While no standard definition of polypharmacy exists, it is commonly described as the use of unnecessary medications or more medications than clinically necessary. These include both prescription drugs as well as over-the-counter medications and supplements. Although there is not a precise number of medications that constitutes polypharmacy, it is generally considered to mean the concurrent use of five or more.

The consequences of polypharmacy can be dangerous, particularly for seniors, reducing their quality of life and increasing morbidity and mortality. Because of these threats, this guide is designed to help senior living communities understand the risk factors and signs of polypharmacy, and steps to take if staff suspects polypharmacy.