Mefenamic acid reduces pain and inflammation.
Take mefenamic acid with food and a glass of water.
If you take mefenamic acid regularly and it is nearly time for your next dose, skip the missed dose and take your next dose at the usual time. Otherwise, take the missed dose as soon as you remember. Do not take two doses at the same time.
Some medicines available without a prescription may react with mefenamic acid including:
Tell your pharmacist or doctor about all medicines or treatments that you may be taking, including vitamins, herbal products or recreational drugs.
|Side Effects||Recommended action|
Stomach pain, coughing or vomiting of blood, black bowel motions
Swollen lips, tongue, throat or face, trouble breathing
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|
Severe or persistent diarrhoea
Swollen feet or legs, short of breath
Bloody or cloudy pee
Ringing in the ears
|Tell your doctor|
Constipation or diarrhoea
|Tell your doctor if troublesome|
If you notice any other effects, discuss them with your doctor or pharmacist.
This leaflet contains important, but not all, information about this medicine.
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?
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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