Astelin is a nasal spray containing azelastine, a chemical that blocks histamine in the body, according to Drugs.com. Antihistamine medications are helpful in reducing sneezing, itchy nose, runny nose and any other nasal issues associated with allergies. Astelin can cause side effects, including those that may impact thoughts or your ability to react to stimuli. Drugs.com warns users to avoid alcohol with the use of Astelin as it can increase drowsiness and dizziness.
Common Side Effects
According to eMedTV.com, Astelin is usually well tolerated, but there can be several common side effects that are considered harmless unless they become persistent or overly bothersome. EMedTV.com reports that up to 19.7 of patients will experience a bitter taste in the mouth after using the nasal spray. Up to 14.8 percent of patients will experience a headache, and up to 11.5 percent will experience drowsiness.
Less Common
The medication in the nasal spray can cause nasal burning, runny nose, sore throat, bloody nose or sinus infection, eMedTV.com reports. Other common effects occurring in 2 to 3 percent of patients include dry mouth, nausea, fatigue, dizziness or weight gain. Drugs.com points out that some users may experience other cold-like symptoms or red eyes.
Serious Side Effects
Users should report any serious side effects of Astelin to a doctor. These effects can include excessive drowsiness that makes daily activities difficult. EMedTV.com warns of heart rhythm abnormalities, rapid heartbeat, pounding heartbeat or signs of allergy. An allergic reaction can include hives, itching or unusual swelling. Drugs.com also warns users to report any signs of bronchospasm to a doctor immediately. Signs of this include shortness of breath, chest tightening or wheezing.
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