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What is Xolair?

Xolair (omalizumab) is a prescription medication used to treat allergic asthma and chronic idiopathic urticaria (CIU). It is used for patients suffering from allergic asthma when their symptoms cannot be managed by inhaled corticosteroids, and in patients with CIU when H1 antihistamine treatment is ineffective.

How does Xolair work?

Xolair is a monoclonal antibody that targets and blocks immunoglobulin E (IgE), a protein that mediates the severe allergic reaction in patients with allergic asthma. It is administered by a subcutaneous injection in the doctor’s office every two to four weeks.