The drug has a broad spectrum of antagonistic activity against pathogenic and opportunistic microorganisms due to the spore-forming bacteria of a strain especially cultured for poultry. The probiotic stimulates enzymatic processes in the intestine and enhances resistivity of the body due to the specific activity of spore-forming microorganisms recovering useful intestinal microflora. GalliPro® 200 supresses gram positive and gram negative pathogenic bacteria by way of competitive displacement. The drug is intended for the prevention of gastrointestinal diseases in poultry, prevention of consequences of various stress factors, correction of the microflora in the intestines in case of digestion disorders associated with enzyme deficiency.