Benylin Chesty Cough Non Drowsy provides soothing relief and has a deep penetrating effect on chesty coughs. BENYLIN Chesty Coughs Non-Drowsy works deep down in the chest to help loosen phlegm, so that when you cough, you can actually cough some of the phlegm up. This helps clear bronchial congestion and being non drowsey helps you to get on with your day. The active ingredient guaifenesin helps thin and loosen phlegm in your chest, making it easier to cough up. The active ingredient levomenthol also helps to relieve congestion to make it easier to breathe. Key features of BENYLIN Chesty Coughs Non-Drowsy Non-Drowsy Suitable for Adults and children aged 12 years and over Helps to loosen phlegm Relieves congestion