What it does: BENYLIN® Mucus Cough Max Menthol is a max strength formula that you can really feel. It works on your chest mucus, making it easier to cough up, whilst the menthol has an invigorating taste. How it works: Active ingredient guaifenesin helps to thin and loosen mucus in your chest, making it easier to cough up. What is a mucus cough? Mucus coughs are caused by a build-up of mucus in the lungs and on the chest. The cough mechanism kicks in to try and get rid of this excess mucus.
