Vitamin C's hidden role in kidney stones revealed

NCT ID NCT04603898

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

Summary

This study looks at how vitamin C (ascorbic acid) turns into oxalate, a key component of kidney stones. Researchers will give a special labeled vitamin C to 136 adults—both with and without kidney stones—and measure how much oxalate ends up in their urine. The goal is to understand if vitamin C contributes to stone formation, especially in people who are obese.

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Conditions

The condition(s) this trial relates to.

Kidney Calculi nephrolithiasis

As listed by the trial registrant

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

Contacts and locations

Locations

  • University of Alabama at Birmingham

    Birmingham, Alabama, 35243-3353, United States