Liu Wei Di Huang Wan is to tonify kidney yin, tonifying the kidney is divided into tonifying kidney yin and kidney yang and yin and yang double tonic. In addition to Six-flavored Di Huang Pill, Zuo Gui Wan, Dendrobium Nightshade Pill, and Dazhong Yin Pill can tonify kidney yin. Kidney qi pill, right angelica pill can tonify kidney yang, dihuang drink, tortoise and deer two immortal cream yin and yang double tonic.