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N- acetyl - L - cysteine (NAC), it through the decomposition, nucleic acid, protein complex, purulent sputum in the composition and other mucous from thick to thin and mucus secretion and play a role of strong mucous dissolves. In addition, the product through a can interact directly with the oxidation of electrophilic group of free sulfhydryl (nucleophilic - SH) and antioxidant effect directly.

　　Use

　　Antioxidants and mucopolysaccharide reagent. Reports can prevent nerve cell apoptosis, but smooth muscle cells induced apoptosis, prevent HIV replication. May be the microsomal glutathione transferase substrates.

　　Used as phlegm soluble drugs. Applies to a lot of phlegm obstruction caused by respiratory obstruction. In addition can also be used for the detoxification of acetaminophen poisoning. Because this has the special fetid odor, easy cause nausea and vomiting. Can irritate the respiratory tract, can cause bronchospasm, general and isopropyl adrenaline bronchodilator share, at the same time cooperate with sputum suction row of phlegm. Unfavorable and metals (such as Fe, Cu), rubber, antioxidant and other contacts. Unfavorable with antibiotics such as penicillin, head cell rhzomorph, tetracycline and, lest reduce its antibacterial effect. Bronchial asthma is careful.