BENYLIN ORIGINAL DRY COUGH is clinically proven formula to help relieve your dry, hacking cough. Benylin original has three main main ingredients to help relieve a dry irritating cough:-
Diphenhydramine works to stop allergy reactions in the body.
Dextromethorpan to help suppress dry and painful coughs.
Levomenthol which eases congestion and helps you breathe more easily.