The purpose of this study was to develop an information system about drugs. The Joint Application Design Method which is popular in developing information systems was used. This system will be useful for the health care personnel and nursing students with easy access to information by using computer. The user requirements for this system were collected and analyzed through a survey of 50 nurses in a hospital and 30 students at a school of nursing. Based on this analysis, the specific contents were designed. The characteristics of this system as follows. Firstly it is the fast searching function which uses not only names of drugs(generic name, functional name, commercial name), but also names of diseases. Secondly, it is the function which maintains an updated database by the way of adding, updating and deleting the data. Thirdly, this system is useful for the education. In teaching and learning process, Computer-Assisted Instruction(CAI) is considered as one of the outstanding method bacause the individual differences in learners are respected and thus educational effect in pharmacology is expected.