IgE-mediated food allergy is a global health problem that affects millions of persons and affects every aspect of life for the patient. A promising approach to treat food allergies is the use of oral immunotherapy (OIT). OIT consists in a gradual exposure to increasing amounts of allergen can lead to the majority of subjects tolerating doses of food sufficient to prevent reaction on accidental exposure. Dosages increase over time, as the person becomes desensitized. This technique has been tested on infants to prevent peanut allergies.