Beta agonists or beta adrenergic agonists are a group of drugs used to relieve or control the symptoms of narrowing of the airways caused by asthma or chronic obstructive pulmonary disease. This group of drugs is a type of bronchodilator drug .
Beta agonists work by activating beta-2 cell receptors, so that the muscles in the respiratory tract are more relaxed. That way, the previously narrowed respiratory tract will be wider, the flow of air in and out of the lungs will be smoother, and complaints, such as wheezing or difficulty breathing, can subside.
According to how it works, beta agonists are divided into 3 types, namely fast acting ( short acting beta agonist / SABA), slow acting ( long acting beta agonist / LABA), and very slow acting ( ultra long acting beta agonist / ultra LABA).
Fast-acting beta agonists can be used to treat asthma attacks or sudden narrowing of the airways. While slow acting beta agonists are used to prevent or reduce the frequency of recurrence of asthma or COPD .