| Efficacy of Intensive Cholecalciferol Monitoring and Supplementation on Serum vitD Levels in Pediatric Patients With CF (NCT05276960) | Hospital Infantil de Mexico Federico Gomez | 2022-06-22 |
| Calcitriol Supplementation in COVID-19 Patients (NCT05415254) | RenJi Hospital | 2022-06-12 |
| The Effect of Vitamin D3 Therapy in Post Menopausal Women and Assessment of Changes in Bone Mineral Density After Orally Vitamin D3 Administration (NCT05389943) | University of Sargodha | 2022-06-05 |
| The Effect Vitamin D on the Recovery Rate of Bell Palsy (NCT05997199) | Umraniye Education and Research Hospital | 2022-06-01 |
| Dietary Challenges in the Population of Nursing Homes' Residents (NCT05389618) | Institute of Nutrition, Slovenia (Nutris) | 2022-05-26 |
| Impact of COVID-19 Vaccination on Serum 25-hydroxyvitamin D Level (NCT05398939) | National Taiwan University Hospital | 2022-05-25 |
| The Genetic Effects on Vitamin D Supplementation (NCT05802433) | St. Mary's University, Twickenham | 2022-05-16 |
| Vitamin D Levels in Umbilical Cord and It's Impact on Infant and Children's Health (VITADi Study) (NCT05419973) | Hasanuddin University | 2022-05-15 |
| Cholecalciferol Supplementation in Hemodialysis Patients (NCT05922696) | Ain Shams University | 2022-05-15 |
| PREDIN: Pregnancy and Vitamin D Intervention Study (NCT05329428) | Göteborg University | 2022-04-14 |
| Cholecalciferol Supplementation in Restless Leg Syndrome in Patients With Chronic Kidney Disease (NCT03063190) | University of Sao Paulo General Hospital | 2022-03-31 |
| Study to Document the Phenomenon of Vitamin D Deficiency and Its Added Value in Patients with Low-energy Osteoporotic Hip Fracture, in Daily Practice in Greece. (NCT06643650) | National and Kapodistrian University of Athens | 2022-03-11 |
| 25-Hydroxyvitamin D Levels in Patients With Periodontitis (Stage III) (NCT05343273) | Ataturk University | 2022-03-10 |
| Evaluating the Effect of SOLIUS UV Light Source in Improving Vitamin D Status (NCT04780776) | Boston University | 2022-02-23 |
| GraviD-child Follow-up of the Children´s Health, Growth and Development Within the GraviD-study (NCT05228925) | Göteborg University | 2022-02-01 |
| FREQUENCY OF VITAMIN D DEFICIENCY IN PREMATURE NEWBORN BORN BEFORE 32 WEEKS AND/OR WITH A BIRTH WEIGHT UNDER 1500g (NCT06315452) | Fondation Hôpital Saint-Joseph | 2022-02-01 |
| Magnesium and Vitamin D Combination for Post-COVID Syndrome (NCT05630339) | Coordinación de Investigación en Salud, Mexico | 2022-01-30 |
| Vitamin-D Insufficiency and Implants (NCT06452251) | Vesile Elif Toy | 2022-01-01 |
| Investigating the Relationship Between Temporal Bone CT, Bone Density, and Hearing Loss in Otosclerosis Patients (NCT06830187) | İbrahim Emir Yeşil | 2022-01-01 |
| Comparıson Of Electromyography Results Before And After Vıtamın D Treatment In Patıents Wıth Carpal Tunnel Syndrome (NCT06282640) | Dr. Ayşe Güç | 2021-12-30 |
| Vitamin D Supplementation and Clinical Outcomes in Severe COVID-19 Patients (NCT05384574) | University Hospital of Split | 2021-11-22 |
| Vitamin D Supplementation and Improvement of PCOS Therapy and IVF Outcomes in Infertile Saudi Women (NCT05106712) | Umm Al-Qura University | 2021-11-01 |
| Prevalence of Vitamin D Deficiency in Pregnant Women and Their Fetus in North Jordan (NCT04944212) | Jordan University of Science and Technology | 2021-10-31 |
| Impact of Vitamin D Supplementation on the Rate of Pathologic Complete Response in Vitamin D Deficient Patients (NCT04677816) | Wake Forest University Health Sciences | 2021-10-22 |
| Vitamin D3 Supplementation for Vitamin D Deficiency in Rotator Cuff Repair Surgery (NCT05009498) | Community Memorial Health System | 2021-09-01 |
