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Seizure Medications

Medical Editor:

What is a seizure?

A seizure occurs when there is abnormal electrical activity in the brain. Seizures are also known as convulsions – but not all seizures produce convulsive behavior – that is uncontrollable muscle contractions. Absence seizures, for example, involve brief periods of staring. With atonic seizures, there is a loss of muscular tone or strength. The symptoms produced by a seizure are dependent on which part of the brain is experiencing the abnormal electrical activity. Seizures are generally short-lived – from 15 seconds to 15 minutes – however; there is a life-threatening type of seizure, status epilepticus, in which the seizure does not stop.

What causes seizures?

A variety of conditions and substances can trigger seizures. Common causes include congenital abnormalities of the brain, illicit drug use, fever, brain tumors and metabolic imbalances, such as high levels of glucose or sodium. Epilepsy is a condition in which a person experiences repeated seizures, due to an overall electrical disturbance in the brain.

Seizure medications list

AMPA Receptor Antagonist

Calcium Channel Modulators

  • Levetiracetam (Keppra, Keppra XL)

Carbonic Anhydrase Inhibitor


GABA Analogs

GABA Reuptake Inhibitors


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