


Fasenra Injection
Written By Dr. Syeda Aafia, MBA, BDS,
Reviewed By Dr. Rajeev Sharma, MBA, MBBS,
Last updated on 24 Aug 2026 | 01:01 AM (IST)
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General Information



Product introduction
Fasenra Injection is given as an injection under the skin (subcutaneous injection). The dose and treatment schedule depend on the condition being treated. It is commonly administered by a doctor or a nurse. To get the most benefit from treatment, attend all scheduled appointments and receive your injections on time.
The most common side effects of Fasenra Injection are headache, pharyngitis (sore throat), hypersensitivity, and flu-like symptoms. They often go away on their own; however, if any of these persist or worsen, consult your doctor.
Before starting Fasenra Injection, tell your doctor if you have a history of allergic reactions to benralizumab or any other medication. Avoid receiving live vaccines while on Fasenra Injection, as the medication may weaken your immune response. If you are pregnant, planning to become pregnant, or breastfeeding, discuss this with your doctor.
Uses of Fasenra Injection
- Treatment of Severe Eosinophilic Asthma
- Treatment of Hypereosinophilic Syndrome (HES)
- Treatment of Eosinophilic Granulomatosis with Polyangiitis (EPGA)
Benefits of Fasenra Injection
Fasenra Injection helps treat severe eosinophilic asthma by reducing eosinophils (a type of white blood cell), which cause airway inflammation, leading to fewer asthma attacks and better symptom control. It improves breathing, reduces the need for rescue inhalers, and minimizes reliance on oral corticosteroids, improving overall quality of life for patients.
Hypereosinophilic syndrome (HES) is a condition in which the body produces too many eosinophils, a type of white blood cell that can damage organs and cause symptoms. Fasenra Injection helps lower the number of eosinophils, which reduces inflammation and helps control the disease. This helps reduce the risk of HES flare-ups and helps improve symptoms.
Eosinophilic granulomatosis with polyangiitis (EGPA) is a condition in which high levels of eosinophils cause inflammation of small blood vessels and can affect organs such as the lungs, skin, nerves, and sinuses. Fasenra Injection helps lower the number of eosinophils, which reduces inflammation and helps control the disease. This can help reduce symptoms and lower the risk of disease flare-ups.
Side effects of Fasenra Injection
- Headache
- Sore throat
- Hypersensitivity
- Flu-like symptoms
How to use Fasenra Injection
How Fasenra Injection works
Quick tips
- It is very important to follow the dosing plan prescribed by your doctor. The first three doses are given every 4 weeks, then every 8 weeks after that. Missing doses can reduce the effectiveness of Fasenra Injection in controlling your asthma.
- Fasenra Injection is often used alongside other asthma treatments, like inhalers or corticosteroids. Do not stop using your other medications unless your doctor tells you to, even if your symptoms improve.
- Keep a diary of your asthma symptoms, including how often you use rescue inhalers and the severity of any flare-ups. This will help your doctor evaluate how well Fasenra Injection is working for you.
- Regular follow-ups with your doctor are essential to monitor your response to Fasenra Injection and adjust your treatment if needed.
- Understanding your type of asthma can help you better manage the condition. Fasenra Injection specifically targets eosinophilic asthma, which is caused by high levels of eosinophils in the body. Learn how this impacts your overall health and asthma management.
- Fasenra Injection reduces asthma attacks, but it may not prevent them entirely. Always have your rescue inhaler on hand and know when to seek emergency medical help if your asthma suddenly worsens.
- Managing asthma also includes maintaining a healthy lifestyle. Regular exercise, avoiding asthma triggers (such as smoking or allergens), and maintaining a balanced diet can complement your treatment and enhance overall lung function.
Safety advice

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Lab tests offered by us
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- FBS (Fasting Blood Sugar)
- Thyroid Profile Total (T3, T4 & TSH)
- HbA1c (Glycosylated Hemoglobin)
- PPBS (Postprandial Blood Sugar)
- Lipid Profile
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- KFT (Kidney Function Test)
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