Short-acting beta-agonists (SABAs) are medications commonly used to relieve symptoms of respiratory conditions like asthma and chronic obstructive pulmonary disease (COPD). They work by relaxing the muscles around the airways, making it easier to breathe. SABAs are typically used as "rescue" inhalers during asthma attacks or when symptoms worsen. These medications usually take effect within minutes and provide relief for a few hours. Common examples of SABAs include albuterol and levalbuterol. While effective for quick relief, they are not intended for long-term control of respiratory conditions and should be used as directed by a healthcare provider.