➤ How do fast-acting beta2-agonists differ from long-acting beta2-agonists?
Fast-acting beta2-agonists (SABA) act within minutes to relieve acute bronchospasm and are used as rescue inhalers. Long-acting beta2-agonists (LABA) provide symptom control for 12–24 hours and must be combined with inhaled corticosteroids for safety. Use SABA for immediate relief and LABA only as a maintenance add-on.
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