RT Book, Section A1 Kane, Robert L. A1 Ouslander, Joseph G. A1 Resnick, Barbara A1 Malone, Michael L. SR Print(0) ID 1149536958 T1 Drug Therapy T2 Essentials of Clinical Geriatrics, 8e YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781259860515 LK accessmedicine.mhmedical.com/content.aspx?aid=1149536958 RD 2024/04/18 AB Many geriatric patients are “walking chemistry sets” because they are prescribed multiple drugs in complex dosage schedules. Polypharmacy is common in older people because of the presence of multiple chronic medical conditions, the proven efficacy of an increasing number of drugs for these conditions, and practice guidelines that recommend their use. Polypharmacy has been defined variably in the literature with the threshold varying between 5 and 10 routine medications. This may be the result of older people seeing multiple prescribing clinicians who do not communicate with each other and a lack of a comprehensive medication list either electronically or in hard copy.