Developmental dysphasia (alalia) represents a severe speech and language disorder in children. To assess the efficacy of treatment with cerebrolysin, we have examined 60 children with developmental dysphasia, aged from 3 to 4 years. Group 1 (30 patients) received cerebrolysin (monotherapy, daily dosage 0.1 ml/kg, in the morning hours, on each other day, i.m., 30 injections in total) during 2 months. Group 2 (controls, 30 patients) did not receive pharmacotherapy. A significant improvement of expressive, impressive speech and speech attention was observed in group 1 after the treatment. The active vocabulary increased by a factor of 3.5 and phrases number in colloquial speech by a factor of 5, versus 1.5 in the control group. According to parents' questionnaires, the treatment resulted in the decrease of psychasthenic, psychosomatic problems, motor clumsiness and hyperactivity along with the improvement of attention, emotional control and behavioral measures. The positive effect of cerebrolysin on the motor development was demonstrated by the assessment of motor milestones.