Visit our Location
381 Church Lane, Kingsbury,
London, NW9 8JB
Opening Hours
Mon - Friday: 9AM - 5PM

Mefenamic Acid 500mg Tablets

28, 56, 84


Mefenamic Acid Tablets contain the active substance mefenamic acid. Mefenamic acid belongs to a group of medicines called non-steroidal anti-inflammatory drugs (NSAIDs).

Information Leaflet
SKU: N/A Categories: ,


Mefenamic Acid Tablets contain the active substance mefenamic acid. Mefenamic acid belongs to a group of medicines called non-steroidal anti-inflammatory drugs (NSAIDs).

Mefenamic Acid Tablets are used to treat the following:

  • Symptoms of pain or swelling associated with arthritis, rheumatoid or muscular
  • Pain associated with trauma or surgery.
  • Muscle or dental pain, headaches.
  • Pain after childbirth.
  • Period pain or abnormally heavy periods.

Additional information

Pack Size

28, 56, 84

Uses / Instructions


Talk to your doctor or pharmacist before taking Mefenamic Acid Tablets if:

  • you are taking any other NSAIDs such as ibuprofen, diclofenac;
  • you are taking any other anti-inflammatory medicines, including steroids such as
  • you are taking medicines such as warfarin or clopidogrel, which are used to thin the blood;
  • you are taking selective serotonin medicines such as paroxetine, which are
  • you have liver or kidney problems, as your doctor may monitor their function before and during treatment;
  • you are trying to become pregnant (see section “Fertility”);
  • you are elderly (see section 3 “How to take Mefenamic Acid Tablets”);
  • previously taking painkillers such as aspirin have given you an upset stomach, or you have a history of stomach or digestive tract problems. Patients taking mefenamic acid can experience bleeding in the stomach or gut;
  • you are going to have a major operation or have a bleeding disorder, as mefenamic acid can affect how your blood clots (it can make you bleed more or for longer periods of time);
  • you have or have a history of asthma, as it may cause difficulties in breathing;
  • you have epilepsy;
  • you have a disorder of the connective tissue, such as Systemic Lupus Erythematosus (SLE);
  • you are dehydrated with symptoms of thirst, dry mouth, dry skin, dark urine, headache;
  • you have problems with your heart, have previously had a stroke, or you think you may be at risk of these conditions (e.g. if you have diabetes, high blood pressure, are a smoker, or have high cholesterol). Your doctor may carry out additional monitoring.

Side Effects

Tell your doctor if you get any of the following side effects:

  • vertigo (head spinning);
  • fatty faeces;
  • sweating;
  • palpitations (rapid heartbeat);
  • mental confusion;
  • appetite loss;
  • constipation or bloating;
  • blurred vision, eye irritation;
  • feeling ill (malaise);
  • tinnitus (buzzing or ringing in the ears);
  • tingling or numbness of the hands or feet;
  • if you have diabetes, sudden and  poor blood sugar control – your doctor or pharmacist can help measure your blood sugar levels;
  • asthma, or asthma which may be worse than usual;
  • swelling of your hands or around your ankles/feet;
  • mouth pain, which may show as pain or ulcers of the tongue, cheeks, lips, throat or gums;
  • dizziness, drowsiness, feeling lethargic and tired;
  • symptoms of low blood pressure, e.g. light-headedness;
  • reactions to the sun such as red, painful or swollen skin. Whilst taking mefenamic acid, do not use a sun bed, sunbathe or expose your skin to artificial ultraviolet (UV) light;
  • depression;
  • inability to sleep;
  • hallucinations;
  • nervousness;
  • ear pain.


The active substance is mefenamic acid.

Each tablet contains 500 mg mefenamic acid. –

The other ingredients are lactose monohydrate, pregelatinised starch, croscarmellose sodium, , povidone, microcrystalline cellulose, colloidal silicone dioxide, magnesium stearate, Opadry II Yellow [hypromellose, lactose monohydrate, titanium dioxide (E171), macrogol, iron oxide yellow (E 172), talc, iron oxide red (E 172)].

See the patient information leaflet of the brand you receive as different brands have different other ingredients.


There are no reviews yet.

Be the first to review “Mefenamic Acid 500mg Tablets”

Your email address will not be published. Required fields are marked *

0 item
My Cart
Empty Cart