What is the duration of Albuterol's action?

• A. 2 to 3 hours
• B. 4 to 6 hours
• C. 8 to 12 hours
• D. 1 to 2 hours

Answer: (B)

Albuterol is a short-acting beta-2 agonist, so its bronchodilator effect is rapid but relatively brief. After inhalation, it relaxes airway smooth muscle quickly, and the relief typically lasts about 4 to 6 hours. This duration fits its role in acute relief, with dosing commonly every 4 to 6 hours as needed. Shorter durations like 1–2 hours or 2–3 hours would be inconsistent with its pharmacology, while a longer duration such as 8–12 hours belongs to long-acting agents, not albuterol. So, the best interval is 4 to 6 hours.