Can a gut bug beat kidney stones?

NCT ID NCT06330246

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study tests whether giving people a live gut bacterium called Oxalobacter formigenes can lower the amount of oxalate in their urine. High urinary oxalate is a major risk factor for calcium oxalate kidney stones. Forty adults with a history of such stones who lack this bacterium will take it by mouth, then follow controlled diets to measure changes in oxalate levels.

What this could mean

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

Active substance

live Oxalobacter formigenes bacteria

What this could lead to

If it works, this could point toward a natural way to reduce kidney stone risk by restoring a helpful gut bacterium.

What could go wrong

This is a small, early-stage study with only 40 participants. It tests a short-term effect, and long-term benefits or safety are not yet known.

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.

Hyperoxaluria Kidney Calculi nephrolithiasis nephrolithiasis, calcium oxalate primary hyperoxaluria urolithiasis

As listed by the trial registrant

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

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • UTSW

    RECRUITING

    Dallas, Texas, 75390, United States

    Contact Email: •••••@•••••

    Contact Email: •••••@•••••

    Contact

  • University of Alabama at Birmingham

    RECRUITING

    Birmingham, Alabama, 35294, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact