Synopsis

Source of validity: Traditional
Rating (out of 5): 1

Currants, which may refer to black currant (Ribes nigrum), red currant (Ribes rubrum), or the dried fruit of small grapes (Vitis vinifera), have a history of traditional use in various folk medicine systems. In European herbal medicine, black currant leaves and berries have been used as mild diuretics and to support urinary tract health. Some sources mention their use in promoting urine flow, which is a common traditional approach to help flush out kidney stones or prevent their formation. However, there is very limited direct historical documentation specifically linking currants to the treatment or prevention of kidney stones. Furthermore, the majority of traditional uses focus more broadly on kidney and urinary tract health rather than kidney stones per se.

On the scientific side, there is little evidence supporting the efficacy of currants for kidney stones. Some laboratory studies have examined the antioxidant and anti-inflammatory properties of currants, particularly black currant, and a few small clinical studies have assessed the effect of black currant juice on urinary parameters. For example, black currant juice has been shown to increase urinary pH and citrate excretion, which could theoretically reduce the risk of certain types of kidney stones. However, these findings are preliminary, and there are no robust clinical trials demonstrating a clear benefit for kidney stone prevention or treatment.

In summary, the use of currant for kidney stones is primarily based on tradition, with only weak supporting evidence and minimal scientific validation at present.

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