Inclusion Criteria:  • both female and male  age from 18 to 50 years old Verified diagnosis of chronic venous insufficiency CEAP C2-C4 signed infromed consent Absence of any other treatment 2 weeks before the start of the study and throughout the duration of the study  Exclusion Criteria:  • age less than 18 and more than 50 years  Previously performed invasive interventions for varicose veins on any of the lower extremities No visible varicose veins Thrombophlebitis and deep vein thrombosis of the lower extremities in the past Taking prohibited pre-trial therapy Contraindications to taking Venarus® not signed informed consent