What kind of medicine is good for a 3-year-old child with a cold and cough?

Patient's question:

No

Doctor's answer:

You can take oral cough and phlegm-relieving medications, such as licorice syrup, ambroxol, etc. If there is an infection, take oral erythromycin and other antibiotics, as well as oral trachea-expanding medications, such as theophylline.