Patients with brain tumors may experience sudden bursts of uncontrolled electrical activities in their brain, which is medically termed a seizure. In routine medical practice, doctors prescribe medications to prevent the consequences of seizures and avoid the occurrence of seizure events. Levetiracetam is the commonly preferred anti-seizure medicine in patients with brain tumors. This drug has reduced the risk of seizure events occurring but is associated with a risk of side effects such as increased headache, drowsiness, loss of muscle coordination, and psychological challenges in patients. In patients undergoing appropriate treatment for brain tumors and controlled of seizures in the initial few months of levetiracetam, the chance of further seizures is relatively low. The optimal duration to give levetiracetam is not well defined for these patients, and currently as standard treatment levetiracetam is continued for 2-3 years. This study aims to answer this question by comparing patients on a short course of levetiracetam (experimental arm) versus a longer course of levetiracetam (standard arm), with the anticipation that a shorter duration of treatment will not lead to increased seizure episodes. The study will be conducted at Tata Memorial Centre with a population of 604 patients for a duration of seven years.