H07 Rehmannia Eight Formula
(Hachimi-jio-gan; Bai Wei Di Huang Wan)
Shu di huang is the chief herb, which can tonify the kidneys. Shan zhu yu and shan yao, the deputy herbs, tonify the liver and spleen and benefit the vital energy. The chief and assistant herbs together have the effect of tonifying the kidneys and benefiting the essence as well as nourishing the kidneys. All these herbs coordinated together are warm but not dry; nourishing but not greasy.