Levetiracetam 500mg (SR) is a sustained-release formulation of an anticonvulsant used to treat epilepsy and prevent seizures. Levetiracetam works by stabilizing electrical activity in the brain, helping to prevent the abnormal electrical signals that lead to seizures. The sustained-release (SR) form allows for a gradual release of the medication into the bloodstream over time, providing longer-lasting effects and reducing the frequency of doses compared to the immediate-release version. It is commonly prescribed for managing conditions like focal seizures, generalized tonic-clonic seizures, and other types of epilepsy.