Which type of inhaler provides immediate relief for acute asthma symptoms?

Short-acting beta-agonists are the medication class designed for rapid relief of acute asthma symptoms. They work by relaxing the muscles around the airways, leading to bronchodilation, which allows for easier airflow and immediate alleviation of wheezing, coughing, and shortness of breath that occurs during an asthma attack. Medications in this class, such as albuterol, can be administered via inhalers and typically start to take effect within minutes, making them essential for emergency situations where quick symptom relief is necessary.

In contrast, long-acting beta-agonists are intended for regular control and prevention of asthma symptoms rather than immediate relief, as they take longer to onset and are not suitable for use during acute episodes. Anticholinergic agents, while effective in relieving bronchospasm, are often used in conjunction with other medications for maintenance rather than immediate rescue. Corticosteroids are primarily used for long-term control and to reduce inflammation in the airways; however, they do not provide immediate relief of acute symptoms and are usually administered as maintenance therapy.