Xval-OD 500 Tablet contains Divalproex sodium 500 mg, an anticonvulsant and mood-stabilizing agent primarily indicated for the treatment of epilepsy, bipolar disorder, and migraine prophylaxis. Divalproex acts by increasing gamma-aminobutyric acid (GABA) levels in the brain, thereby exerting an inhibitory effect on neuronal excitability and stabilizing mood fluctuations. This extended-release formulation allows for once-daily dosing, improving patient compliance and maintaining steady plasma concentrations. Xval-OD 500 is effective in managing generalized and partial seizures, reducing the frequency and severity of manic episodes in bipolar disorder, and preventing migraine attacks. It should be administered under medical supervision with dosage adjustments based on clinical response and tolerability. Common adverse effects include gastrointestinal disturbances, dizziness, and weight gain, while serious risks involve hepatotoxicity, pancreatitis, and teratogenicity; therefore, regular monitoring of liver function tests, pancreatic enzymes, and blood counts is recommended. Use is contraindicated in patients with known hypersensitivity to valproate compounds, hepatic impairment, or urea cycle disorders. Caution is advised during pregnancy and lactation. Xval-OD 500 Tablet should be stored in a cool, dry place, away from direct sunlight, and kept out of reach of children.