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In the US, Phenytoin (phenytoin systemic) is a member of the following drug classes: group I antiarrhythmics, hydantoin anticonvulsants and is used to treat Anxiety, Arrhythmia, Cluster-Tic Syndrome, Epilepsy, Myotonia Congenita, Neurosurgery, Peripheral Neuropathy, Rheumatoid Arthritis, Seizure Prophylaxis During or Following Neurosurgery, Seizures, Status Epilepticus and Trigeminal Neuralgia.

US matches:

UK matches:

Ingredient matches for Phenytoin


Phenytoin (BAN, JAN, USAN) is known as Phenytoin in the US.


Phenylbutazone sodium (a derivative of Phenylbutazone) is reported as an ingredient of Phenytoin in the following countries:

  • Taiwan


BANBritish Approved Name
JANJapanese Accepted Name
USANUnited States Adopted Name

Further information on drug naming conventions: International Nonproprietary Names.

Important Notice: The international database is in BETA release. This means it is still under development and may contain inaccuracies. It is not intended as a substitute for the expertise and judgement of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that the use of any medication in any country is safe, appropriate or effective for you. Consult with your healthcare professional before taking any medication.

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.