What is Xolair?

Xolair is an injectable prescription medicine used to reduce the severity of allergic reactions in people aged 1 year and older.

Xolair is an injectable prescription medicine used to reduce the severity of allergic reactions in people aged 1 year and older. It is an anti-IgE antibody that works by binding to serum IgE (immunoglobulin E) and IgE receptors on cells.