SupplementDrug
Vitamin D clinical trials
Also written Calciferol.
- studies test it
- 520
- open now
- 50
- in phase 3
- 69
- first study started
- 1999
Keep track of what changes. Save the Vitamin D studies recruiting or about to start, and get an email each week — studies that open, close, add sites or post results.
Watch these studiesHow studies write it
Studies that test it under each name
Other names
Studies by the year they started
516 studies that test it; most in 2010 (40)
| Year | Studies |
|---|---|
| 1999 | 1 |
| 2000 | 1 |
| 2001 | 1 |
| 2002 | 3 |
| 2003 | 1 |
| 2004 | 1 |
| 2005 | 9 |
| 2006 | 7 |
| 2007 | 14 |
| 2008 | 10 |
| 2009 | 29 |
| 2010 | 40 |
| 2011 | 28 |
| 2012 | 30 |
| 2013 | 35 |
| 2014 | 27 |
| 2015 | 23 |
| 2016 | 28 |
| 2017 | 27 |
| 2018 | 24 |
| 2019 | 24 |
| 2020 | 34 |
| 2021 | 28 |
| 2022 | 21 |
| 2023 | 21 |
| 2024 | 21 |
| 2025 | 17 |
| 2026 | 11 |
By phase
A phase 1/2 study counts in both.
- Early Phase 1
- 18
- Phase 1
- 42
- Phase 2
- 83
- Phase 3
- 69
- Phase 4
- 88
- No phase
- 246
What it is tested for
Each study’s main condition, where its own words name it.
- COVID-19
- 16
Who runs them
Industry 16 · Other 504
Assiut University (9) · Ain Shams University (8) · Brigham and Women's Hospital (8) · Wake Forest University Health Sciences (7) · Tanta University (6) · University of Wisconsin, Madison (6) · Cairo University (6) · Post Graduate Institute of Medical Education and Research, Chandigarh (4)
Often tested with
Tested in the same studies.
Calcium (34) · Omega-3 fatty acid (7) · Cholecalciferol (5) · Aspirin (4) · Fish Oils (4) · Retogatein (4) · Alendronate (4) · Ibandronic Acid (3)
Studies
Open first, then newest update. How each study uses Vitamin D is read from its arms, and is right about nine times in ten.
Testing it · 520
- Impact of Vitamin D Supplements on Mental Health and Milk Composition in Mothers Living in IdahoRecruitingNot applicableUniversity of IdahoNCT06919718Written as Vitamin D (Cholecalciferol )
- Maternal Stress on Human Milk and Infant OutcomesRecruitingNot applicableUniversity of IdahoNCT04821544Written as Vitamin D
- Vonoprazan vs Proton Pump Inhibitor With Vitamin D or Probiotics Based Triple Therapy for Eradication of Helicobacter Pylori InfectionRecruitingPhase 2Tanta UniversityNCT07293910Written as Vitamin D
- Vitamin D in Diabetic NeuropathyNot yet recruitingPhase 2/3Tanta UniversityNCT07644520Written as Vitamin D
- Evaluation of the Clinical and Psychological Impact of Vitamin D Replacement in Adolescent Females at Risk for Polycystic Ovarian Syndrome (PCOS)RecruitingNot applicableYale UniversityNCT04355572Written as Vitamin D 4000IU daily
- Vitamin D and Type 2 Diabetes - Treat-To-TargetRecruitingPhase 3Tufts Medical CenterNCT07448974Written as Vitamin D (Cholecalciferol )
- Vitamin D Effects on Immune Microenvironment of Nonmelanoma Skin Cancer After Photodynamic Therapy (PDT)RecruitingNot applicableCase Comprehensive Cancer CenterNCT07241585Written as Vitamin D (VitD)
- Effect of Systemic Vitamin D on Dental Implant OsseointegrationRecruitingNot applicableFuture University in EgyptNCT07684404Written as Vit D
- FATIMA Trial: EGCG and Vitamin D3 for Prevention of Fibroid RecurrenceRecruitingPhase 2Sheikh Shakhbout Medical CityNCT07647198Written as Vitamin D and Green Tea
- Effects of High-Dose Vitamin D on Hormones, Neuromuscular Function, Cognition, and Body Composition in AthletesRecruitingNot applicableThe Jerzy Kukuczka Academy of Physical Education in KatowiceNCT07641075Written as Vitamin D supplementation
- Vitamin D for Acute Intracerebral HemorrhageRecruitingNot applicableThe University of Hong KongNCT07458815Written as Vitamin D
- Regime for Vitamin D Maintenance in Post-Operative PatientsRecruitingPhase 3Sengkang General HospitalNCT06708741Written as Vitamin D
- Statin and Vitamin D Treatment in Patients With Thyroid Eye DiseaseRecruitingNot applicableTaipei Veterans General Hospital, TaiwanNCT07400757Written as Vitamin D
- New Treatment of Common WartNot yet recruitingNot applicableSohag UniversityNCT07543926Written as Vitamin D
- Precision Medicine and Physical FunctionRecruitingNot applicableUniversity of North Carolina, Chapel HillNCT05877846Written as Vitamin D supplement
