Simultaneous use of Kampo medicines ( “Gappo” ) has become fairly widespread through new prescription trials. Since there are little appropriate research data for simultaneous use, however it is difficult for pharmacists to check the prescription preparations. To obtain directly information on the safe use of Kampo medicine, we developed a Kampo medicine Gappo information database. The database information selected involved the overlapping of Kampo medicines compresing one of seven herbs: Glycyrrhizae radix, Rhei rhizoma, Rehmanniae radix, Ephedrae herba, Cinnamomi cortex, Aconiti tuber, or Gypsum fibrosum. The datebase with our previous three database, Kampo prescription preparation support database, Kampo medicine products information database, and a crude drug information database into a Unified Kampo Medicine Information Database System (UKMIDS).