Used to treat respiratory conditions with excessive mucus production, such as chronic bronchitis, bronchiectasis, and COPD. It works by reducing the viscosity of mucus, making it easier to cough up and clear from the airways. This helps improve breathing and reduces the frequency of coughing. Often prescribed when thick, sticky mucus is difficult to expel, especially during acute exacerbations of chronic lung diseases. Also supports better lung function by promoting airway clearance and may help prevent secondary infections caused by mucus buildup.