Benylin Wet Cough Mucus Relief is a 200ml proprietary remedy for the relief of wet coughs. The product’s key ingredient, ammonium chloride, helps thin the mucous and loosen phlegm in the throat, making it easier to expel. Benylin Wet Cough Mucus Relief comes in a handy spray bottle which makes it easy to administer. It also has a pleasant-tasting grape flavour which makes taking it more tolerable for children.