Clinical trials
Vitamin D Deficiency trials
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
796 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2001 | 2 |
| 2003 | 1 |
| 2004 | 5 |
| 2005 | 7 |
| 2006 | 10 |
| 2007 | 21 |
| 2008 | 28 |
| 2009 | 35 |
| 2010 | 51 |
| 2011 | 56 |
| 2012 | 52 |
| 2013 | 37 |
| 2014 | 39 |
| 2015 | 57 |
| 2016 | 41 |
| 2017 | 49 |
| 2018 | 51 |
| 2019 | 39 |
| 2020 | 41 |
| 2021 | 41 |
| 2022 | 36 |
| 2023 | 27 |
| 2024 | 29 |
| 2025 | 25 |
| 2026 | 14 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 553 |
| Unknown status | 113 |
| Terminated | 38 |
| Recruiting | 30 |
| Withdrawn | 24 |
| Active, not recruiting | 17 |
| Not yet recruiting | 13 |
| Enrolling by invitation | 5 |
| Suspended | 3 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| University of Wisconsin, Madison | 14 |
| Ain Shams University | 10 |
| Creighton University | 10 |
| Massachusetts General Hospital | 10 |
| Cairo University | 9 |
| Medical University of Graz | 9 |
| Boston University | 8 |
| National Taiwan University Hospital | 8 |
| Second Affiliated Hospital of Wenzhou Medical University | 8 |
| University of Aarhus | 8 |
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 | 796 |
| Obesity | 48 |
| Insulin Resistance | 37 |
| Osteoporosis | 24 |
| Renal Insufficiency, Chronic | 22 |
| Diabetes Mellitus | 21 |
| Bone Diseases, Metabolic | 20 |
| COVID-19 | 19 |
| Diabetes Mellitus, Type 2 | 19 |
| Inflammation | 17 |
Trials
Showing 76 to 100 of 796. Each trial links to its page on Pharma Observatory.
696 more trials match. See them on Pharma Observatory
Recently changed trials
Changes observed in the last 7 days, newest first, site-count changes left out. Source: ClinicalTrials.gov.
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