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Active substance(s): DICLOFENAC POTASSIUM

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Diclofenac potassium 50mg tablets
Diclofenac potassium
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 further questions, please ask your doctor or your pharmacist.
 This medicine has been prescribed only for you personally and you should not pass it on to others.
It may harm them, even if their symptoms are the same as yours.
 If you have any of the side effects, or if you notice any not listed, please tell your doctor or
In this leaflet:
1. What Diclofenac potassium tablets are and what they are used for
2. Before you take Diclofenac potassium tablets
3. How to take Diclofenac potassium tablets
4. Possible side effects
5. How to store Diclofenac potassium tablets
6. Further information

1. What Diclofenac potassium tablets are and what they are used for
Diclofenac potassium tablets belong to a group of medicines called non-steroidal anti-inflammatory drugs
(NSAIDs), which are used to reduce pain and inflammation in the following conditions:
 Sprains, strains and other injuries
 Pain and inflammation following surgery
 Gout
 Other painful conditions affecting the joints and muscles such as backache, rheumatoid arthritis,
osteoarthritis, ankylosing spondylytis and pyrophosphate arthropathy.
The tablets can also be used to relieve the symptoms associated with migraine attacks in adults.

2. Before you take Diclofenac potassium tablets
Do not take Diclofenac potassium tablets if you:
 are allergic (hypersensitive) to diclofenac potassium or any of the other ingredients in the tablet (see
section 6)
 have a peptic ulcer (ulcer in your stomach or duodenum) or bleeding in your stomach, or have had
two or more episodes of peptic ulcers, stomach bleeding or perforation
 have previously had a reaction (asthma, hives or a cold) caused by an allergy to salicylates (e.g.
aspirin) or other non-steroidal pain killers
 suffer from severe kidney, heart or liver failure
 if you have established heart disease and /or cerebrovascular disease e.g. if you have had a heart
attack, stroke, mini-stroke (TIA) or blockages to blood vessels, to the heart or brain, or an operation
to clear, or bypass, blockages
 if you have, or have had, problems with your blood circulation (peripheral arterial disease)
 are pregnant, and in the last three months (last trimester) of pregnancy.

Make sure your doctor knows before you are given Diclofenac potassium tablets if you:
 smoke
 have diabetes
 have angina, blood clots, high blood pressure, raised cholesterol or raised triglycerides
 have a history of gastrointestinal disease e.g. ulcerative colitis or Crohn's disease
 have reduced heart, kidney, or liver function
 suffer from any blood clotting disorder
 have or have had asthma, COPD which affects your breathing, a chest infection or hayfever
 suffer from liver porphyria (disorder of the red blood pigment)
 have had or need to have surgery
 are elderly (over 65), particularly if you are frail or underweight
 are being treated with diuretics (water tablets) or COX-2 inhibitors such as celecoxib.
Medicines such as diclofenac may be associated with a small increased risk of heart attack (“myocardial
infarction”) or stroke. Any risk is more likely with high doses and prolonged treatment. Do not exceed the
recommended dose or duration of treatment.
Side effects may be minimised by using the lowest effective dose for the shortest duration necessary.
Medicines such as diclofenac may very rarely cause an allergic reaction (hypersensitivity) in patients who
have not taken the medicine before.
Taking diclofenac may also mask the symptoms of an infection.
Whilst you are taking these tablets, your doctor may want to give you a check-up from time to time.
Diclofenac potassium tablets are not recommended for children under the age of 14.
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.
 colestipol and cholestyramine – these may reduce the effect of Diclofenac.
 medicines to treat diabetes – a dose adjustment of these medicines may be necessary as blood sugar may
drop too low
 anticoagulants and anti-platelet medicines – (e.g.warfarin) - these may increase the risk of bleeding
 diuretics (water tablets) – the effect of these may be decreased. Potassium-sparing diuretics may increase
the potassium levels in the blood
 lithium (medicine to treat depression) the blood levels of these medicines may be increased if taken with
 cytotoxic medicines (e.g. methotrexate to treat cancers) – should not be taken less than 24 hours before
or after Diclofenac potassium tablets - the blood levels of these medicines may be increased if taken with
 ciclosporin – a dose adjustment may be necessary as this may harm kidney function
 quinolones (to treat infections, e.g. ciprofloxacin and levofloxacin) – these may cause convulsions (fits)
 steroid tablets – these may increase the risk of bleeding in the stomach
 other NSAIDs (e.g. aspirin) – these may increase the risk of side effects
 medicines to treat high blood pressure (ACE-inhibitors, beta blockers) – the blood pressure lowering
effect may be reduced
 mifepristone (used to induce abortion) – effect of mifepristone may be reduced by NSAIDs
 cardiac glycosides (e.g. digoxin) used to treat heart failure. Use with Diclofenac may worsen heart
failure or increase blood levels of these medicines.
 Tacrolimus (an immunosuppressant) - these may increase the risk of kidney damage.
 Zidovudine (an antiretroviral drug used to treat HIV) - combination with Diclofenac may increase the
risk of blood disorders
 Digoxin - the blood level of digoxin may be increased if taken with Diclofenac.
 Selective Serotonin Reuptake Inhibitors (SSRIs) (medicines to treat depression) – may increase the risk
of bleeding in the stomach

