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Active substance(s): ALLOPURINOL

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Zyloric® 100 mg Tablets


Your medicine is available by using the above name but will be referred to
as Zyloric throughout the following leaflet.
Zyloric Tablets are also available in 300 mg strength.
Read all of this leaflet carefully before you start taking this medicine.
- 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. Do not pass it onto others. It
may harm them, even if their symptoms are the same as yours.
- If any of the side effects gets serious, or if you notice any side effects not
listed in this leaflet, please tell your doctor or pharmacist.
In this leaflet:
1 What Zyloric is and what it is used for
2 Before you take Zyloric
3 How to take Zyloric
4 Possible side effects
5 How to store Zyloric
6 Further information
Zyloric tablets contain a medicine called allopurinol. It works by slowing
down the speed of certain chemical reactions in your body.
Zyloric is used:
- to prevent gout. This is a disease where your body produces too much of
a substance called ‘uric acid’. The uric acid builds up in your joints and
tendons as crystals. These crystals cause an inflammatory reaction. The
inflammation causes the skin around certain joints to become swollen,
tender and sore when only slightly touched. You can also find you get
severe pain when the joint is moved.
- to prevent other conditions where there is a build up of uric acid in the
body. These include kidney stones and certain other types of kidney
problem and when you are having treatment for cancer.
Do not take Zyloric if:
- you are allergic (hypersensitive) to allopurinol or any of the other
ingredients of Zyloric (listed in Section 6).
Do not take Zyloric if the above applies to you. If you are not sure, talk to
your doctor or pharmacist before taking Zyloric.
Warnings and Precautions
Talk to your doctor or pharmacist before taking your medicine if:
- you have problems with your liver or kidneys. Your doctor may give you a
lower dose or ask you to take it less often than each day. They will also
monitor you more closely
- You have heart problems or high blood pressure
- you are currently having an attack of gout
- you have been told by your doctor that you have an intolerance to
lactose. Zyloric tablets contain a small amount of lactose. If you have
been told by your doctor that you have an intolerance to some
sugars, contact your doctor before taking this medicinal product.
Serious skin rashes have been reported with the use of allopurinol that can
be more common in patients with chronic renal impairment and in people of
Han Chinese or Thai Origin. These serious skin rashes can include
(Hypersensitivity syndrome, Stevens- Johnson syndrome and toxic
epidermal necrolysis) have been reported with the use of allopurinol.
Frequently, the rash can involve ulcers of the mouth, throat, nose, genitals
and conjunctivitis (red and swollen eyes).
These serious skin rashes are often preceded by influenza-like symptoms
fever, headache, body ache (flu-like symptoms). The rash may progress to
widespread blistering and peeling of the skin. If you develop a rash or these
skin symptoms, stop taking allopurinol and contact your doctor
Taking other medicines
Tell your doctor or pharmacist if you are taking any of the following:
- aspirin
- theophylline, used for breathing problems
- medicines used for fits (epilepsy)
- antibiotics
- didanosine, used to treat HIV infection
- medicines for cancer
- medicines used to reduce your immune response (immunosuppressants)
- medicines used to treat diabetes
- medicines for heart problems or high blood pressure such as ‘ACE
inhibitors’ or water tablets (diuretics)
- medicines used to thin your blood (anticoagulants), such as warfarin

- any other medicine to treat gout.
Please tell your doctor or pharmacist if you are taking or have recently
taken any other medicines. This includes medicines obtained without a
prescription, including herbal medicines. This is because Zyloric can affect
the way some medicines work. Also some other medicines can affect the
way Zyloric works.
Taking Zyloric with food and drink
Take Zyloric with food and water.
Pregnancy and breast-feeding
Talk to your doctor before taking this medicine if you are pregnant, might
become pregnant or are breast-feeding.
Driving and using machines
You may feel drowsy, giddy or have problems with your co-ordination.
If this happens, do not drive or use any tools or machines.
Always take Zyloric exactly as your doctor has told you. You should check
with your doctor or pharmacist if you are not sure.
Taking this medicine
- Swallow the tablet with a drink of water.
- Take with or just after food.
Children (under 15 years)
- The usual dose ranges from 100 to 400 mg each day.
Adults (over 18 years)
- The usual dose ranges from 100 to 900 mg each day. You will usually
start on a dose of 100 to 300 mg each day.
Elderly (over 65 years)
- Your doctor will prescribe the lowest dose of Zyloric tablets that best
controls your symptoms.
If you have a serious kidney problem
- you may be asked to take less than 100 mg each day
- or you may be asked to take 100 mg at longer intervals than one day.
If you have dialysis two or three times a week, your doctor may prescribe a
dose of 300 or 400 mg which is to be taken straight after your dialysis.
If you take more Zyloric than you should
If you take more Zyloric than you should, talk to a doctor or go to hospital
straight away. Take the medicine pack with you.
If you forget to take Zyloric
- If you forget a dose, take it as soon as you remember it. However, if it is
nearly time for the next dose, skip the missed dose.
- Do not take a double dose to make up for a forgotten dose.
If you stop taking Zyloric
Do not stop taking your Zyloric without talking to your doctor.
If you have any further questions on the use of this product, ask your doctor
or pharmacist.
Like all medicines, Zyloric can cause side effects, although not everybody
gets them. The following side effects may happen with this medicine:
Allergic reactions (affects less than 1 in 10,000 people)
If you have an allergic reaction, stop taking Zyloric and see a doctor straight
way. The signs may include:
- skin rash, flaking skin, boils or sore lips and mouth
- very rarely signs may include sudden wheeziness, fluttering or tightness
in the chest and collapse.
Do not take any more tablets unless your doctor tells you to do so.

