Drug interaction microcomputer software evaluation: drug interaction facts on disk.

Drug Interaction Facts on Disk (DIF) was evaluated using general and specific criteria. The installation process, ease of learning and use, the user documentation, and the technical support were rated excellent. The scope of coverage, the quality of the clinical documentation, and overall clinical performance were also excellent. The frequency of updates is good. The program's clinical performance was compared to RxTriage and Drug Therapy Screening System using five recently reported drug interactions. The ability to screen for selected drug-food/nutrient interactions was also evaluated. Drug Interaction Facts is rated to be one of the better bargains in drug interaction software programs.