Library

Treats all conditions resulting from excessive blood loss, leading to Yin deficiency and Qi weakness, manifesting as irritability, heat sensation, thirst, restlessness during sleep, etc.
Siwu Decoction (Four Substances Decoction) with added Renshen (Ginseng Radix et Rhizoma) and Huangqi (Astragali Radix). In another prescription, Shaoyao (Paeoniae Radix Alba) is omitted. Decoct in water and take orally.

[Collected Annotations] Ke Qin stated: The *Neijing* (Classic of Internal Medicine) says: "Yin resides within, serving as the guardian of Yang; Yang resides without, serving as the envoy of Yin." Therefore, if Yang lacks Yin, it is called Solitary Yang; if Yin lacks Yang, it is called Dead Yin. Zhu Zhenheng said that Siwu Decoction consists entirely of Yin-nourishing herbs, executing the command of Earth's closure and storage, rather than fostering growth. Thus, adding Zhimu (Anemarrhenae Rhizoma) and Huangbai (Phellodendri Cortex) to Siwu Decoction, when taken for a long time, can lead to sterility, because it is deemed lacking in Yang. This formula uses Renshen and Huangqi combined with Siwu Decoction to treat conditions such as Yin deficiency and blood collapse. Essentially, Yin and Yang are mutually rooted; when Yin is deficient, Yang has no attachment, resulting in irritability, heat, dryness, and thirst; Qi and Blood are exterior-interior counterparts; when Blood collapses, Qi has no return, resulting in restlessness during sleep. However, there is no method for rapid tonification of Yin deficiency; the strategy lies in cultivating Yin to store Yang. For blood collapse, there is a mechanism for generating blood, but one must first tonify Qi. This follows the principle of "Yang generation leads to Yin growth" and "Blood follows Qi circulation." Hence it is said: "Yin deficiency results in lack of Qi; lack of Qi leads to death." Is this formula an expansion of the meaning found in Zhang Zhongjing's Baihu Jia Renshen Tang (White Tiger Decoction plus Ginseng)? Predecessors treating Yin deficiency using Bazhen Tang (Eight Treasures Decoction) or Shiquan Dabu Tang (Ten Significant Tonifying Decoction) often failed to achieve efficacy because Gancao (Licorice Radix et Rhizoma)'s sweet nature does not reach the Lower Jiao (Lower Burner); Baizhu (Atractylodis Macrocephalae Rhizoma)'s dryness is unfavorable to Kidney Yin; Fuling (Poria) promotes leaching and drainage, hindering the ascending and generating functions; Rougui (Cinnamon Bark) is acrid and hot, stirring up deficient fire. These ingredients in the current formula are mellow, mild, and moistening. Upon ingestion, Qi and Blood become unobstructed, interior and exterior harmonize, conforming to the Sage's standards.

Treats Yin deficiency with hyperactive fire, bone-steaming fever (fever originating from deep within the bones), which is quiet during the day and severe at night; women suffering from Heat entering the Blood Chamber (Xueshi); pregnant women with fever.
Siwu Decoction with added Digupi (Lycii Cortex) and Mudanpi (Moutan Cortex), each 3 qian. Decoct in water and take orally.

[Collected Annotations] Ke Qin stated: When Yin is deficient, Yang invades and overcomes it, causing fever. Treatment should be differentiated according to the Three Yin meridians. If Yang pathogenic factors invade the Taiyin Spleen region, Bu Zhong Yi Qi Tang (Tonify the Middle and Augment the Qi Decoction) should be used to raise and lift, restoring clear Yang so that fire extinguishes itself. If they invade the Shaoyin Kidney region, Liuwei Dihuang Wan (Six-Ingredient Pill with Rehmannia) should be used to strengthen the source of Water, thereby calming fire. If they invade the Jueyin Liver region, Digupi Yin (Digupi Decoction) should be used for cooling and tonifying, allowing Blood to be stored so that fire settles. Siwu Decoction is a formula for nourishing Yin and regulating Blood in the Liver. Adding Digupi clears fire from the Will (Zhi) to calm the Kidney, which is tonifying its Mother organ; adding Mudanpi clears fire from the Spirit (Shen) to cool the Heart, which is draining its Child organ. These two bark herbs are cool and moistening, clearing Liver fire without damaging the Spleen and Stomach, differing from the moist and bitter-cold nature of Siwu Decoction plus Zhimu and Huangbai. Therefore, Xiaoyao San (Free and Easy Wanderer Powder) treats Liver fire depressed in its own organ, where Wood depression is resolved by promoting free flow, following its nature; Digupi Yin treats Yang pathogenic factors invading the Liver organ, where intruders are expelled, preventing the bandit from leaving trouble behind. Both formulas are effective agents for the Liver.