Guaifenesin diphenhydramine amp levomentholaids restful sleepthins and loosens chest mucusreduces chest congestionwhen you39re suffering from a cough and a cold at night you often have a blocked up nose which can make breathing difficult benylin mucus cough night soothes and relieves your night time cough clears a blocked up nose and aids restful sleepbenylin is a registered trade markdesign is an applied trade mark