Abstract: This patent relates to the obtaining of two pharmaceutical forms--pulvis and ampules of the veterinary medical preparation "Enterogenin". The bioactive ingredient of the preparation is isolated by fractionation of pig small intestinal mucosa cell, extraction with acetic acid, sedimentation with ethyl alcohol, ion-exchange chromatography and diaflo ultrafiltration in the range of 0.5-2 kDa. The bioactivity of the preparation is related to two nucleopeptides: guanosine tripeptide and adenosine heptapeptide. The basic criterion for the biological action of "Enterogenin" pulvis and ampules is the activation of biosynthesis of nucleic acids and specific proteins in the muscles, liver, intestines and spleen.