The researcher of higher studies Lamia Hasan ,Dr.Rahim Jamil Muheisen, Dr. Mohamed Sabbar Abdel Reda, and Rana Mohamed Abdel Nabi. published a research paper entitled (Synthesis and Preliminary Pharmaceutical Evaluation of New Polymeric Prodrug of Levofloxacin as a Drug Delivery System) in the Egyptian Journal of Chemistry with Laboratories),which is with an Impact factor (0.8 )and included within Scopus index. The research included preparation of a medicinal compound Levovkosin based on a natural polymeric compound (chitosan). The prepared compound was diagnosed by spectroscopic and chemical methods. The balanced analysis of the drug was studied in different water media in order to obtain anti-bacterial activity against  (H.pylori) in the digestive system for long periods.