Acetylcysteine is a mucolytic (myoo-koe-LIT-ik) drug that breaks down mucus, the substance
that lubricates many parts of the body such as the mouth, throat, and lungs.
Acetylcysteine is used to thin the mucus in people with certain lung conditions such as cystic
fibrosis, emphysema, bronchitis, tuberculosis. Acetylcysteine is also used during surgery or anesthesia,
and to prepare the throat or lungs for a medical test.
Acetylcysteine may also be used for purposes other than those listed in this medication guide.