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- $Unique_ID{BRK03301}
- $Pretitle{}
- $Title{primidone}
- $Subject{Myidone Major Mysoline Wyeth-Ayerst Anticonvulsant primidone seizure
- phenobarbital central nervous system brain spinal cord depressants}
- $Volume{}
- $Log{}
-
- Copyright (C) 1993 Publications International, Ltd.
-
-
- primidone
- ------------------------------------------------------------------------------
-
- BRAND NAMES (Manufacturers)
-
- Myidone (Major)
- Mysoline (Wyeth-Ayerst)
- primidone (various manufacturers)
-
- TYPE OF DRUG
-
- Anticonvulsant
-
- INGREDIENT
-
- primidone
-
- DOSAGE FORMS
-
- Tablets (50 mg and 250 mg)
- Oral suspension (250 mg per 5-ml spoonful)
-
- STORAGE
-
- Primidone tablets and oral suspension should be stored at room
- temperature in tightly closed containers. This medication should never be
- frozen.
-
- USES
-
- Primidone is used to treat various seizure disorders. This drug is
- converted in the body to phenobarbital. It is not clear exactly how primidone
- or phenobarbital acts to decrease the number of seizures, but both drugs are
- central nervous system (brain and spinal cord) depressants.
-
- TREATMENT
-
- In order to avoid stomach irritation, you can take primidone with food or
- with a full glass of water or milk (unless your doctor directs you to do
- otherwise).
- The oral suspension form of this medication should be shaken well just
- before measuring each dose. The contents tend to settle on the bottom of the
- bottle, so it is necessary to shake the container to distribute the
- ingredients evenly and equalize the doses. Each dose should then be measured
- carefully with a specially designed 5-ml measuring spoon.
- Primidone works best when the level of medicine in your bloodstream is
- kept constant. It is best, therefore, to take the doses at evenly spaced
- intervals day and night.
- It is important to try not to miss any doses of this medication. If you
- do miss a dose and remember within two hours, take the missed dose
- immediately. If more than two hours have passed, do not take the missed dose
- at all; just return to your regular dosing schedule. Do not double the next
- dose. If you miss two or more consecutive doses, contact your doctor as soon
- as possible.
-
- SIDE EFFECTS
-
- Minor.
-
- Dizziness, drowsiness, fatigue, loss of appetite, nausea, or vomiting.
- These side effects should disappear as your body adjusts to the medication.
- If you feel dizzy, sit or lie down for a while; get up slowly from a
- sitting or reclining position, and be careful on stairs.
-
- Major.
-
- Tell your doctor about any side effects that are persistent or
- particularly bothersome. TELL YOUR DOCTOR about blurred vision, emotional
- disturbances, irritability, loss of coordination, or skin rash.
-
- INTERACTIONS
-
- Primidone interacts with several other types of medications:
- 1. Concurrent use of primidone with other central nervous system
- depressants (such as alcohol, antihistamines, barbiturates, benzodiazepine
- tranquilizers, muscle relaxants, narcotics, pain medications, phenothiazine
- tranquilizers, and sleeping medications) or with tricyclic antidepressants can
- lead to extreme drowsiness.
- 2. The blood levels and therapeutic effects of oral anticoagulants (blood
- thinners, such as warfarin), adrenocorticosteroids (cortisone-like
- medications), digitoxin, phenytoin, doxycycline, and tricyclic antidepressants
- can be decreased by primidone.
- 3. Primidone can decrease the absorption of griseofulvin from the
- gastrointestinal tract, thereby decreasing its effectiveness.
- Before starting to take primidone, BE SURE TO TELL YOUR DOCTOR about any
- medications you are currently taking.
-
- WARNINGS
-
- * Tell your doctor about unusual or allergic reactions you have had to
- any medications, especially to primidone, phenobarbital, or other barbiturates
- (such as amobarbital, butabarbital, mephobarbital, pentobarbital, and
- secobarbital).
- * Before starting to take primidone, be sure to tell your doctor if you
- now have or if you have ever had asthma, kidney disease, liver disease, or
- porphyria.
- * If this drug makes you dizzy or drowsy, do not take part in any
- activity that requires alertness, such as driving a car or operating
- potentially dangerous machinery.
- * Before having surgery or any other medical or dental treatment, be sure
- to tell your doctor or dentist that you are taking primidone.
- * Do not stop taking this medication unless you first check with your
- doctor. Stopping the drug abruptly can lead to a worsening of your condition.
- Your doctor may therefore want to reduce your dosage gradually or start you on
- another drug when primidone is stopped.
- * Be sure to tell your doctor if you are pregnant. An increased risk of
- birth defects in infants of mothers with seizure disorders has been reported.
- It is unclear whether this increased risk is associated with the disorders or
- with the anticonvulsant medications, such as primidone, that are used to treat
- them. Such drugs may also lead to bleeding complications in the newborn. The
- risks and benefits of treatment should be discussed with your doctor. Also,
- tell your doctor if you are breast-feeding an infant. Primidone passes into
- breast milk and can cause extreme drowsiness in nursing infants.
-
- ----------------
-
- The material contained here is "FOR INFORMATION ONLY" and should not replace
- the counsel and advice of your personal physician. Promptly consulting your
- doctor is the best path to a quick and successful resolution of any medical
- problem.
-