Bronchodilators are pharmaceutical agents designed to relax and widen the airways in the lungs, making it easier to breathe. They are commonly used to manage respiratory conditions such as asthma and chronic obstructive pulmonary disease (COPD). Bronchodilators are classified into two main types: short-acting, for quick relief during asthma attacks, and long-acting, for ongoing control of symptoms. Their effectiveness in improving airflow and reducing wheezing makes them essential in respiratory care.