Liu Wei Di Huang Wan is preferred for kidney yin deficiency, but should never be used for kidney yang deficiency. The six flavors of dihuang pill is as a representative drug to tonify the kidney yin, can be used as an important treatment of choice drugs. However, if you have a kidney yang deficiency, you can't use it. If you want to tonify the kidney yang, that is, if you want to tonify the yang, you should use the Kidney Energy Pill, which is the classic Chinese medicine for tonifying the kidney yang. The most important thing to remember is that you have to be able to recognize a good yin and yang deficiency before you can make up for the deficiency.