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Pharmacology · single question

Salmeterol is classified as:

  1. Short-acting ╬▓1 agonist
  2. Long-acting ╬▓2 agonist (LABA)
  3. ╬▓1 blocker
  4. ╬▓2 blocker
Show answer and explanation

Correct answer: B. Long-acting ╬▓2 agonist (LABA)

Salmeterol is a long-acting ╬▓2 agonist used for chronic asthma and COPD. It relaxes bronchial smooth muscle via ╬▓2-receptor-mediated increase in cAMP. It is always prescribed with an inhaled corticosteroid because LABA monotherapy increases asthma mortality. Albuterol is a SABA (short-acting ╬▓2 agonist).

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