<;P>;PROBLEM TO BE SOLVED: To provide an antibacterial agent containing zinc tranexamate and/or zinc carnosinate as an active ingredient. <;P>;SOLUTION: This antibacterial agent contains zinc tranexamate acid zinc salt and/or zinc carnosinate salt having antibacterial properties against periodontal disease-causing bacteria and the like and low in cytotoxicity as an active ingredient. <;P>;COPYRIGHT: (C)2009,JPO&INPIT