Results are presented of a protocol of hyposensitizing treatment per os in 19 cases of food allergy (allergy to milk in 8, to egg in 8, to fish in 2, and to orange in one). Treatment, performed in the out-patients service, was successful in 14 out of the 15 patients who followed it correctly (i.e. 93.3% of cases). Treatment lasted between 3 and 12 months.