 Phenytoin (an epilepsy medicine) - the blood level of this medicine may be increased if taken with
 Potent CYP2C9 Inhibitors (e.g. sulfinpyrazone and voriconazole) - the blood level of Diclofenac may
be increased if taken with these medicines.
Laboratory tests
Frequent liver and kidney function tests and monitoring of blood counts are necessary if taken for
more than a few days.
Pregnancy and breastfeeding
Ask your doctor or pharmacist for advice before taking any medicine.
It is not recommended that you take Diclofenac during the first 6 months of pregnancy as the risk of
miscarriage or impact on development of your baby is increased. However, your doctor may prescribe
Diclofenac for you during the first six months of pregnancy if he/she feels the benefit to you outweighs the
risk. You must not however take Diclofenac during the last 3 months of pregnancy as damage to the foetus
and reduced labour may occur.
Small amounts of Diclofenac may pass into breast milk and so Diclofenac should not be used whilst
Female fertility
Diclofenac may make it more difficult to become pregnant. You should inform your doctor if you are
planning to become pregnant or if you have problems becoming pregnant.
Driving and using machines
Some patients may experience side effects such as dizziness, drowsiness, feel like you may fall asleep,
fatigue and visual disturbances which may affect their ability to drive or operate machinery. Make sure you
are not affected before driving or operating machinery.
Important information about some of the ingredients
If you are allergic to peanut or soya do not take this medicine, as it contains soya.

3. How to take Diclofenac potassium tablets
Always take Diclofenac potassium tablets exactly as your doctor has told you. If you are unsure check with
your doctor or pharmacist. Diclofenac potassium tablets must not be taken long-term, blood tests should be
carried out if taken for more than a few days.
To minimise side-effects, you should take the lowest effective dose for the shortest time necessary to relieve
your symptoms.
The tablets must be swallowed whole with a glass of water, with or after food.
The usual dose is:
 To treat pain and inflammation
Adults - 75mg to 150mg a day in two or three doses.
Elderly patients – a lower dose may be used. If you are frail or have a low body weight, your doctor
may ask you to go back to see him regularly for the first 4 weeks of treatment, to make sure that you are
not experiencing any side effects.
Children over 14 years of age – 75mg to 100mg daily, in two or three doses.

To treat the symptoms of migraine in adults
50mg taken when the first signs of a migraine attack appear. Another 50mg taken 2 hours after the first
dose if needed and then every 4 to 6 hourly. You should not take more than 200mg in 24 hours.

These tablets are not suitable for the treatment of migraine in children.
If you take more Diclofenac potassium tablets than you should:
Contact your doctor, emergency room or pharmacist if you have taken more Diclofenac potassium tablets
than stated in this leaflet or more than what your doctor has prescribed (and you feel unwell).
If you forget to take Diclofenac potassium tablets
Do not take a double dose to make up for forgotten dose. Continue the treatment as advised by your doctor.

