Rapid cough suppressants are mainly central cough suppressants, which are more effective in relieving cough. The more commonly used drugs are dextromethorphan and compound licorice combination. When the above-mentioned drugs do not work well, you can also use codeine phosphate, this drug can not be taken for a long time, if long-term use is easy to cause addiction, dependence, need to be under the guidance of a physician to take the correct oral. When there is a lot of phlegm, do not use central cough suppressants, it is necessary to use cough suppressants and phlegm-removing drugs to dilute the phlegm, so that the phlegm can be easily discharged, you can use acetylcysteine, aminoglutethimide granules, you can also use Chinese medicine cough suppressants and phlegm-removing drugs, you also need to drink more water and pay attention to a light diet in general.