| Effects of Stoss Therapy of Vitamin D3 on Peri-operative Outcomes in Patients Receiving General Surgery (NCT05650268) | National Taiwan University Hospital | 2021-09-01 |
| Supplementation and Depressive Symptomatology Incidence Among Saudi Arabian Adults (NCT05916053) | Lebanese American University | 2021-09-01 |
| Solius UV Light Source in Improving Serum Levels of 25-hydroxyvitamin D (NCT04865432) | Boston University | 2021-08-24 |
| Effect of Vitamin D Oral Supplementation in Poly Csytic Ovarian Women Resistant to Clomiphene Citrate (NCT04916925) | rana alaaeldin aly ibrahim nasr | 2021-08-21 |
| COVID-19 and Vitamin D: Length of Hospital Stay and Mortality (NCT05221983) | Yuksek Ihtisas University | 2021-08-21 |
| Vitamin D Level and Pain Type in Coccygodynia (NCT05047393) | Cumhuriyet University | 2021-08-01 |
| Nutrition, Immunity, and Covid-19 in Obese People (NCT04979065) | Indonesia University | 2021-07-24 |
| Vitamin D Supplementation in Estonian Conscripts (NCT04939636) | Tartu University Hospital | 2021-07-19 |
| Effect of Vitamin D Supplement on Disease Activity in SLE (NCT05260255) | Department of Medical Services Ministry of Public Health of Thailand | 2021-06-15 |
| Vitamin D Replacement Using Oral Thin Film (OTF) Cholecalciferol in Patients Undergoing Hematopoietic Stem Cell Transplantation (NCT04818957) | Children's Hospital Medical Center, Cincinnati | 2021-06-07 |
| Prevention of Postoperative Hypocalcemia of Oral Vitamin D Supplementation Before Total Thyroidectomy (NCT05216419) | Seoul National University Hospital | 2021-06-07 |
| Vitamin D Levels in Non-immediate Drug Hypersensitivity Case-control Study (NCT06263140) | Chulalongkorn University | 2021-05-30 |
| Vitamin D Supplementation in Individuals With a Chronic Spinal Cord Injury (NCT04652544) | Swiss Paraplegic Research, Nottwil | 2021-05-19 |
| Mothers' Own Milk Optimization for Preterm Infants Project (MoMO PIP) Pilot Study (NCT04629534) | Medical University of South Carolina | 2021-05-06 |
| Effect of Single High Dose of Cholecalciferol on Serum Metabolites of Vitamin D (NCT05591170) | Department of Endocrinology, Centre of Postgraduate Medical Education | 2021-04-01 |
| The Effect of Vitamin D3 Therapy on Vitamin D Status in Pregnant Women With Vitamin D Deficient and Insufficient (NCT06054919) | Indonesia University | 2021-04-01 |
| Vitamin D Absorbance Study - Clinical Trial of the Absorbance of Nano Liquid D3 (NCT04885803) | Inspired Life Medical, Inc. | 2021-03-26 |
| Vitamin D Deficiency as Independent Predictor for Plaque Vulnerability (NCT06473337) | Medical University of Vienna | 2021-03-01 |
| Effects of High Intensity Statin Therapy on Steroid Hormones and Vitamin D in Type 2 Diabetic Men (NCT05806723) | Hopital La Rabta | 2021-03-01 |
| Retinal Changes in Vitamin D Deficiency (NCT04891211) | Adiyaman University | 2021-02-12 |
| Vitamin D Status in Children With Sickle Cell Disease Living in Lyon, France (NCT04694976) | Hospices Civils de Lyon | 2021-02-04 |
| The Effects of a Sublingual Sprayable Microemulsion of Vitamin D on Inflammatory Markers in COVID-19 Patients (NCT05502068) | Pauls Stradins Clinical University Hospital | 2021-02-01 |
| Effect of Exercise Intensity on Vitamin D (NCT05024110) | Taif University | 2021-01-25 |
| Effect of Vitamin D Deficiency on the Structure of Titanium Platelet-Rich Fibrin (NCT06870786) | Abant Izzet Baysal University | 2021-01-21 |
| Vitamin D and Serum Calcium Level Insufficiency and Early Dental Implant Failure (NCT04906161) | Ain Shams University | 2021-01-20 |
