Which of the following is NOT considered a rescue inhaler?

• A. Albuterol
• B. Levalbuterol
• C. Salmeterol
• D. Terbutaline

Answer: (C)

Rescue inhalers are fast-acting bronchodilators used to relieve acute bronchospasm. They are short-acting beta-2 agonists, providing quick relief within minutes. Albuterol and levalbuterol fit this role because they produce rapid bronchodilation to ease sudden symptoms and don’t rely on prolonged action. Terbutaline is also a short-acting beta-2 agonist used for immediate relief in certain settings.

Salmeterol, in contrast, is a long-acting beta-2 agonist. It has a slower onset and lasts much longer, making it unsuitable for immediate relief. It’s intended for maintenance therapy, often with an inhaled corticosteroid, rather than as a rescue option. So salmeterol is not considered a rescue inhaler.