Serevent is a brand name for the medication salmeterol, which is a long-acting beta2-adrenergic agonist (LABA) used in the management of asthma and chronic obstructive pulmonary disease (COPD). It works by relaxing the muscles in the airways, thereby opening them and making it easier to breathe. Serevent is typically prescribed as a maintenance treatment rather than for immediate relief of acute symptoms. It is often used in combination with other medications, such as inhaled corticosteroids, to provide better control of asthma and COPD symptoms. Serevent is administered through inhalation, allowing the medication to act directly in the lungs for a targeted effect.