Herbal extract may flush out tiny kidney stone remnants

NCT ID NCT06651294

Recruiting now Disease control Sponsor: Neopharm Bulgaria Ltd. Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Aug 11, 2026 · Updated 4 times

Summary

This study tests whether a herbal supplement called Neorenal Forte can help eliminate small leftover kidney stone fragments after laser surgery. About 120 adults with kidney stones will take either the supplement or a placebo for three months. The goal is to see if more people become completely stone-free or have only tiny fragments (2 mm or smaller) with the supplement.

What this could mean

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

Active substance: Neorenal Forte (a blend of herbal extracts from birch, hernia, cranberry bush, and couch grass)
What this could lead to: If it works, this could offer a simple, non-surgical way to help people pass leftover kidney stone fragments after laser surgery.
What could go wrong: This is an early-stage trial with only 120 participants, testing a dietary supplement. The effect may be small or no better than placebo, and results may not apply to everyone with kidney stones.

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Conditions

The condition(s) this trial relates to.

Kidney Calculi urolithiasis

As listed by the trial registrant

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

UROLITHIASIS

Contacts and locations

Locations

MHAT "Heart and Brain"
RECRUITING

Burgas, Bulgaria
Military Medical Academy
RECRUITING

Sofia, 1606, Bulgaria
UMBALSM "N. I. Pirogov"
RECRUITING

Sofia, 1606, Bulgaria
UMHAT "Alexandrovska"
RECRUITING

Sofia, 1431, Bulgaria
UMHAT "Dr. Georgi Stranski"
RECRUITING

Pleven, 5800, Bulgaria
UMHAT "Sofiamed"
RECRUITING

Sofia, 1797, Bulgaria
UMHAT "St. George"
RECRUITING

Plovdiv, 4000, Bulgaria
UMHAT Kaspela
RECRUITING

Plovdiv, 4001, Bulgaria
University Hospital for Active Treatment "Saint Marina"
RECRUITING

Pleven, 5800, Bulgaria

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