When you're suffering from a deep, chesty cough, but still want to get on with your normal daily routine, you can rely on Benylin's formulation to provide an immediate soothing effect and ease irritation caused by coughs, and also works deeper down to loosen phlegm, clear bronchial and nasal congestion, and make your cough more productive. Benylin's deep, penetrating action is clinically proven to relieve powerful chesty coughs without drowsiness. As with all similar medicines, if you are pregnant or breast-feeding, consult your pharmacist or doctor before taking this product. Side effects are rare, however if you get any unusual effects, stop taking the medicine and tell your doctor or pharmacist at once. Please consult your pharmacist or doctor if symptoms persist. If you have any questions, or if you are not sure about anything, ask your doctor or pharmacist. Benylin chesty cough (non-drowsy) is used to help relieve chesty coughs. Guaifenesin is an expectorant which means that it helps to loosen mucus (phlegm) from the lungs and make it easier to cough up. L-menthol, helps you to breathe by easing congestion. Benylin chesty coughs (non-drowsy) also helps to soothe the throat. Benylin chesty cough (non-drowsy) is suitable for most people, but a few people should not take it. Ask yourself the following questions to check whether Benylin chesty cough (non-drowsy) is suitable for you: Have you ever had a reaction to Benylin chesty coughs (non-drowsy) or to any of its ingredients? Do you suffer from a persistent cough such as occurs with asthma or produce a lot of mucus (phlegm)? Do you suffer from liver or kidney disease? Are you pregnant, trying to become pregnant or breast-feeding? If you answer yes to any of these questions, do not take Benylin chesty cough (non-drowsy) before talking to your doctor or pharmacist.