Electromyography) EMG | August 2010 | April 2011 |
NCT01208636 | Completed | Environmental & Genetic Influences on Vitamin D Status | August 2010 | August 2010 | |
NCT01214928 | Completed | N/A | Hemodialysis Vitamin D Pilot | January 2011 | June 2011 |
NCT01229189 | Completed | N/A | Evaluation of the Effectiveness of Vitamin D Supplementation to Pregnant Women and Their Infants in Pakistan. | February 2010 | August 2011 |
NCT01229878 | Completed | N/A | Vitamin D Supplementation in Kidney Disease | December 1, 2011 | December 30, 2022 |
NCT01240265 | Completed | Phase 2/Phase 3 | Vitamin D Supplementation in Breastfeeding Women | December 2010 | August 2011 |
NCT01240512 | Completed | N/A | DAYLIGHT: Vitamin D Therapy in Individuals at High Risk of Hypertension | December 2010 | October 2013 |
NCT01244204 | Completed | N/A | Role of Vitamin D in Innate Immunity to Tuberculosis | November 2009 | March 2011 |
NCT01250899 | Completed | N/A | Vitamin D in HIV-Infected Patients on HAART | October 2010 | June 2012 |
NCT01268176 | Completed | Phase 1 | The Effect of a Meal on Vitamin D Absorption | December 2010 | June 2012 |
NCT01287455 | Completed | N/A | The Effect of Vitamin D Replacement on Airway Reactivity, Allergy and Inflammatory Mediators in Exhaled Breath Condensate in Vitamin D Deficient Asthmatic Children | February 2011 | December 2012 |
NCT01292720 | Completed | Phase 3 | Vitamin D Supplementation in Chronic Stable Heart Failure | April 2011 | October 2013 |
NCT01295879 | Completed | Phase 4 | Vitamin D Repletion in Stone Formers With Hypercalciuria | September 2010 | June 2011 |
NCT01306656 | Completed | Phase 4 | Vitamin D Repletion in Primary Hyperparathyroidism | October 2011 | February 2017 |
NCT01317940 | Completed | Phase 2 | Nutrition and Body Composition in Acute Lymphoblastic Leukemia | March 2011 | January 2016 |
NCT01325610 | Completed | N/A | Vitamin D Effect on Calcium Absorption on Persons on Hemodialysis | April 2011 | February 2012 |
NCT01325987 | Completed | N/A | African American Children, Glycemic Control, and Type 2 Diabetes | March 2011 | June 2013 |
NCT01328704 | Completed | Evaluate the Change in Iron, Vitamin D, and C-Reactive Protein Level (CRP) in a 12 to 24 Week Period | January 2012 | March 2013 | |
NCT01349127 | Completed | N/A | Trial to Assess Vitamin D Requirements in Lactating Women | August 2008 | December 2009 |
NCT01354262 | Completed | Phase 2 | Effect of Vitamin D Supplementation on Hemoglobin A1c | March 2011 | June 2012 |
NCT01363167 | Completed | N/A | Identifying Vitamin D Deficiency in Very Low Birth Weight Infant (VLBW) Infants Part 2 | October 2011 | October 2013 |
NCT01385098 | Completed | N/A | Efficacy of Vitamin D Supplementation in Bariatric Surgery Patients | July 2011 | September 2015 |
NCT01395589 | Completed | Phase 1 | Rapid vs Maintenance Vitamin D Supplementation in Deficient Children With Asthma to Prevent Exacerbations. | February 2011 | June 2014 |
NCT01397383 | Completed | Vitamin D and Functional Outcomes After Total Hip Arthroplasty (THA) | March 2010 | February 3, 2014 | |
NCT01399151 | Completed | N/A | Assessment of Vitamin D Supplementation and Immune Function | January 2011 | April 2014 |
NCT01410084 | Completed | N/A | Improving Vitamin D Status in Home-bound Elders | October 2010 | August 2011 |
NCT01410305 | Completed | Vitamin D and HIV-Cardiovascular Disease in Children and Young Adults | September 2011 | December 2014 | |
NCT01413230 | Completed | Vitamin D Supplementation in Systemic Lupus Erythematosus | January 2010 | January 2011 | |
NCT01417351 | Completed | N/A | Effects of Vitamin D Supplementation During Pregnancy on Clinical Outcomes and Immune Function | August 2010 | May 2013 |
NCT01419119 | Completed | Phase 4 | Vitamin Deficiency in Immigrants, a Treatment Study | September 2011 | October 2012 |
NCT01426347 | Completed | N/A | Treatment of Vitamin D Deficiency in Patients With Rheumatoid Arthritis | January 2009 | January 2012 |
NCT01430793 | Completed | N/A | Determination of Effective Vitamin D Replacement and Monitoring Strategies in Vitamin D Deficiency State | November 2011 | March 2013 |
NCT01432678 | Completed | Vitamin D Status in Pediatric Asthma | April 2011 | June 2013 | |
NCT01436916 | Completed | Phase 4 | Oral Cholecalciferol in Prevention of Type 2 Diabetes Mellitus | September 2011 | December 2012 |
NCT01437696 | Completed | Phase 4 | How Much Vitamin D is Required to be Protective Against Deficiency During the Winter Months? | October 2011 | May 2014 |
NCT01443728 | Completed | Phase 2 | Vitamin D for Sickle-cell Respiratory Complications | December 13, 2011 | February 15, 2015 |
NCT01443897 | Completed | N/A | Effect of Consumption of Post-harvest UV-B Treated Mushrooms on Vitamin D Status of Healthy Adults | May 2010 | June 2011 |
NCT01465178 | Completed | Phase 3 | Improving the Understanding of the Response to Vitamin D Supplementation | December 2011 | December 2014 |
NCT01477034 | Completed | N/A | Vitamin D and Adipose Tissue Inflammation | November 2011 | June 2013 |
NCT01488734 | Completed | N/A | Bioavailability and Biological Effects of Vitamin D2 Contained in Mushroom | November 2011 | September 2013 |
NCT01490333 | Completed | Phase 2 | Sunweavers: Supporting Native American Women's Vitamin D Research | July 2011 | April 2014 |
NCT01497132 | Completed | Phase 4 | Effects of Vitamin D on Beta Cell Function and Insulin Sensitivity in Pre-diabetes and Diabetes Mellitus Type 2 | January 2012 | May 2013 |
NCT01503216 | Completed | N/A | Safety and Bioefficacy of Vitamin D2 and Vitamin D3 | January 2012 | May 2012 |
NCT01506557 | Completed | Phase 4 | Vitamin D Supplementation of Lactating Mothers | March 2011 | November 2012 |
NCT00092066 | Completed | Phase 3 | A Study to Evaluate the Safety, Tolerability, and Efficacy of an Investigational Drug and Dietary Supplement in Men and Postmenopausal Women With Osteoporosis (0217A-227) | September 24, 2003 | May 1, 2004 |
NCT01512537 | Completed | N/A | Alternative Treatments of Vitamin D Deficiency | February 2010 | November 2011 |
NCT01519986 | Completed | N/A | The Effect of Fat on Vitamin D Absorption | September 2011 | October 2011 |
NCT01535508 | Completed | Phase 2/Phase 3 | Open Label Clinical Trial of Vitamin D in Children With Autism | February 2012 | December 2015 |
