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.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

Crohn disease inflammatory bowel disease Iron Deficiencies ulcerative colitis vitamin D deficiency

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)