Which side effect is commonly associated with the use of beta-2 agonists?

Beta-2 agonists, such as albuterol and salmeterol, are commonly prescribed for the management of asthma and chronic obstructive pulmonary disease (COPD). One of the well-documented side effects of these medications is tremor. This occurs because beta-2 agonists stimulate receptors in the skeletal muscle, leading to increased muscle contractions and a resultant tremulous effect.

While beta-2 agonists are primarily intended to relax bronchial smooth muscle and improve airflow in the lungs, their systemic effects can sometimes lead to muscle tremors, particularly at higher doses. This side effect is often considered benign but can be bothersome for some patients.

In contrast, drowsiness is more commonly associated with medications that have central nervous system depressant effects, and beta-2 agonists typically do not produce such sedation. Dry mouth is generally linked with anticholinergic medications rather than beta-2 agonists. Weight gain is not a typical side effect as beta-2 agonists, in fact, might have a slight appetite-suppressing effect rather than causing weight gain.