100 children (61 boys and 39 girls) aged between 5 months and 9 years, with diagnosed cow's milk protein intolerance with symptoms of the gastrointestinal tract, skin, respiratory tract and nervous system, were examined. They were treated with an elimination diet (Nutramigen and Prosobee--47% and 53% of children respectively). Total and partial improvements of clinical complaints were observed in 42% and 37% of children respectively.