Which are examples of long acting beta 2 agonists?

The identification of long-acting beta-2 agonists is crucial for the management of conditions like asthma and chronic obstructive pulmonary disease (COPD). Salmeterol and Formoterol are both classified as long-acting beta-2 agonists because their pharmacological action lasts for an extended period, typically ranging from 12 hours to 24 hours, making them suitable for maintenance therapy in respiratory conditions.

Salmeterol works by providing prolonged bronchodilation and is beneficial in preventing asthma attacks when used regularly. Formoterol, on the other hand, not only has a long duration of action but also has a rapid onset, making it effective for both maintenance and as a rescue medication in some cases. This profile allows these medications to improve airflow and reduce the frequency of symptom exacerbations over time.

In contrast, the other options contain medications that are either short-acting beta-2 agonists or anticholinergic agents, which do not fit the criteria of long-acting beta-2 agonists. Understanding the differences between these drug classes is essential for effective pharmacological management in patients with respiratory issues.