FIELD : medicine; pharmaceuticals.SUBSTANCE : group of inventions refers to pharmaceutical industry, namely to a stable therapeutic solution of sulphomethylated polymyxin. Stable aqueous therapeutic solution of sulphomethylated polymyxin containing 80 mg A/ml to 400 mg A/ml of sulphomethylated polymyxin. Cartridge for parenteral, nasal or inhalation administration of aqueous solution.EFFECT : solution described above improves stability and long-term storage of aqueous solution of sulphomethylated polymyxin.11 cl, 5 tbl, 3 ex