Zonisamide is used with other medications to prevent and control seizures (epilepsy). Zonisamide is a sulfonamide anticonvulsant and a carbonic anhydrase inhibitor. It is unknown how zonisamide works to prevent seizures.
Take this medication by mouth as directed by your doctor, usually 1 to 2 times a day with or without food. Swallow the capsules whole. To prevent kidney stones from forming, drink plenty of liquids while taking this medication unless your doctor instructs you otherwise.
Dosage is based on your medical condition and response to treatment. It is very important to follow your doctor's dosing instructions exactly. Your doctor will start you on a low dose and slowly increase your dose. It may take several weeks or months to reach the best dose for you and to get the full benefit from this medication.