Mode
Home
Research
Clinical Trials Drug Pipeline Weekly Digests
Reference
Conditions Medications
Community
Questions
Text Size
Log in / Sign up
Home › Medications › Vitamin D

Vitamin D

16 published articles · Updated continuously

Clinical Trial Landscape

Clinical Trials of Vitamin D

26 trials tracked of Vitamin D: 14 in phase 3 or 4 and 4 with published results. The most-cited published study has 579 citations.

26Trials tracked
14Phase 3 & 4
0Recruiting
4With published results
Phase distribution
Phase 4 8 Phase 3 6 Phase 2 6 Phase 1 2 Other / NA 4
  1. Phase 4 VERtebral Fracture Treatment Comparisons in Osteoporotic Women Completed · 579 cited
  2. Phase 3 Vitamin D Supplementation in Cutaneous Malignant Melanoma Outcome Completed · 39 cited
  3. Phase 4 Teriparatide for Joint Erosions in Rheumatoid Arthritis: The TERA Trial Completed · 37 cited
  4. Phase 4 Effect of Vitamin D as Adjuvant Therapy in Preterm Infants With Neonatal Sepsis Completed
  5. Phase 4 Can Vitamin D Reduce Heart Muscle Damage After Bypass Surgery? Completed
  6. Phase 4 Evaluating Vitamin D3 Supplement on Post-Op Outcomes Completed
Show 20 more trials
  1. Phase 4 Effects of Teriparatide or Denosumab on Bone in Postmenopausal Women With Osteoporosis Completed
  2. Phase 4 20070360 Incident Dialysis Completed
  3. Phase 4 Does Treatment of Hypovitaminosis D Increase Calcium Absorption? Completed
  4. Phase 3 Effect of Vitamin D Supplementation on Exercise Adaptations in Patients on Statin Therapy Completed
  5. Phase 3 Prevalence of Vitamin D Deficiency in Type 1 Diabetes Mellitus and Effect of Supplementation on Insulin Requirements Completed
  6. Phase 3 The Effects of Vitamin D Repletion in Vitamin D Deficient Patients With Stage 3 and 4 Chronic Kidney Disease Completed
  7. Phase 3 Effects of Electrical Stimulation and Vitamin D Supplementation on Bone Health Following Spinal Cord Injury. Completed
  8. Phase 3 Effect of Zoledronic Acid on Chemotherapy Induced Bone Loss Completed
  9. Phase 2 Effect of Vitamin D Repletion on Insulin Resistance and Systemic Inflammation Completed
  10. Phase 2 Study of Vitamin D and Effect on Heart Disease and Insulin Resistance Completed
  11. Phase 2 High Dose Vitamin D for Sickle Cell Disease Completed
  12. Phase 2 Injections of Glutamic Acid Decarboxylase (GAD) for LADA Type of Diabetes Completed
  13. Phase 2 Development of Vitamin D as a Therapy for Breast Cancer - Phase 2 Completed
  14. Phase 2 EDCR Study - Etanercept Diamyd Combination Regimen -Open Trial to Evaluate Safety in Children With Type 1 Diabetes Completed
  15. Phase 1 GAD-Alum (Diamyd) Administered Into Lymph Nodes in Combination With Vitamin D in Type 1 Diabetes (DIAGNODE-1) Completed
  16. Phase 1 Vitamin D for Chemoprevention Completed
  17. N/A Effect of Vitamin D3 on Vascular Function Completed
  18. N/A Vitamin D in Minorities With Prediabetes Completed
  19. N/A Efficacy and Safety of Blue Light (453 nm) Treatment for Mild Psoriasis Vulgaris Over Three Months Compared to Vitamin D. Completed
  20. N/A Effect of Vitamin D on the Honeymoon Period in Children and Adolescents With Type 1 Diabetes Completed

Showing the 26 most-cited and recently-updated of 26 trials. Browse the full registry →

Trial data sourced from ClinicalTrials.gov. Counts describe the research landscape and are not a treatment recommendation. Informational only — not medical advice.

HCP Mode — summaries include clinical detail, trial data, and statistical outcomes.
Patient Mode — summaries use plain language, avoiding clinical jargon.
Vitamin D supplementation associated with improved metabolic markers in patients with Metabolic-Associated Fatty Liver Disease
Gastroenterology Meta-analysis
Vitamin D supplementation associated with improved metabolic markers in patients with Metabolic-Associated Fatty Liver Disease A Simple Vitamin May Help Your Body Manage a Fatty Liver
This systematic review and meta-analysis evaluated 21 studies involving patients with Metabolic-Associated Fatty Liver Disease (MAFLD) recei…
Vitamin D supplements improved blood sugar, cholesterol, and liver health in people with fatty liver disease, offering a simple add-on to he…
Apr 12, 2026
Systematic review links neutrophil extracellular trap dysregulation to pregnancy complications
Diabetes & Endocrinology Sys. Review
Systematic review links neutrophil extracellular trap dysregulation to pregnancy complications Web of White Blood Cells Linked to Pregnancy Risks
A systematic review of emerging evidence indicates that dysregulation of neutrophil extracellular trap (NET) formation and clearance is stro…
A sticky web of white blood cells meant to fight germs can instead trigger serious pregnancy risks like preeclampsia and preterm birth when …
Frontiers Apr 12, 2026
Daily Vitamin D increased HDAC2 and 25(OH)D levels in stable COPD patients without improving pulmonary function
Pulmonology & Critical Care
Daily Vitamin D increased HDAC2 and 25(OH)D levels in stable COPD patients without improving pulmonary function Vitamin D supplement increased a protein marker in five COPD patients
This experimental study evaluated the effect of daily 5000 IU Vitamin D in five stable COPD patients over three months.
Daily Vitamin D supplements raised a protein marker in five COPD patients, but the study found no significant improvement in lung function a…
medRxiv Apr 9, 2026
Network meta-analysis shows oral vitamin D combination therapies improve serum levels in children with nutritional rickets compared to monotherapy
Nutrition & Obesity Medicine Meta-analysis
Network meta-analysis shows oral vitamin D combination therapies improve serum levels in children with nutritional rickets compared to monotherapy For children with rickets, do vitamin D mixtures work better than single supplements?
This network meta-analysis of 10 randomized controlled trials involving 867 children evaluated oral vitamin D–based combination therapies ve…
Mixing vitamin D forms works better than single supplements for treating soft bones in children, with no extra safety risks and greater bene…
Frontiers Apr 8, 2026