RESUMEN
<b>Objective: </b>Pharmacists need to know at what positioning a drug is recommended in clinical practice guidelines when they make prescription proposals. However, the format of guidelines and the definition of recommendation grades differ between academic societies, making it difficult to comprehensively extract only the information one needs. Therefore, we developed a guideline utilization system to support prescription proposals by pharmacists.<br><b>Methods: </b>We built a database comprised of clinical practice guidelines on pharmacological therapy for breast cancer and breast cancer-related conditions. FileMaker®was used in the development of the system.<br><b>Result: </b>This system allows the comprehensive extraction of clinical questions and recommendations from multiple guidelines by means of standardized keywords.<br><b>Conclusion: </b>This system supports prescription proposals by pharmacists when generating pharmacological therapy protocols or when in discussions with healthcare professionals as information on the positioning of therapeutic agents in different guidelines and recommended drugs is readily available.