Skip to main content
phenytoin

phenytoin

3 7.9
A medicine that treats and prevents seizures in epilepsy
  • noun
  • /ˌfɛnɪˈtɔɪn/
  • Specialized
translation icon : fenitoína
  • Phenytoin's side effects include drowsiness, acne, overgrowth of the gums, nausea, vomiting, mental confusion, mental slowing.
  • drugs such as phenytoin

Examples

  • Patients suffering from epilepsy often rely on phenytoin as part of their treatment regimen.

  • Phenytoin is a medication for seizures that can potentially cause more harm to the mother and fetus than the medication.

    Blog text (25)
  • The patient was placed on phenytoin for seizure prophylaxis.

    Academic text (2008)
  • The seizure resolved after phenytoin sodium was administered.

    Academic text (1999)
  • For some drugs (e.g., phenytoin, aspirin), however, the rate of clearance decreases with increasing serum concentrations.

    Academic text (2011)
  • Epilepsy can affect contraception, as some anti-epilepsy drugs (e.g., phenytoin) interfere with the combined oral contraceptive pill, meaning that a higher dose pill is needed.

    Academic text (2011)
  • For example, drugs that block sodium channels (carbamazepine and phenytoin) are effective in tonic-clonic seizures and grand mal convulsions, while their use in small epilepticus may lead to worsening of the condition.

    Blog text (8)
  • The doctor prescribed phenytoin to control his seizures effectively.

  • After the diagnosis, she started taking phenytoin daily to prevent further convulsions.

Synonyms

Dilantin
vsphenytoin
  • Specialized
8 6.3

A drug used to treat epilepsy and prevent seizures

is the generic active drug rather than a brand name
antiepileptic drug
vsphenytoin
  • Specialized
1 4.1

A medicine that prevents or controls seizures in people with epilepsy

is a single medicine rather than the class of such medicines
diphenylhydantoin
vsphenytoin
  • Specialized
8.9

A medicine that helps prevent seizures in people with epilepsy

is the common medical name rather than the technical chemical term
primidone
vsphenytoin
  • Specialized
9.8

A medicine that treats seizures and shaking of the hands

is focused on treating seizures rather than tremor or movement issues
anticonvulsant drug
vsphenytoin
  • Specialized
4.2

A medicine that prevents or reduces seizures in people with epilepsy

is one specific medicine within that broader drug category
antiepileptic
vsphenytoin
  • Specialized
5.5

A drug that prevents or controls seizures in people with epilepsy

is one example from that class rather than the whole group
mephenytoin
vsphenytoin
  • Specialized
9.9

A risky medicine used to treat seizures when other medicines do not work

is the safer standard treatment used before toxic alternatives

Surface Forms

phenytoin singular
phenytoins plural

Etymology

The word phenytoin comes from its chemical name diphenylhydantoin. The phenyl part is a common 'ring' piece found in many medicines and hydantoin is the chemical family, so the name simply tells you what the drug is and helps you remember it is a medicine used to treat and prevent seizures.