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Astelin Side Effects

Generic Name: azelastine nasal

Note: This document contains side effect information about azelastine nasal. Some of the dosage forms listed on this page may not apply to the brand name Astelin.

For the Consumer

Applies to azelastine nasal: nasal spray

Along with its needed effects, azelastine nasal (the active ingredient contained in Astelin) may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.

Check with your doctor immediately if any of the following side effects occur while taking azelastine nasal:

  • Blood in the urine
  • blurred vision or other change in vision
  • cough
  • eye pain
  • eye redness
  • hives, itching, or skin rash
  • rapid heartbeat
  • sores in the mouth or on the lips
  • tightness in the chest
  • troubled breathing

Some side effects of azelastine nasal may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:

More common
  • Bitter taste in the mouth
  • drowsiness or sleepiness
Less common
  • Bloody mucus or unexplained nosebleeds
  • burning inside the nose
  • dizziness
  • dryness of the mouth
  • headache
  • muscle aches or pain
  • nausea
  • sore throat
  • sudden outbursts of sneezing
  • unusual tiredness or weakness
  • weight gain

For Healthcare Professionals

Applies to azelastine nasal: nasal spray


The most commonly reported adverse reactions were headache, bitter taste, sinusitis, and epistaxis.[Ref]


Common (1% to 10%): Epistaxis, nasal discomfort, upper respiratory infection, sneezing, nasal mucosal ulceration, sinusitis
Postmarketing reports: Nasal burning, throat irritation, dyspnea, paroxysmal sneezing[Ref]


Postmarketing reports: Anaphylactoid reaction[Ref]


Postmarketing reports: Application site irritation[Ref]

Nervous system

Very common (10% or more): Bitter taste (10%)
Common (1% to 10%): Headache, somnolence, dysgeusia
Postmarketing reports: Sweet taste, confusion, dizziness, nervousness, paraesthesia, parosmia, involuntary muscle contractions, disturbance or loss of sense of smell and/or taste[Ref]


Postmarketing reports: Atrial fibrillation, chest pain, hypertension, palpitations, tachycardia[Ref]


Very rare (less than 0.01%): Urticaria, pruritus, rash[Ref]


Postmarketing reports: Abdominal pain, nausea[Ref]


Common (1% to 10%): Fatigue
Postmarketing reports: Facial edema, tolerance[Ref]


Postmarketing reports: Blurred vision, xerophthalmia[Ref]


Postmarketing reports: Urinary retention[Ref]


1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0

2. "Product Information. Astepro (azelastine nasal)." Meda Pharmaceuticals, Somerset, NJ.

3. "Product Information. Astelin (azelastine)." Carter Products, Cranbury, NJ.

Some side effects of Astelin may not be reported. Always consult your doctor or healthcare specialist for medical advice. You may also report side effects to the FDA.

Disclaimer: Every effort has been made to ensure that the information provided is accurate, up-to-date and complete, but no guarantee is made to that effect. In addition, the drug information contained herein may be time sensitive and should not be utilized as a reference resource beyond the date hereof. This material does not endorse drugs, diagnose patients, or recommend therapy. This information is a reference resource designed as supplement to, and not a substitute for, the expertise, skill , knowledge, and judgement of healthcare practitioners in patient care. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate safety, effectiveness, or appropriateness for any given patient. does not assume any responsibility for any aspect of healthcare administered with the aid of materials provided. The information contained herein is not intended to cover all possible uses, directions, precautions, warnings, drug interactions, allergic reactions, or adverse effects. If you have questions about the substances you are taking, check with your doctor, nurse, or pharmacist.