Phenytek (phenytoin) is a prescription medicine that can help control certain types of seizures. Specifically, it is approved for treating grand mal seizures, complex partial seizures, and seizures during or after brain surgery. The medication is available as an extended-release capsule that is taken one to three times daily. Possible side effects of the medication include slurred speech and confusion.

What Is Phenytek?

Phenytek® (phenytoin sodium) is a prescription seizure medication. Specifically, Phenytek is approved to control the following types of seizures:
  • Generalized tonic-clonic seizures -- these seizures are also known as "grand mal" seizures, they affect the whole brain ("generalized"), and involve muscle rigidity and contractions ("tonic-clonic").
  • Complex partial seizures -- complex partial seizures involve decreased consciousness ("complex") and only affect one part of the brain ("partial").
  • Seizures during or after brain surgery.
(Click Phenytek Uses for more information on what the drug is used for, including possible off-label uses.)

Who Makes This Medication?

Phenytek is made by Bertek Pharmaceuticals, Inc.

How Does Phenytek Work?

Epilepsy is a brain disorder that occurs when there are recurring, brief changes in how the brain's electrical system works. This change in brain activity can lead to a seizure (see Epilepsy Symptoms).
Phenytek works by affecting sodium channels in the brain. It does not prevent abnormal brain activity from starting; instead, it prevents the abnormal activity from spreading to other parts of the brain. This action helps to control seizures.
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Phenytek Drug Information

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