Pharmacology · single question
What is the mechanism of action of albuterol?
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Correct answer: C. ╬▓2 agonist
Albuterol is a short-acting ╬▓2 agonist (SABA) used as rescue therapy for acute bronchospasm. ╬▓2-receptor stimulation raises intracellular cAMP, relaxing bronchial smooth muscle within minutes. Side effects include tremor and tachycardia (due to residual ╬▓1 activity at high doses).