NCT01537809 | Completed | N/A | Impact of Vitamin D Supplementation on Cardiometabolic Risk Factors [The Daily D Health Study] | June 2011 | December 2013 |
NCT01546103 | Completed | N/A | Vitamin D3 Supplementation Pilot Study | August 2011 | September 2012 |
NCT01548716 | Completed | A Study of 25-hydroxy Vitamin d Levels in Non-itching Hemodialysis Patients | September 2011 | February 2012 | |
NCT01549938 | Completed | Phase 2 | Cholecalciferol Intervention to Prevent Respiratory Infections Study | May 2012 | |
NCT01553344 | Completed | Serum Sclerostin Level & Treatment of Vitamin D Deficiency | March 2012 | November 2013 | |
NCT01570309 | Completed | N/A | Vitamin D Repletion in Coronary Artery Disease | August 2008 | March 2011 |
NCT01583621 | Completed | N/A | Vitamin D Supplementation in Overweight/Obese African American Adults and Youth (D-SUNNY) | November 2011 | August 2015 |
NCT01589783 | Completed | Vitamin D During Pregnancy | May 2012 | June 2015 | |
NCT01596842 | Completed | Phase 4 | Effect of Omega-3 Fatty Acid on Vitamin D Activation | May 2012 | December 2012 |
NCT01600430 | Completed | Phase 2/Phase 3 | Vitamin D Supplementation for Extremely Preterm Infants | June 2012 | December 2016 |
NCT01633853 | Completed | Phase 4 | Efficacy of Vitamin D2 to Treat Chronic Kidney Disease Mineral and Bone Disorder | July 2012 | September 2015 |
NCT01634607 | Completed | Bone Health and Vitamin D Status | December 1, 2019 | February 16, 2023 | |
NCT01636570 | Completed | Phase 2 | Vitamin D3 Supplementation for Heart Failure Patients | August 2012 | April 2015 |
NCT01639222 | Completed | Phase 1 | Human Pharmacology Trial of Calcium-vitamin D3 Tablet in Healthy Participants | July 2012 | August 2012 |
NCT01651000 | Completed | Phase 3 | Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency | September 2012 | July 2014 |
NCT01655810 | Completed | N/A | Vitamin D, Cardiovascular Disease, and African Americans | August 13, 2012 | February 9, 2018 |
NCT01656070 | Completed | Phase 2 | Vitamin D Supplementation in HIV-infected Youth | April 2011 | July 2012 |
NCT01688102 | Completed | N/A | The Effect of Oral Vitamin D Versus Narrow-Band UV-B Exposure on the Lipid Profile | September 2012 | July 2015 |
NCT01694355 | Completed | N/A | The Impact of Severe Vitamin D Deficiency and Its Correction on Bone Mineral Density (BMD) in Postmenopausal Women | October 2012 | December 2018 |
NCT01696409 | Completed | The Effect Of Vitamin D On Measures Of Bone Health And Gene Expression | July 2009 | June 2012 | |
NCT01696526 | Completed | N/A | Bioefficiency of of Conventional Fish and Vitamin D Fortified Fish | October 2012 | December 2012 |
NCT01704079 | Completed | Phase 3 | Safety and Efficacy of CTAP101 to Treat Secondary Hyperparathyroidism in Stage 3 or 4 CKD and Vitamin D Insufficiency | November 2012 | September 2014 |
NCT01721915 | Completed | Phase 4 | Vitamin D Treatment, Pharmacogenetics and Glucose Metabolism | October 2012 | October 12, 2017 |
NCT01726777 | Completed | Phase 2 | Effect of Vitamin D Supplementation on Glucose Tolerance in Subjects at Risk for Diabetes With Low Vitamin D. | October 2012 | September 2015 |
NCT01741181 | Completed | Phase 4 | Vitamin D Supplementation in Patients With Diabetes Mellitus Type 2 | September 2012 | November 2014 |
NCT01741233 | Completed | N/A | The Genetics Behind Vitamin D Status (VitDgen) | November 2012 | March 2013 |
NCT01741324 | Completed | N/A | Comparing Different Amounts of Vitamin D Supplementation to Preschool Children Living in Northern and Southern Sweden | November 2012 | July 2013 |
NCT01746264 | Completed | Phase 1 | Effect of Vitamin D Supplementation on Endothelial Function in Obese Adolescents | November 2012 | December 2013 |
NCT01778114 | Completed | N/A | Availability of Vitamin D in Orange Juice | December 2006 | June 2007 |
NCT01784029 | Completed | Phase 4 | Treatment Study of Vitamin D Deficiency in Adolescents | February 2013 | July 2014 |
NCT01793181 | Completed | Vitamin D Levels in Patients With Central Retinal Vein Occlusion- a Prospective Controlled Study | January 2013 | November 2014 | |
NCT01797302 | Completed | N/A | Vitamin D and Vascular Health in Children | August 2013 | August 13, 2018 |
NCT01815437 | Completed | N/A | Evaluating Vitamin D Content in Mushrooms | January 2012 | June 2013 |
NCT01816711 | Completed | Vitamin D Levels in Frail Elderly Patients With a Hip Fracture | January 2010 | September 2012 | |
NCT01817036 | Completed | Phase 1 | Vitamin D Intervention Trial in Healthy Chinese | January 2013 | July 2013 |
NCT01817231 | Completed | Epidemiological Analysis of Vitamin D and Breast Cancer Risk in Saudi Arabian Women | May 2009 | August 2009 | |
NCT01838447 | Completed | Phase 2 | Prevention of Vitamin D Deficiency Following Pediatric CHD Surgery: a Phase II Dose Evaluation Randomized Controlled Trial Comparing Usual Care With a High Dose Pre-operative Supplementation Regimen Based on the Institute of Medicine Daily Upper Tolerable Intake Level | July 2013 | December 2015 |
NCT01845142 | Completed | Phase 4 | Immunologic Action of a Single Dose Cholecalciferol | February 2013 | April 2014 |
NCT01848236 | Completed | N/A | Effects of Vitamin D Insufficiency in Man | August 2010 | February 2020 |
NCT01909063 | Completed | N/A | A Randomized Controlled Trial Testing The Effect Of A Multi-Nutrient Fortified Juice | January 2005 | January 2008 |
NCT01910792 | Completed | N/A | Ultraviolet Light And Vitamin D In Subjects With Fat Malabsorption Or After Gastric Bypass Surgery | March 2011 | February 2014 |
NCT01924910 | Completed | Phase 4 | A Single Wintertime Dose of Vitamin D3 to Prevent Winter Decline in Vitamin D Status in Healthy Adults | October 2012 | July 2017 |
NCT01926808 | Completed | Vitamin D Serum Concentrations & Supplementation in Children With Cerebral Palsy | June 2013 | ||
NCT01930539 | Completed | N/A | Treatment of Vitamin D Deficiency in Intestinal Rehabilitation Clinic Patients With a Portable Ultraviolet B Lamp | September 16, 2013 | December 1, 2015 |
NCT01971411 | Completed | Vitamin D Deficiency in Elderly African American Women in Central Texas | March 2006 | May 2007 | |
NCT01971801 | Completed | N/A | Vitamin D Supplementation in Older Adults With Urinary Incontinence | January 2014 | November 2017 |
