Kachnar (Bauhinia variegata) is a plant commonly used in traditional Ayurvedic and Unani medicine for a variety of ailments, including urinary tract and kidney-related disorders. The use of Kachnar for supporting or treating kidney infections is primarily rooted in tradition rather than scientific validation. In Ayurveda, Kachnar is believed to possess anti-inflammatory, antimicrobial, and diuretic properties, and is included in formulations intended to support kidney health and address urinary tract issues.

However, scientific studies directly investigating the efficacy of Kachnar for kidney infections (such as pyelonephritis) are very limited. Some in vitro and animal studies suggest antimicrobial effects of Bauhinia variegata extracts, but these do not specifically target pathogens causing kidney infections, nor do they translate directly to clinical efficacy in humans. There is also some evidence of general anti-inflammatory and antioxidant effects, which are considered beneficial in traditional approaches, but these findings are not specific to kidney infection treatment.

In summary, the use of Kachnar for kidney infection is largely based on traditional knowledge, with very limited scientific evidence to support its use for this specific condition. Clinical studies in humans are lacking, and contemporary medical guidelines do not recognize Kachnar as a treatment for kidney infections.