Lacosam 100 Tablet contains lacosamide 100 mg, an antiepileptic agent indicated for the treatment of partial-onset seizures in patients with epilepsy. Lacosamide acts by selectively enhancing slow inactivation of voltage-gated sodium channels, stabilizing hyperexcitable neuronal membranes and inhibiting repetitive neuronal firing without affecting normal neuronal excitability. This mechanism contributes to its efficacy in reducing seizure frequency. Lacosam 100 is typically administered orally, with dosage individualized based on clinical response and tolerability. It may be used as monotherapy or adjunctive therapy in adults and pediatric patients aged 4 years and older. Common adverse effects include dizziness, headache, nausea, and fatigue, which are generally mild to moderate in intensity. Caution is advised in patients with cardiac conduction abnormalities, as lacosamide may prolong PR interval. Regular monitoring of cardiac function is recommended in susceptible individuals. Lacosam 100 should be used under medical supervision, with gradual dose titration to minimize adverse effects. It is contraindicated in patients with known hypersensitivity to lacosamide or any excipients. Patients should be advised not to discontinue therapy abruptly to avoid increased seizure risk. Drug interactions may occur with other antiepileptic drugs and medications affecting cardiac conduction; therefore, a thorough medication review is essential prior to initiation.