Evidence supporting the use of: Nettle
For the health condition: Kidney Stones

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Nettle (Urtica dioica) has been traditionally used in various herbal medicine systems to support kidney health, including the management and prevention of kidney stones. Folk medicine and traditional herbalists often recommend nettle as a diuretic ("water pill"), believing that it helps increase urine output and flush the urinary tract, potentially reducing the risk of stone formation or helping to expel small stones. The German Commission E, which evaluates herbal medicines, lists nettle as a supportive remedy for urinary tract irrigation.

Scientific studies on nettle’s efficacy for kidney stones are limited and generally of low quality. Most research focuses on its general diuretic and anti-inflammatory properties. Some animal studies suggest nettle extracts may increase urinary volume and alter urinary composition in ways that could theoretically reduce stone risk, but these findings have not been robustly demonstrated in human clinical trials. There is also a lack of evidence regarding nettle’s ability to dissolve existing stones or prevent stone recurrence in humans.

In summary, nettle’s use for kidney stones is mainly supported by traditional use and a plausible mechanism (increased urine flow), but rigorous scientific validation is lacking. As such, it should be considered as a supportive measure rather than a primary or proven treatment for kidney stones, and individuals should consult healthcare professionals before use.

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