What are the side effects/problems you can have from taking 400mgs of Dilantin?… by Roset
My body has been behaving strangely since I recently had an extra 100mgs added to my dosage. I need to know as many reported problems with Dilantin as possible, because all I can find are the side effects, nothing else. They are epilepsy pills I should add. Thank you 
Rosie.
Best Answer:
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat. Call your doctor at once if you have any of these serious side effects:
swollen glands;
fever, sore throat, and headache with a severe blistering, peeling, and red skin rash;
confusion, hallucinations, unusual thoughts or behavior;
slurred speech, loss of balance or coordination;
restless muscle movements in your eyes, tongue, jaw, or neck;
tremor (uncontrolled shaking);
extreme thirst or hunger, urinating more than usual;
nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
easy bruising or bleeding;
swollen or tender gums; or
changes in the shape of your face or lips.
Less serious side effects may be more likely to occur, such as:
mild skin rash or itching;
dizziness, nervousness, sleep problems (insomnia);
twitching;
nausea, vomiting, constipation;
headache; or
joint pain.
Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.
What other drugs will affect Dilantin?
Drugs that can increase Dilantin levels in your blood include:
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);
estrogen hormone replacement;
chlorpromazine (Thorazine), prochlorperazine (Compazine), thioridazine (Mellaril) and other phenothiazines;
disulfiram (Antabuse);
methylphenidate (Ritalin, Concerta, Daytrana); and
sulfa drugs such as Septra or Bactrim.
Drugs that can make Dilantin less effective in controlling seizures include:
carbamazepine (Tegretol, Epitol, Carbatrol);
sucralfate (Carafate); and
molindone (Moban).
Other drugs that can interact with Dilantin include:
valproic acid (Depakene) or divalproex sodium (Depakote);
phenobarbital (Luminal, Solfoton);
steroid medicines (prednisone and others);
antidepressants such as amitriptyline (Elavil), clomipramine (Anafranil), imipramine (Janimine, Tofranil), paroxetine (Paxil), and others;
antibiotics such as rifampin (Rimactane, Rifadin, Rifamate) or doxycycline (Doryx, Vibramycin, Adoxa, and others);
digitoxin (digitalis, Lanoxin);
furosemide (Lasix); and
theophylline (Elixophyllin, Theo-Dur, Theo-Bid, Theolair, Uniphyl).
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