A craniocerebral trauma was modelled in experiments on one-month-old rats. Oxidative phosphorylation in the brain mitochondria was studied by polarography 1, 4, 7 days and 4 weeks after the trauma. In the posttraumatic period the animals received piracetam (1 g/kg), picamilon (500 mg/kg), pyriditol (100 mg/kg), pantogam (160 mg/kg), ACTH (5-10) (0.1 mg/kg), nooglutyl (25 mg/kg), and GVS (0.5 mg/kg). It was found that piracetam, picamilon, and nooglutyl have a protective effect on the function of the brain mitochondria during the course of a craniocerebral trauma. Nooglutyl surpasses all the other drugs in its influence on the effectiveness of oxidative phosphorylation of mitochondria in immature rats in the posttraumatic period.