Nasonex 24HR Allergy in full prescription strength offers all day and all night relief of your toughest allergy symptoms, including nasal congestion, runny nose, sneezing and itchy nose. This easy-to-use nose spray delivers powerful allergy medicine directly to the site of congestion, targeting your uncomfortable symptoms of hay fever, seasonal, indoor or outdoor allergies. Powered by the active ingredient mometasone furoate, 50 mcg per spray, this glucocorticoid steroid medicine effectively alleviates allergies and congestion without leaving you feeling drowsy or sleepy.