Merck Manual

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Professional Version

Anticonvulsants or Antiepileptic Drugs

By

Linda Shell

, DVM, DACVIM-Neurology, Ross University School of Veterinary Medicine

Medically Reviewed Mar 2015 | Modified Nov 2022
Topic Resources

Anticonvulsants or antiepileptic drugs (AEDs) are used to stop an ongoing seizure or to decrease the frequency or severity of anticipated future seizures. During a seizure episode or status epilepticus, the route of administration for AEDs is IV ( see Table: Drugs Used for Treatment of Status Epilepticus Drugs Used for Treatment of Status Epilepticus Drugs Used for Treatment of Status Epilepticus ). For longterm maintenance, the oral route is preferred, although absorption may be limited or variable depending on the drug used ( see Table: Antiepileptic Drugs Antiepileptic Drugs Antiepileptic Drugs ). SC or IM injections are seldom used because of the variability in drug absorption.

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