N-acetylcysteine

A mucolytic agent used to reduce the viscosity of secretions of the respiratory tract. The principal method of administration is by aerosol, which in animals requires the use of a face mask or aerosol chamber. Also used parenterally in the treatment of acetaminophen poisoning in cats where it aids in detoxification of the drug and enhances its elimination, and topically in the treatment of collagenase-associated corneal ulcers.