Beta-agonists are a class of medications that stimulate beta-adrenergic receptors in the body. These receptors are part of the sympathetic nervous system, which helps regulate various bodily functions, including heart rate and airway dilation. Beta-agonists are commonly used to treat conditions like asthma and chronic obstructive pulmonary disease (COPD) by relaxing the muscles around the airways, making it easier to breathe. There are two main types of beta-agonists: short-acting and long-acting. Short-acting beta-agonists provide quick relief from asthma symptoms, while long-acting beta-agonists are used for ongoing control of respiratory conditions. Both types can be essential in managing respiratory health and improving quality of life for patients.