Mefenamic Acid

Mefenamic Acid

Price range: £12.99 through £15.99

Mefenamic acid is a non-steroidal anti-inflammatory drug (NSAID) used to relieve mild to moderate pain, including period pain (menstrual cramps), muscle pain, toothache, and headaches. It works by reducing the hormones (prostaglandins) that cause pain, inflammation, and heavy bleeding during menstruation.

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Mefenamic acid is a non-steroidal anti-inflammatory drug (NSAID) used to relieve mild to moderate pain, including period pain (menstrual cramps), muscle pain, toothache, and headaches. It works by reducing the hormones (prostaglandins) that cause pain, inflammation, and heavy bleeding during menstruation.

Directions

  • Adults: The usual dose for period pain is 500 mg initially, then 250 mg every 6 hours as needed.
  • Take with food or milk to reduce stomach upset.
  • Do not exceed the prescribed dose or duration (typically only for a few days during menstruation).
  • Swallow tablets whole with water.

Ingredients

  • Active ingredient: Mefenamic acid 250 mg or 500 mg.
  • Excipients: May include lactose, starch, magnesium stearate, cellulose, and film-coating agents (varies by manufacturer).

Warnings

  • Do not take if you are allergic to NSAIDs (e.g., ibuprofen, aspirin) or have a history of stomach ulcers, gastrointestinal bleeding, severe heart, kidney, or liver disease.
  • Not suitable for people with active asthma triggered by NSAIDs.
  • Avoid alcohol while taking this medicine.
  • Use with caution in patients with cardiovascular risks or high blood pressure.
  • Not recommended in pregnancy unless advised by a doctor.

Possible Side Effects

  • Common: Indigestion, nausea, abdominal pain, diarrhoea, headache, dizziness.
  • Uncommon: Rash, drowsiness, heartburn.
  • Serious (seek help): Stomach ulcer/bleeding (black stools, vomiting blood), severe allergic reaction (swelling, breathing difficulty), jaundice, chest pain.