THE LONG AND SHORT OF IT
Inhalers contain bronchodilators, medications that help relieve asthma symptoms by relaxing the muscles that surround the airways. Once the muscles relax, airways become less constricted; consequently, air can be inhaled and exhaled more easily through these wider openings. There are two types of bronchodilators: short-acting and long-acting. Rescue inhalers are short-acting because their purpose is to work rapidly to relieve symptoms at the onset of an asthma attack. These medications take effect in a few minutes and last for several hours. Long-acting bronchodilators are intended to prevent asthma attacks from occurring by keeping airways open. Long-acting inhalers are often a daily part of long-term management of asthma and may be combined with anti-inflammatory medications that reduce swelling.
P.S. Doctors sometimes suggest that some patients use a rescue inhaler prior to an exercise workout to prevent an asthma attack from happening.
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