| Vitamin D Deficiency and Body Composition in the Patients With Hemophilia (NCT05517070) | Tsung-Ying Li | 2021-01-01 |
| Comorbidity-Based Propranolol Use in Pediatric Migraine (NCT07103031) | Kayseri University | 2021-01-01 |
| Study on Clinical Value of Vitamin D in Recurrent Spontaneous Abortion (NCT06002035) | Jianmei Xia | 2021-01-01 |
| Effects of Vitamin D Supplementation on Depression and Inflammatory Markers (NCT04898725) | Mackay Memorial Hospital | 2020-12-25 |
| Efficacy and Safety of Calcifediol vs Placebo in Subjects With Vitamin D Deficiency (NCT04735926) | Faes Farma, S.A. | 2020-12-23 |
| High Dose Vitamin-D Substitution in Patients With COVID-19: a Randomized Controlled, Multi Center Study (NCT04525820) | Prof. Dr. Jörg Leuppi | 2020-12-15 |
| Clinical Outcomes of High Dose Vitamin D Versus Standard Dose in COVID-19 Egyptian Patients (NCT04738760) | Ain Shams University | 2020-12-01 |
| Vitamin D Status and Bone Metabolism Status in Children With Congenital Epidermolysis Bullosa (NCT05141838) | National Medical Research Center for Children's Health, Russian Federation | 2020-11-21 |
| Effect of Treatment for Vitamin D Deficiency on Thyroid Function and Autoimmunity in Hashimoto's Thyroiditis. (NCT04778865) | Universidad de Valparaiso | 2020-11-20 |
| High Dose Interval Vitamin D Supplementation in Patients With Inflammatory Bowel Disease Receiving Biologic Therapy (NCT04331639) | Boston Children's Hospital | 2020-11-01 |
| Baseline Vitamin D Deficiency and COVID-19 Disease Severity (NCT04628000) | Parkview Medical Center | 2020-10-27 |
| Effect of Exercise on Vitamin d in Obese (NCT05066490) | Taif University | 2020-10-06 |
| Exploring the Effects of Caltrate Supplement on the Chronic Course of Crohn's Disease Patients With Vitamin D Deficiency (NCT04276636) | Second Affiliated Hospital of Wenzhou Medical University | 2020-10-01 |
| Exploring the Effects of Vitamin D Supplementation on the Chronic Course of Patients With Crohn's Disease With Vitamin D Deficiency (NCT04308850) | Second Affiliated Hospital of Wenzhou Medical University | 2020-10-01 |
| Daily Vitamin D for Sickle-cell Respiratory Complications (NCT04170348) | Columbia University | 2020-09-15 |
| Vitamin D Status Among Infertile Women in Sweden (NCT05848349) | Vastra Gotaland Region | 2020-09-01 |
| Replenishing and Maintaining Vitamin D Status in Older Adults in Residential Care Facilities in NI (NCT04395638) | University of Ulster | 2020-09-01 |
| Efficacy of Oral Vitamin D Supplementation in Adolescents and Young Adults. (NCT04377386) | Fundación Cardiovascular de Colombia | 2020-08-03 |
| Vitamin D Supplementation in the Prevention and Mitigation of COVID-19 Infection (NCT04482673) | Medical University of South Carolina | 2020-07-31 |
| Does Supplementing Vitamin D Deficiency Affect Fusion Healing Rates in Elective Foot and Ankle Surgery? (NCT04450199) | Allegheny Singer Research Institute (also known as Allegheny Health Network Research Institute) | 2020-07-24 |
| The Relationship Between Vitamin D Levels, Inflammatory Parameters and Disease Severity of COVID-19 Infection (NCT04945577) | Fatih Sultan Mehmet Training and Research Hospital | 2020-07-01 |
| The Effect of Preoperative Oral Dexamethasone Supplementation on the Outcome of Thyroidectomised Patients. (NCT04412694) | Medical University of Lodz | 2020-07-01 |
| Vitamin D in Pregnancy (NCT04291313) | University of Aarhus | 2020-06-08 |
| Investigating the Role of Vitamin D in the Morbidity of COVID-19 Patients (NCT04386044) | Tameside General Hospital | 2020-06-01 |
| Vitamin D Testing and Treatment for COVID 19 (NCT04407286) | Arizona State University | 2020-05-19 |
