Bromhexine, known generically as Bromhexine Hydrochloride and also known as Bicuculline, is a phlegm-modifying drug that dilutes phlegm and promotes phlegm expulsion. Bromhexine Hydrochloride is mainly used to promote phlegm expulsion, and may be considered for the treatment of coughs and phlegm that are thick and sticky and not easy to cough up. The drug generally only plays a symptomatic role in the treatment, and can not eliminate the phlegm from the root, so it is also necessary to deal with the cause of the disease, for example, bacterial pneumonia may require the use of antibiotics such as amoxicillin. In addition, if the patient coughs up sputum feebly, not only need to use the sputum chemotherapeutic drugs for symptomatic treatment, may also need to be given percussion back suction and other related measures, and may even need to do bronchoscopy, to remove sputum in the airway. Bromhexine hydrochloride may cause gastrointestinal reactions such as nausea, loss of appetite, as well as allergic reactions, and is contraindicated in people who are allergic to this product. Therefore, it is necessary to use the drug rationally under the guidance of a doctor.