Used as an anticonvulsant medication, primarily in the management of acute seizures and status epilepticus. It serves as a prodrug to phenytoin, offering faster and more reliable absorption when intravenous access is difficult. Commonly administered in emergency settings due to its rapid conversion to phenytoin, providing effective seizure control. Its water-soluble nature allows for intramuscular injection, which is advantageous when IV administration is not feasible. Frequently used in hospitals for short-term seizure management during neurosurgical procedures or in critical care units.