If the patient’s cough is caused by pharyngitis, oral laxative may have some efficacy. However, if the cough is caused by other reasons, oral laxative is ineffective. For example, if the patient’s cough is due to mycoplasma infection, oral erythromycin, azithromycin, levofloxacin and so on are needed. If the patient’s cough is due to bacterial infection, antibiotics are needed, such as amoxicillin, cefixime, levofloxacin and so on. If the patient is suffering from cough due to cough variant asthma, he/she needs to take oral Menzies sodium and inhalation of budesonide formoterol powder inhaler. If the patient is due to cardiac insufficiency and cough, according to the condition of oral cardiotonic, diuretic, vasodilator drugs, such as digoxin, furosemide, spironolactone, isosorbide mononitrate extended-release tablets, nitroglycerin and so on.