Clinical trials
Vitamin D Deficiency trials with no applicable phase
Search ClinicalTrials.gov registrations by keyword, then narrow by condition, phase, status, country and start year.
336 trials match Source: ClinicalTrials.gov registrations
Trials started per year
By phase, 2000 to 2026.
| Category | Trials |
|---|---|
| 2001 | 2 |
| 2004 | 1 |
| 2005 | 5 |
| 2006 | 5 |
| 2007 | 10 |
| 2008 | 11 |
| 2009 | 14 |
| 2010 | 20 |
| 2011 | 21 |
| 2012 | 18 |
| 2013 | 15 |
| 2014 | 16 |
| 2015 | 27 |
| 2016 | 21 |
| 2017 | 16 |
| 2018 | 24 |
| 2019 | 15 |
| 2020 | 14 |
| 2021 | 18 |
| 2022 | 13 |
| 2023 | 17 |
| 2024 | 12 |
| 2025 | 15 |
| 2026 | 5 |
Status
Trials by registry status. Select a bar to filter.
| Category | Trials |
|---|---|
| Completed | 242 |
| Unknown status | 41 |
| Recruiting | 14 |
| Terminated | 14 |
| Withdrawn | 9 |
| Not yet recruiting | 7 |
| Active, not recruiting | 6 |
| Enrolling by invitation | 2 |
| Suspended | 1 |
Top lead sponsors
A sponsor with a page on Pharma Observatory links to it.
| Category | Trials |
|---|---|
| University of Wisconsin, Madison | 8 |
| Creighton University | 7 |
| Massachusetts General Hospital | 7 |
| Boston University | 6 |
| Cairo University | 6 |
| University College Cork | 6 |
| Applied Science Private University | 5 |
| National Taiwan University Hospital | 5 |
| Bangladesh Medical University | 4 |
| University of Ulster | 4 |
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 | 336 |
| Obesity | 22 |
| Insulin Resistance | 16 |
| Osteoporosis | 8 |
| Asthma | 7 |
| Bone Diseases, Metabolic | 7 |
| Diabetes Mellitus | 7 |
| Diabetes Mellitus, Type 2 | 7 |
| Renal Insufficiency, Chronic | 7 |
| COVID-19 | 6 |
Trials
Showing 76 to 100 of 336. Each trial links to its page on Pharma Observatory.
236 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.
No changes to these trials in the last 7 days.
Go deeper on Pharma Observatory
Pharma Observatory connects clinical trials, sponsors, sites and investigators in one searchable platform.