Vitamin d may unlock iron absorption in IBD patients

NCT ID NCT07673497

First seen Jun 29, 2026 · Last updated Jun 30, 2026 · Updated 1 time

Summary

This study investigates whether giving vitamin D supplements to adults with inflammatory bowel disease (Crohn's disease or ulcerative colitis) who also have low vitamin D levels can improve their iron status. Participants take high-dose vitamin D3 weekly for 8 weeks, then a lower daily dose, and are checked after 3 months. The goal is to see if correcting vitamin D deficiency helps the body use iron better, potentially reducing the need for iron infusions.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
Vitamin D3 (cholecalciferol)
What this could lead to
If it works, this could point toward a simple vitamin D supplement to help manage iron deficiency in people with IBD.
What could go wrong
This is a small pilot study with only 43 participants and no placebo group, so results may not be conclusive or apply to everyone.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Gazi University

    Ankara, Yenimahalle, 06060, Turkey (Türkiye)

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