Generic Name: Phenytoin

  • What is Phenytek?

    Phenytek is a medicine used to treat tonic-clonic (grand mal) and complex partial (psychomotor or temporal lobe) seizures. This medicine can also be used to prevent and treat seizures that happen during or after brain surgery.

  • What is the most important information I should know about Phenytek?

    Do not stop taking Phenytek without first talking to your doctor. Stopping Phenytek suddenly can cause serious problems, including seizures that will not stop (status epilepticus).

    Phenytek can cause suicidal thoughts or actions. Tell your doctor immediately if you have thoughts about suicide or dying; attempt to commit suicide; have new or worse depression, anxiety, or irritability; have panic attacks; have trouble sleeping (insomnia); have an extreme increase in activity and talking (mania); are feeling agitated or restless; acting aggressive; being angry or violent; acting on dangerous impulses; or have other unusual changes in behavior or mood.

    Phenytek can harm your unborn baby if you take it during pregnancy. Tell your doctor if you are pregnant or plan to become pregnant.

    Phenytek can cause swollen lymph nodes (glands found throughout the body that remove bacteria and play an important role in your immune system). Your doctor will monitor you for this problem. Also, Phenytek can cause an overgrowth of your gums. Brushing and flossing your teeth and seeing a dentist regularly while you are taking Phenytek can help prevent this.

    Phenytek can also cause allergic reactions or serious problems, which can affect organs and other parts of your body, including your liver or blood cells. Contact your doctor immediately if you experience swelling of your face, eyes, lips, or tongue; trouble swallowing or breathing; a skin rash; fever; swollen lymph nodes or sore throat that do not go away or come and go; painful sores in your mouth or around your eyes; yellowing of your skin or whites of your eyes; unusual bruising or bleeding; severe tiredness or weakness; severe muscle pain; or frequent infections or an infection that does not go away.

  • Who should not take Phenytek?

    Do not take Phenytek if you are allergic to it, any of its ingredients, or other similar medications (such as ethotoin, fosphenytoin, or mephenytoin).

  • What should I tell my doctor before I take the first dose of Phenytek?

    Tell your doctor about all prescription, over-the-counter, and herbal medications you are taking before beginning treatment with Phenytek. Also, talk to your doctor about your complete medical history, especially if you have or have had liver disease, porphyria (a blood disorder that interferes with how your body produces heme, which is the oxygen-carrying component of your red blood cells), or diabetes; if you have depression, mood problems, or suicidal thoughts or behavior; or if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What is the usual dosage?

    The information below is based on the dosage guidelines your doctor uses. Depending on your condition and medical history, your doctor may prescribe a different regimen. Do not change the dosage or stop taking your medication without your doctor's approval.

    Adults: Your doctor will prescribe the appropriate dose for you based on your condition and will increase your dose as appropriate.

    Children: Your doctor will prescribe the appropriate dose for your child, based on their weight.

    Attempts to taper or discontinue the medication should be made at specific intervals, through the guidance of your doctor.

  • How should I take Phenytek?

    Take Phenytek exactly as prescribed by your doctor. Do not change your dose or stop taking this medication abruptly without first talking to your doctor.

  • What should I avoid while taking Phenytek?

    Do not drink alcohol while you are taking Phenytek. Drinking alcohol while you are taking Phenytek can change your blood levels of phenytoin, which can cause serious problems.

    Do not drive, operate heavy machinery, or engage in dangerous activities until you know how Phenytek affects you. Phenytek can slow your thinking and motor skills.

  • What are possible food and drug interactions associated with Phenytek?

    If Phenytek is taken with certain other drugs, the effects of either could be increased, decreased, or altered. Phenytek may interact with numerous medications. Therefore, it is very important that you tell your doctor about any other medications you are taking.

  • What are the possible side effects of Phenytek?

    Side effects cannot be anticipated. If any develop or change in intensity, tell your doctor as soon as possible. Only your doctor can determine if it is safe for you to continue taking this drug.

    Side effects may include: allergic reactions, confusion, constipation, dizziness, headache, nausea, nervousness, osteomalacia (a condition of softening of the bones), overgrowth of your gums, problems with your walking or coordination, rash, slurred speech, tremor, trouble sleeping, vomiting

  • Can I receive Phenytek if I am pregnant or breastfeeding?

    Phenytek can harm your unborn baby if you take it during pregnancy. Phenytek can be found in your breast milk if you take it while breastfeeding. Do not breastfeed while you are taking Phenytek. Tell your doctor immediately if you are pregnant, plan to become pregnant, or are breastfeeding.

  • What should I do if I miss a dose of Phenytek?

    If you miss a dose of Phenytek, take it as soon as you remember. However, if it is almost time for your next dose, skip the one you missed and return to your regular dosing schedule. Do not take two doses at once.

  • How should I store Phenytek?

    Store at room temperature. Protect from light and moisture.