Astelin , also known as azelastine, is an antihistamine used to treat hay fever and symptoms of allergies, such as sneezing, stuffy, itchy and running nose.
Astelin comes as a solution spray for nasal use only. Normally, the spray is applied in each nostril two times a day, or as suggested by your doctor. By pressing the pump and releasing the mist evenly into your nose, it blocks the effect of histamine on certain cells.
The most common side effects of Astelin include nasal burning, bitter taste in the mouth or drowsiness. They may go away during treatment.
Astelin may be also used for other medical conditions, as prescribed by your doctor.