Clinical trials
Observational Vitamin A Deficiency trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
16 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2004 | 1 |
| 2009 | 1 |
| 2012 | 1 |
| 2014 | 1 |
| 2015 | 2 |
| 2018 | 1 |
| 2019 | 1 |
| 2020 | 1 |
| 2021 | 1 |
| 2022 | 4 |
| 2023 | 1 |
| 2024 | 1 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 12 |
| Unknown status | 2 |
| Active, not recruiting | 1 |
| Recruiting | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| Purdue University | 3 |
| University of Wisconsin, Madison | 2 |
| Direction Centrale du Service de Santé des Armées | 1 |
| Huazhong University of Science and Technology | 1 |
| Institut de Recherche en Sciences de la Sante, Burkina Faso | 1 |
| Instituto Nacional de Salud Publica, Mexico | 1 |
| National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) | 1 |
| Newcastle University | 1 |
| Swiss Federal Institute of Technology | 1 |
| USDA, Western Human Nutrition Research Center | 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 | 16 |
| Anemia, Iron-Deficiency | 4 |
| Anemia | 2 |
| Hypervitaminosis A | 2 |
| Inflammation | 2 |
| Iron Deficiencies | 2 |
| Vitamin B 12 Deficiency | 2 |
| Folic Acid Deficiency | 1 |
| Leukoplakia | 1 |
| Malnutrition | 1 |
Trials
Showing 1 to 16 of 16. 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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