Which of the following medications is a Beta2 long-acting bronchodilator?

Formoterol is classified as a long-acting beta2-adrenergic agonist (LABA). These medications are specifically designed to provide prolonged bronchodilation, which is particularly beneficial for individuals with asthma who may need relief from symptoms throughout the day and night. LABAs work by stimulating beta2 receptors in the smooth muscles of the airways, leading to relaxation of these muscles and resulting in widened air passages, making it easier to breathe. This property distinguishes formoterol from other types of medications listed.

Methylprednisolone is a steroid used primarily to reduce inflammation but does not act as a bronchodilator. Ipratropium bromide is an anticholinergic agent that also contributes to bronchodilation but is classified as a short-acting medication rather than a long-acting bronchodilator. Fluticasone is an inhaled corticosteroid, aimed at managing inflammation in the lungs, but it does not provide bronchodilation on its own. Hence, formoterol stands out as the medication that effectively serves as a beta2 long-acting bronchodilator.