1) There is some evidence that orally administered allergens are absorbed. 2) 75% of the children considered oral desensitization to be effective. 3) As judged by bronchial flow resistance after provocation, oral and subcutaneous desensitization appear to be equally effective in reducing bronchial hypersensitivity. The reduction in hypersensitivity after oral desensitization was of the same magnitude as that induced by 1 capsule of DNCG. Reduced bronchial hypersensitivity was also observed in children who had received sympatomatic anti-asthma treatment over periods of 1-3 years.