Er Chen Wan has a good effect in dispelling dampness, and its effect is long-lasting and stable, but the specific duration of taking the medicine depends on the patient’s condition, the course of treatment is not fixed, and must be taken in conjunction with the actual situation of the individual to play a significant role. Patients with heavy dampness in the body often show strong oil secretion, easy sweating, obesity, loose stools and so on. Er Chen Wan has the function of drying dampness and resolving phlegm, regulating Qi and harmonizing the stomach, and is mainly used to treat symptoms such as coughing and phlegm, nausea and vomiting, stuffiness and distension in the upper abdomen caused by phlegm and dampness. The specific course of treatment for patients should be decided by a professional doctor in the Department of Chinese Medicine according to the patient’s own condition, but if the symptoms are not relieved after 7 days of taking the medicine, the medicine should be stopped immediately and symptomatic treatment should be given according to medical advice. During the medication period, patients should avoid smoking and alcohol, cold and stimulating foods, and other tonic Chinese medicines. In addition, it should not be used for a long period of time for patients with weak constitution and cardiovascular diseases, so as not to cause discomfort.