Clinical trials
Observational Vitamin A Deficiency trials in the United States
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
4 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2012 | 1 |
| 2014 | 1 |
| 2015 | 1 |
| 2022 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 3 |
| Active, not recruiting | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| University of Wisconsin, Madison | 2 |
| USDA, Western Human Nutrition Research Center | 1 |
| University of Colorado, Denver | 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 A Deficiency | 4 |
| Hypervitaminosis A | 1 |
| Leukoplakia | 1 |
Trials
Showing 1 to 4 of 4. 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.
Go deeper on Pharma Observatory
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