4. Possible side effects
Like all medicines, Diclofenac potassium tablets can cause side effects, although not everybody gets them.
If you suffer from any of the following rare, or very rare, side effects at any time during your treatment,
STOP TAKING the medicine and seek immediate medical help:
 chest pains
 drooping in your mouth or eye, unable to lift your arms, blurred speech or unable to speak as these
are symptoms of a stroke
 pass blood in your faeces (stools / motions)
 pass black tarry stools
 vomit any blood or dark particles that look like coffee grounds
 an allergic reaction such as itching, rash, low blood pressure, swelling of the face, lips, tongue,
mouth and throat, which may cause shortness of breath or difficulty swallowing
 a form of meningitis (aseptic) causing a combination of symptoms such as headache, fever, stiff
neck, tiredness, muscle pain, sore throat and disorientation.
 yellowing of the skin or the whites of your eyes
 stomach pain, indigestion, heartburn, wind, nausea (feeling sick), vomiting (being sick) or other
abnormal stomach symptoms.
 asthma or asthma that has been made worse by this medicine.
 severe rash, sometimes seen as pinky red spots with clear or violet centres.
 an unexpected change in the amount of urine produced and/or its appearance.
Tell your doctor if you experience any of the following symptoms:
Common (affecting up to 1 in 10 people)
 headache
 feeling, or being, sick
 diarrhoea
 pain or swelling of your stomach or abdomen, heartburn
 anorexia
 dizziness or feeling light-headed

Rare (affecting up to 1 in 1000 people)

reduced, blurred or double vision
swelling of feet or ankles
a feeling of no energy
feeling sleepy or drowsy
rash or raised lumps on your skin
a feeling of being uncomfortable, general aches and pains

Very Rare (affecting less than 1 in 10,000 people)

if you have an irritable bowel disease, such as colitis or Crohn’s disease, the symptoms may get
depression, anxiety, memory loss, or confusion
anaemia making you feel tired or lethargic
your heart beats too quickly or irregularly; chest pains

impotence (difficulty getting an erection)
ringing in the ears
strange visions or sounds
difficulty sleeping
mouth ulcers or a sore mouth
pins and needles or sensitivity to touch
your blood does not clot easily
low resistance to infections, fever
spotting or unexplained bruising of the skin, nose bleeds
hair loss
taste disturbances


sudden loss of vision
change in taste
generally feeling unwell

Medicines such as Diclofenac potassium tablets may be associated with a small increased risk of heart attack
or stroke.

Reporting of side effects
If you get any side effects, talk to your doctor or pharmacist. 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.

5. How to store Diclofenac potassium tablets
Keep out of the reach and sight of children.
This medicine has no special storage precautions.
Do not use after the expiry date stated on the carton. Unused tablets should be taken back to the
pharmacist for safe disposal.
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. Further information
What Diclofenac potassium tablets contain
The active substance (the ingredient that makes the tablet work) is diclofenac. Each tablet contains 50mg
diclofenac potassium.
The tablets also contain silica colloidal anhydrous, sodium starch glycollate, povidone, maize starch, calcium
hydrogen phosphate anhydrous, magnesium stearate, polyvinyl alcohol partially
hydrolysed, titanium dioxide E171, talc, lecithin soya E322, iron oxide red, iron oxide yellow and xanthan
gum E415.
What Diclofenac potassium tablets look like and contents of the pack
The 50mg tablets are reddish brown, round, unscored, biconvex 9mm film coated tablets.
Pack sizes
Blister packs: 7, 12, 21, 28, 30, 50, 56, 60, 84 and 100 film coated tablets.
Plastic bottles: 100 and 500 film-coated tablets.
(Not all packs sizes may be available)

Marketing Authorisation Holder
Focus Pharmaceuticals Limited, Capital House, 85 King William Street, London EC4N 7BL, United
Actavis hf., Reykjavikurvegi 78, PO Box 420, IS-222, Hafnarfjordur, Iceland.
This leaflet was last revised in April 2016.

Other sources of information

For information in large print, audio CD or Braille please telephone 00 44
(0)1283 495 280 or email

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Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.