Da Bu Yin Wan

Da Bu Yin Wan

Rehmannia 8 qian, Anemarrhena 3 qian, Phellodendron 3 qian, Turtle Shell 4 qian

These bitter-cold herbs can both severely deplete vital energy and greatly nourish it. For those with yin deficiency and excessive fire, nothing else can effectively reduce the fire and nourish the yin. Human vitality originates in the kidneys, and this energy depends entirely on water-yin. If water-yin is insufficient, yang energy becomes overly vigorous, leading to irritability, weakness, and heat (1). Using anemarrhena and phellodendron reduces the excess yang, turtle shell suppresses the yang, and rehmannia nourishes the yin. With sufficient yin and suppressed yang, vital energy is preserved and does not leak out.

[Note] (1) Weakness: Refers to atrophy or loss of function in a particular part of the body.

[Note] This formula originates from "Danxi Xinfa." It is the primary tonic for nourishing yin and reducing fire.