Xolair (omalizumab) is an antibody that helps decrease allergic responses in the body.
Xolair is used to treat moderate to severe asthma that is caused by allergies in adults and children who are at least 6 years old. Xolair is used when asthma symptoms are not controlled by asthma inhaled steroid medicine. It is not a rescue medicine for treating an asthma attack.
Xolair is used to treat chronic hives (idiopathic urticaria) in adults and children who are at least 12 years old, after antihistamines have been tried without success.
Xolair is also used to treat nasal polyps in people 18 years of age and older when medicines called nasal corticosteroids have not worked well.
