Cystic Fibrosis, Pulmonary Emphysema, Poisoning, Drug-Related Side Effects and Adverse Reactions, Amyloidosis, Bronchitis, Pneumonia, Bronchiectasis, Respiratory Distress Syndrome
Acetylcysteine is used to treat acetaminophen overdose, which is when someone takes too much of the pain reliever acetaminophen, and respiratory conditions with thick mucus, which refers to sticky fluid in the lungs that makes breathing difficult.
Acetylcysteine works by replenishing glutathione, which is a substance that helps the liver process acetaminophen safely, and by breaking down mucus in the lungs, making it easier to breathe.
Acetylcysteine is usually taken as a tablet or liquid. The dosage depends on the condition being treated. For acetaminophen overdose, it's often given in a hospital. For respiratory issues, it's taken orally at home.
Common side effects of acetylcysteine include nausea, which is feeling sick to your stomach, vomiting, which is throwing up, and rash, which is a change in skin color or texture.
Don't use acetylcysteine if you're allergic to it, which means your body reacts badly to it. Serious allergic reactions can cause rash, hives, or swelling that makes breathing difficult. Use caution if you have asthma, which is a condition that affects breathing.