There is no basis for the statement that “six kinds of people should not take Er Chen Pills”. The contraindications of Er Chen Pills are not clear, but it can be used for chest and epigastric distension, cough and phlegm, etc. Er Chen Pills are composed of Gan Cao, Poria and Ginger. Er Chen Pill is composed of Chen Pi, Licorice, Poria, Pinellia, Semixia (made), Ginger, which has the effect of harmonizing the stomach and regulating the qi, drying dampness and resolving phlegm (removing phlegm in the body with dampness-drying medicines), and it can be used for coughing and phlegm caused by phlegm-dampness stagnation, nausea and vomiting, and distension of the chest and epigastric region. In this formula, Semixia dries dampness and resolves phlegm, eliminates lumps and disperses knots, and lowers rebelliousness and harmonizes the stomach; Pericarpium Citri Reticulatae is hard, warm and dry, dries dampness and resolves phlegm, and moves stagnant qi; Poria strengthens the spleen and seeps away dampness; Ginger controls the toxicity of Semixia and helps Semixia to lower the rebelliousness; and Radix Glycyrrhiza Glutinosa harmonizes the medicines. Contraindications and adverse reactions of this product are not clear, avoid smoking, alcohol and spicy, cold, greasy food. It is not advisable to take tonic Chinese medicine at the same time. Not suitable for dry cough due to lung yin deficiency. Do not use the drug by yourself to avoid adverse reactions, if you feel unwell, please go to the hospital.