"A relatively new once-a-day antiepileptic drug (AED) is as effective as an older standard one given twice daily, according to a randomized trial.
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Dilantin Consumer (continued)
Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.
Some products that may interact with this drug include: azapropazone, darunavir, delavirdine, dofetilide, etravirine, nisoldipine, rilpivirine, colesevelam, molindone, pyridoxine (vitamin B6), sucralfate, sulfa drugs, telithromycin.
Other medications can affect the removal of phenytoin from your body, which may affect how phenytoin works. Examples include amiodarone, azole antifungals (such as itraconazole), cimetidine, macrolide antibiotics (such as erythromycin), estrogens, isoniazid, rifamycins (such as rifabutin), St. John's wort, other anti-seizure medicines (such as carbamazepine, phenobarbital, valproic acid), among others.
Phenytoin can speed up the removal of other medications from your body, which may affect how they work. Examples of affected drugs include some drugs to treat cancer (such as imatinib, irinotecan), cobicistat, corticosteroids (such as prednisone), cyclosporine, felodipine, quetiapine, quinidine, suvorexant, theophylline, vitamin D, warfarin, among others.
Also report the use of drugs which might increase seizure risk (decrease seizure threshold) such as: phenothiazines (e.g., thioridazine) or tricyclic antidepressants (e.g., amitriptyline), among others. Consult your doctor or pharmacist for details.
This medication may decrease the effectiveness of hormonal birth control such as pills, patch, or ring. This could cause pregnancy. Discuss with your doctor or pharmacist if you should use additional reliable birth control methods while using this medication. Also tell your doctor if you have any new spotting or breakthrough bleeding, because these may be signs that your birth control is not working well.
This product can affect the results of certain lab tests. Make sure laboratory personnel and your doctors know you use this drug.
OVERDOSE: If overdose is suspected, contact a poison control center or emergency room immediately. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center. Symptoms of overdose may include: severe mental/mood changes, severe drowsiness, loss of consciousness, slowed breathing.
NOTES: Do not share this medication with others.
Laboratory and/or medical tests (e.g., phenytoin blood levels, liver function tests) should be performed periodically to monitor your progress or check for side effects. Consult your doctor for more details.
Do not change from one brand of this product to another, or to another dose form of this drug (e.g., capsules) without consulting your doctor or pharmacist. Your dosage may have to be adjusted.
MISSED DOSE: If you miss a dose, use it as soon as you remember unless it is within 4 hours of the next dose. In that case, skip the missed dose and resume your usual schedule. Check with your doctor if you miss doses for more than 2 days in a row. Do not double the dose to catch up.
STORAGE: Store at room temperature between 68-77 degrees F (20-25 degrees C) away from light and moisture. Do not freeze. Do not store in the bathroom. Keep all medicines away from children and pets.
Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company for more details about how to safely discard your product.
MEDICAL ALERT: Your condition can cause complications in a medical emergency. For information about enrolling in MedicAlert, call 1-888-633-4298 (US) or 1-800-668-1507 (Canada).
Information last revised December 2014. Copyright(c) 2014 First Databank, Inc.
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