Levetiracetam is used to treat partial-onset seizures (seizures that involve only one part of the brain) in adults and children 1 month of age and older. Levetiracetam is also used in combination with other medications to treat myoclonic seizures (brief, shock-like jerks of a muscle or a group of muscles) in children 12 years of age and older. It is also used in combination with other medications to treat primary generalized tonic-clonic seizures (formerly known as a grand mal seizure; seizure that involves the entire body) in adults and children 6 years of age and older. Levetiracetam is in a class of medications called anticonvulsants. It works by decreasing abnormal excitement in the brain.