Fasenra Side Effects

Generic name: benralizumab

Medically reviewed by Philip Thornton, DipPharm. Last updated on Jun 18, 2023.

Note: This document provides detailed information about Fasenra Side Effects associated with benralizumab. Some dosage forms listed on this page may not apply specifically to the brand name Fasenra.

Applies to benralizumab: subcutaneous solution.

Precautions

It is very important that your doctor check your progress at regular visits to make sure that this medicine is working properly and to check for unwanted effects.

This medicine may cause serious allergic reactions, including anaphylaxis and angioedema. These can be life-threatening and require immediate medical attention. Tell your doctor right away if you have a rash, itching, hoarseness, trouble breathing, trouble swallowing, or any swelling of your hands, face, or mouth after using this medicine.

This medicine will not stop an asthma attack that has already started. Your doctor may prescribe another medicine for you to use in case of an asthma attack.

If you use a corticosteroid medicine (inhaled or taken by mouth) to control your asthma, keep using it unless your doctor tells you otherwise.

Common side effects of Fasenra

Some side effects of benralizumab 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:

Serious side effects of Fasenra

Along with its needed effects, benralizumab (the active ingredient contained in Fasenra) 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 benralizumab:

For healthcare professionals

Applies to benralizumab: subcutaneous solution.

Hypersensitivity adverse events

• Frequency not reported: Anaphylaxis, angioedema^[Ref]

Immunologic

• Frequency not reported: Immunogenicity^[Ref]

Local

• Common (1% to 10%): Injection site reactions (e.g., pain, erythema, pruritus, papule)^[Ref]

Respiratory

• Common (1% to 10%): Pharyngitis (bacterial, viral, or streptococcal), cough^[Ref]

Other

• Common (1% to 10%): Pyrexia^[Ref]

Nervous system

• Common (1% to 10%): Headache^[Ref]

Dermatologic

• Common (1% to 10%): Urticaria, rash^[Ref]

See also:

Frequently asked questions

• What are monoclonal antibodies?
• Does Fasenra weaken your immune system?
• How long does Fasenra take to work?
• What is Fasenra used for and how does it work?
• What eosinophil count is needed for Fasenra?
• What type of asthma is Fasenra used to treat?

Further information

Fasenra side effects can vary depending on the individual. Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

Note: Medication side effects may be underreported. If you are experiencing side effects that are not listed, submit a report to the FDA by following this guide.

Medical Disclaimer