Extended-release Dilantin Kapseals (capsules) are available in two strengths:
  • Dilantin 30 mg capsules
  • Dilantin 100 mg capsules.
Additional strengths of extended-release phenytoin sodium capsules are available under a different name (made by a different company):
  • Phenytek® 100 mg capsules
  • Phenytek 200 mg capsules
  • Phenytek 300 mg capsules.
Chewable Dilantin tablets come in one strength -- Dilantin 50 mg Infatabs. Liquid Dilantin also comes in one strength – Dilantin-125 suspension, containing 125 mg per 5 mL (125 mg per teaspoonful).
Dilantin injection is also available, although it is rarely used. In fact, it is used so rarely that the brand-name version of Dilantin injection is no longer being made (although generic versions are still available).

Is There a Generic Version of Dilantin?

This medication is available in generic form (see Generic Dilantin).
Know the Signs - Concussion Safety

Dilantin Drug Information

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