Daxas, with the active ingredient roflumilast, is a type of medication known as a phosphodiesterase-4 (PDE4) inhibitor. It is primarily used in the treatment of severe chronic obstructive pulmonary disease (COPD), including chronic bronchitis and emphysema, particularly in cases where symptoms are not adequately controlled by bronchodilators alone. Daxas works by reducing inflammation in the lungs, leading to a decrease in the frequency of flare-ups or exacerbations associated with the disease. It is administered orally, usually in the form of tablets. As with any medication, it is important for patients to follow their healthcare provider's instructions when taking Daxas to minimize potential side effects and ensure its effectiveness.