Synopsis

Source of validity: Traditional
Rating (out of 5): 3

Boerhavia diffusa, commonly known as "Punarnava" in Ayurvedic medicine, has a long history of use for supporting kidney health and urinary tract function. Traditional Ayurvedic texts describe Punarnava as a "rejuvenator" for the kidneys, often used to address edema, fluid retention, and support normal urinary output. Its Sanskrit name, meaning "that which renews the body," reflects this historical application.

Several preclinical studies have indicated that extracts of Boerhavia diffusa may possess diuretic and anti-inflammatory actions, which could theoretically benefit the kidneys by promoting urine flow and reducing swelling. However, most of these studies are animal-based or in vitro, with limited high-quality human clinical trials to substantiate these effects. A few small human studies suggest possible improvements in renal function parameters, but these are not sufficient for robust scientific validation.

Despite the limited clinical data, the extensive traditional use and preliminary research support a moderate level of evidence for using Boerhavia diffusa in kidney health. More rigorous, large-scale clinical trials are needed to conclusively confirm its efficacy and safety for this purpose. Until such data are available, its use remains grounded primarily in traditional practice, with some scientific promise.

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