Dextromethorphan hydrobromide (Robitussin, Sucrets) is used as what medication?

Dextromethorphan hydrobromide (Robitussin, Sucrets) is used as what medication?

• A. Expectorant
• B. Bronchodilator
• C. Antitussive (cough suppressant)
• D. Decongestant

Answer: (C)

Dextromethorphan hydrobromide is used as an antitussive (cough suppressant). It acts centrally in the brain, specifically on the medullary cough center, to raise the threshold for triggering a cough and reduce the urge to cough. It doesn’t loosen or thin mucus (that would be an expectorant), nor does it open airways (bronchodilator) or reduce nasal congestion (decongestant). So the best fit is cough suppression. In some formulas it’s combined with an expectorant like guaifenesin, but the primary action of dextromethorphan is to suppress coughing. Note that at higher doses it can cause dizziness or dissociation and has abuse potential.

Dextromethorphan hydrobromide is used as an antitussive (cough suppressant). It acts centrally in the brain, specifically on the medullary cough center, to raise the threshold for triggering a cough and reduce the urge to cough. It doesn’t loosen or thin mucus (that would be an expectorant), nor does it open airways (bronchodilator) or reduce nasal congestion (decongestant). So the best fit is cough suppression. In some formulas it’s combined with an expectorant like guaifenesin, but the primary action of dextromethorphan is to suppress coughing. Note that at higher doses it can cause dizziness or dissociation and has abuse potential.