To prevent and relieve nasal symptoms of hay fever and other nasal allergies: runny/itchy nose, sneezing, allergic stuffy nose. Can prevent nasal allergy symptoms when used before exposure to the cause of your nasal allergies, and will build protection against future symptoms as long as you continue to use Nasalcrom Nasal Spray as directed. Provides original prescription-strength relief of nasal allergy symptoms. Works only in your nose, where nasal allergens attack. It helps to stop the cells in your nose from reacting to pollen, pet dander, and other allergens, so you don't experience nasal allergy symptoms. No drowsiness. No jitters. No 'rebound' nasal congestion. Safe to use with other medicines, including other allergy medicines. Non-habit forming. Safe to use throughout your allergy season. Good for year-round allergies. Safe for children as young as two years old. Easy to administer using the metered spray pump.Active Ingredients: Per Spray: Cromolyn Sodium 5.2 mg