Phenytoin sodium (marketed as Dilantin® in the USA and as Epanutin® in the UK, by Parke-Davis, now part of Pfizer) is a commonly used antiepileptic. It was approved by the Food and Drug Administration in 1953 for use in seizures.

GoldBamboo

... PHENYTOIN (Dilantin® Kapseals®, Phenytek™) helps to control seizures (convulsions) in certain types of epilepsy. Phenytoin can help to prevent seizures occurring during or after surgery. Phenytoin also treats nerve-related pain such as trigeminal neuralgia. It is not for common aches and pains. Generic phenytoin capsules are available. ...
Drug Digest - more...

Phenytoin Systematic (IUPAC) name 5,5-diphenylimidazolidine-2,4-d ...
Wikipedia - [full article]

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