The generic name of Etanercept is Ambroxol Oral Solution, which is an expectorant, and the severe coughing after drinking Ambroxol Oral Solution is mainly considered to be caused by drug allergy, drug functioning, or aggravation of the condition, etc. It is necessary to take mitigating measures according to the specific causes, such as continuing to take the drug, replacing or increasing the medication, and so on. 1. Drug allergy: patients are allergic to the drug, resulting in itching, bronchospasm and other allergic reactions after taking the drug, which leads to severe cough. At this time, the patient should stop taking the medicine in time, and be instructed by the doctor to use other non-allergic expectorant drugs for treatment, such as bromhexine, acetylcysteine and so on. If the allergic symptoms are not relieved after stopping the medication, the patient should also consult a doctor. 2. The role of drugs: Ambrotyl oral solution can reduce the viscosity of sputum, increase the movement of bronchial cilia, through coughing to make the diluted sputum coughing, shorten the duration of coughing, at this time will aggravate the symptoms of coughing. However, this cough aggravation symptoms often disappear after coughing up sputum, is the performance of the drug function, you can continue to take the drug until cured. 3. Exacerbation: Ambrotyl oral solution only has the effect of expectorant, and can not treat the cause of the cough and other symptoms, if there is no treatment for the primary disease, often lead to aggravation of the disease, cough aggravation phenomenon after taking the drug. In this case, treatment should be directed at the original cause of the disease. During the coughing period, it is important to avoid eating spicy, stimulating and cold foods to avoid aggravating the symptoms. In addition, drink plenty of water to promote the discharge of phlegm. If there is any serious discomfort after taking the medicine, you should seek medical treatment promptly.