What does Xolair do?

Treatment with the drug Xolair has been vital in the study I'm participating in, as it will allow me to finish the study (and reach 4000 milligrams) in just six months as opposed to years. 

Xolair is considered an investigational drug (meaning it hasn't been approved by the FDA) for the treatment of food allergies in children and adults. 

Xolair itself is an antibody that helps to block IgE, which is an allergy antibody produced by the human body's immune system and is responsible for allergies and allergic symptoms.