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NZ Formulary

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Audio selected: English. Listen to the whole sheet here, or play individual sections.
  • ../../audio/en/full/diclofenac.mp3


  • ../../audio/en/sections/diclofenac/2.0_Title_Pronounce_Diclofenac (English).mp3

What does it do?

  • What does it do?
  • English
  • ../../audio/en/sections/diclofenac/3.0_What does it do_Diclofenac (English).mp3

Diclofenac reduces pain and inflammation.

How should you take it?

  • How should you take it?
  • English
  • ../../audio/en/sections/diclofenac/4.0_Admin_Diclofenac (English).mp3

Take diclofenac tablets with food and a glass of water.
Swallow the coated and slow release tablets whole.
Dissolve the dispersible tablets in water before taking.
Remove the wrapper before inserting the suppositories into the rectum.

What if you forget a dose?

  • What if you forget a dose?
  • English
  • ../../audio/en/sections/diclofenac/5.0.4_Missed dose_Occasional (English).mp3

Should an occasional dose be missed it need not be taken later.

Can you take other medicines?

  • Can you take other medicines?
  • English
  • ../../audio/en/sections/diclofenac/6.0_Other meds_Diclofenac (English).mp3

Some medicines available without a prescription may react with diclofenac including:

  • anti-inflammatories, such as ibuprofen (e.g. Nurofen®), or aspirin (e.g. Disprin®, in doses used for pain relief). These can also be found in some cold and flu medicines (e.g. Nurofen Cold and Flu®), and creams or gels (e.g. Voltaren Emulgel®)
  • low-dose aspirin (e.g. Cartia®)

Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products or recreational drugs.

What side effects might you notice?

  • What side effects might you notice?
  • English
  • ../../audio/en/sections/diclofenac/7.0_Side effects_Diclofenac (English).mp3
Side EffectsRecommended action

Stomach pain, coughing or vomiting of blood, black bowel motions

Swollen lips, tongue, throat or face, trouble breathing

Chest pain

Symptoms of liver problems including: yellow skin or eyes, itching, dark urine, pale bowel motions, abdominal pain

Reduced number of blood cells that help your blood to clot - symptoms include: easy or unusual bruising or bleeding

Tell your doctor immediately

Swollen feet or legs, short of breath

Bloody or cloudy pee

Ringing in the ears

Tell your doctor


Indigestion, nausea, constipation or diarrhoea

Skin rash

Anal irritation with suppository use

Tell your doctor if troublesome

If you notice any other effects, discuss them with your doctor or pharmacist.

Other information:

  • Other information:
  • English
  • ../../audio/en/sections/diclofenac/8.0_Other info_Diclofenac.mp3
  • Tell your doctor if you have heart, kidney, liver, stomach or bowel problems, high blood pressure, asthma, or if you have ever had a stroke or TIA (mini-stroke).
  • Tell your doctor if you have had problems with aspirin or anti-inflammatories.
  • Tell your doctor if you are pregnant, planning to become pregnant, or breastfeeding.
  • In most cases, paracetamol and/or codeine may be safely used while taking diclofenac.

This leaflet contains important, but not all, information about this medicine.

  • ../../audio/en/sections/diclofenac/9.0_Disclaimer (English).mp3

Prepared by the PILs Committee at Christchurch Hospital, Canterbury District Health Board, New Zealand. October 2020

For more general information about this sheet annd its contents, see: What does a My Medicines sheet cover?

About My Medicines

My Medicines Patient Information Leaflets (PILs) contain important, but not all, information about the medicines they describe.

For more information about the sheets, see: What does a My Medicines sheet cover?

My Medicines is developed by a team at the Canterbury District Health Board. Our team is made up of doctors, pharmacists, and a non-medical person to help us keep to plain language. We also discuss our information with specialist health professionals or groups when needed