Levetiracetam USP For Compounding (API)Levetiracetam USP is an active pharmaceutical ingredient (API) that is used in medications for treating epilepsy and other seizure disorders. It is a type of anticonvulsant drug that works by balancing the levels of certain chemicals in the brain to prevent seizures. Levetiracetam is available in both brand name and generic forms and is typically taken by mouth in tablet or liquid form. It is approved by the U. S. Food and Drug Administration (FDA)