European White Birch (Betula pendula) has a longstanding place in traditional European herbal medicine for supporting urinary tract health, including the management of kidney stones. Traditionally, birch leaves have been used as a mild diuretic, believed to promote urine production and thus help "flush out" small kidney stones or prevent their formation. This practice is documented in several historical herbal texts and remains part of folk remedies in parts of Europe and Russia.

Scientifically, the evidence for birch leaves aiding kidney stones is limited. Some in vitro and animal studies indicate that birch leaf extracts possess diuretic and mild anti-inflammatory properties, which could theoretically assist in diluting urine and easing the passage of urinary calculi. However, well-designed clinical trials in humans are lacking, and no strong data confirm its efficacy in dissolving or preventing kidney stones. Major pharmacopoeias such as the German Commission E recognize birch leaf for its diuretic effect but stop short of endorsing it specifically for kidney stones.

In summary, while European White Birch is traditionally used to support kidney stone management due to its mild diuretic action, scientific validation is weak, and its use is mainly justified by historical precedent rather than robust clinical evidence.