Which medication is used as a rescue inhaler for asthma?

Albuterol is classified as a short-acting beta-agonist (SABA) and is commonly used as a rescue inhaler for asthma. Its primary function is to provide quick relief from acute asthma symptoms by relaxing the bronchial muscles, which opens up the airways and facilitates easier breathing. It acts rapidly, typically within minutes, making it effective for immediate symptom relief during an asthma attack or exacerbation.

Other medications mentioned serve different purposes in asthma management. Salmeterol is a long-acting beta-agonist (LABA), used for long-term control rather than immediate relief. Montelukast is a leukotriene receptor antagonist, aimed at reducing inflammation and preventing asthma symptoms over time, rather than acting as a rescue medication. Fluticasone is an inhaled corticosteroid that helps to control chronic inflammation associated with asthma but does not provide immediate symptom relief like albuterol does. Thus, albuterol is the preferred medication for quick relief during asthma emergencies.