Aller-Cort is a nasal spray for 24-hour relief of allergy symptoms in adults and children ages 2 years and older. The active ingredient in Aller-Cort is triamcinolone acetonide (glucocorticoid), 55 mcg per spray. Aller-Cort temporarily relieves symptoms of hay fever or other upper respiratory allergies like: Nasal congestion Runny nose Sneezing Itchy nose Triamcinolone acetonide is a steroid medicine known as a glucocorticoid.