- Vitamin D, Epigallocatechin Gallate, D-chiro-inositol and Vitamin B6 in Uterine FibroidRecruitingNot applicableLo.Li.Pharma s.r.lNCT05448365Written as Epigallocatechin gallate, Vitamin D, Vitamin B6, D-chiro-inositol
- Combined Microneedling With Either 1% Lactic Acid Solution or Vitamin D3 or Triamcinolone Acetonide in The Treatment of Alopecia AreataRecruitingNot applicableZagazig UniversityNCT06327581Written as vit D
- Vitamin D for Prostate Endocrine TherapyRecruitingPhase 3University of RochesterNCT05838716Written as D Vitamin
- Effect of Vitamin D and Branched-chain Amino Acids on Physical Performance and Biomarkers of Muscle Fatigue in RunnersNot yet recruitingNot applicablePedro Julian Flores MorenoNCT07334054Written as Vitamin D
- Effects of Vitamin D in Patients Undergoing Fixed Orthodontic MechanotherapyNot yet recruitingNot applicableHospital Universiti Sains MalaysiaNCT07299552Written as Vitamin D (Calcitriol)
See all 520 studies that test Vitamin D →
Given in every arm · 74 — Vitamin D is usual care beside what is tested
- Assessing the Role of Proton Pump Inhibitors in Reducing Aspiration Incidence in Pediatric Laryngomalacia CasesRecruitingNot applicableMinia UniversityNCT07750379Written as vitamin D
- Effect of Tirzepatide and Bimagrumab on Body Composition, Insulin Sensitivity, and Bone in Adults With ObesityRecruitingPhase 2Massachusetts General HospitalNCT05933499Written as Calcium/Vitamin D
- Prunes Preventing Bone Loss in PerimenopauseRecruitingNot applicablePenn State UniversityNCT07120997Written as Vitamin D Supplement
- Frailty RehabilitationRecruitingNot applicableMcMaster UniversityNCT03824106Written as Vitamin D
- Resistive Exercise Versus HIIT on Calcium and Vitamin DEnrolling by invitationNot applicableCairo UniversityNCT05795504Written as calcium and vitamin D
- Dried Plums and Bone Health in Postmenopausal WomenActive, not recruitingNot applicablePenn State UniversityNCT02822378Written as Vitamin D supplement
- Statin Monotherapy for Treatment of Endocrine Metabolic Disease RiskTerminatedPhase 2Dr. B. Catharine. CravenNCT03113994Written as Vitamin D
- Romosozumab Use to Build Skeletal IntegrityActive, not recruitingPhase 4Susan L. GreenspanNCT05058976Written as Calcium and Vitamin D
- Effects of Electrical Stimulation and Vitamin D Supplementation on Bone Health Following Spinal Cord Injury.CompletedPhase 2/3VA Office of Research and DevelopmentNCT05008484Written as Vitamin D
- A Study of Hydroxychloroquine, Vitamin C, Vitamin D, and Zinc for the Prevention of COVID-19 InfectionCompletedPhase 2ProgenaBiomeNCT04335084Written as Vitamin D
- Sarcopenia in Patients With Heart FailureActive, not recruitingNot applicableMaimónides Biomedical Research Institute of CórdobaNCT06634316Written as Vitamin D supplementation
- A Study to Compare Efficacy, PK, PD, Safety and IMM of MB09 to Prolia® [EU-sourced] in Postmenopausal Osteoporosis.CompletedPhase 3mAbxience Research S.L.NCT05338086Written as Vitamin D
- The Effect of Teriparatide on Bone Union in Unstable Intertrochanteric Fracture Patients Treated With PFNACompletedPhase 3King Chulalongkorn Memorial HospitalNCT03133195Written as Vitamin D
- Progressive Resisted Exercise Plus Aerobic Exercise on Osteoporotic Systemic Lupus ErythmatosusCompletedNot applicableCairo UniversityNCT05392790Written as Calcium and Vit D
- Preventing Osteoporosis Using DenosumabCompletedPhase 4Susan L. GreenspanNCT02753283Written as Calcium and Vitamin D
- A Study to Evaluate and Compare Alendronate and Risedronate on Bone Mineral Density in Women With Postmenopausal Osteoporosis (MK-0217-211)CompletedPhase 3Organon and CoNCT00092014Written as Vitamin D
- Study to Evaluate Romosozumab in Children and Adolescents With Osteogenesis ImperfectaCompletedPhase 1AmgenNCT04545554Written as Vitamin D
- A Study of Quintuple Therapy to Treat COVID-19 InfectionCompletedPhase 2ProgenaBiomeNCT04334512Written as Vitamin D
- Prevention of Bone Loss After Pediatric Hematopoietic Cell TransplantationCompletedPhase 2Masonic Cancer Center, University of MinnesotaNCT02074631Written as Calcium and vitamin D
- Impact of Ultraviolet Radiation on Bone Density and Muscle Strength in Postmenopausal WomenCompletedNot applicableCairo UniversityNCT05650437Written as Vitamin D supplementation
Showing 20 of 74.
