Seretide Accuhaler 50mcg/250mcg is a combination medication containing fluticasone propionate and salmeterol. Fluticasone propionate is a corticosteroid that reduces inflammation in the airways, while salmeterol is a long-acting beta agonist that helps to relax the muscles around the airways. This medication is classified as a maintenance therapy for asthma and chronic obstructive pulmonary disease (COPD). It works by reducing airway inflammation and bronchoconstriction, thereby improving breathing over time. Seretide Accuhaler is not meant for acute relief and should be used regularly as prescribed by a healthcare provider.