Clinical trials
Vitamin A Deficiency trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
65 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2000 | 1 |
| 2001 | 1 |
| 2004 | 2 |
| 2006 | 1 |
| 2007 | 2 |
| 2008 | 2 |
| 2009 | 2 |
| 2010 | 2 |
| 2011 | 3 |
| 2012 | 5 |
| 2013 | 2 |
| 2014 | 2 |
| 2015 | 4 |
| 2016 | 5 |
| 2017 | 2 |
| 2018 | 2 |
| 2019 | 5 |
| 2020 | 3 |
| 2021 | 2 |
| 2022 | 5 |
| 2023 | 2 |
| 2024 | 2 |
| 2025 | 5 |
| 2026 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 48 |
| Unknown status | 9 |
| Recruiting | 6 |
| Active, not recruiting | 1 |
| Not yet recruiting | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Johns Hopkins Bloomberg School of Public Health | 5 |
| USDA, Western Human Nutrition Research Center | 5 |
| University of California, Davis | 4 |
| Purdue University | 3 |
| Swiss Federal Institute of Technology | 3 |
| University of Wisconsin, Madison | 3 |
| Wageningen University | 3 |
| London School of Hygiene and Tropical Medicine | 2 |
| Newcastle University | 2 |
| Aga Khan 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 A Deficiency | 65 |
| Anemia, Iron-Deficiency | 8 |
| Anemia | 5 |
| Iron Deficiencies | 5 |
| Vitamin B 12 Deficiency | 4 |
| Folic Acid Deficiency | 3 |
| Inflammation | 3 |
| Malnutrition | 3 |
| Callosities | 2 |
| Growth Disorders | 2 |
Trials
Showing 26 to 50 of 65. 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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