4-year-old baby night cough how to do, have phlegm

Four-year-old children cough in the evening when sputum, this should be caused by upper respiratory tract infection phenomenon, more common in viral infection, can be given antiviral treatment, if it is caused by bacterial infection, can be given azithromycin treatment. In addition, sputum more, can be budesonide, terbutaline aerosol inhalation treatment.