What type of drug is Zonisamide?

Zonisamide is classified as an anticonvulsant drug, which means it is primarily used to treat seizures associated with epilepsy. It works by stabilizing electrical activity in the brain and reducing the frequency of seizures. Its mechanism of action involves inhibiting sodium channels and reducing calcium currents, thereby having a calming effect on hyperexcitable neurons.

In the context of the options, anticonvulsants are specifically designed for seizure management, distinguishing them from other categories of medications. Antihypertensive drugs are used to lower blood pressure, anxiolytics are intended for anxiety relief, and antibiotics are aimed at treating bacterial infections. Each of these alternatives has a different therapeutic focus and application, highlighting why they do not fit the classification of Zonisamide.