Clinical trials
Phase 2 Vitamin D Deficiency trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
23 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2008 | 1 |
| 2009 | 1 |
| 2010 | 2 |
| 2011 | 6 |
| 2012 | 2 |
| 2013 | 1 |
| 2016 | 1 |
| 2018 | 4 |
| 2019 | 2 |
| 2020 | 1 |
| 2021 | 1 |
| 2025 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 15 |
| Terminated | 3 |
| Recruiting | 2 |
| Active, not recruiting | 1 |
| Unknown status | 1 |
| Withdrawn | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| National Institute of Allergy and Infectious Diseases (NIAID) | 2 |
| Texas Tech University Health Sciences Center | 2 |
| Allina Health System | 1 |
| Ascension Health | 1 |
| Children's Hospital Los Angeles | 1 |
| Children's Hospital Medical Center, Cincinnati | 1 |
| Columbia University | 1 |
| Gary M Brittenham, MD | 1 |
| Heidi Moretti, MS, RD | 1 |
| Indiana University | 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 | 23 |
| Respiratory Tract Infections | 3 |
| Acute Chest Syndrome | 2 |
| Anemia, Sickle Cell | 2 |
| Asthma | 2 |
| Insulin Resistance | 2 |
| Lupus Erythematosus, Systemic | 2 |
| Obesity | 2 |
| Acquired Immunodeficiency Syndrome | 1 |
| Anemia, Hemolytic, Congenital | 1 |
Trials
Showing 1 to 23 of 23. 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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