Salmeterol is a medication primarily used as a long-acting bronchodilator. It helps to relax and open air passages in the lungs, making it easier to breathe for individuals with conditions like asthma or chronic obstructive pulmonary disease (COPD). Salmeterol is typically used as part of a regular treatment plan and is often combined with other medications, such as inhaled corticosteroids, to manage symptoms and prevent asthma attacks.

It's important to note that salmeterol is not intended for the relief of sudden asthma symptoms or acute bronchospasm. Instead, it is used for maintenance therapy to help control breathing difficulties over time. As with any medication, it is essential to follow the prescribed dosage and consult with a healthcare provider to ensure it is suitable for your specific needs.