Acetylcysteine effervescent tablets are effective for the symptoms of secretion of large amounts of thick sputum in chronic respiratory diseases such as chronic obstructive pulmonary disease, chronic bronchitis, emphysema and other chronic respiratory diseases. Acetylcysteine effervescent tablets is a mucolytic agent, through the decomposition of mucin complexes, nucleic acids, the purulent components of sputum and other mucus and mucus secretions from viscous to thin and exert a strong mucolytic effect, so that the patient’s sputum thinner, so that it is easy to cough out the sputum when coughing. This drug is contraindicated in people who are allergic to acetylcysteine and in patients suffering from phenylketonuria. Patients suffering from bronchial asthma should be closely monitored during treatment and treatment should be terminated immediately if bronchospasm occurs. Adverse reactions such as nausea, vomiting, diarrhea, tinnitus, etc. may occasionally occur in some people during use, and can generally be relieved after stopping the drug. If you need to take acetylcysteine effervescent tablets should be used under the guidance of a doctor to avoid adverse reactions.