It is estimated that one-fifth of adult patients are treated with polypharmacy (five or more drugs) and the prevalence of this phenomenon in the elderly is even higher, ranging from 30% to 70%, even reaching 90% in residents of residential aged care facilities. Polypharmacy in the elderly increases the risk of adverse reactions, inappropriate prescriptions, drug interactions, number of hospitalizations, costs, and even death. In a recent systematic review, the authors proposed defining deprescribing as 'the process of withdrawal of inappropriate medication supervised by a health care professional with the goal of managing polypharmacy and improving outcomes'.
Keywords: Deprescriptions; pharmacoepidemiology; pharmacovigilance; polypharmacy.