FIELD: pharmacy.SUBSTANCE: agent comprises a Na-salt of chondroitin sulfate having an intrinsic viscosity (η), which is equal to 0.01-0.05 m3/kg, in the amount of 4-12 wt %, benzyl alcohol as a preservative in the amount of 0.8-1.2 wt % and water in the remaining amount. The agent may additionally comprise a stabilizer - sodium bisulfite in the amount of 0.09-0.11 wt %.EFFECT: desired therapeutic effect in the absence of side effects such as pain at the time of injection and appearance of induration at injection sites.4 cl, 2 tbl, 4 ex