S. Pechinsky - Ph.D. (Pharm.), Pyatigorsk Medical and Pharmaceutical Institute - a branch of Volgograd state medical university. E-mail: hplc@yandex.ru A. Kuregyan - Ph.D. (Pharm.), Pyatigorsk Medical and Pharmaceutical Institute - a branch of Volgograd state medical university. E-mail: Kooreguan@mail.ru