What is the primary action of an expectorant?

What is the primary action of an expectorant?

• A. Thins the mucus to facilitate expulsion
• B. Suppresses coughing
• C. Decreases airway inflammation
• D. Relieves chest pain

Answer: (A)

An expectorant works by thinning and loosening mucus in the airways, making it easier to cough up and clear from the lungs. This improvement in mucus viscosity helps with productive coughing and easier airway clearance. For example, guaifenesin increases the hydration of respiratory secretions, reducing their thickness so the mucus can be expelled more readily. Expectorants don’t stop coughing, don’t directly reduce inflammation, and don’t relieve chest pain—those effects come from other types of medicines like antitussives, anti-inflammatories, and analgesics.

An expectorant works by thinning and loosening mucus in the airways, making it easier to cough up and clear from the lungs. This improvement in mucus viscosity helps with productive coughing and easier airway clearance. For example, guaifenesin increases the hydration of respiratory secretions, reducing their thickness so the mucus can be expelled more readily. Expectorants don’t stop coughing, don’t directly reduce inflammation, and don’t relieve chest pain—those effects come from other types of medicines like antitussives, anti-inflammatories, and analgesics.