Fasenra
Fasenra (benralizumab) is a prescription biologic medication used as an add-on maintenance therapy for patients aged 12 and older with severe eosinophilic asthma. It is administered by subcutaneous injection and helps reduce asthma exacerbations by targeting and reducing eosinophils, a type of white blood cell that plays a key role in airway inflammation.
Fasenra is an injectable biologic used to treat severe eosinophilic asthma by reducing airway inflammation.
Key facts at a glance
- RxNorm
- 1989105
- Generic
- Fasenra
- Class
- brand-name
- Brands
- —
- Availability
- rx
- Lactation
- unknown
- Routes
- —
- Forms
- —
- Regions
- US, EU, CN, JP
- Monitoring
- —
This page is for informational purposes only.
Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.
Severe eosinophilic asthma in patients 12 years and older as an add-on maintenance therapy when asthma is not adequately controlled with inhaled corticosteroids plus long-acting beta agonists
Fasenra is a monoclonal antibody that binds to the interleukin-5 (IL-5) receptor on eosinophils, marking them for destruction and thereby reducing eosinophilic inflammation in the airways
Administered by subcutaneous injection every 4 weeks for the first 3 doses, then every 8 weeks thereafter. Not for acute bronchospasm or status asthmaticus. Common side effects may include headache and pharyngitis. Patients should not stop other asthma medications without consulting their healthcare provider.
Official drug label
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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.
This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.
If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.
Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy