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  • What is Mefenamic acid?
    Mefenamic acid tablets are a targeted painkiller offering relief from menstrual cramps and associated pain. Each tablet contains the active ingredient mefenamic acid, which is a non-steroidal anti-inflammatory drug (NSAID).


    How does Mefenamic acid work?
    Period pains are caused by the shedding of the uterus lining (endometrium) that occurs approximately every month when a woman does not become pregnant. To help the body effectively shed this lining the uterus contracts which causes pain and cramps in the lower abdomen. The contraction is caused by the production of chemicals in the body called Prostaglandins. The pain can also radiate to the back and legs. Many women will know that periods can also cause other pains in the body such as headaches. Thankfully this medication can also reduce the unpleasant sensation associated with these.

    Mefenamic acid is a NSAID (Non-steroidal Anti-inflammatory drug). NSAIDs block the production of prostaglandins which in turn reduces the contraction of the uterus. This reduces the painful sensation during your period and also reduces the amount of blood lost.


    How quickly does Mefenamic acid work?
    Mefenamic acid usually take 30 - 60 minutes to take effect. As the dose is taken three times daily before and during your period you will have relief throughout the day and time of your period.

    If your pain is particularly bad you can take paracetamol at the same time and also use heat pads on the abdomen and lower back. Be sure to check you are only taking the recommended dose of each medication.

  • Mefenamic acid 500mg dosage
    The recommended dose is ONE tablet taken THREE times daily with or after food during your period.

     

     

  • Mefenamic acid side effects
    The most frequently reported side effects associated with mefenamic acid involve the gastrointestinal tract.

    • Stomach pain
    • Feeling sick
    • Bowel problems, like constipation or diarrhoea

    It can also cause

    • Feeling dizzy and/or sleepy
    • A ringing sound in your ears (tinnitus)
    • Headache
    • Heartburn

    In rare circumstances, Mefenamic acid can cause more serious side effects. In this instance, you must seek immediate medical advice. These side effects include:

    • Signs of intestinal bleeding - vomiting blood or dark particles resembling coffee grounds, black tarry stools, blood in stools.
    • Signs of a serious allergic reaction - asthma, wheezing, shortness of breath, swelling of facial features, rashes, rapid heart rate, collapse.
    • Stomach ulcer or perforation
    • Worsening of bowel problems, e.g. ulcerative colitis or Crohn’s disease
    • Kidney problems, showing symptoms of cloudy urine, more or less urine than usual, blood in urine, pain in the back and/or swelling, very rarely kidney failure
    • Liver problems showing symptoms such as yellowing of the skin and eyes (jaundice), pale coloured stools, dark urine
    • Blood disorders, showing symptoms such as unexplained/unusual bruising or bleeding, sore throat, mouth ulcers, fever, extreme paleness, weakness, exhaustion
    • High blood pressure, heart failure, swelling due to fluid build-up, stroke
  • Patient Information Leaflet: https://www.medicines.org.uk/emc/files/pil.12891.pdf

     

Frequently asked questions
  • What is Mefenamic Acid, and how does it help with period pain?

    Mefenamic Acid is a targeted painkiller specifically designed to alleviate menstrual cramps and associated pain. Its active ingredient, mefenamic acid, is a non-steroidal anti-inflammatory drug (NSAID) that works by blocking the production of prostaglandins, reducing uterine contractions and discomfort during menstruation.

  • How quickly does Mefenamic Acid work for period pain relief?

    Mefenamic Acid typically takes effect within 30 to 60 minutes after ingestion. With a recommended dosage of three times daily before and during your period, you can experience consistent relief throughout the day.

  • Can I take additional pain relievers with Mefenamic Acid for severe period pain?

    If your period pain is particularly severe, you can safely take paracetamol alongside Mefenamic Acid. Additionally, using heat pads on the abdomen and lower back can provide supplementary relief. Ensure you adhere to recommended dosages for both medications.

  • Are there any side effects associated with Mefenamic Acid?

    While generally well-tolerated, Mefenamic Acid may cause mild side effects such as stomach upset or headache. Consult with your healthcare provider if you experience any adverse reactions.

  • Are there any side effects associated with Mefenamic Acid?

    While generally well-tolerated, Mefenamic Acid may cause mild side effects such as stomach upset or headache. Consult with your healthcare provider if you experience any adverse reactions.

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