There are different causes of phlegm with different drugs, the body sensitivity of different drugs have different effects, so there is no best and fastest medicine; common causes of respiratory infections, chronic rhinitis, and so on, feasible aminoglutethimide, nasal rinsing relief. Respiratory infections: such as colds, chronic bronchitis and bronchiectasis and other diseases can be caused by coughing sputum, can be used under the guidance of a physician bromisol oral solution or acetylcysteine preparation of sputum treatment, if accompanied by bacterial or viral infections, need to take cephalosporins anti-infective treatment. Chronic rhinitis: generally due to chronic inflammation stimulation of the nasal mucosa and submucosal tissues, resulting in increased secretions, backflow to the throat can appear phlegm, generally can be taken to saline rinse nasal cavity can alleviate the coughing situation. There are many causes of phlegm, expectorant drugs are also a lot of specific need to use expectorant drugs need to be combined with the condition, it is recommended to consult a doctor in a timely manner to clarify the treatment given after the use of medication.