N-acetylcysteine (NAC) is a powerful antioxidant and a precursor to glutathione, a key molecule in detoxification and reducing oxidative stress. Its primary mechanism of action involves replenishing glutathione levels, neutralizing free radicals, and breaking down excess mucus in the respiratory system.
NAC is used to treat a variety of conditions, including chronic respiratory diseases (like bronchitis), acetaminophen overdose (to prevent liver damage), and as a supplement to improve insulin sensitivity in conditions like polycystic ovary syndrome (PCOS).