A client has a new prescription for dextromethorphan (Robitussin). Which of the following is a therapeutic use for this medication?

Choice A rationaleDextromethorphan is not used for asthma. Asthma treatment typically involves bronchodilators and anti-inflammatory medications.Choice B rationaleDextromethorphan is an antitussive used to suppress coughing. It acts on the cough center in the brain to reduce the urge to cough.Choice C rationaleThis medication is not used for pain reduction. Pain management usually involves analgesics or anti-inflammatory drugs.Choice D rationaleDextromethorphan is not indicated for allergic rhinitis. Allergic rhinitis treatments typically include antihistamines or nasal corticosteroids.