Phenytoin – Oral

Why do I need this medicine?

Phenytoin is used on its own or together with other medicines to treat epilepsy (also known as fits or seizures).

It may be used to prevent or treat seizures during or after certain brain surgeries.

Phenytoin is also used to relieve pain in a painful nerve condition that affects the face called trigeminal neuralgia.

How do I take this medicine?

Take Phenytoin exactly as directed by your doctor or according to the instructions on the label. Do not take more or less than instructed by your doctor.

Take Phenytoin with food to lessen gastric irritation. Try to take it at the same time each day.

If you are taking the capsule or tablet, swallow it whole with a glass of water. Do not open, chew or crush it.

If you are taking the syrup, shake the bottle well before taking your dose. Use the dropper provided to measure out your dose of Phenytoin.

Do not switch between different brands or dosage forms (for example, a capsule, tablet or syrup) unless advised by your doctor.

If you are on nasogastric feeding or enteral feeds, take your dose of Phenytoin at least 2 hours before or after feeds. Always flush the tubing with water after each dose of Phenytoin to ensure that the full dose is taken.

Phenytoin must be taken regularly for it to be effective. Continue taking Phenytoin even when you feel better. Phenytoin is not a cure and you may need to take it long-term to keep your seizures under control. Do not stop taking Phenytoin unless instructed otherwise as stopping it suddenly may worsen your condition.