Benylin dry cough is for the treatment and relief of dry, irritating coughs caused by infections or allergies, including flu, cold, dust allergy. Benylin syrup contains the active ingredient dextromethorphan which is a cough suppressant and works by blocking the brains signal to cough. The syrup also contains levomenthol, a decongestant that aids in the reduction of congestion in the nose and chest. Benylin dry cough also includes diphenhydramine which works to relieve runny noses.

Benylin dry cough syrup soothes throat inflammation caused by persistent coughing and provides long lasting effective relief from a dry cough, it can be taken with or without food.