Formula composition: Pinellia ternata, Fructus Aurantii each10g, Poria cocos 9g, and Radix Glycyrrhizae preparata 5g. Decoct with water.

Taking orange as a minister, regulating qi and drying dampness, making qi smooth and phlegm disappear; Supplemented by poria cocos, strengthening the spleen and infiltrating dampness, so that dampness can eliminate spleen and not produce phlegm; Ginger can reduce the adverse effects of drinking, cure the poison of Pinellia ternata, and help Pinellia ternata and oranges to promote qi circulation and resolve phlegm. Use a little ebony to collect lung qi, and mix it with Pinellia ternata. When it is scattered, it will be collected, but it will complement each other, and phlegm will not hurt healthy qi. Glycyrrhiza uralensis Fisch can be used to reconcile various drugs, and it can also moisten the lungs and regulate the middle energizer.

This prescription is the basic prescription for eliminating phlegm. Pinellia ternata is pungent, warm and dry, and it is the best to eliminate dampness and phlegm, which can reduce adverse reactions and stop vomiting and become the main medicine. It is supplemented by orange peel to regulate qi, eliminate dampness and eliminate phlegm, so that qi is smooth and phlegm is eliminated; Supplemented by Poria cocos to strengthen the spleen and ooze dampness, so that dampness does not gather; Strengthen the spleen with licorice and medium coke. All the medicines are combined to play the role of eliminating dampness, harmonizing middle energizer, regulating qi and resolving phlegm. Tangerine peel and Pinellia ternata in the prescription are not cured for a long time, hence the name "Chen Er".

Application of Erchen Decoction

To treat damp phlegm, Rhizoma Atractylodis and Cortex Magnolia Officinalis can be added to increase the power of eliminating dampness and resolving phlegm; For heat phlegm, Danxing and Fructus Trichosanthis can be added to clear away heat and resolve phlegm; To treat cold phlegm, dry ginger and asarum can be added to warm and tonify cold phlegm; Gastrodia elata and Bombyx Batryticatus can be added to treat wind-phlegm vertigo.

To treat phlegm, radish seeds and malt can be added to help digestion and resolve phlegm; To treat phlegm and blood stasis, you can add Xiangfu, Pericarpium Citri Reticulatae Viride and Radix Curcumae to relieve depression and resolve phlegm; For treating scrofula, the phlegm core can follow the meridian, and seaweed, kelp and oyster can be added to soften phlegm.