Roflast 500 mcg is an oral medication containing Roflumilast, a selective phosphodiesterase-4 (PDE4) inhibitor. It is primarily used to manage severe chronic obstructive pulmonary disease (COPD) associated with chronic bronchitis in adults who have a history of frequent exacerbations. By reducing inflammation in the lungs, Roflast helps decrease the frequency of COPD flare-ups and improves breathing in patients.