Watchdog group catalogs 136 meds that can cause dementia, delirium
The elderly are particularly susceptible to drug-induced delirium or dementia and serious side effects from medications, especially painkillers, antidepressants, antihistamines, sleeping pills, urinary incontinence drugs, and the nausea medication often prescribed to diabetics, Reglan (metoclopramide), according to Public Citizen, a nonprofit consumer advocacy group. Among the brand-named drugs most likely to cause delirium or dementia are Benadryl, Ambien, Lunesta, Detrol and Reglan.