Salbutamol, also known as albuterol, is a fast-acting beta-2 adrenergic receptor agonist used for the relief and prevention of bronchospasm in asthma, COPD, and other airway-obstructive conditions. It works by relaxing the smooth muscles of the airways, providing quick relief from wheezing, shortness of breath, and chest tightness. It is available in inhaler, tablet, and syrup forms.