| Vitamin D Levels and Postoperative Pain in Laparoscopic Cholecystectomy (NCT04687527) | Bozok University | 2020-05-15 |
| Vitamin D Levels in SARS-CoV-2: Do Current Adequacy Thresholds Reflect Clinical Risk? Insights From a Large Turkish Cohort (NCT04394390) | Bursa City Hospital | 2020-05-01 |
| The LEAD COVID-19 Trial: Low-risk, Early Aspirin and Vitamin D to Reduce COVID-19 Hospitalizations (NCT04363840) | Louisiana State University Health Sciences Center in New Orleans | 2020-05-01 |
| Evaluation of the Relationship Between Zinc Vitamin D and b12 Levels in the Covid-19 Positive Pregnant Women (NCT04407572) | Kanuni Sultan Suleyman Training and Research Hospital | 2020-04-20 |
| Effects of Enteral Supplement Vitamin D Incritically Ill Patients (NCT04292873) | National Taiwan University Hospital | 2020-03-16 |
| The Effects of Vitamin D3 Alone and in a Combination With Omega-3 on the Association of C-peptide With Glycemic Control (NCT04307784) | Applied Science Private University | 2020-03-10 |
| 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 (NCT04309058) | Second Affiliated Hospital of Wenzhou Medical University | 2020-03-01 |
| ETOL-Elderly Study of the Efficiency of the Innovative Food Supplement in Elderly Adults (NCT05661006) | Institute of Nutrition, Slovenia (Nutris) | 2020-02-20 |
| Vitamin D and Health Status of British African-Caribbean Women (NCT04179370) | University of Surrey | 2020-02-07 |
| Vitamin D Enriched Meat Project (Acute Study) (NCT04207294) | University of Ulster | 2020-01-16 |
| Development of a Screening Tool for the Risk of Vitamin D Deficiency (NCT04404842) | University of Pavia | 2020-01-14 |
| Effect of Aerobic Interval Training With Vitamin D Supplement on Functional Capacity and Perceived Myalgia (NCT04319289) | Cairo University | 2020-01-12 |
| Effect of Vitamin D Supplementation on Vedolizumab Response in Patients With Ulcerative Colitis (NCT05649462) | Second Affiliated Hospital of Wenzhou Medical University | 2020-01-01 |
| the Effect of Vitamin D in Crohn's Disease (NCT04134065) | Nanjing University School of Medicine | 2019-12-01 |
| Vitamin D Deficit in Women With Uterine Fibroids (NCT04030182) | Instituto Mexicano del Seguro Social | 2019-12-01 |
| Bone Health and Vitamin D Status (NCT01634607) | Thai Red Cross AIDS Research Centre | 2019-12-01 |
| Vitamin D in School Children (NCT05018988) | University of Ulster | 2019-11-01 |
| 12 Weeks Vitamin D Supplementation and Physical Activity in PD Patients With DBS (NCT04768023) | Medical University of Gdansk | 2019-11-01 |
| Effect of Vitamin d and Omega 3 on Osteocalcin (NCT04005612) | Applied Science Private University | 2019-11-01 |
| A Study to Investigate the Effect of Vitamin D3 Supplementation on Asthma Symptoms in Adults With Asthma (VITDAS) (NCT04117581) | University of Chester | 2019-10-28 |
| Vitamin D 24'000 IU for Oral Intermittent Supplementation (NCT03920150) | University Hospital, Basel, Switzerland | 2019-09-30 |
| Can Vitamin D Supplementation in People With Crohn's Disease Improve Symptoms as an Adjunct Therapy? (NCT03718182) | University Hospital Birmingham NHS Foundation Trust | 2019-09-17 |
| Effect of Vitamin D Supplementation on Improvement of Pneumonic Children (NCT04244474) | Cairo University | 2019-09-09 |
| Effect of Vitamin D Status and Repletion on Postoperative Total Joint Arthroplasty Complications (NCT04229368) | Brigham and Women's Hospital | 2019-09-01 |
| The Combined Effect of Omega-3 Fatty Acid and Vitamin D3 on Lipid Profile Levels and Oxidized Low Density Lipoprotein (NCT04005573) | Applied Science Private University | 2019-07-10 |