NCT01990872 | Completed | N/A | Inter-relationship Between Vitamin D Requirements and Calcium Intake in Older Adults | October 2012 | November 2013 |
NCT01991054 | Completed | Phase 4 | The Effects of Vitamin D Supplementation on Patients With Type 2 Diabetes and Vitamin D Deficiency | December 2013 | January 2018 |
NCT01992133 | Completed | N/A | Effects of Vitamin D Supplementation on Glucose Metabolism in Women With Former Gestational Diabetes Mellitus | June 2011 | August 2012 |
NCT01993537 | Completed | Phase 4 | The Role of Vitamin D in the Pathophysiology of Chronic Failure | January 2013 | January 2016 |
NCT01998763 | Completed | Phase 1 | Vitamin D Intervention Trial in Healthy Chinese, Phase II | November 2013 | December 2015 |
NCT02008201 | Completed | Phase 3 | Vitamin D Status and Supplementation in Athletes | May 2012 | April 2014 |
NCT02009748 | Completed | Phase 2 | Vitamin D Supplementation in Cirrhotic Patients | December 2013 | June 2015 |
NCT02019836 | Completed | Comparison of Maternal and Neonatal Vitamin D Levels in Term Neonates With and Without Early Onset Sepsis | March 2012 | January 2013 | |
NCT02022475 | Completed | Phase 3 | Effect of Vitamin D Treatment on Fatigue | December 2013 | June 2015 |
NCT02024490 | Completed | The Effect of Maternal and Neonatal Vitamin D Levels on Respiratory Distress Syndrome in Preterm Infants | December 2012 | December 2013 | |
NCT02035423 | Completed | N/A | Community Interventional Trial (CITFOMIST) | January 2011 | June 2011 |
NCT02069990 | Completed | Phase 3 | Controlled, Randomized, Four-arm Comparative, Open Label, Multi-centric Clinical Trial to Compare the Efficacy and Safety Parameters of the Once-a-week or Once-a-month Administered 7000 IU, or 30000 IU Vitamin D (Cholecalciferol) to a 1000 IU Dosage Applied Daily in Vitamin D Deficient Patients | March 2013 | September 2013 |
NCT02091219 | Completed | Early Phase 1 | Effects of Vitamin D3 Versus 25OHD3 on Mineral Metabolism and Immune Function | June 2014 | December 7, 2019 |
NCT02099955 | Completed | Phase 1/Phase 2 | Vitamin D Deficiency and Replacement on Pulmonary and Endocrine Function in SCI | January 2012 | December 2016 |
NCT02118129 | Completed | N/A | Vitamin D Among Young Adults: an Intervention Study Using a Mobile 'App'. | September 2014 | September 2016 |
NCT02132442 | Completed | Phase 3 | Hepatic Dysfunction, Vitamin D Status, and Glycemic Control in Diabetes | March 2014 | October 2016 |
NCT02135913 | Completed | N/A | Roles of Vitamin D and HDL in Obese Children | January 1, 2016 | April 26, 2017 |
NCT02136771 | Completed | Phase 4 | Styrian Vitamin D Hypertension Trial | June 2011 | August 2014 |
NCT02145195 | Completed | N/A | The Effect of Vitamin D Supplements on Vitamin D Status, Cardiometabolic Health and Immune Defense in Danish Children | June 2014 | March 2015 |
NCT02158143 | Completed | N/A | A Single High-dose Oral Supplement of Vitamin D in Young Chinese | October 2013 | |
NCT02158598 | Completed | Phase 4 | Comparison of Changes in Serum 25(OH)D Concentrations Following Vitamin D Supplementation With Chewable Tablets Versus Pills | June 2014 | May 9, 2018 |
NCT02168660 | Completed | Phase 2 | Correction of Vitamin D Levels and Its Effect on Insulin Resistance and Weight Gain in Obese Youth | March 2011 | October 11, 2015 |
NCT02186028 | Completed | Phase 4 | Effect of Oral Daily Supplementation With 400 IU Vs 200 IU of Vitamin D in Term Healthy Neonates | July 2014 | July 2015 |
NCT02186535 | Completed | Phase 1 | The Role of Vitamin D in Female Reproductive Tract Immunity | August 2014 | July 2015 |
NCT02187146 | Completed | The Effects of Serum Vitamin D and IVF Outcome | September 2013 | December 2015 | |
NCT02190396 | Completed | Vitamin D Deficiency and Placental Calcification in Low-risk Obstetric Population - Are They Related? | March 2014 | May 2014 | |
NCT02210884 | Completed | N/A | Maternal Vit D Supplements & Infant and Maternal Biomarkers & Outcomes in Southern Ethiopia | October 2014 | September 2016 |
NCT02214563 | Completed | Phase 4 | Cholecalciferol Supplementation for Anemia and Mineral and Bone Disorder in Hemodialysis Patients | August 2014 | December 2016 |
NCT02217553 | Completed | N/A | The Effect of Vitamin D Supplementation on HIV-associated Platelet Hyperreactivity | December 2013 | June 2014 |
NCT02234544 | Completed | Phase 4 | Effect of an Inhibitor of Cholesterol Absorption on Vitamin D Levels | October 2014 | April 2015 |
NCT02250625 | Completed | Study Vitamin D in Healthy Individuals | May 2014 | April 2015 | |
NCT02271971 | Completed | N/A | Effect of Vitamin D Supplementation on Metabolic Parameters of Patients With Psoriasis | October 2014 | October 2015 |
NCT02275650 | Completed | N/A | The Role of Narrowband Ultraviolet B Exposure in the Maintenance of Vitamin D Levels During Winter | September 2013 | May 2014 |
NCT02281162 | Completed | The Influence of Vitamin D on Atypical Antipsychotic-induced Weight Gain | November 2014 | September 2015 | |
NCT02282813 | Completed | Phase 3 | Extension Study of CTAP101-CL-3001 or CTAP101-CL-3002 | April 2013 | May 2015 |
NCT02293187 | Completed | N/A | Impact of Vitamin D on 25-hydroxyvitamin D Levels and Physical Function | March 23, 2015 | December 31, 2018 |
NCT02295228 | Completed | Hip Arthroplasty and Vitamin D Status | January 2015 | November 2015 | |
NCT02301520 | Completed | Vitamin D, Iodine, and Lead Levels in Haitian Infants and Children. | January 2015 | June 2015 | |
NCT02362269 | Completed | N/A | Personalized Vitamin D Supplementation in European and African Americans | October 30, 2015 | May 3, 2019 |
NCT02395081 | Completed | N/A | Trial of Vitamin D Supplements to Raise Calcidiol Levels of Pregnant Women in Mongolia | February 2015 | December 2016 |
NCT02404623 | Completed | N/A | The Effect of Vitamin D Administration to Premature Infants on Vitamin D Status and Respiratory Morbidity | April 2015 | February 12, 2018 |
NCT02414529 | Completed | N/A | Efficacy of Vitamin D Therapy on Glucose Homeostasis in Obese Adolescents | November 2013 | October 2015 |
NCT02416895 | Completed | Vitamin D Status and Immune Function | April 2014 | December 2015 | |
NCT02438488 | Completed | Vitamin D and Mortality: an Individual Participant Data Meta-analysis of Standardized 25-hydroxyvitamin D | April 2015 | October 2015 | |