If you experience any of the following, stop your tablets and tell your
doctor as soon as possible:
Rare (affects less than 1 in 1000 people)
- Joint pain or Painful swelling in your groin, armpits or neck
- yellowing of the skin and eyes (jaundice)
- liver or kidney problems
- feeling sick (nausea) or being sick (vomiting), occasionally with blood
- you notice any changes to your skin, for example ulcers of the mouth,
throat, nose, genitals and conjunctivitis (red and swollen eyes),
widespread blisters or peeling,
- fever and chills, headache, aching muscles (flu-like symptoms) and
generally feeling unwell
- bleeding in the lips, eyes, mouth, nose or genitals
- Serious hypersensitivity reactions involving fever, skin rash, joint pain,
and abnormalities in blood and liver function tests (these may be signs of
a multi-organ sensitivity disorder).
Very rare (affects less than 1 in 10,000 people)
- bruising more easily than usual, or you may develop a sore throat or
other signs of an infection. Tell your doctor as soon as possible.
Occasionally Zyloric tablets may affect your blood or lymph system.
These effects usually occur in people with liver or kidney problems
- high temperature
- blood in your urine (haematuria)
- high levels of cholesterol in your blood (hyperlipidaemia)
- a general feeling of being unwell
- weakness, numbness, unsteadiness on your feet, feeling unable to move
muscles (paralysis) or loss of consciousness
- headache, dizziness, drowsiness or disturbance of your vision
- chest pain, high blood pressure or a slow pulse
- male infertility or erectile dysfunction
- enlargement of the breasts, in men as well as women
- a change in your normal bowel habit
- a change in taste
- cataracts
- hair loss or discolouration
- fits (convulsions)
- depression
- build up of fluid leading to swelling (oedema) particularly of your ankles
- feeling thirsty, tired and losing weight; these may be symptoms of
diabetes. Your doctor may wish to measure the level of sugar in your
blood to check if this is happening.
Reporting of side effects
If you get any side effects, talk to your doctor, pharmacist or nurse. This
includes any possible side effects not listed in this leaflet. You can also
report side effects directly via the Yellow Card Scheme at:
By reporting side effects, you can help provide more information on the
safety of this medicine.
Keep out of the sight and reach of children.
Do not take this medicine after the expiry date shown on the pack.
The expiry date refers to the last day of that month.
Do not store above 25oC.
Store in the original package.
If the tablets become discoloured or show any other signs of deterioration,
consult your pharmacist who will tell you what to do.
Medicines should not be disposed of via wastewater or household waste.
Return any unused or unwanted tablets to your pharmacist for disposal.
Only keep them if your doctor tells you to. These measures will help to
protect the environment.
What Zyloric contains
- The active substance is allopurinol.
- Each tablet contains 100 mg allopurinol.
- The other ingredients are lactose monohydrate, maize starch, povidone
and magnesium stearate.
What Zyloric looks like and contents of the pack
Zyloric tablets are tablets are white to off-white, round and marked with a
score line on one side and plain on the other side.
Available in pack sizes of 25, 30 and 100 tablets.

Manufacturer and Product Licence holder
Manufactured by Faes Farma, S.A., C/Máximo Aguirre, 14, Leiona,
Viscaya, E-48940, Spain.
Procured from within the EU by Product Licence holder:
Star Pharmaceuticals Ltd., 5 Sandridge Close, Harrow, Middlesex
HA1 1XD. Repackaged by Servipharm Ltd.

PL 20636/2621

Leaflet revision and issue date (Ref.) 25.11.14[2]
Zyloric is a trademark of Aspen Global Incorporated.

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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.