Cough medicine is not absolutely good or bad, need to be combined with the specific condition of the medication, common cough medicine are: phenylpropylpiperine phosphate, propoxypromazine, dextromethorphan, codeine and so on. The choice of cough medicine needs to be combined with the condition, commonly used cough medicines such as phenproperine, propoxyphene, dextromethorphan, etc., the drug is less addictive, the effect of cough can be. Codeine belongs to the restricted use of drugs, the drug is an opioid, with addiction. However, it has a strong cough suppressant effect and can be used for a short period of time for certain persistent coughs. The use of cough medicine, but also need to take into account whether the patient has cough phlegm, if there are obvious symptoms of cough phlegm, especially when the phlegm is not easy to cough out, generally need to choose phlegm medicine, do not recommend the use of the above mentioned cough medicines, especially codeine and other strong cough medicine. In addition to coughing patients, can not blindly stop coughing, but also need to investigate the cause of the disease, targeted treatment. If the cough is caused by allergies, antihistamines (e.g., loratadine) or inhaled glucocorticosteroids (e.g., budesonide) may be used. These medications should be used under the supervision of a physician.