NCT02443246 | Completed | Phase 3 | 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 | November 2014 | December 2015 |
NCT02451787 | Completed | Phase 2 | The 'Hidden' Biological Impact of Vitamin D Deficiency: a Biomarker Study; Part 2 | December 2015 | July 2016 |
NCT02460211 | Completed | N/A | Acute Effect of Systemic Stress on Measured Blood Concentrations of 25 (OH) Vitamin D | July 2015 | October 1, 2020 |
NCT02460380 | Completed | Phase 4 | The Effects of Vitamin D on Angiogenic Factors in Women With Polycystic Ovary Syndrome | October 2013 | March 2015 |
NCT02477956 | Completed | Phase 1 | Effect of a Monthly High Dose of Vitamin D3 on Bariatric Surgery Patients | November 2012 | December 2013 |
NCT02483026 | Completed | N/A | Nutritional Deficiencies Preventive Treatment Prior to Laparoscopic Sleeve Gastrectomy | January 2, 2018 | January 12, 2020 |
NCT02485197 | Completed | N/A | Muscle Metabolic Function in Older Adults With Different Vitamin D Status Before and After Exercise | March 2013 | June 2015 |
NCT02506439 | Completed | N/A | Nutritional Requirements for Vitamin D in Pregnant Women | November 1, 2014 | April 1, 2017 |
NCT02534064 | Completed | N/A | Effect of Consumption of Yogurt Fortified in Calcium and Vit. D on Circulating Levels of 25OHD in Postmenopausal Women | October 2014 | October 2015 |
NCT02539745 | Completed | Associations of Vitamin D Deficiency and Vitamin D Receptor Polymorphisms With the Risk of Primary Open-angle Glaucoma | July 2013 | March 2015 | |
NCT02553044 | Completed | N/A | Change in Free 25(OH)D After High Dose in Vitamin D Deficient Postmenopausal Women | October 2015 | August 2018 |
NCT02572960 | Completed | Phase 4 | Physiologic Interactions Between the Adrenal- and the Parathyroid Glands | October 2015 | May 2017 |
NCT02589444 | Completed | N/A | Vitamin D and Microbiota in Cystic Fibrosis | December 2015 | April 2017 |
NCT02590614 | Completed | N/A | Genetic, Dietary and Environmental Influences on Vitamin D Metabolism | November 2013 | April 24, 2019 |
NCT02613884 | Completed | Phase 2 | Safety, Efficacy, and Feasibility of High-dose Cholecalciferol in Pediatric Patients With Cystic Fibrosis | November 2016 | November 25, 2019 |
NCT02621320 | Completed | N/A | Vitamin D Supplementation in Wheelchair Indoor Athletes | November 2015 | August 2016 |
NCT02631629 | Completed | N/A | Food-based Solutions for Optimal Vitamin D Nutrition and Health | November 2015 | May 2016 |
NCT02661191 | Completed | N/A | Vitamin D Deficiency and Asthma Exacerbation | October 2012 | March 2014 |
NCT02662491 | Completed | N/A | Effects of Vitamin D and Calcium Supplementation on Health and Well-being of Vitamin D Deficient UAE Citizens | January 2017 | March 15, 2019 |
NCT02676674 | Completed | Phase 1 | Vitamin D Levels Following Topical Application of Vitamin D Ointment | March 2016 | June 15, 2017 |
NCT02678364 | Completed | N/A | Effect of Vitamin D-biofortified Eggs on Wintertime Serum 25-hydroxyvitamin D in Adults: Randomized Controlled Trial | January 2015 | December 2015 |
NCT05389618 | Enrolling by invitation | Dietary Challenges in the Population of Nursing Homes' Residents | May 26, 2022 | December 31, 2023 | |
NCT05795504 | Enrolling by invitation | N/A | Resistive Exercise Versus HIIT on Calcium and Vitamin D | March 1, 2023 | December 15, 2023 |
NCT05702970 | Not yet recruiting | Phase 4 | Beneficial Effects of Vitamin D Combined With Oral Iron Supplementation in Patients With Chronic Heart Failure and Iron Deficiency | January 15, 2024 | October 31, 2025 |
NCT06450925 | Not yet recruiting | N/A | Vitamin A Supplementation in Allogeneic Stem Cell Transplantation. | October 2024 | August 2029 |
NCT06111066 | Not yet recruiting | Vitamin D Levels in Neonatal Umbilical Cord Blood: Factors and Prognostic Analysis | January 1, 2024 | December 30, 2029 | |
NCT06199102 | Not yet recruiting | N/A | The High Initial Dose of Monitored Vitamin D Supplementation in Preterm Infants. | September 1, 2024 | December 31, 2027 |
NCT06258850 | Not yet recruiting | Phase 4 | REstoration of VItamin D in Pulmonary Arterial Hypertension | July 1, 2024 | December 2027 |
NCT04355572 | Not yet recruiting | N/A | Evaluation of the Clinical and Psychological Impact of Vitamin D Replacement in Adolescent Females at Risk for Polycystic Ovarian Syndrome (PCOS) | April 2024 | March 2025 |
NCT05009498 | Not yet recruiting | N/A | Vitamin D3 Supplementation for Vitamin D Deficiency in Rotator Cuff Repair Surgery | September 1, 2021 | August 1, 2024 |
NCT05568836 | Not yet recruiting | Phase 1/Phase 2 | Relationship Between Serum Vitamin D and Outcomes of Liver Transplantation in Cirrhotic Patients Undergoing Liver Transplantation and Effects of Vitamin D Supplementation in Post-transplant Period | November 1, 2022 | November 10, 2023 |
NCT06176157 | Not yet recruiting | Phase 4 | Vitamin D Supplementation in Pediatrics. Oral or Parenteral! D2 or D3 | December 2023 | April 2024 |
NCT05650151 | Not yet recruiting | N/A | Peri-operative Vitamin D Therapy for Hepatectomy | January 1, 2023 | January 31, 2024 |
NCT06366776 | Not yet recruiting | Emulated Study of Vitamin D Correction vs Non-Correction | April 2024 | December 2024 | |
NCT05852496 | Not yet recruiting | Phase 2 | Vit D and Peripheral Neuropathy in Taxane Naive Patients | July 1, 2023 | September 1, 2024 |
NCT05322538 | Not yet recruiting | N/A | Menier's Disease - Bone Density Study | October 1, 2022 | December 31, 2028 |
NCT05863949 | Not yet recruiting | N/A | Clinical Trial of Vit D and Calcium for Recurrent BPPV | July 2023 | July 2025 |
NCT05981534 | Recruiting | N/A | The Effectiveness of Vitamin D Supplementation in Patients With End-stage Knee Osteoarthritis | March 17, 2024 | November 30, 2025 |
NCT04677816 | Recruiting | Phase 2 | Impact of Vitamin D Supplementation on the Rate of Pathologic Complete Response in Vitamin D Deficient Patients | October 22, 2021 | March 2025 |
NCT03742505 | Recruiting | Phase 3 | Rapid Normalization of Vitamin D Deficiency in PICU | June 17, 2019 | August 31, 2025 |
NCT04898725 | Recruiting | N/A | Effects of Vitamin D Supplementation on Depression and Inflammatory Markers | April 12, 2021 | June 28, 2024 |
NCT05950204 | Recruiting | N/A | Effect of Supplementation With ω-3 Fatty Acids, Vitamin D and Calcium in Patients With Acute Lymphoblastic Leukemia. | September 10, 2022 | December 31, 2024 |
