Nasacort Allergy 24HR is a corticosteroid medication used nasally called Triamcinolone that is available over the counter for treating your symptoms of seasonal and year-round allergies, including nasal congestion, runny/itchy nose, and sneezing. This is suitable for use in adults and children 12 years of age and older that works for a full 24 hours and is non-drowsy, scent-free, and alcohol-free. Once you have used Nasacort Allergy 24 HR intranasally, Triamcinolone works to block many of the chemical responses that occur when you come into contact with an allergen to reduce your inflammation and ease the allergy symptoms.