Benylin Children's Night Coughs Benylin Children's Night Coughs relieves the symptoms of cough & congestion in children aged 6 to 12 years. It can also be used to help relieve runny noses & sneezing associated with hayfever & other allergies. It contains: Diphenhydramine hydrochloride: An antihistamine that helps relieve coughing & dry secretions in the nose & chest. Levomenthol which helps you breathe more easily by relieving congestion. Benylin Children's Night Cough is raspberry flavoured & is sugar & colour free.