NCT05937789 | Recruiting | N/A | Effects of Early Vitamin D3 Supplementation on Clinical Outcomes for Critically Ill Patients | January 22, 2024 | December 31, 2026 |
NCT05549154 | Recruiting | N/A | A Study on Prevention Strategies for CKD-SHPT and Related Complications Based on General Vitamin D Supplementation | December 5, 2022 | October 30, 2023 |
NCT05656742 | Recruiting | N/A | Effects of Vitamin D on Cardiovascular Health in Black Women | January 25, 2023 | August 2024 |
NCT03483584 | Recruiting | Incidence of HANA Conditions in HIV-infected Individuals | April 6, 2018 | March 31, 2024 | |
NCT05659173 | Recruiting | Vitamin D Deficiency With Selected Vitamin D Receptor Gene Polymorphism in Gestational Hypertension | November 1, 2022 | September 30, 2024 | |
NCT04331639 | Recruiting | Phase 2 | High Dose Interval Vitamin D Supplementation in Patients With Inflammatory Bowel Disease Receiving Biologic Therapy | November 1, 2020 | September 2024 |
NCT06292195 | Recruiting | Effects of Vitamin D on Health Promotion During Pregnancy and Its Impact on Prematurity-Related Outcome | November 3, 2023 | December 31, 2025 | |
NCT03188796 | Recruiting | Phase 3 | The VITDALIZE Study: Effect of High-dose Vitamin D3 on 28-day Mortality in Adult Critically Ill Patients | October 10, 2017 | March 2025 |
NCT05724316 | Recruiting | N/A | Effects of Vitamin D on the Behaviours, Mental, and Physical Health of Prisoners | March 18, 2023 | March 2024 |
NCT04229368 | Recruiting | N/A | Effect of Vitamin D Status and Repletion on Postoperative Total Joint Arthroplasty Complications | September 1, 2019 | July 1, 2024 |
NCT03989778 | Recruiting | Phase 2 | Vitamin D and Polycystic Ovarian Syndrome (PCOS) | February 1, 2023 | June 13, 2025 |
NCT05084248 | Recruiting | Phase 4 | Vitamin D Deficiency in Adults Following a Major Burn Injury | September 29, 2022 | March 2025 |
NCT05018988 | Recruiting | N/A | Vitamin D in School Children | November 1, 2019 | October 30, 2025 |
NCT05824897 | Recruiting | The Cohort Study of the Correlation Between Serum 25(OH)D Level and Pregnancy Outcome | November 1, 2022 | January 31, 2024 | |
NCT05802433 | Recruiting | N/A | The Genetic Effects on Vitamin D Supplementation | May 16, 2022 | October 5, 2023 |
NCT05459298 | Recruiting | N/A | ViDES Trial (Vitamin D Extra Supplementation) | September 6, 2022 | December 1, 2027 |
NCT06203041 | Recruiting | N/A | Vitamin D Sulfates in Breastmilk | November 21, 2023 | December 2026 |
NCT05543928 | Recruiting | Phase 3 | Phase 3 Safety and Efficacy Study of CTAP101 Extended-release Capsules in Children With Secondary Hyperparathyroidism | January 31, 2023 | July 2025 |
NCT05449522 | Recruiting | N/A | Vitamin D for Critically Traumatic Patients | May 1, 2018 | July 1, 2026 |
NCT05431920 | Recruiting | N/A | Effects of Vitamin D Supplementation in Adolescents With Asthma, Obesity and Vitamin D Deficiency. | October 1, 2022 | August 1, 2024 |
NCT05517070 | Recruiting | Vitamin D Deficiency and Body Composition in the Patients With Hemophilia | January 1, 2021 | February 28, 2023 | |
NCT06067477 | Recruiting | N/A | Estimation of the Dietary Requirement for Vitamin D in Ethnic Groups | November 1, 2023 | September 2025 |
NCT03348280 | Recruiting | Vitamin D and Immune Mechanisms of Hypertension in Type 2 Diabetics | September 1, 2017 | December 31, 2023 | |
NCT05694689 | Recruiting | N/A | Randomized Trial of Enteral Vitamin D Supplementation in Infants < 28 Weeks Gestational Age or <1000 Grams Birth Weight | February 15, 2023 | June 1, 2026 |
NCT05860270 | Recruiting | Phase 4 | Oral Vitamin D Supplementation Prevent Peritoneal Dialysis-related Peritonitis | June 15, 2023 | May 31, 2026 |
NCT05216419 | Recruiting | Phase 4 | Prevention of Postoperative Hypocalcemia of Oral Vitamin D Supplementation Before Total Thyroidectomy | June 7, 2021 | October 31, 2024 |
NCT04840238 | Suspended | Phase 2 | 30000 IU Per Week Vitamin D Treatment in PCOS Patients | December 8, 2016 | September 2023 |
NCT04395638 | Suspended | N/A | Replenishing and Maintaining Vitamin D Status in Older Adults in Residential Care Facilities in NI | September 1, 2020 | February 28, 2021 |
NCT03066817 | Suspended | Phase 1/Phase 2 | Vitamin D and Bone Homeostasis in Ortho Polytrauma Patients | July 1, 2017 | March 2020 |
NCT03652987 | Suspended | Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS) | September 5, 2018 | September 2023 | |
NCT00974922 | Terminated | Phase 4 | Vitamin D Deficiency in Patients With Hypertension | August 2009 | December 2011 |
NCT01046773 | Terminated | Phase 1 | Vitamin D Supplementation as Non-toxic Immunomodulation in Children With Crohn's Disease | January 2010 | May 2017 |
NCT03615378 | Terminated | Early Phase 1 | Maintenance Dosing of Vitamin D in Crohn's Disease | August 30, 2018 | November 30, 2018 |
NCT02381600 | Terminated | N/A | An Evaluation of the Effect of Vitamin D Supplementation on the Cognitive Function of Older Subjects With Low Levels of This Vitamin | October 2015 | October 2016 |
NCT01145703 | Terminated | N/A | Vitamin D Supplementation and Metabolism in Vitamin D Deficient Elderly | May 2010 | February 2013 |
NCT02435771 | Terminated | Phase 4 | Efficacy Of Ergocalciferol In Adults According To BMI | July 2011 | April 2017 |
NCT01170442 | Terminated | Phase 3 | Does Vitamin D Improve Glycemic Control in Type II DM? | December 2011 | December 2013 |
NCT03734744 | Terminated | N/A | PK/PD of Vitamin D3 in Adults With CF | June 17, 2019 | May 16, 2022 |
NCT01183442 | Terminated | Phase 3 | Vitamin D Supplementation in CAD and Postchallenge Hyperglycemia | June 2010 | November 2012 |
NCT01234909 | Terminated | Asthma, Missed Immunizations, and Vitamin D Deficiency in Atopic Dermatitis | November 2010 | March 2013 | |
NCT00469599 | Terminated | N/A | Treatment of Secondary Hyperparathyroidism in the Uremic Patient | July 2007 | October 2010 |
NCT02563015 | Terminated | N/A | Can Correction of Low Vitamin D Status in Infancy Program for a Leaner Body Composition? | March 7, 2016 | September 20, 2020 |
NCT01312441 | Terminated | Phase 4 | Sustainability of Vitamin D Levels After Repletion With Ergocalciferol In Chronic Kidney Disease Stage 5D | January 2011 | August 2015 |
NCT01337635 | Terminated | N/A | Vitamin D Deficiency and Atopic Dermatitis | November 2010 | April 2013 |
