Oxcarbazepine 300mg (SR) is a sustained-release formulation of the anticonvulsant medication oxcarbazepine, designed to release the drug gradually into the bloodstream. It is primarily used to treat partial seizures and is also employed in the management of bipolar disorder as a mood stabilizer. The sustained-release formulation allows for once-daily dosing, providing a more consistent level of the medication in the body and potentially improving patient adherence to treatment.