Results of domestic and international studies of the 3rd generation fluorchinolone Levofloxacin use in the prevention and treatment of inflammative diseases of the skin, soft tissues, intrabdominal and urogenital infectious complications is presented in the article. Analysis of clinical use of Levofloxacin in the treatment of many diseases indicates its high efficacy, absence of complications, low risk of resistance development, that allows to recommend it for the wide use in in medical practice.