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Read all of this leaflet carefully before you start taking this medicine because it contains important
information for you.

Keep this leaflet. You may need to read it again.
If you have any further questions, ask your doctor or pharmacist.
This medicine has been prescribed for you only. Do not pass it on to others. It may harm them, even if
their signs of illness are the same as yours.
If you get any side effects, talk to your doctor or pharmacist. This includes any possible side effects not
listed in this leaflet.
In this leaflet

1. What PRIMIDONE is and what it is used for
2. What you need to know before you take PRIMIDONE Tablets
3. How to take PRIMIDONE Tablets
4. Possible side effects
5. How to store PRIMIDONE Tablets
6. Contents of the pack and other information

1. What PRIMIDONE is and what it is used for
Primidone Tablets belongs to a group of medicines used to treat
Primidone is used for the treatment of certain types of epilepsy,
seizures (fits) or shaking attacks (essential tremor).

Special Precautions
Check with your doctor or pharmacist before taking your
medicine if any of the following applies to you:
Have ever had problems with your breathing, kidneys or liver.
Are pregnant or are trying to become pregnant (see beneath
for further information)
If you go into hospital, tell the medical staff that you are taking
A small number of people being treated with anti-epileptics such
as primidone have had thoughts of harming or killing themselves.
If at any time you have these thoughts, immediately contact your
doctor. If you are not sure if any of the above applies to you, talk
to your doctor or pharmacist before taking this medicine.
Taking other medicines
Please tell your doctor or pharmacist if you are taking or have
recently taken any other medicines, including medicines obtained
without a prescription. Taking some medicines together can be
In particular, tell your doctor or pharmacist if you are taking any
of the following medicines:
Other medicines used to treat epilepsy and other types of
seizures (such as phenytoin, felbamate, sodium valproate,
carbamazepine, ethosuxamide, oxcarbazepine, tiagabine,
topiramate, zonisamide)
Anticoagulants to prevent blood clots (such as warfarin)
Barbiturates (such as sleeping tablets)
Methadone (used to treat severe pain, cough, or as a
substitute for morphine addiction)
Herbal remedies containing St John s Wort
Antibiotics (such as chloramphenicol, metronidazole,
Antiviral medicines (such as nelfinavir)
Asthma medicines (such as theophylline, montelukast)
Hormone containing medicines (such as the oral
contraceptive pill)

Primidone may increase the toxic effect on the liver of an
overdose of paracetamol.
If you are unsure of the types of medicines you are taking, ask
your doctor or pharmacist.

3. How to take PRIMIDONE Tablets
Always take this medicine exactly as your doctor or pharmacist
has told you.You should check with them if you are not sure.
Swallow the tablets whole with a drink of water.
Primidone is normally taken twice a day. Try to take your tablets
at the same time each day.
At first, your dose may be as little as 125 mg (half a 250 mg
tablet). This will be adjusted by your doctor until your condition
is controlled. Typical maintenance doses are as follows:
Age Group
Daily Dose (milligrams)
Adults and children over 9 years 750 to 1500
Children 6 to 9 years
750 to 1000
Children 2 to 5 years
500 to 750
Children up to 2 years
250 to 500
Elderly / Patients with low physical strength:
Lower doses may be prescribed.
Shaking attacks (essential tremor):
Your starting dose may be 50 mg. This will be adjusted by your
doctor until your condition is controlled.
The maximum daily dose for shaking attacks (essential tremor)
is 750 mg.
If you take more PRIMIDONE than you should:
Do not take more tablets than stated on the label of your
medicine. If you take too many tablets you should seek medical
attention immediately, either by calling your doctor, or going to
the nearest casualty department. Always take the labelled
medicine container with you, even if there are no tablets left.
If you forget to take PRIMIDONE:
If you miss a dose, take it as soon as you remember. Do not take
a double dose to make up for a forgotten tablet.

Taking PRIMIDONE with food and drink
Alcohol can react with Primidone. Ask your doctor for advice if
you want to drink alcohol.

If you stop taking your medicine:
Do not stop taking your Primidone, even if you are feeling well,
unless your doctor tells you to.You may have become dependent
on Primidone, and therefore you could get a withdrawal reaction
if you stop treatment too quickly. Primidone treatment should be
reduced gradually to prevent this.

Pregnancy and breast feeding
Ask your doctor for advice before taking any medicine.

If you have any further questions on the use of this product, ask
your doctor or pharmacist.

The use of Primidone in pregnancy is associated with an
increased risk of abnormalities in babies. Therefore, you must tell
your doctor if you are pregnant, or trying to become pregnant
because Primidone has the potential to harm your unborn child.
Pregnant women can have reduced folic acid in their blood whilst
taking Primidone. In addition, the new born child may develop
withdrawal symptoms if the mother has taken Primidone in the
late stages of pregnancy. Blood clotting problems have occurred
occasionally in children born to women who were previously
taking anticonvulsant drugs.
Tell your doctor if you are breast-feeding because Primidone may
cause your baby to be very sleepy.
Driving and using machines
Primidone can make you feel sleepy. If so, do not drive or
operate machinery.
Important information about some of the ingredients of
This product contains lactose. If you have been told by your
doctor that you have an intolerance to some sugars, please
contact your doctor before taking this medicinal product.

