Used primarily as an anticonvulsant medication to control and prevent seizures in conditions such as epilepsy. It stabilizes neuronal membranes by limiting the spread of seizure activity in the brain. Also employed in the treatment of certain cardiac arrhythmias, particularly those caused by digitalis toxicity, by regulating sodium ion flow in cardiac cells. In some cases, it is applied in neuropathic pain management due to its ability to modulate nerve activity. Additionally, it has been explored in research for its potential neuroprotective properties in various neurological disorders.