What It Is
Salbutamol, also known as albuterol in some countries, belongs to a class of medicines called short-acting beta-2 agonists, commonly used to relieve breathing difficulties.
What It's Used For
Salbutamol is generally used to relieve symptoms of breathing conditions involving narrowed airways, such as asthma and chronic obstructive pulmonary disease, particularly for quick relief of sudden breathing difficulty or wheezing.
How It Works
Salbutamol works by binding to beta-2 receptors located on the smooth muscle surrounding the airways in the lungs. Activating these receptors causes this muscle to relax, which widens the airways and makes breathing easier. Because it's typically inhaled directly, it acts quickly and largely targets the lungs, reaching the airway muscle with less involvement of the rest of the body compared to medicines taken by other routes.
History and Regulatory Status
Salbutamol was developed by a British pharmaceutical company and was introduced for clinical use in the late 1960s. It represented a significant step forward at the time, offering a bronchodilator with a more selective action on the lungs and a lower likelihood of affecting the heart compared to earlier, less targeted bronchodilator medicines. It has since become one of the most widely used medicines for asthma and related breathing conditions worldwide, generally available in inhaler form, and is included on the World Health Organization's list of essential medicines.