At the first stage, clinical and pathological material is selected from the enterprise for diagnostic studies and isolation of pure cultures of pathogenic microorganisms. At the second stage, bacteriophages are selected from the working collection. At the third stage, the formulation of the finished dosage form is carried out, its control and release into circulation. At the fourth stage, together with Evolink specialists, the most optimal scheme for the use of the drug, adapted to a specific enterprise, is being developed.