Beta-agonists work by binding to beta-receptors in the lungs, causing the smooth muscles to relax and the airways to open up. There are two types of beta-agonists: short-acting and long-acting. Short-acting beta-agonists (SABAs) are used for quick relief of asthma symptoms and are usually taken as needed. Long-acting beta-agonists (LABAs) are used to control asthma and COPD symptoms over a longer period and are taken on a regular schedule. Examples of SABAs include albuterol and levalbuterol, while examples of LABAs include salmeterol and formoterol.
Pulmonary Drugs work by blocking the action of acetylcholine, a neurotransmitter that causes smooth muscle contraction. They are used to treat COPD and are usually taken on a regular schedule. There are short-acting and long-acting anticholinergics. Short-acting anticholinergics (SAACs) are used for quick relief of COPD symptoms, while long-acting anticholinergics (LAACs) are used to control symptoms over a longer period. Examples of SAACs include ipratropium, while examples of LAACs include tiotropium and aclidinium.
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