Vitamin D clinical trials
Vitamin D is named as an intervention in 10 current clinical trials in our Egypt, China, France, Sweden, Singapore and Australia registers. 5 are recruiting patients now. The most common phase is Not applicable. The sponsor with the most trials is Second Affiliated Hospital, Zhejiang University, School of Medicine (1). The most-studied condition is Osteoarthritis of the Hip or Knee.
Patient leaflets for Vitamin D
The package leaflet is the official guide for patients that comes with every medicine. These links go to the regulators that publish it.
- UKUnited Kingdom: Search MHRA ProductsPatient information leaflets and SmPCs for UK-licensed products.
- USUnited States: Search DailyMedFDA-approved labels, including patient and medication guides.
Leaflets differ between brands and countries; always read the one that comes with your own medicine. This is regulatory information, not medical advice.
Trials by status
Trials by phase
Clinical trials of Vitamin D
10 trialsRegisters list studies that are recruiting, about to open, active but closed to enrolment, or enrolling by invitation. The UK and USA registers cover industry-sponsored studies only. Trial titles and statuses are copied from the registry as published.
Conditions studied with Vitamin D
16 conditionsAll 16 conditions
| Condition (as registered) | Trials |
|---|---|
| Osteoarthritis of the Hip or Knee | 1 |
| Joint Arthroplasty | 1 |
| Epilepsy | 1 |
| Pregnant Woman | 1 |
| Bone Health | 1 |
| Hypocalcemia | 1 |
| Allergic Rhinitis Due to Grass Pollen | 1 |
| Sarcopenia | 1 |
| Food Allergy | 1 |
| Corrosive Injury | 1 |
| HELICOBACTER PYLORI INFECTIONS | 1 |
| Helicobacter Infection | 1 |
| Helicobacter Pylori Gastrointestinal Tract Infection | 1 |
| Helicobacter Pylori Infected Patients | 1 |
| Peripheral Neuropathic Pain | 1 |
| Common Warts (Verruca Vulgaris) | 1 |
Sponsors
lead sponsor per trialBy country register
| Register | Trials | Recruiting |
|---|---|---|
| Clinical trials in Egypt | 4 | 1 |
| Clinical trials in China | 2 | 1 |
| Clinical trials in France | 1 | 1 |
| Clinical trials in Sweden | 1 | 1 |
| Clinical trials in Singapore | 1 | 1 |
| Clinical trials in Australia | 1 | 0 |
A trial with sites in more than one country appears in each of those registers.
Related compounds
Questions about Vitamin D trials
How many clinical trials are testing Vitamin D?
10 current trials in our Egypt, China, France, Sweden, Singapore and Australia registers name Vitamin D as a drug or biological intervention, as of the registry sync on 10 November 2026. Completed and withdrawn studies are not counted.
Are Vitamin D trials recruiting patients?
Yes. 5 of the 10 trials are recruiting: 1 with sites in Egypt, 1 with sites in China, 1 with sites in France, 1 with sites in Sweden and 1 with sites in Singapore. Eligibility and site contacts are on each trial's record. Only the study team can confirm whether a patient is eligible.
Who sponsors Vitamin D clinical trials?
Second Affiliated Hospital, Zhejiang University, School of Medicine (1), The Fourth Affiliated Hospital of Zhejiang University School of Medicine (1), Hôpital NOVO (1) and Lars Olaf Cardell (1), among 10 lead sponsors in total. The number in brackets is how many trials each organisation leads.
Where does this information come from?
Every trial, status, phase and sponsor on this page is copied from public ClinicalTrials.gov records by a daily sync. Nothing here describes how Vitamin D works or whether it is effective, and it is not medical advice.
How this page is built
Everything on this page is copied from public ClinicalTrials.gov registry records — it is not written from memory, and nothing here describes how Vitamin D works or whether it is effective. Each trial links to its own record so you can check it yourself.
- ClinicalTrials.gov (U.S. National Library of Medicine) ↗ Trial IDs, titles, intervention names and synonyms, phase, overall status, lead sponsor and conditions for every trial on this page
This page is built automatically: a daily sync job reads the registry records behind our country trial registers, collects every trial that lists Vitamin D (or a registered synonym) as a drug or biological intervention, and tabulates the registry fields directly. Placebos and generic comparators are excluded. There is no AI drafting and no per-compound editorial pass, and the page has not been clinically reviewed. The “last verified” date above is the timestamp of that sync, not a review date. Our general editorial approach is described in our editorial standards and corrections policy. The ClinicalTrials.gov data on this page was last retrieved on 10 Nov 2026. How every register is built: methodology · fixes we have made: corrections log.