The purpose of our work was an estimation of anticonvulsive activity of new complexes of xygerm-3 under the conditions of the different models of acute seizure activity. It is discovered that bis(µ-xylarato)dihydrogermanate (IV) with potassium (xygerm-3) has diminished frequency of origin and intensity of the seizure syndrome under these conditions and has increased duration of the latent period of the first seizures (as compared to drug-references carbamazepin, valproic acid and diazepam), the manifestation of which depends on a dose.