Cerebyx Patient Information including If I Miss a Dose
In this Article
- What is fosphenytoin (Cerebyx)?
- What are the possible side effects of fosphenytoin (Cerebyx)?
- What is the most important information I should know about fosphenytoin (Cerebyx)?
- What should I discuss with my healthcare provider before I receive fosphenytoin (Cerebyx)?
- How is fosphenytoin given (Cerebyx)?
- What happens if I miss a dose (Cerebyx)?
- What happens if I overdose (Cerebyx)?
- What should I avoid while using fosphenytoin (Cerebyx)?
- What other drugs will affect fosphenytoin (Cerebyx)?
- Where can I get more information?
What happens if I miss a dose (Cerebyx)?
Since fosphenytoin is given as needed by a healthcare professional, it is not likely that you will miss a dose.
What happens if I overdose (Cerebyx)?
Seek emergency medical attention if you think you have received too much of this medicine. An overdose of fosphenytoin can be fatal.
Overdose symptoms may include weakness, nausea, vomiting, feeling light-headed, chest pain, fast or slow heart rate, weak pulse, slow breathing (breathing may stop).
What should I avoid while using fosphenytoin (Cerebyx)?
Avoid drinking alcohol while you are receiving fosphenytoin. Alcohol use can increase your blood levels of fosphenytoin and may increase side effects. Daily alcohol use can decrease your blood levels of fosphenytoin, which can increase your risk of seizures.
What other drugs will affect fosphenytoin (Cerebyx)?
Drugs that can increase fosphenytoin levels in your blood include:
- disulfiram (Antabuse);
- birth control pills or hormone replacement therapy;
- chlorpromazine (Thorazine), prochlorperazine (Compazine), thioridazine (Mellaril) and other phenothiazines;
- methylphenidate (Ritalin, Concerta, Daytrana);
- a barbiturate such as amobarbital (Amytal), butabarbital (Butisol), mephobarbital (Mebaral), secobarbital (Seconal), or phenobarbital (Luminal, Solfoton);
- stomach acid reducers such as cimetidine (Tagamet), ranitidine (Zantac), famotidine (Pepcid), or nizatidine (Axid);
- certain sedatives (such as Librium or Valium) or antidepressants (such as Prozac); or
- sulfa drugs such as Septra or Bactrim.
Drugs that can make fosphenytoin less effective in controlling seizures include:
- reserpine; or
- carbamazepine (Tegretol, Epitol, Carbatrol).
Other drugs that can interact with fosphenytoin include:
- a blood thinner such as warfarin (Coumadin);
- digoxin (digitalis, Lanoxin);
- furosemide (Lasix);
- steroid medications (prednisolone and others);
- theophylline (Elixophyllin, Theo-Dur, Theo-Bid, Theolair, Uniphyl);
- valproic acid (Depakene) or divalproex sodium (Depakote);
- an antibiotic such as rifampin (Rimactane, Rifadin, Rifamate) or doxycycline (Doryx, Vibramycin, Adoxa, and others); or
- an antidepressant such as amitriptyline (Elavil), clomipramine (Anafranil), imipramine (Janimine, Tofranil), fluoxetine (Prozac), trazodone (Desyrel), and others.
Where can I get more information?
Your pharmacist can provide more information about fosphenytoin.
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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Additional Cerebyx Information
Report Problems to the Food and Drug Administration
You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.
Find tips and treatments to control seizures.