EXTENDED PHENYTOIN SODIUM- phenytoin sodium capsule 
Cardinal Health

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MEDICATION GUIDE

 Extended phenytoin (FEN-i-toyn) sodium oral capsules

 

What is the most important information I should know about extended phenytoin sodium capsules?

1. Do not stop taking extended phenytoin sodium capsules without first talking to your healthcare provider.

 
Stopping extended phenytoin sodium capsules suddenly can cause serious problems.
 
Stopping a seizure medicine suddenly can cause you to have seizures more often or seizures that will not stop (status epilepticus).

2. Like other antiepileptic drugs, extended phenytoin sodium capsules may cause suicidal thoughts or actions in a very small number of people, about 1 in 500. Call a healthcare provider right away if you have any of these symptoms, especially if they are new, worse, or worry you:

 
Thoughts about suicide or dying
 
New or worse anxiety
 
Trouble sleeping (insomnia)
 
Acting on dangerous impulses
 
Attempts to commit suicide
 
Feeling agitated or restless
 
New or worse irritability
 
An extreme increase in activity and talking (mania)
 
New or worse depression
 
Panic attacks
 
Acting aggressive, being angry, or violent
 
Other unusual changes in behavior or mood

Suicidal thoughts or actions can be caused by things other than medicines. If you have suicidal thoughts or actions, your healthcare provider may check for other causes.

How can I watch for early symptoms of suicidal thoughts and actions?

 
Pay attention to any changes, especially sudden changes, in mood, behaviors, thoughts, or feelings.
 
Keep all follow-up visits with your healthcare provider as scheduled.

Call your healthcare provider between visits as needed, especially if you are worried about symptoms.

3. Extended phenytoin sodium capsules can cause a type of serious allergic reaction that may affect different parts of the body such as your liver, kidneys, blood, heart, skin or other parts of your body. These can be very serious and cause death. Call your healthcare provider right away if you have any or all of these symptoms:

 
Fever
 
Sore throat
 
Not wanting to eat (anorexia)
 
Rash
 
Sores in your mouth
 
Nausea
 
Swollen lymph glands
 
Bruise easily
 
Vomiting
 
Swelling of your face, eye, lips, or tongue
 
Trouble swallowing or breathing
 
Purple or red spots on your skin
 
Increase infections
 
Yellowing of the skin and the white part of your eyes (jaundice)

Call your healthcare provider even if the symptoms are mild or if you have been taking extended phenytoin sodium capsules for an extended period of time. These symptoms can be a sign of a serious allergic reaction.

What are extended phenytoin sodium capsules?

Extended phenytoin sodium capsules are a prescription medicine used to treat certain types of seizures called tonic-clonic (grand mal) and psychomotor (temporal lobe) seizures.

Do not take extended phenytoin sodium capsules if you:

 
Are allergic to phenytoin or any of the ingredients in extended phenytoin sodium capsules. See the end of this leaflet for a complete list of ingredients in extended phenytoin sodium capsules.
 
Have had an allergic reaction to CEREBYX (fosphenytoin), PEGANONE (ethotoin), or MESANTOIN (mephenytoin).
 
Have had liver problems from taking phenytoin.
 
Take delavirdine.

Before taking extended phenytoin sodium capsules, tell your healthcare provider about all of your medical conditions, including if you:

 
Have or have had depression, mood problems, or suicidal thoughts or behavior
 
Have had an allergic reaction to a medicine similar to extended phenytoin sodium capsules called carboxamides, barbiturates, succinimides, and oxazolidinediones
 
Have or had liver or kidney problems
 
Have or had an enzyme problem called porphyria
 
Have or had high blood sugar (hyperglycemia)
 
Drink alcohol
 
Are pregnant or plan to become pregnant. Extended phenytoin sodium capsules may harm your unborn baby.
 
If you take extended phenytoin sodium capsules during pregnancy, your baby is at risk for serious birth defects.
 
If you become pregnant while taking extended phenytoin sodium capsules, the level of phenytoin in your blood may decrease, causing your seizures to become worse. Your healthcare provider may change your dose of extended phenytoin sodium capsules.
 
If you take extended phenytoin sodium capsules during pregnancy, your baby is also at risk for bleeding problems right after birth. Your healthcare provider may give you and your baby medicine to prevent this.
 
All women of child-bearing age should talk to their healthcare provider about using other possible treatments instead of extended phenytoin sodium capsules.
 
If you are of childbearing age and are not planning on getting pregnant, you should use effective birth control (contraception) while taking extended phenytoin sodium capsules.
 
