Azelastine is an antihistamine and mast cell stabilizer available as a nasal spray (AstelinĀ®) for hay fever and as eye drops (OptilarĀ®) for allergic conjunctivitis.

Astelin (Azelastine) - Wallace - Official pharmaceutical site for this antihistimine nasal spray.
Meta Description: [ Astelin.com - Official website for Astelin nasal spray, a steroid-free antihistamine prescription spray for nasal congestion, runny nose, sneezing, itchy nose, postnasal drip or other nasal symptoms caused by seasonal allergies pollen and environmental irritants ]
MedlinePlus: Azelastine (Nasal) - Features information about dosage, usage, warnings, and side effects.
Meta Description: [ Azelastine (Nasal) ]