Clinical trials
Phase 4 Vitamin D Deficiency trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
21 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2005 | 1 |
| 2006 | 1 |
| 2008 | 1 |
| 2009 | 3 |
| 2010 | 2 |
| 2011 | 3 |
| 2012 | 2 |
| 2013 | 1 |
| 2015 | 1 |
| 2017 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 1 |
| 2025 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 13 |
| Terminated | 6 |
| Active, not recruiting | 2 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Medical University of South Carolina | 2 |
| University of Wisconsin, Madison | 2 |
| Albany College of Pharmacy and Health Sciences | 1 |
| Columbia University | 1 |
| Emory University | 1 |
| Joslin Diabetes Center | 1 |
| Maimonides Medical Center | 1 |
| Mayo Clinic | 1 |
| Montefiore Medical Center | 1 |
| New York Presbyterian Hospital | 1 |
Top conditions
MeSH conditions the trials were registered with, not their broader categories. A condition with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Vitamin D Deficiency | 21 |
| Bone Diseases, Metabolic | 2 |
| Hyperparathyroidism, Secondary | 2 |
| Obesity | 2 |
| Renal Insufficiency, Chronic | 2 |
| Anemia, Aplastic | 1 |
| Anxiety Disorders | 1 |
| Burns | 1 |
| COVID-19 | 1 |
| Crohn Disease | 1 |
Trials
Showing 1 to 21 of 21. Each trial links to its page on Pharma Observatory.
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
No changes to these trials in the last 7 days.
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