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Ventolin is classified as a bronchodilator, specifically a short-acting beta-2 adrenergic agonist (SABA). This class of medications works by targeting and stimulating beta-2 adrenergic receptors in the smooth muscle of the airways, leading to relaxation of these muscles. This relaxation results in dilation of the airways, which improves airflow and alleviates symptoms of bronchospasm associated with conditions like asthma and chronic obstructive pulmonary disease (COPD).

Bronchodilators are critical in the management of respiratory conditions, as they provide quick relief from symptoms such as wheezing, cough, and difficulty breathing. Ventolin's rapid onset of action makes it particularly useful for acute situations where immediate relief is required.

Understanding Ventolin's primary category as a bronchodilator allows for a clearer grasp of its therapeutic use and mechanism of action in the context of pulmonary function and respiratory therapy.