WHAT IS MEFENAMIC ACID?
Mefenamic acid should be used to treat primary dysmenorrhea (period pain) that is not adequately controlled by suitable lifestyle changes and use of other painkillers such as Ibuprofen and Paracetamol. The brand name for this medication is Ponstan.
HOW DOES MEFENAMIC ACID WORK?
Mefenamic Acid is an NSAID which acts to reduce the production of prostaglandins which is a chemical released during a period. Prostaglandins work to cause increased contraction of the muscular wall of the uterus, which leads to an increase in pain. By reducing the production of prostaglandins, NSAIDs such as Mefenamic Acid reduce the contraction of the muscular wall of the uterus and subsequently reduce the pain experienced during a period.
HOW DO I USE MEFENAMIC ACID?
You should take ONE 500mg tablet THREE times a day for up to a maximum of THREE days during any one single menstrual cycle at the onset of period pain or bleeding, whichever is earlier. It should be taken with or after food, and swallowed whole with water. If you find Mefenamic Acid is not effective enough to adequately control your pain, we would recommend speaking to your GP for further advice and assistance.