phenytoin (oral) (cont.)
IN THIS ARTICLE
- What is phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- What are the possible side effects of phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- What is the most important information I should know about phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- What should I discuss with my healthcare provider before taking phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- How should I take phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- What happens if I miss a dose (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- What happens if I overdose (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- What should I avoid while taking phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- What other drugs will affect phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
- Where can I get more information?
What happens if I miss a dose (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.
What happens if I overdose (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
Seek emergency medical attention or call the Poison Help line at 1-800-222-1222. An overdose of phenytoin can be fatal. Overdose symptoms may include twitching eye movements, slurred speech, loss of balance, tremor, muscle stiffness or weakness, nausea, vomiting, feeling light-headed, fainting, and slow or shallow breathing.
What should I avoid while taking phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
Avoid drinking alcohol while you are taking phenytoin. Alcohol use can increase your blood levels of phenytoin and may increase side effects. Daily alcohol use can decrease your blood levels of phenytoin, which can increase your risk of seizures.
Avoid taking antacids at the same time you take phenytoin. Antacids can make it harder for your body to absorb the medication.
Phenytoin may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.
What other drugs will affect phenytoin (Dilantin, Dilantin Infatabs, Dilantin-125, Phenytek)?
Many drugs can interact with phenytoin. Below is just a partial list. Tell your doctor if you are using:
- antibiotics such as cycloserine (Seromycin), doxycycline (Doryx, Vibramycin, Adoxa), isoniazid (for treating tuberculosis), linezolid (Zyvox), rifampin (Rimactane, Rifadin, Rifamate), or sulfa drugs (Bactrim, Septra, Sulfatrim, SMX-TMP, and others);
- an antidepressant (such as Elavil, Vanatrip, Limbitrol, Sinequan, Silenor, Pamelor, Paxil, Zoloft, Desyrel, and others);
- aspirin or other salicylates;
- birth control pills or hormone replacement therapy;
- a blood thinner such as warfarin (Coumadin, Jantoven);
- certain sedatives (Librium, Librax, Limbitrol, Valium) or antidepressants (Desyrel, Luvox, Zoloft, Prozac, Rapiflux, Sarafem, Selfemra, Symbyax);
- heart medication such as amiodarone (Cordarone, Pacerone), digoxin (digitalis, Lanoxin), furosemide (Lasix), or quinidine (Quin-G);
- prochlorperazine (Compazine, Compro), promethazine (Pentazine, Phenergan, Anergan, Antinaus), and other phenothiazines;
- steroid medicines (prednisone and others);
- seizure medicine (such as Carbatrol, Equetro, Tegretol, Solfoton, Depakene, or Depakote);
- stomach acid reducers (such Tagamet, Prilosec, Zegerid, Zantac, Pepcid, or Axid); or
- theophylline (Elixophyllin, Theo-Dur, Theo-Bid, Theolair, Uniphyl).
This list is not complete and there are many other medicines that can interact with phenytoin. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor. Keep a list of all your medicines and show it to any healthcare provider who treats you.
Where can I get more information?
Your pharmacist can provide more information about phenytoin.
Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.
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