Physicians may prescribe the nasal spray Astepro, a brand name of an antihistamine known generically as azelastine, to help control allergies. Histamine release is triggered by irritants such as pollen, dust or other perceived foreign materials. This causes symptoms such as runny nose, itching and sneezing. Drugs.com reports that Astepro can help prevent these allergic responses. Some side effects have been associated with use of this medication.
Bitter Taste
Astepro can cause a bitterness in the mouth upon initial use, according to MayoClinic.com. This unpleasant taste generally stops occurring as the person's body grows accustomed to the medication. This side effect is a non-serious problem requiring medical attention only if the bitterness is severe or persistent.
Sneezing
Astepro also can cause sneezing upon initial use. This may occur as a rapid succession of violent sneezes. Drugs.com states this type of attack has a sudden onset. A doctor should be contacted about sneezing attacks if they persist or are severe. Otherwise, sneezing classifies as non-serious side effect of Astepro.
Fatigue
At first use of Astepro and for a short time thereafter, the user may feel overly exhausted or fatigued. She may experience bodily weakness that normally would occur with strenuous work or exercise. As the body adjusts to Astepro, fatigue should diminish. A doctor should be consulted if this symptom persists.
Nasal Problems
Mild stinging and burning in the nasal passages is a side effect of Astepro use, Drugs.com reports. Nosebleeds may also be experienced. Drugs.com indicates these problems should rectify themselves shortly in most patients using Astepro.
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