Er Chen Pills can treat phlegm-dampness related conditions, but Er Chen Pills are the strongest proprietary Chinese medicine for phlegm-dampness is too absolute, Er Chen Pills are mainly used for the treatment of phlegm-dampness stagnation caused by coughing and phlegm, chest and epigastric distension, nausea and vomiting. Er Chen Pills is a kind of Chinese patent medicine. It is composed of Chen Pi, half-sia, licorice and so on. It is effective in drying dampness and resolving phlegm (removing phlegm from the body with drugs that dry dampness), in addition to regulating qi and harmonizing the stomach. It is used for cough and phlegm, chest and epigastric distension, nausea and vomiting caused by stagnation of phlegm and dampness. The adverse reactions and contraindications of Er Chen Wan are not clear. Avoid smoking, alcohol and spicy, cold, greasy food. It is not advisable to take tonic Chinese medicine at the same time during the medication. Dry cough due to lung yin deficiency is not applicable. Allergic to this product is prohibited, allergic individuals should be cautious. If there is a need for medication, it should be used under the guidance of a doctor’s diagnosis, and should not be used blindly on its own to avoid adverse consequences.