Objective. To evaluate the efficacy and safety of hopantenic acid (Pantogam) in the complex treatment of prematurely born infants, aged 6—12 months, with psychomotor developmental delay due to hypoxic-ischemic encephalopathy. Material and methods. Eighty-seven patients were randomized into two groups: 44 received standardized treatment and pantogam for two months, 43 standardized treatment and placebo. Pantogam (syrup 100 mg/ml) or placebo were prescribed orally 15—30 minutes after feeding, twice a day, in a daily dosage of 30—50 mg/kg body weight. The assessment of psychomotor development from birth to two years was performed with the Griffiths Mental Development Scales (GMDS-ER) twice (before and after completion of therapy). Results. The response to two month therapy determined as the reduction of developmental delay for more than 6% of the initial GMDS-ER general quotient (GQ) score was significantly better in the group I after pantogam treatment (63.6% of patients) compared to group II (36.4%, p=0.021). Group I demonstrated the significant decrease of the developmental delay in two domains («Personal-Social» and «Performance») and a trend to overcome the delay in three other domains: «Locomotor», «Hearing and Speech», «Eye and Hand Coordination». The improvement after pantogam treatment was more obvious in the subgroup of infants born late preterm (gestational age 34—36 weeks) compared to infants born moderate preterm (gestational age 32—33 weeks). The favorable safety profile of pantogam was confirmed, comparable to that of placebo. Conclusion. Pantogam is efficient and safe medication in the complex treatment of psychomotor developmental delay in preterm infants, aged 6—12 months.