4. Possible side effects
Like all medicines, Primidone can have side effects, although not
everybody gets them.
When first taking Primidone, drowsiness and lack of energy may
occur; these usually pass.
Common side effects (affecting fewer than 1 in every
10 people)
Disturbances of vision
Jerky movements
Rolling of the eyes
Uncommon side effects (affecting fewer than 1 in every
100 people)
Nausea and vomiting
Skin rash
Rare side effects (affecting fewer than 1 in every 1000 people)
Joint or bone pain
Changes in mood or behaviour

Severe skin reactions affecting large portions of your body
including redness, pain, ulcers, blisters, shedding the outer
layer of skin or involvement of lips or the lining of the mouth,
nostrils or ears (e.g. toxic epidermal necrolysis, StevensJohnson syndrome)
A disease called lupus erythematosus which causes
inflammation of various parts of the body including the skin,
joints, lungs, kidneys, heart, and liver
Development of Dupuytren s contracture (a thickening of
fibrous tissue in the palm of the hand that causes one or
more fingers to draw back)
Abnormalities of the blood cells; if you notice a pale
appearance of your skin, abnormal bleeding or tendency to
bruising, fever or sore throat please consult your doctor
Raised levels of enzymes in your liver
Do not be alarmed by this list of possible events.You may not
have any of them.
If any of the above side effects are troublesome or last more
than a few days or if you notice any side effects not mentioned in
this leaflet, please inform your doctor or pharmacist.
5. How to store PRIMIDONE Tablets
Keep all medicines out of the reach and sight of children.
Do not use Primidone Tablets after the expiry date on the
carton and blister as [EXP XX/YYYY]. The expiry date refers to
the last day of that month.
Medicines should not be disposed of via wastewater or
household waste. Ask your pharmacist how to dispose of
medicines no longer required. These measures will help to
protect the environment.
6. Contents of the pack and other information
What PRIMIDONE contains:
Each tablet contains either 50 mg or 250 mg of primidone as the
active ingredient.
The tablets also contain lactose monohydrate, microcrystalline
cellulose, sodium starch glycolate (type A), povidone K 30,
sodium laury sulfate, colloidal anhydrous silica, stearic acid and
magnesium stearate.
What PRIMIDONE looks like and contents of the pack:
Primidone 50 mg Tablets are white to off white, circular uncoated
tablets, diameter 6 mm with PR embossed on one side of the
break line and 50 on the other side of the break line.
Primidone 250 mg Tablets are white to off white, circular
uncoated tablets, diameter 11.5 mm with PR embossed on one
side of the break line and 250 on the other side of the break line.
Primidone tablets are available in boxes of 100 tablets.
Marketing authorisation holder:
Auden Mckenzie (Pharma Division) Ltd.,
Mckenzie House, Bury Street, Ruislip, Middlesex, HA4 7TL, UK
Tiofarma, Benjamin Franklinstraat 9,
3261 LW Oud-Beijereland, Netherlands
This leaflet was last approved in APRIL 2013.

For information in large print, on tape, on CD
or in Braille, phone +44 (0)1895 627 420.

Auden Mckenzie


2. What you need to know before you take
Do not take PRIMIDONE if you:
Are allergic (hypersensitive) to primidone, a substance called
phenobarbitone, or to any of the other ingredients of
Primidone (these are listed in Section 6: Further information).
Have porphyria (a rare inherited disorder of metabolism) or
anyone in your family has it.

Medicines used to treat high blood pressure or heart
conditions (such as betablockers, digitoxin, losartan,
nimodipine, quinidine)
Cyclosporin (used to prevent rejection of an organ
transplant and also for other diseases of the body s immune
Medicines used to treat mental health problems or
depression (such as cloazepine, lamotrigine, mianserin,
tricyclic antidepressants)
Steroid-containing medicines
Medicines used to treat cancer (such as cyclophosphamide,
Granisetron (used to treat severe nausea and vomiting)
Medicines used during an anesthetic for surgery (such as
rocuronium, vecuronium)
Medicines containing morphine, or similar medicines called


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Source: Medicines and Healthcare Products Regulatory Agency

Disclaimer: Every effort has been made to ensure that the information provided here is accurate, up-to-date and complete, but no guarantee is made to that effect. Drug information contained herein may be time sensitive. This information has been compiled for use by healthcare practitioners and consumers in the United States. The absence of a warning for a given drug or combination thereof in no way should be construed to indicate that the drug or combination is safe, effective or appropriate for any given patient. If you have questions about the substances you are taking, check with your doctor, nurse or pharmacist.