Fudosteine is primarily used as a mucolytic agent, making it effective in treating respiratory conditions characterized by excessive mucus production. It works by breaking down the disulfide bonds in mucus, reducing its viscosity and making it easier to expel. This property makes it particularly useful in managing chronic respiratory diseases such as chronic obstructive pulmonary disease (COPD) and bronchitis. Additionally, it is often prescribed to alleviate symptoms of acute respiratory infections, where thick mucus can obstruct airways and hinder breathing. Fudosteine also exhibits antioxidant properties, which can help protect lung tissue from damage caused by oxidative stress, further supporting its role in respiratory health. Its anti-inflammatory effects contribute to reducing airway inflammation, providing relief in conditions like asthma. Overall, fudosteine is a versatile therapeutic agent that improves respiratory function and enhances the quality of life for patients with mucus-related respiratory disorders.