As the comparator · 16 — what is tested is compared with Vitamin D
- Pediatric Safety Follow-up Study of Prior Treatment With Romosozumab for Osteogenesis ImperfectaRecruitingPhase 3AmgenNCT07366086Written as Vitamin D
- Safety and Efficacy of Urtica Dioica Cataplasm in the Management of Osgood-Schlatter Disease in Young AthletesNot yet recruitingNot applicableFaculty of Medicine, SousseNCT07096037Written as Vitamin D
- Zoledronate, Vitamin D, and Calcium With or Without Strontium 89 or Samarium 153 in Preventing or Delaying Bone Problems in Patients With Bone Metastases From Prostate Cancer, Lung Cancer, or Breast CancerCompletedPhase 3Radiation Therapy Oncology GroupNCT00365105Written as Vitamin D
- Comparing a Novel Phototherapy Kiosk to Oral Vitamin D SupplementationCompletedNot applicableMadigan Army Medical CenterNCT04556136Written as D3 Oral supplement
- Outcome of High Dose Vitamin D on Prognosis of Sepsis Requiring Mechanical VentilationCompletedPhase 4Ain Shams UniversityNCT05244018Written as Vitamin D tablets
- Vitamin D to Improve Nutrition Prior to Bariatric Surgery and Investigate the Relationship With Negative OutcomesTerminatedNot applicableJohns Hopkins UniversityNCT02212652Written as Vitamin D
- 20070360 Incident DialysisCompletedPhase 4AmgenNCT00803712Written as Vitamin D
- Zometa Study in Pediatric Acute Lymphoblastic LeukemiaCompletedPhase 3Children's Cancer Hospital Egypt 57357NCT01656512Written as calcium & vitamin D
- Effect of Vitamin D Supplementation on Exercise Adaptations in Patients on Statin TherapyCompletedPhase 3Post Graduate Institute of Medical Education and Research, ChandigarhNCT02030041Written as Vitamin D
- Effect of Periodontitis on Bone Mineral Density in Postmenopausal WomenCompletedNot applicablePostgraduate Institute of Dental Sciences RohtakNCT02628197Written as calcium (500mg) and vitamin D (250I.U.)
- Creatine or Vitamin D Supplementation in Persons With Spinal Cord Injury Undergoing Resistance TrainingCompletedNot applicableUniversidade do PortoNCT02099357Written as Vitamin D
- Effect of a Monthly High Dose of Vitamin D3 on Bariatric Surgery PatientsCompletedPhase 1Texas Tech UniversityNCT02477956Written as vitamin D
- Safety and Efficacy of OSTEOFORM (rhPTH [1-34]) in Increasing Bone Mineral Density in OsteoporosisCompletedPhase 3Virchow GroupNCT00500409Written as SHELCAL
- Daily Vitamin D Supplementation Compared to a Loading Dose and Monthly Supplementation in Elderly Nursing Home ResidentsCompletedPhase 3Rijnstate HospitalNCT01168544Written as Vitamin D 800 IU /day
- Does Vitamin D Improves Sustained Virologic Response (SVR) in Genotype 2,3 Chronic Hepatitis C Patients?Status unknownNot applicableZiv HospitalNCT01146626Written as Peg+ Vitamin D+ Ribavirine
- The Beneficial Effect of Vitamin D Supplement to Peg Interferon Alpha 2a or to Telbivudine Monotherapy in Patients With Chronic Hepatitis B Virus (HBV) InfectionStatus unknownNot applicableZiv HospitalNCT01083251Written as entecavir+ vitamin d
Codes
What other systems call Vitamin D · ClinicalTrials.gg INT008415
- MeSH (NLM) D014807Vitamin DConfirmed ClinicalTrials.gov, Wikidata
- UNII (FDA) 9VU1KI44GPVITAMIN DConfirmed FDA, Wikidata
- RxNorm 11253One source FDA
- Wikidata Q175621vitamin DConfirmed FDA, Wikidata
- DrugBank DB11094One source Wikidata
| System | Code | Name there | Checked by |
|---|---|---|---|
| MeSH (NLM) | D014807 | Vitamin D | Confirmed ClinicalTrials.gov, Wikidata |
| UNII (FDA) | 9VU1KI44GP | VITAMIN D | Confirmed FDA, Wikidata |
| RxNorm | 11253 | — | One source FDA |
| Wikidata | Q175621 | vitamin D | Confirmed FDA, Wikidata |
| DrugBank | DB11094 | — | One source Wikidata |
“Confirmed” means two independent publishers link the code to this drug; “one source”, one does and its name agrees.