XOLAIR Injection 

XOLAIR Injection is not used to treat other forms of urticaria. XOLAIR is the first monoclonal antibody approved to treat CIU. Monoclonal antibodies are made to be similar to natural antibodies found in the human body. XOLAIR is a “biologic.”

What are the possible side effects of omalizumab (Xolair)?

Some people using omalizumab have had a severe, life-threatening allergic reaction to this medication, either right after the injection or hours later. Allergic reaction may occur even after using the medication regularly for a year or longer.

Get emergency medical help if you have any of these signs of an allergic reaction:

wheezing, tightness in your chest, trouble breathing;

hives or skin rash;

feeling anxious or light-headed, fainting;

warmth or tingling under your skin; or

swelling of your face, lips, tongue, or…