Generic Dilantin

Four different types of generic Dilantin (phenytoin) are currently available. While all of them are equivalent to the brand-name medication, it is recommended that you avoid switching from one brand of Dilantin or phenytoin to another, since even small changes in phenytoin levels in your blood can cause problems.

An Overview of Generic Dilantin

Dilantin® (phenytoin) is a prescription medication that is used to treat epilepsy. Specifically, it is approved to treat certain types of seizures (complex partial seizures and generalized tonic-clonic seizures) in people with epilepsy. It is also approved to prevent seizures during brain surgery.
 
Dilantin is manufactured by Pfizer. However, the patents for all Dilantin products have expired, and several products are available as generics.
 

Generic Dilantin Strengths

The following generic Dilantin products are available:
 
  • Phenytoin sodium 30 mg and 100 mg extended-release capsules
  • Phenytoin 50 mg chewable tablets
  • Phenytoin suspension 125 mg per 5 mL (125 mg per teaspoonful)
  • Phenytoin injection.
 

Who Makes Generic Dilantin?

Generic Dilantin is made by the following companies:
 
  • Mylan Pharmaceuticals
  • Apotheca
  • Taro Pharmaceuticals
  • Caraco Pharmaceutical Laboratories
  • Hospira Worldwide
  • Baxter Healthcare Corp.
  • Actavis
  • Taro Pharmaceuticals
  • Morton Grove Pharmaceuticals
  • Wockhardt USA.
     

Is Generic Phenytoin as Good as Dilantin?

This is a difficult question. Technically, all generic versions of Dilantin should be equivalent to their brand-name counterparts. The U.S. Food and Drug Administration (FDA) has given all generic phenytoin versions an "AB" or "AP" rating, which means that tests have shown that they should be equivalent to the brand-name medicine. However, many healthcare providers feel that switching between different brands of Dilantin or phenytoin is not a good idea. Even small changes in the level of phenytoin in your blood can cause problems.
 
If you are stable on a particular brand of Dilantin or phenytoin, it is best for you to stay on that brand, if possible. If you must switch brands, your healthcare provider may want to check the level of Dilantin in your blood. It may be useful to know that there is often little difference in price between brand-name and generic Dilantin (though this may vary from one pharmacy to the next).
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Dilantin Drug Information

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