What is the best medicine for yin and yang deficiency?

Yin and yang deficiency specifically depends on which zang-fu organ yin, which zang-fu organ yang deficiency. Therefore, simply say yin and yang deficiency, it is impossible to determine what should be tonic, what medicine to eat. If kidney yin and yang deficiency, then you can eat Shenqi Pill, Liuwei Dihuang Pill. Shenqi Pill is Liuwei Dihuang Pill, plus aconite and cinnamon. There are also lung yin deficiency, spleen yang deficiency, or stomach yin deficiency and spleen yang deficiency, as well as liver yin deficiency and spleen yang deficiency, etc., involving a wide range of pathogenesis. It must be diagnosed by a professional doctor after syndrome differentiation and analysis. Simply saying that yin and yang are deficient is not accurate enough, so it is impossible to determine what medicine to take. Often to the extent of yin and yang deficiency, then the pathogenesis of the body has been more complex.