NCT01385345 | Terminated | N/A | Vitamin D Replacement in Insulin Resistant South Asians | August 2012 | January 2014 |
NCT01419743 | Terminated | Effect of Vitamin D Supplementation on In-vitro Fertilization (IVF) Outcomes | August 2011 | January 2014 | |
NCT02868827 | Terminated | Phase 2/Phase 3 | Cholecalciferol Supplementation in Critically Ill Patients With Severe Vitamin D Deficiency. | August 27, 2017 | November 9, 2019 |
NCT02876822 | Terminated | N/A | High Dose Vitamin D Replacement in Patients Undergoing Hematopoietic Stem Cell Transplantation | August 26, 2016 | May 1, 2017 |
NCT04120064 | Terminated | Phase 1 | Treatment of Vitamin D Deficiency With Large Bolus Cholecalciferol | January 25, 2019 | January 15, 2021 |
NCT00996866 | Terminated | N/A | Vitamin D Supplementation Requirement in Obese Subjects | December 2008 | August 2013 |
NCT03148288 | Terminated | N/A | Vitamin D Supplementation in IBS | September 1, 2017 | March 20, 2018 |
NCT03270709 | Terminated | Phase 1 | Effect of High-Dose Vitamin D3 in Smokers and Non-Smokers With and Without HIV | April 11, 2018 | October 15, 2018 |
NCT01817699 | Terminated | Phase 4 | Correcting Anemia and Native Vitamin D Supplementation in Kidney Transplant Recipients | April 2013 | December 2018 |
NCT03356873 | Terminated | N/A | Impact of Correction of Vitamin D Deficiency in Oxidative Stress in Patients With Prediabetes (VICOX) | September 1, 2017 | July 18, 2022 |
NCT03380091 | Terminated | Phase 4 | Metformin, Vitamin D, and Depression in Polycystic Ovary Syndrome (PCOS) Trial | December 12, 2017 | September 1, 2019 |
NCT00585442 | Terminated | Early Phase 1 | Effects of Vitamin D on Renin Expression in Hypertensive Patients | May 2007 | June 2008 |
NCT04629534 | Terminated | Phase 4 | Mothers' Own Milk Optimization for Preterm Infants Project (MoMO PIP) Pilot Study | May 6, 2021 | April 1, 2022 |
NCT03471481 | Terminated | Magnesium as a Mediator of Bone and Vitamin D Metabolism in Patients on Antiepileptic Drug Therapy | August 10, 2015 | August 1, 2019 | |
NCT03472833 | Terminated | Phase 3 | High-dose Vitamin D3 in Pancreas Cancer | April 1, 2018 | April 20, 2021 |
NCT02166333 | Terminated | N/A | Study To Understand Fall Reduction and Vitamin D in You | June 30, 2015 | June 7, 2019 |
NCT02208310 | Terminated | Phase 4 | Trial of High Dose Vitamin D in Patient's With Crohn's Disease | April 2015 | April 2016 |
NCT02212652 | Terminated | N/A | Vitamin D to Improve Nutrition Prior to Bariatric Surgery and Investigate the Relationship With Negative Outcomes | January 2017 | April 2017 |
NCT03611049 | Terminated | Phase 2 | Improving Functionality in Older People | August 1, 2018 | July 19, 2019 |
NCT04308850 | Unknown status | Early Phase 1 | Exploring the Effects of Vitamin D Supplementation on the Chronic Course of Patients With Crohn's Disease With Vitamin D Deficiency | October 2020 | April 2021 |
NCT05106712 | Unknown status | N/A | Vitamin D Supplementation and Improvement of PCOS Therapy and IVF Outcomes in Infertile Saudi Women | November 1, 2021 | November 1, 2023 |
NCT03638037 | Unknown status | Correlation Between Maternal Vitamin D Level And Preterm Birth | September 2, 2018 | April 2019 | |
NCT03477136 | Unknown status | Serum and Semen Vitamin D Level With Semen Parameters | December 6, 2018 | April 2021 | |
NCT03482843 | Unknown status | Vitamin D Effect on Subarachnoid Hemorrhage | February 1, 2017 | December 31, 2019 | |
NCT02389179 | Unknown status | Phase 4 | Determination of Vitamin D Dose to Maintain Sufficiency Amongst Indian and Malay Women in the Tropics | August 2014 | July 2016 |
NCT03496246 | Unknown status | N/A | Vitamin D Status in Inflammatory Bowel Disease | April 2018 | June 2019 |
NCT02258035 | Unknown status | Isolation of Vitamin D Binding Protein Isoforms From Human Volunteers | November 2014 | December 2020 | |
NCT03534674 | Unknown status | N/A | Vitamin D3 Supplementation for AlloHSCT-RCT | June 15, 2018 | December 15, 2019 |
NCT02337257 | Unknown status | Early Phase 1 | Periodontal and Cardiometabolic Responses to Vitamin D Intervention in African Americans With Periodontal Disease | April 2014 | December 2015 |
NCT02795234 | Unknown status | N/A | Empirical Comperative Study Of Variation Blood Level Antibody Vitamin D at Different Groups Of Patients Compared Healthy Peoples | June 2016 | June 2017 |
NCT02803476 | Unknown status | Is There Association Between Vitamin D Levels And Insulin Resistance In Polycystic Ovary Syndrome? | March 2016 | August 2016 | |
NCT05047393 | Unknown status | Vitamin D Level and Pain Type in Coccygodynia | August 1, 2021 | February 28, 2022 | |
NCT00640237 | Unknown status | Phase 3 | Interventional Trial of Vitamin D Deficiency in the Patients of General Departments | March 2008 | August 2008 |
NCT01419821 | Unknown status | N/A | Vitamin D and Its Affect on Growth Rates and Bone Mineral Density Until Age 5 | September 2013 | September 2016 |
NCT01417923 | Unknown status | Phase 4 | The Immune and Clinical Impacts of Vitamin D in Patients With Chronic Musculo-skeletal Pain | September 2011 | December 2012 |
NCT04100226 | Unknown status | N/A | Vitamin D Deficiency and Effect of Its Supplementation on Interstitial Lung Diseases(ILD). | March 1, 2019 | January 1, 2020 |
NCT01477801 | Unknown status | Phase 2/Phase 3 | Effects of Cholecalciferol Supplementation in Patients With Chronic Heart Failure and LOw vITamind D Levels | November 2011 | September 2012 |
NCT03584529 | Unknown status | N/A | Association Between Vitamin D and the Development of Uterine Fibroids | September 15, 2018 | July 1, 2021 |
NCT04134065 | Unknown status | Early Phase 1 | the Effect of Vitamin D in Crohn's Disease | December 1, 2019 | December 31, 2020 |
NCT02192229 | Unknown status | Phase 2 | Efficacy of the Dose Regimen of Oral Vitamin D 50,000 IU in the Treatment of Vitamin D Deficiency | August 2014 | November 2014 |
NCT05104970 | Unknown status | Phase 2 | Comparative Pharmacokinetics of Two Different Oral Delivery Systems of Cholecalciferol | August 9, 2022 | February 10, 2023 |
NCT03063060 | Unknown status | The Impact of Vitamin D Deficiency on Hypocalcaemia Following Total Thyroidectomy | March 1, 2017 | March 1, 2018 | |
NCT03991845 | Unknown status | Phase 4 | A Trial to Evaluate the Effect of Vitamin D Supplementation in Patients With Chronic Urticaria | June 21, 2019 | December 28, 2019 |
