What is Advair / Seretide? Seretide contains two types of drugs: Fluticasone Propionate (a synthetic corticosteroid) and Salmeterol Xinafoate (a long-acting bronchodilator). They work in different ways in the lungs to improve lung function and symptoms in patients with asthma. Fluticasone Propionate is used to reduce airway inflammation, while Salmeterol helps prevent bronchospasms and airway constriction, making breathing easier.











