Acetylcysteine is mainly used for respiratory diseases, the exact time of onset of action varies from person to person, generally speaking, the onset of action is 3~5 days.
Acetylcysteine, including tablets, granules, effervescent tablets and other types, belongs to the expectorant drugs, can be used to treat respiratory diseases with excessive thick mucus secretion, such as acute bronchitis, emphysema, bronchiectasis and other diseases, the specific onset of action time varies from person to person, generally speaking, the onset of action time is 3~5 days.
For injectable solutions, the average elimination terminal half-life of acetylcysteine is 5.6 hours; oral solutions reach peak plasma concentrations in 2 to 3 hours and last for 24 hours.
Acetylcysteine should be contraindicated in patients who are hypersensitive to acetylcysteine or its components, and should be contraindicated in patients with bronchial asthma and gastritis. Acetylcysteine should be used under the supervision of a doctor, pay attention to adverse reactions such as nausea, vomiting, dizziness, fever, allergy and so on.