Treating moderate to severe persistent asthma in certain patients who have had a positive allergy skin test and whose symptoms are not controlled by inhaled corticosteroids. Xolair is an anti-immunoglobulin E (IgE) monoclonal antibody. It works by blocking your immune system's natural response to allergens, which can lead to an acute asthma attack. This action on the immune system (specifically, IgE) helps keep your air passages open and, over time, keeps asthma under better control.
Xolair is used to treat asthma caused by allergies, as well as a cases of hives in both adults and children. Xolair works by hindering the immune system's reaction to allergies.