Maintenance of the bactericidal activity and organoleptic properties of 3% and 5% stabilized aqueous solutions of pectin (Pepidol PEG, 3% and Pepidol PEG, 5%) stored for prolonged periods and at various temperatures was studied. Pepidol PEG was shown to preserve its bactericidal activity and organoleptic properties for 28 months when stored at rather wide ranges of the environmental temperature. The drug did not lose its properties after freezing and subsequent melting. The results of the study allowed to increase the period of Pepidol PEG use up to 18 months and the storage temperature ranges up to -30 degrees to +30 degrees C.