Inhaled medications aim to reduce airway inflammation, improve airflow, and decrease or relieve shortness of breath. They are available as dry powders and as liquids that are delivered in metered doses in spray form. Some people require a short-acting medicine before exercise or during colds. Others require a long-acting medicine, which is usually taken twice daily. Finally, some people require a long-acting medicine once or twice daily, with short-acting medicines in between doses.
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