Lacoset 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. This mechanism helps to reduce the frequency and severity of seizures. Lacoset 100 is typically prescribed as adjunctive therapy in adults and pediatric patients aged four years and above who have refractory partial-onset seizures. The tablet is administered orally, with dosing individualized based on clinical response and tolerability, usually starting at a lower dose and gradually titrated to minimize adverse effects. Common side effects may include dizziness, headache, nausea, and fatigue, while serious adverse reactions are rare but can include cardiac conduction abnormalities; therefore, caution is advised in patients with pre-existing cardiac conditions. Lacoset 100 should be used under medical supervision, with regular monitoring of seizure control and potential side effects. It is contraindicated in patients with known hypersensitivity to lacosamide or any excipients. Lacoset 100 offers an effective therapeutic option for managing partial-onset seizures, improving patient quality of life through better seizure control.