Dilantin
Brand
name:Dilantin
Pronounced: dye-LAN-tin
Generic name: Phenytoin sodium
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Why
is Dilantin prescribed?
Dilantin
is an antiepileptic drug, prescribed to control grand mal seizures
(a type of seizure in which the individual experiences a sudden
loss of consciousness immediately followed by generalized convulsions)
and temporal lobe seizures (a type of seizure caused by disease
in the cortex of the temporal [side] lobe of the brain affecting
smell, taste, sight, hearing, memory, and movement).
Phenytoin
sodium may also be used to prevent and treat seizures occurring
during and after neurosurgery (surgery of the brain and spinal
cord).
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Most
important fact about Dilantin
If
you have been taking Dilantin regularly, do not stop abruptly.
This may precipitate prolonged or repeated epileptic seizures
without any recovery of consciousness between attacks--a condition
called status epilepticus that can be fatal if not treated promptly.
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How
should you take Dilantin?
It
is important that you strictly follow the prescribed dosage regimen
and tell your doctor about any condition that makes it impossible
for you to take Dilantin as prescribed.
If
you are given Phenytoin sodium Oral Suspension, shake it well
before using. Use the specially marked measuring spoon, a plastic
syringe, or a small measuring cup to measure each dose accurately.
Swallow
Dilantin Kapseals whole. Phenytoin sodium Infatabs can be either
chewed thoroughly and then swallowed, or swallowed whole. The
Infatabs are not to be used for once-a-day dosing.
Do
not change from one form of Phenytoin sodium to another without
consulting your doctor. Different products may not work the same
way.
Depending
on the type of seizure disorder, your doctor may give you another
drug with Dilantin.
--If
you miss a dose...
If
you take one dose a day, take the dose you missed as soon as you
remember. If you do not remember until the next day, skip the
missed dose and go back to your regular schedule. Do not take
2 doses at once.
If
you take more than 1 dose a day, take the missed dose as soon
as possible. If it is within 4 hours of your next dose, skip the
one you missed and go back to your regular schedule. Do not take
2 doses at once.
If
you forget to take your medication 2 or more days in a row, check
with your doctor.
--Storage
instructions...
Store
at room temperature away from light and moisture.
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What
side effects may occur?
Side
effects cannot be anticipated. If any develop or change in intensity,
inform your doctor as soon as possible. Only your doctor can determine
whether it is safe for you to continue taking Dilantin.
More common side effects may include:
Decreased coordination, involuntary eye movement, mental confusion,
slurred speech
Other side effects may include:
Abnormal hair growth, abnormal muscle tone, blood disorders, coarsening
of facial features, constipation, dizziness, enlargement of lips,
fever, headache, inability to fall asleep or stay asleep, joint
pain, nausea, nervousness, overgrowth of gum tissue, Peyronie's
disease (a disorder of the penis that causes the penis to bend
on an angle during erection, often making intercourse painful
or difficult), rapid and spastic involuntary movement, skin peeling
or scaling, skin rash, tremors, twitching, vomiting, yellowing
of skin and eyes
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Why
should Dilantin not be prescribed?
If
you have ever had an allergic reaction to or are sensitive to
phenytoin or similar epilepsy medications such as Peganone or
Mesantoin, do not take Dilantin. Make sure your doctor is aware
of any drug reactions you have experienced.
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Special
warnings about Dilantin
Tell
your doctor if you develop a skin rash. If the rash is scale-like,
characterized by reddish or purplish spots, or consists of (fluid-filled)
blisters, your doctor may stop Dilantin and prescribe an alternative
treatment. If the rash is more like measles, your doctor may have
you stop taking Dilantin until the rash is completely gone.
Because
Dilantin is processed by the liver, people with impaired liver
function, older adults, and those who are seriously ill may show
early signs of drug poisoning.
Practicing
good dental hygiene minimizes the development of gingival hyperplasia
(excessive formation of the gums over the teeth) and its complications.
Avoid
drinking alcoholic beverages while taking Dilantin.
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Possible
food and drug interactions
If Dilantin is taken with certain other drugs, the effects of
either could be increased, decreased, or altered. It is especially
important to check with your doctor before combining Phenytoin
sodium with the following:
Alcohol
Amiodarone (Cordarone)
Antacids containing calcium
Blood-thinning drugs such as Coumadin
Chloramphenicol (Chloromycetin)
Chlordiazepoxide (Librium)
Diazepam (Valium)
Dicumarol
Digitoxin (Crystodigin)
Disulfiram (Antabuse)
Doxycycline (Vibramycin)
Estrogens such as Premarin
Felbamate (Felbatol)
Fluoxetine (Prozac)
Furosemide (Lasix)
Isoniazid (Nydrazid)
Major tranquilizers such as Mellaril and Thorazine
Methylphenidate (Ritalin)
Molindone hydrochloride (Moban)
Oral contraceptives
Phenobarbital
Quinidine (Quinidex)
Reserpine (Diupres)
Rifampin (Rifadin)
Salicylates such as aspirin
Seizure medications such as Depakene, Depakote, Tegretol, and
Zarontin
Steroid drugs such as prednisone (Deltasone)
Sucralfate (Carafate)
Sulfa drugs such as Gantrisin
Theophylline (Theo-Dur, others)
Tolbutamide (Orinase)
Trazodone (Desyrel)
Ulcer medications such as Tagamet and Zantac
Tricyclic antidepressants (such as Elavil, Norpramin, and others)
may cause seizures in susceptible people, making a dosage adjustment
of Dilantin necessary.
Hyperglycemia
(high blood sugar) may occur in people taking Dilantin, which
blocks the release of insulin. People with diabetes may experience
increased blood sugar levels due to Dilantin.
Abnormal
softening of the bones may occur in people taking Dilantin because
of Dilantin's interference with vitamin D metabolism.
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Special
information
If you are pregnant or plan to become pregnant, inform your doctor
immediately. Because of the possibility of birth defects with
antiepileptic drugs such as Dilantin, you may need to discontinue
the drug. Do not, however, stop taking it without first consulting
your doctor. Dilantin appears in breast milk; breastfeeding is
not recommended during treatment with this drug.
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Recommended
dosage
Dosage
is tailored to each individual's needs. Your doctor will monitor
blood levels of the drug closely, particularly when switching
you from one drug to another.
ADULTS
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Standard
Daily Dosage
If
you have not had any previous treatment, your doctor will have
you take one 100-milligram Dilantin capsule 3 times daily to start.
On
a continuing basis, most adults need 1 capsule 3 to 4 times a
day. Your doctor may increase that dosage to 2 capsules 3 times
a day, if necessary.
Once-A-Day
Dosage
If
your seizures are controlled on 100-milligram Dilantin capsules
3 times daily, your doctor may allow you to take the entire 300
milligrams as a single dose once daily.
CHILDREN
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The starting dose is 5 milligrams per 2.2 pounds of body weight
per day, divided into 2 or 3 equal doses; the most a child should
take is 300 milligrams a day. The regular daily dosage is usually
4 to 8 milligrams per 2.2 pounds. Children over 6 years of age
and adolescents may need the minimum adult dose (300 milligrams
per day).
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Overdosage
An
overdose of Dilantin can be fatal. If you suspect an overdose,
seek medical attention immediately.
Symptoms
of Phenytoin sodium overdose may include:
Coma, difficulty in pronouncing words correctly, involuntary eye
movement, lack of muscle coordination, low blood pressure, nausea,
sluggishness, slurred speech, tremors, vomiting
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