[Introduction to Tools for Assessing Medication Use Appropriateness in Older Adults].

The prevalence of potentially inappropriate medication (PIM) use is high, presenting a serious public health problem. In older adults, PIM increases the risks of adverse drug events, falls, hospitalizations, and emergency treatments as well as related medical expenses. The currently popular criteria for determining medication appropriateness and several common medication appropriateness assessment tools are introduced in this paper, including the Medication Appropriateness Index, the Beers criteria series, the Screening Tool of Older Person's Prescriptions (STOPP) and the Screening Tool to Alert doctors to Right Treatment (START) series, Thailand criteria, and the PIM-Taiwan criteria, with the goal of facilitating their application by medical professionals in clinical practice.