Question 51

Dextromethorphan, codeine, benzonatate are antitussives.

These medications are classified as antitussives, which are specifically designed to suppress coughing.

A) antihistamines

Antihistamines are primarily used to treat allergic reactions and symptoms like runny nose and sneezing. They do not have a primary function in suppressing cough, making this option incorrect in the context of the question.

B) decongestants

Decongestants are used to relieve nasal congestion by reducing swelling in the nasal passages. They do not target cough suppression, which is the focus of the question regarding the medications listed.

C) bronchodilators

Bronchodilators are medications that relax the muscles of the airways, improving airflow to the lungs. They are not designed to suppress cough, thus making this option incorrect as well.

D) antitussives

Antitussives are specifically formulated to reduce the urge to cough. Dextromethorphan, codeine, and benzonatate all fall under this category, making this the correct answer.

Conclusion

Dextromethorphan, codeine, and benzonatate are correctly identified as antitussives because their primary function is to suppress cough reflexes. The other options—antihistamines, decongestants, and bronchodilators—do not serve this purpose and are therefore not applicable in this context.