The Chinese patent medicine commonly used to nourish kidney yin is Liu Wei Di Huang Wan. Liu Wei Di Huang Wan has the function of filling essence and nourishing yin to nourish the kidney, mainly treating the evidence of kidney yin deficiency. Six Flavors Dihuang Pill contains Shu Di Huang, which fills the marrow and nourishes yin, and Shan Yu Pei, which nourishes the liver and kidney and astringently nourishes sperm. It contains yam, which has the effect of nourishing both the spleen and kidney, nourishing both the kidney and fixing the essence, and nourishing the spleen to help the biochemical source of the latter. Contains Ze Xie, which has the effect of dipping the kidney turbidity while nourishing the yin essence. If there is heat in Yin deficiency, you can also switch to taking Zhi Bai Di Huang Wan orally.