Beta-agonists are a class of medications that stimulate beta-adrenergic receptors, leading to smooth muscle relaxation, particularly in the airways, making them essential in treating conditions like asthma and chronic obstructive pulmonary disease (COPD). Their clinical significance lies in their rapid bronchodilator effects, improving respiratory function. A common example is salbutamol, which can cause side effects such as tachycardia or tremors due to systemic beta-adrenergic stimulation.
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