As we age, our bodies process medications differently, and this is particularly true with Phenytoin, a common drug used to treat seizures. Elderly patients often require lower doses due to slowed metabolism and increased sensitivity. Additionally, these patients may experience more side effects, including confusion and unsteady gait, which can potentially lead to falls. It's crucial that doctors monitor blood levels of Phenytoin closely in the elderly to avoid toxicity. And as always, the benefits of the medication should be weighed against its potential risks.