There isn’t just one best cough suppressant, the medication just has to be symptomatic. A cough from pneumonia may be a cough caused by inflammation, and anti-inflammatory medications should be the best cough suppressants. Asthma cough is due to airway spasm causing cough, airway antispasmodic and reduce airway reactivity of the drug is the best cough medicine. Lung cancer cough is caused by tumor stimulation or tumor compression of the airway, chemotherapy to relieve tumor compression, such as really coughing a lot, the application of central cough suppressant drugs to treat. Therefore, different causes of cough, the use of cough medicine is different, so there is no what is the best cough medicine. If you have a cough caused by a cold, you may be able to use some cough syrup. Pharyngitis caused cough, need to treat pharyngitis, not cough. Therefore, different causes of different treatments, there is no such thing as the best cough medicine. Therefore, in the clinical or in the process of buying drugs, do not go to the drugstore to ask for the best cough medicine, but according to their own condition to decide what drug is the best. Therefore, in the process of buying medicine, you must first consult a professional, so that he or she can give an accurate judgment, what is the cause of the cough, so as to take the most effective cough medicine, which is the best cough medicine.