There is no specific medicine for dry cough. There are many diseases that can cause dry cough, including acute upper respiratory tract infection, acute bronchitis, cough variant asthma, gastroesophageal reflux disease, etc., which need to be treated according to the cause. Respiratory diseases such as acute upper respiratory tract infections, acute bronchitis, etc., such as dry cough symptoms, you can use cough suppressant drugs to help reduce the patient’s cough performance, such as diethylcarbamazine hydrochloride, dextromethorphan hydrobromide, phenylpropylphenidate and so on belong to this kind of cough suppressant drugs. If the cough is caused by other diseases, other medications may be needed. For example, coughs caused by gastroesophageal reflux disease may need to be treated with drugs such as pantoprazole, and cough variant asthma may be treated with inhaled bronchodilators (e.g., salbutamol) and glucocorticoids (e.g., budesonide). To summarize, when the symptoms of persistent dry cough appear, you need to actively seek medical treatment, improve the examination, and then use the relevant medication after clarifying the cause of the disease.