Pregnancy Registry: If you become pregnant while taking extended phenytoin sodium capsules, talk to your healthcare provider about registering with the North American Antiepileptic Drug Pregnancy Registry. You can enroll in this registry by calling 1-888-233-2334. The purpose of this registry is to collect information about the safety of antiepileptic drugs during pregnancy.
 
Are breast feeding or plan to breastfeed. Phenytoin can pass into breast milk. You and your healthcare provider should decide if you will take extended phenytoin sodium capsules while you are breastfeeding.

Tell your healthcare provider about all the medicines you take, including prescription and over-the-counter medicines, vitamins, and herbal supplements. These medicines can change the levels of phenytoin in your blood.

Taking extended phenytoin sodium capsules with certain other medicines can cause side effects or affect how well they work. Do not start or stop other medicines without talking to your healthcare provider.

Know the medicines you take. Keep a list of them and show it to your healthcare provider and pharmacist when you get a new medicine.

How should I take extended phenytoin sodium capsules?

 
Take extended phenytoin sodium capsules exactly as your healthcare provider tells you.
 
Your healthcare provider will tell you how much extended phenytoin sodium capsules to take and when to take it.
 
Your healthcare provider may change your dose if needed. Do not change your dose of extended phenytoin sodium capsules without talking to your healthcare provider.
 
Do not stop taking extended phenytoin sodium capsules without first talking to your healthcare provider. Stopping extended phenytoin sodium capsules suddenly can cause serious problems.

What should I avoid while taking extended phenytoin sodium capsules?

 
Do not drink alcohol while you take extended phenytoin sodium capsules without first talking to your healthcare provider. Drinking alcohol while taking extended phenytoin sodium capsules may change your blood levels of phenytoin which can cause serious problems.
 
Do not drive, operate heavy machinery, or do other dangerous activities until you know how extended phenytoin sodium capsules affects you. Extended phenytoin sodium capsules can slow your thinking and motor skills.

 

What are the possible side effects of extended phenytoin sodium capsules?

See “What is the most important information I should know about extended phenytoin sodium capsules?”

Extended phenytoin sodium capsules may cause other serious side effects including:

 
Liver problems.
 
Low blood count which could increase your chance of getting infections, bruising, bleeding and increased fatigue.
 
Softening of your bones (osteopenia, osteoporosis, and osteomalacia) can cause your bones to break (fractures).
 
High blood sugar (hyperglycemia).
 
High levels of phenytoin in your blood that could cause confusion also known as delirium, psychosis or a more serious condition that affects how your brain works (encephalopathy).

Call your healthcare provider right away, if you have any of the symptoms listed above.

The most common side effects of extended phenytoin sodium capsules include:

 
Irregular movement of the eye (nystagmus)
 
Slurred speech
 
Drowsiness (somnolence)
 
Problems with movement and balance (ataxia)
 
Decrease in coordination
 
Confusion

Extended phenytoin sodium capsules can cause overgrowth of your gums. Brushing and flossing your teeth and seeing a dentist regularly while taking extended phenytoin sodium capsules can help prevent this from happening.

These are not all of the possible side effects of extended phenytoin sodium capsules.

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

How should I store extended phenytoin sodium capsules?

 
Store extended phenytoin sodium capsules at room temperature between 68°F to 77°F (20°C to 25°C).
 
Store in tight, light-resistant containers.
 
Protect from moisture.

Keep extended phenytoin sodium capsules and all medicines out of the reach of children.

 

General information about the safe and effective use of extended phenytoin sodium capsules.

Medicines are sometimes prescribed for purposes other than those listed in a Medication Guide. Do not use extended phenytoin sodium capsules for a condition for which it was not prescribed. Do not give extended phenytoin sodium capsules to other people, even if they have the same symptoms that you have. It may harm them. You can ask your pharmacist or healthcare provider for information about extended phenytoin sodium capsules that is written for health professionals.

What are the ingredients in extended phenytoin sodium capsules?

Extended phenytoin sodium capsules 100 mg: white opaque / light lavender opaque, hard gelatin capsules imprinted with "IP 212" on both cap and body.

Active ingredient: 100 mg phenytoin sodium, USP

Inactive ingredients:

D&C Red #28, D&C Red #33, FD&C Blue #1, gelatin, hydroxypropyl cellulose, mannitol, magnesium stearate, talc and titanium dioxide.

For more information about extended phenytoin sodium capsules, visit www.amneal.com or call 1-877-835-5472.

This Medication Guide has been approved by the U.S. Food and Drug Administration.

Distributed by:

Amneal Pharmaceuticals LLC
Bridgewater, NJ 08807

Distributed by:

Cardinal Health

Dublin, OH 43017

L54988450219

Rev. 05-2017-03

Revised: 5/2020
Cardinal Health