Camostat mesilate is primarily used as a protease inhibitor, showing significant application in the treatment of pancreatitis. It works by inhibiting the activity of proteolytic enzymes that can exacerbate pancreatic inflammation, thereby reducing symptoms and improving patient outcomes. Additionally, it has been explored for its antiviral properties, particularly in blocking the entry of certain viruses into host cells, which is crucial in managing infections like SARS-CoV-2. Its ability to modulate enzyme activity also makes it a candidate for research in other inflammatory and viral diseases.