NCT05141838 | Unknown status | Phase 4 | Vitamin D Status and Bone Metabolism Status in Children With Congenital Epidermolysis Bullosa | November 21, 2020 | January 2023 |
NCT02704624 | Unknown status | Phase 4 | Effects of Supplementation of Vitamin D in Patients With Crohn's Disease | December 2016 | February 2022 |
NCT01575717 | Unknown status | N/A | The Effect of Vitamin D Repletion in Patients With Hepatocellular Carcinoma on the Orthotopic Liver Transplant List | January 2012 | January 2013 |
NCT03931889 | Unknown status | N/A | Effects of Vitamin D3 Supplementation on Antioxidant Enzymes Status in Vitamin D3 Deficient Asthma COPD Overlap (ACO) Patients | March 1, 2018 | June 30, 2019 |
NCT01385085 | Unknown status | Impact of Work Environment Absent of Natural Light on Vitamin D Levels | November 2011 | ||
NCT04244474 | Unknown status | Phase 1/Phase 2 | Effect of Vitamin D Supplementation on Improvement of Pneumonic Children | September 9, 2019 | February 15, 2020 |
NCT04276636 | Unknown status | Early Phase 1 | Exploring the Effects of Caltrate Supplement on the Chronic Course of Crohn's Disease Patients With Vitamin D Deficiency | October 2020 | March 2021 |
NCT05151393 | Unknown status | Correlation Between Serum Vitamin D3 and Incidence of Uterine Leiomyoma | December 1, 2021 | February 15, 2022 | |
NCT04291313 | Unknown status | N/A | Vitamin D in Pregnancy | June 8, 2020 | May 2023 |
NCT01339741 | Unknown status | N/A | Efficacy of Vitamin D3 for the Treatment of Psoriatic Patients With Vitamin D Deficiency and Insufficiency | March 2011 | February 2012 |
NCT01039714 | Unknown status | Vitamin D Levels and Postoperative Hypocalcemia After Total Thyroidectomy | December 2009 | May 2010 | |
NCT03158155 | Unknown status | Prevalence of Early Childhood Caries in Egyptian Children With Serum Vitamin D Deficiency. | July 15, 2017 | July 18, 2018 | |
NCT03162406 | Unknown status | N/A | Effects of Vitamin D Supplementation During a Non-surgical Treatment of Generalized Chronic Periodontitis | May 18, 2017 | June 30, 2018 |
NCT01672047 | Unknown status | N/A | Effect of Vitamin D Supplementation on Coronary Calcification and Parathyroid Hormone in CKD Patients | April 2012 | December 2015 |
NCT03882099 | Unknown status | Vitamin D Level and Its Relation to Pre-eclampsia and Eclampsia | March 17, 2019 | October 2019 | |
NCT02598635 | Unknown status | Phase 4 | Effects of Cholecalciferol on Osteoprotegerin Levels in Patients on Peritoneal Dialysis | October 2015 | June 2017 |
NCT04179370 | Unknown status | Vitamin D and Health Status of British African-Caribbean Women | February 7, 2020 | June 2021 | |
NCT04309058 | Unknown status | Early Phase 1 | Observation of the Effect of Vitamin D Supplementation on Chronic Course of Patients With Ulcerative Colitis Based on Vitamin D Receptor Fok I Gene Polymorphism | March 2020 | March 2021 |
NCT05260255 | Unknown status | N/A | Effect of Vitamin D Supplement on Disease Activity in SLE | June 15, 2021 | December 1, 2022 |
NCT01705522 | Unknown status | Multimodal Approach in IBD Patients | October 2012 | October 2019 | |
NCT05276960 | Unknown status | Phase 4 | Efficacy of Intensive Cholecalciferol Monitoring and Supplementation on Serum vitD Levels in Pediatric Patients With CF | February 22, 2022 | September 30, 2023 |
NCT03232216 | Unknown status | N/A | Vitamin D Supplementation and Tibia Fracture. Does it Improve Healing Rate? | November 21, 2017 | August 18, 2023 |
NCT02594579 | Unknown status | Phase 3 | Effect of Vitamin D3 Supplementation on Muscle Mass in ICU Patient | October 2015 | December 2016 |
NCT03876704 | Unknown status | Phase 3 | Effects of Fat-soluble Vitamins Supplementation on Common Complications and Neural Development in Very Low Birth Weight Infants | January 29, 2019 | December 31, 2020 |
NCT00752401 | Unknown status | Phase 3 | Vitamin D3 Substitution in Vitamin D Deficient Kidney Transplant Recipients | May 2009 | July 2014 |
NCT01754961 | Unknown status | Phase 2 | Effects of Vitamin D on Inflammation in Liver Disease | November 2011 | January 2014 |
NCT03829943 | Unknown status | Vitamin D and Human Sperm DNA Fragmentation | March 21, 2019 | February 2022 | |
NCT00306410 | Unknown status | Phase 2 | The Prevalence of Vitamin D Deficiency and Effects of Vitamin D Supplementation in HIV-1 Infected Patients | January 2006 | July 2007 |
NCT01807845 | Unknown status | N/A | Bioavailability of Vitamin D Encapsulated in Casein Micelles, Compared to Its Bioavailability in a Synthetic Emulsifier Currently Used for Supplementation and Enrichment. | January 2013 | December 2013 |
NCT03289637 | Unknown status | N/A | Supplementation With Vitamin D to Patients With Heart Failure (D-Heart). | February 1, 2018 | February 1, 2020 |
NCT05384574 | Unknown status | N/A | Vitamin D Supplementation and Clinical Outcomes in Severe COVID-19 Patients | November 22, 2021 | July 2022 |
NCT04389424 | Unknown status | Relationship Between Body Composition, Food Consumption, and Micro and Macronutrients With Gene Expression in Breast Cancer | September 1, 2017 | January 30, 2022 | |
NCT02551835 | Unknown status | Vitamin D Supplements on Markers for Cardiovascular Disease and Diabetes: an Individual Participant Data Meta-analysis | April 2015 | August 2016 | |
NCT03586947 | Unknown status | N/A | Association Between Vitamin D and the Risk of Uterine Fibroids | September 15, 2018 | July 1, 2021 |
NCT04404842 | Unknown status | Development of a Screening Tool for the Risk of Vitamin D Deficiency | January 14, 2020 | January 31, 2022 | |
NCT04916925 | Unknown status | Phase 1/Phase 2 | Effect of Vitamin D Oral Supplementation in Poly Csytic Ovarian Women Resistant to Clomiphene Citrate | August 21, 2021 | December 1, 2021 |
NCT05389943 | Unknown status | Phase 1 | The Effect of Vitamin D3 Therapy in Post Menopausal Women and Assessment of Changes in Bone Mineral Density After Orally Vitamin D3 Administration | June 5, 2022 | November 15, 2022 |
NCT04412694 | Unknown status | Phase 4 | The Effect of Preoperative Oral Dexamethasone Supplementation on the Outcome of Thyroidectomised Patients. | July 1, 2020 | December 2022 |
NCT05394207 | Unknown status | N/A | Evaluation Of The Effect Of L. Casei DG® On Vitamin D Absorption In Patients Under Vitamin D Supplementation. | June 2023 | June 2024 |
