Psychotropic medications administered on an as-needed basis, often designated as pro re nata (or PRN, hereafter as-needed), can alleviate acute symptoms and facilitate deprescribing, although as-needed use is associated with negative outcomes such as polypharmacy and drug interactions. The aim of this study was to examine the extent to which PRN psychotropic medications are prescribed and administered to assisted living (AL) residents, overall and in relation to resident- and community-level characteristics
