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Astelin Patient Information Including Side Effects

Brand Names: Astelin, Astepro

Generic Name: azelastine nasal (Pronunciation: a ZEL uh steen)

What is azelastine nasal (Astelin)?

Azelastine is an antihistamine. It blocks the effects of the chemical histamine in your body.

Azelastine prevents sneezing, itching, runny nose, and other nasal symptoms of allergies.

Azelastine nasal may also be used for other purposes not listed in this medication guide.

Astelin Nasal

What are the possible side effects of azelastine nasal (Astelin)?

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Stop using azelastine and call your doctor at once if you have any of these serious side effects:

  • bronchospasm (shortness of breath, tightness in chest, wheezing); or
  • fast or uneven heartbeats.

Less serious side effects may include:

  • a bitter taste in your mouth;
  • headache;
  • drowsiness or dizziness;
  • dry mouth, sore throat;
  • burning in your nose;
  • weight gain;
  • nausea;
  • nosebleed;
  • cough, sneezing, runny nose, cold symptoms; or
  • eye redness.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the Astelin (azelastine hydrochloride) Side Effects Center for a complete guide to possible side effects

What is the most important information I should know about azelastine nasal (Astelin)?

Azelastine can cause side effects that may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be awake and alert.

Avoid drinking alcohol. It can increase drowsiness and dizziness caused by azelastine.

Before using azelastine nasal, tell your doctor if you regularly use other medicines that make you sleepy (such as cold or allergy medicine, narcotic pain medicine, sleeping pills, muscle relaxers, and medicine for seizures, depression, or anxiety). They can add to sleepiness caused by azelastine nasal.

Talk with your doctor if your allergy symptoms do not improve or if they get worse.

Side Effects Centers

Astelin - User Reviews

Astelin User Reviews

Now you can gain knowledge and insight about a drug treatment with Patient Discussions.

Here is a collection of user reviews for the medication Astelin sorted by most helpful. Patient Discussions FAQs

Report Problems to the Food and Drug Administration


You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.

Allergies & Asthma

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