Dilantin (Phenytoin Sodium)
Complete patient guide for uses, dosage, side effects, and safety information
Quick Facts
What Is Dilantin Used For?
Dilantin contains phenytoin sodium, which is used to manage epilepsy, a condition characterized by recurrent seizures. It may also be prescribed to prevent seizures during or after brain surgery.
Primary Uses
Dilantin is primarily used to control epilepsy and prevent seizures during or after brain surgery.
How It Works
Dilantin works by stabilizing electrical activity in the brain, thereby preventing seizures.
Good to know: Dilantin is not considered addictive.
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How to Take Dilantin
Follow your doctor's instructions on how to take Dilantin. It's important to take it consistently for effective management of your condition.
Dosage Instructions
Your doctor will determine the appropriate dosage based on your age, condition, and any other medications you may be taking. It is usually started at a low dose and gradually increased.
What If You Miss a Dose?
If you miss a dose and it's almost time for your next dose (within 4 hours), skip the missed dose. If it's not close to the next dose, take it as soon as you remember, but do not double the dose.
Important: Never double dose to make up for a missed dose.
Available Tablet Strengths
Side Effects
Like all medications, this medicine can cause side effects. Most are mild and temporary, but some require medical attention.
Common Side Effects
These side effects occur relatively frequently and usually don’t require emergency care:
- nausea
- vomiting
- constipation
- dizziness
- headache
- weakness
- reduced coordination
- confusion
- sleepiness
- enlarged gums
Seek immediate medical attention if you experience:
- thoughts of suicide or self-harm
- fever
- unusual bruising
- persistent nausea or vomiting
- yellowing of the skin or eyes
- strong stomach pains
- more frequent or severe seizures
- severe skin rash
Impulse Control Issues
Some patients may experience changes in mood or behavior, including increased irritability or agitation.
Important Warnings
There are several important warnings to consider before taking Dilantin.
Who Should Not Take Dilantin
Do not take Dilantin if you have had an allergic reaction to phenytoin sodium, other hydantoin medications, or if you are taking delavirdine.
Medical Conditions to Discuss
Discuss with your doctor if you have liver problems, heart issues, diabetes, or a history of severe skin reactions.
Pregnancy and Breastfeeding
Consult your doctor if you are pregnant, planning to become pregnant, or breastfeeding, as Dilantin can affect the baby.
Elderly Patients With Dementia: Elderly patients may be at a higher risk of experiencing side effects.
Drug Interactions
Certain medications can interact with Dilantin, affecting its effectiveness.
Grapefruit interaction: Grapefruit may affect how Dilantin works.
- disulfiram
- warfarin
- benzodiazepines
- corticosteroids
- some antibiotics and antifungal medications
- theophylline
- oral contraceptives
Alcohol & Driving
Be cautious with alcohol consumption and operating machinery while taking Dilantin.
Alcohol
Alcohol can increase drowsiness and dizziness when taking Dilantin.
Driving and Operating Machinery
Avoid driving or using heavy machinery until you know how Dilantin affects you.
Storage
Store Dilantin in a cool, dry place below 30°C for tablets and below 25°C for suspension. Keep it away from moisture and heat.
Overdose Information
If you suspect an overdose, seek immediate medical help. Contact the Poisons Information Centre at 13 11 26 or go to the nearest hospital.
Frequently Asked Questions
Dilantin may take time to stabilize your condition; follow your doctor's guidance for expected timelines.
It is recommended to take Dilantin during or immediately after a meal to prevent stomach upset.
No, Dilantin is not considered addictive.
Do not stop taking Dilantin suddenly as it may worsen your condition; consult your doctor for guidance.
Be cautious with alcohol as it can increase drowsiness and dizziness while on Dilantin.
Weight gain is not commonly reported as a side effect of Dilantin.
Elderly patients should use Dilantin with caution due to a higher risk of side effects.
If you miss a dose, skip it if it's almost time for your next dose; otherwise, take it as soon as you remember.
Important Disclaimer
This information is intended for general educational purposes only and should not be considered medical advice. Always consult your healthcare provider or pharmacist before starting, stopping, or changing any medication.
If you think you may have a medical emergency, call your doctor or emergency services immediately.