https://goo.gl/l1kj0T
"In this population of older adults on Medicare Part D drug coverage, we noted that while prescriptions of newer line AEDs, in particular levetiracetam, are increasing compared with other studies of older Americans with epilepsy, there remains a substantial proportion receiving older line AEDs, most notably phenytoin," (Dilantin) said Dr. Maria Pisu, senior author of the Epilepsia article. "We cannot assess why this occurs from these data, but the use of newer AEDs with more favorable side effect potential and lower risk for drug-drug interactions is particularly important in an older population with a significant number of co-occurring conditions."