Abstract
ABSTRACT Introduction Asthma, a heterogeneous disease, is characterized by chronic airway inflammation and hyperreactivity. β2-adrenoreceptor agonists (β2-agonists) remain pivotal for asthma management. Short-acting β2-agonists (SABAs) result in rapid symptomatic alleviation and bronchospasm prevention. Patients experience significant clinical benefits from therapy with long-acting β2-agonists (LABAs) with efficacy to bronchodilate, and prolonged lung function betterment. Recently discovered β2-agonists with longer half-lives offer once-daily dosing. Areas covered The authors provide a thorough review of the pharmacokinetics, pharmacodynamics, efficacy, tolerability, classification, and safety of β2-agonists through an in-depth review of current literature using these databases: U.S. National Institutes of Health’s National Library of Medicine (NIH/NLM), PubMed Central, and NLM clinical trials. Expert opinion β2- agonists act primarily on airway smooth muscle cells and are quintessential for adequate asthma management. Given their pharmacodynamic and pharmacokinetic properties, SABAs are used as rescue medication. Notably, the current Global Initiative for Asthma (GINA) strategy document recommends using LABA/inhaled corticosteroid combinations both as a daily controller and as a rescue medication. Clinicians should assess this new treatment plan on a per-case basis, making sure to evaluate inhaler adherence and treat modifiable risk factors. The development of next-generation β2- agonists is an exciting research area that could significantly improve patients’ adherence to treatment regimens and, consequently, asthma control and quality of life.
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