NCT04906161 | Unknown status | Vitamin D and Serum Calcium Level Insufficiency and Early Dental Implant Failure | January 20, 2021 | June 30, 2022 | |
NCT03718182 | Unknown status | Phase 4 | Can Vitamin D Supplementation in People With Crohn's Disease Improve Symptoms as an Adjunct Therapy? | September 17, 2019 | December 31, 2020 |
NCT05415254 | Unknown status | N/A | Calcitriol Supplementation in COVID-19 Patients | June 12, 2022 | September 19, 2022 |
NCT01038453 | Unknown status | N/A | Effects of Vitamin D Supplement Before and During Pregnancy on Birth Weight | December 2009 | December 2011 |
NCT04476680 | Unknown status | N/A | Influence of Military Preventive Policy for reCruit Training on COVID-19 Seroconversion | September 1, 2020 | April 28, 2021 |
NCT03594214 | Unknown status | Prognostic Value of Vitamin D Levels in Egyptian Females With Breast Cancer | September 1, 2018 | September 1, 2021 | |
NCT05419973 | Unknown status | Vitamin D Levels in Umbilical Cord and It's Impact on Infant and Children's Health (VITADi Study) | May 15, 2022 | March 2023 | |
NCT03391245 | Unknown status | Vitamin D Level and Risk of Infections in Cirrhotic Patients | August 1, 2017 | February 15, 2018 | |
NCT02005302 | Unknown status | Phase 4 | Optimizing Treatment Programs for Chronic Kidney Disease-mineral and Bone Disorder and Malnutrition | January 2013 | December 2016 |
NCT03399357 | Unknown status | Evaluation of Metabolic Predictors of Influenza Vaccine Immune Response in the Singapore Elderly Population - the DYNAMIC Trial | May 31, 2017 | February 28, 2019 | |
NCT03602261 | Unknown status | Phase 2 | Safety, Efficacy, PK and PD of CTAP101 (Calcifediol) ER Capsules for SHPT in HD Patients VDI | July 9, 2018 | March 31, 2023 |
NCT03405207 | Unknown status | Phase 2 | Vitamin D Deficiency Treatment Outcomes After Non-ST-Segment Elevation Myocardial Infarction | May 1, 2018 | August 1, 2019 |
NCT02054975 | Unknown status | N/A | Vitamin D in Pediatric Asthma: a Randomized Controlled Open-label Pilot Trial | January 2014 | January 2016 |
NCT01153243 | Unknown status | Phase 4 | Vitamin D and Inflammatory Markers of Cardiovascular Disease in African Americans With Type 2 Diabetes | April 2007 | June 2011 |
NCT02087683 | Unknown status | N/A | Effect of Vitamin D Supplementation in Patients With Heart Failure and Vitamin D Deficiency | November 2014 | December 2018 |
NCT04778865 | Unknown status | N/A | Effect of Treatment for Vitamin D Deficiency on Thyroid Function and Autoimmunity in Hashimoto's Thyroiditis. | November 20, 2020 | December 2021 |
NCT00548379 | Unknown status | Phase 3 | Kabul Vitamin D Supplementation Trial | November 2007 | July 2009 |
NCT02243800 | Unknown status | Phase 3 | Study of the Efficacy and Safety of Cholecalciferol Supplementation on the Activity of Rheumatoid Arthritis in Patients With Vitamin D Deficiency | November 2011 | August 2016 |
NCT03053414 | Withdrawn | N/A | Vitamin D Repletion and Maintenance in IBD: How Much and How Often | February 20, 2017 | December 1, 2018 |
NCT02743559 | Withdrawn | N/A | Does Vitamin D Alter Bone's Response to Vibration? | May 19, 2016 | March 1, 2018 |
NCT03063190 | Withdrawn | Phase 4 | Cholecalciferol Supplementation in Restless Leg Syndrome in Patients With Chronic Kidney Disease | March 31, 2022 | March 2023 |
NCT01170507 | Withdrawn | Phase 1/Phase 2 | Magnitude of Changes in 25 OH Vitamin D3 Levels After Vitamin D3 Supplementation | December 2011 | August 2016 |
NCT02422784 | Withdrawn | Phase 1 | Effects of Vitamin D Fortification on Vitamin D Metabolite Profiles and Status in Vitamin D Insufficient Individuals | July 2016 | June 2018 |
NCT00279461 | Withdrawn | Phase 2 | Vitamin D Deficiency Causes Immune Dysfunction and Enables or Perpetuates the Development of Rheumatoid Arthritis | May 2009 | May 2011 |
NCT02174718 | Withdrawn | N/A | Evaluation of a Transdermal Vitamin D3 Delivery System, D3forME | November 2015 | November 2017 |
NCT00948740 | Withdrawn | Phase 2/Phase 3 | The Effect of Vitamin D on Urinary Calcium Excretion in Kidney Stone Formers With High Urinary Calcium | August 2009 | June 2010 |
NCT02138591 | Withdrawn | Phase 3 | Therapeutic Benefit of Preoperative Supplemental Vitamin D in Patients Undergoing Major Surgical Procedures. | February 2016 | May 2016 |
NCT00762918 | Withdrawn | Phase 3 | Vitamin D3 for the Treatment of Low Vitamin D in Cystic Fibrosis | March 2008 | September 2008 |
NCT01107808 | Withdrawn | N/A | Calcium, Vitamin D and Metformin to Treat Insulin Resistance in Obese African American Adolescent Females | June 2009 | March 2011 |
NCT01633658 | Withdrawn | N/A | The Variability of 25-hydroxyvitamin D Response From Crystalline 25-hydroxyvitamin D3 | November 2012 | November 2013 |
NCT05650268 | Withdrawn | N/A | Effects of Stoss Therapy of Vitamin D3 on Peri-operative Outcomes in Patients Receiving General Surgery | September 1, 2021 | April 30, 2022 |
NCT01026363 | Withdrawn | N/A | hCAP18 Levels and Vitamin D Deficiency in Chronic Kidney Disease | December 2009 | December 2014 |
NCT03019120 | Withdrawn | Phase 2 | Vitamin D Supplementation and Neurocognition | January 15, 2017 | February 24, 2020 |
NCT00915317 | Withdrawn | Effect of Vitamin D Supplementation on Erythropoietin Dosage in Hemodialysis Patients Who Have Vitamin D Deficiency | October 2008 | March 2009 | |
NCT01329666 | Withdrawn | Phase 2/Phase 3 | Primary Hyperparathyroidism (PHPT): Early Effect of Vitamin D | May 2010 | January 2015 |
NCT04363840 | Withdrawn | Phase 2 | The LEAD COVID-19 Trial: Low-risk, Early Aspirin and Vitamin D to Reduce COVID-19 Hospitalizations | May 2020 | December 2020 |
NCT02209168 | Withdrawn | Differences in Ovarian Reserve Markers and Vitamin D Between Infertile Indian, Arabian and Caucasian Population | November 2015 | March 2019 | |
NCT00552630 | Withdrawn | Phase 2/Phase 3 | Penicillamine Chelation for Children With Lead Poisoning | September 2007 |
- HPO Human Phenotype ID (Human Phenotype Ontology)
- HP:0100512
- MedGen concept unique identifier (MedGen Concept name)
- C0042870
- MedGen unique identifier (MedGen Concept name)
- 12114
- ICD10 preferred id (Insert disease from ICD10)
- D0003801
- ICD10 class code (Insert disease from ICD10)
- E55
- MeSH unique ID (MeSH (Medical Subject Headings))
- D014808