2. Yin-Nourishing and Cooling-Type Formulas

2. Yin-Nourishing and Cooling-Type Formulas

When warm diseases progress from the qi level to the ying blood level, symptoms of yin injury and blood disturbance appear. At this point, simply using heat-clearing and heat-discharging agents is no longer sufficient; only yin-nourishing and cooling agents can truly address the problem. Representative formulas of this type include Qingying Tang, Yu Nu Jian, Huaban Tang, and Xijiao Di Huang Tang.

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Qingying Decoction (from "Wenbing Tiaobian") is composed of bamboo leaves, salvia miltiorrhiza, rhinoceros horn, forsythia, coptis, honeysuckle, rehmannia root, scrophularia root, ophiopogon, and other herbs. It is primarily used to treat conditions where heat has invaded the营blood, with clinical manifestations including tidal fever and thirst, confusion and delirium, restlessness and insomnia, and faint rashes. From a modern medical perspective, this formula is suitable for electrolyte disturbances and dehydration caused by high fever in acute infectious diseases.
Yunü Decoction (from "Jingyue Quanshu") consists of anemarrhena, achyranthes, gypsum, rehmannia root, ophiopogon, and other herbs. It is mainly indicated for symptoms such as vexing heat and thirst, headache and toothache, red tongue with little coating, and a fine, rapid pulse. In traditional Chinese medicine, this pattern is considered to be excess yang in the Yangming channel and deficiency in the Shaoyin channel, essentially reflecting severe heat damaging yin.
Huaban Decoction (from "Wenbing Tiaobian") is made up of gypsum, anemarrhena, japonica rice, licorice, scrophularia root, peony, and cortex moutan. This formula is the principal prescription for heat invading the blood level, primarily used to treat conditions where intense heat forces blood to flow abnormally, presenting with tidal fever and thirst, confusion and delirium, toxic blood rash, hematemesis, epistaxis, hematochezia, hematuria, and a dark red, glabrous tongue with a fine, rapid pulse. In recent years, this formula has been widely applied to bleeding associated with real-pattern heat syndromes in various internal medicine disorders.