Mephenytoin is a medication primarily used to manage certain types of seizures, particularly in patients with epilepsy. It belongs to a class of drugs known as anticonvulsants, which work by stabilizing electrical activity in the brain to prevent seizure episodes. This drug is often prescribed when other treatments are ineffective or not tolerated. Like other medications, Mephenytoin can have side effects, including dizziness, drowsiness, and gastrointestinal issues. Regular monitoring by a healthcare professional is essential to ensure its effectiveness and safety in patients.