22nd August 2023

A 55-year-old male with a history of Asthma-COPD Overlap Syndrome presents with increasing shortness of breath and frequent exacerbations

A 55-year-old male with a history of Asthma-COPD Overlap Syndrome presents with increasing shortness of breath and frequent exacerbations. His current medication includes a combination of inhaled corticosteroids and long-acting beta-agonists.

Which of the following drugs can be added to his regimen for better control?