Head-to-head comparisons of medication uses, side effects, warnings, and more.
Key takeaways
Nucala (mepolizumab) and Xolair (omalizumab) are both injectable medications used to treat asthma and nasal polyps, but they belong to different medication classes. Nucala is an interleukin antagonist that blocks interleukin-5 (IL-5) to reduce inflammation, while Xolair is an immunoglobulin E (IgE) monoclonal antibody that targets IgE to reduce the immune system's allergic response. Nucala is also approved for eosinophilic granulomatosis with polyangiitis (EGPA) and hypereosinophilic syndrome (HES), whereas Xolair is used for chronic urticaria and to lower the risk of severe food allergy reactions. Nucala is typically given once a month, while Xolair is administered every 2 or 4 weeks, with dosing based on factors like body weight and IgE levels. Both medications can be self-administered at home with proper training. Common side effects of both medications include headache and injection-site reactions.
Nucala (mepolizumab)
Xolair (omalizumab)
Nucala (mepolizumab)
Xolair (omalizumab)
Summary of Nucala vs. Xolair
Summary for Interleukin antagonist
Prescription only
Nucala (mepolizumab) is an injection that treats certain inflammatory problems. This includes severe asthma in people 6 years and older. It can also treat chronic obstructive pulmonary disease (COPD) and sinus congestion with nasal polyps in adults. The medication works as an interleukin antagonist to lower inflammation. It's injected under the skin once a month. You can inject it on your own with the prefilled autoinjector or syringe. A healthcare professional can also give the injection at a medical office. Side effects include headache and injection site reactions.
Summary for Immunoglobulin E (IgE) monoclonal antibody
Prescription only
Xolair (omalizumab) is a prescription injection used to treat allergic asthma, chronic hives, and nasal polyps. It's also approved to help lower the risk of food allergy reactions if you or your child are accidentally exposed to a trigger. Xolair (omalizumab) is a monoclonal antibody that works by calming your immune system to reduce inflammation and allergy symptoms. You'll get it as a shot under the skin the every 2 or 4 weeks. Common side effects include headache, stomach pain, and dizziness.
Indications of Nucala vs. Xolair
Indications for
•Severe asthma - add-on maintenance for people ages 6 years and older