Kuding tea, derived from the leaves of certain species such as Ilex kudingcha or Ligustrum robustum, has been used in Traditional Chinese Medicine (TCM) for centuries. According to TCM theory, Kuding tea is considered to have properties that "clear heat" and "dispel toxins." It is sometimes believed to benefit the kidneys, as well as the liver and heart, though its primary traditional uses are more often related to reducing fever, alleviating headaches, and supporting overall detoxification and digestive health. The association with kidney support is grounded in TCM's holistic understanding of organ systems rather than direct evidence of renal function improvement.

Scientifically, there is little robust evidence specifically linking Kuding tea to support of kidney function. Most modern research on Kuding tea focuses on its antioxidant, anti-inflammatory, and lipid-lowering effects, rather than any direct nephroprotective (kidney-protecting) properties. Animal and in vitro studies suggest general health benefits, but clinical evidence in humans regarding kidney health is lacking. Thus, while there is a traditional basis for its use with the kidneys in some herbal contexts, scientific validation remains minimal at present.