Compound codeine solution (Federal Cough Suppressant, Children's Federal Cough Suppressant, Federal Teloqi, Children's Federal Teloqi, Fidak, etc.), contains codeine phosphate and ephedrine hydrochloride components, acts on the central nervous system, and is significantly effective for severe dry cough without phlegm. It can be used for treatment after other cough suppressants have failed... For yellow and viscous sputum that is difficult to expel, thirst, sore throat, products such as Beibei Pear Paste, She胆Beibei Liquid, Sangju Cold Tablets, and Luohan Fruit Cough Granules can be selected. For headache, nasal congestion, rhinorrhea, itchy throat, and thin sputum, products such as Pinellia Dew, Xiaoqinglong Syrup, She胆Chenpi Powder, and Tongxuanlipai Pills are recommended. For dry cough without phlegm, dry mouth and nose, sore throat...