Abstract
In order to prevent from medical accidents caused by mix-up of medicines, the conrmation of
their usage should be the key to identifying error. A computerized order entry system for medicines providing
information related to therapeutic indications to doctors will avoid mix-ups of medicines such as the case
in question. To investigate data which can be utilized for a database in such an entry system, we study
the description patterns of the sentences in the dosage regimen portion of the SGML formatted package
inserts data via a method based on the text mining technique. Based on this result, we also propose the data
structure of dosage regimen information, which will be the basis of a drug information database to ensure
safe usage.