Condition
Vitamin D Insufficiency clinical trials and research
As of November 12, 2026, Find a Trial lists 4 Vitamin D Insufficiency clinical trials that are recruiting, at sites in 3 countries (most in United States (2), Greece (1), United Arab Emirates (1)). By phase: Phase 4 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 4Clinical trials
- 3Countries
Newest Vitamin D Insufficiency clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Biofortified eggs to boost vitamin D in healthy adults | — | Ithaca, New York | Recruiting | Oct 5, 2026 |
| Vitamin D Level at Frozen Embryo Transfer and Pregnancy Outcomes | — | Abu Dhabi and 1 other locations | Recruiting | Jul 2, 2026 |
| Vitamin D and its link to bone health, muscle strength, and pain in hospitalized neurological patients | — | Nea Liosia, Athens and 1 other locations | Recruiting | Jan 24, 2025 |
| Evaluating vitamin D's role in sarcoidosis | Phase 4 | Dallas, Texas | Recruiting | Aug 8, 2018 |
All recruiting trials (4)
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Biofortified eggs to boost vitamin D in healthy adults
Aiming to see if eating eggs enriched with vitamin D3 or its active form can raise vitamin D levels in healthy adults with low vitamin D.
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Vitamin D Level at Frozen Embryo Transfer and Pregnancy Outcomes
This study looks at whether a woman's vitamin D level on the day of frozen embryo transfer affects her chances of pregnancy and delivering a baby.
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Vitamin D and its link to bone health, muscle strength, and pain in hospitalized neurological patients
This trial will test whether giving vitamin D to hospitalized adults with stroke, spinal cord injury, or traumatic brain injury helps bone density, body composition, strength, physical performance, and pain.
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Evaluating vitamin D's role in sarcoidosis
This study is testing if giving vitamin D to people with sarcoidosis who have low levels of it can help reduce their symptoms compared to those who get a placebo.
Related topics
Quick answers
How many Vitamin D Insufficiency clinical trials are recruiting right now?
4, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 3 countries. The most sites are in United States (2 trials), Greece (1 trial), United Arab Emirates (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 4: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.