Mefenamic acid is an anti-inflammatory medicine used for short-term pain relief. It works by reducing prostaglandins, chemicals that cause inflammation and cramping. This helps ease period pain, muscle aches and mild injury-related discomfort.

Mefenamic acid is commonly prescribed for period pain, pelvic cramping, muscle pain, toothache and pain related to minor injuries. Because it reduces both inflammation and spasm-type discomfort, many people find it particularly effective for menstrual symptoms.

Take one capsule up to three times daily with food, usually for the shortest time needed. Swallow it with water and avoid taking more than the prescribed dose. Do not combine it with other anti-inflammatories unless a clinician advises otherwise.

Relief often begins within one hour, with the full effect developing as inflammation reduces. Taking the capsule regularly during the first day of symptoms usually provides better control, especially for period pain.

Side effects may include stomach discomfort, nausea, indigestion, diarrhoea or headache. Taking the capsule with food reduces irritation. Seek urgent help if you notice black stools, vomiting blood or severe abdominal pain.

Avoid it if you have stomach ulcers, severe heart, kidney or liver disease, or if you are in late pregnancy. People taking blood thinners, lithium or other anti-inflammatories should check with a clinician first.

Yes. It can be used with paracetamol, which works differently. Avoid taking it with ibuprofen, naproxen or aspirin unless specifically advised, as this increases the chance of stomach irritation.

Yes. Mefenamic acid is one of the most effective treatments for painful periods and can also reduce heavy bleeding in some people. It works best when started at the first sign of cramps and continued for a few days.

Mefenamic acid can help reduce cramping associated with copper IUDs, especially during the first few months after insertion. If pain remains severe or long-lasting, it is important to seek further clinical advice.

Yes. Always take mefenamic acid with meals or a snack, as this significantly reduces stomach irritation. Even people with strong digestion can develop discomfort if they use it on an empty stomach.

Light drinking is generally safe, but alcohol increases the risk of stomach irritation and indigestion. People with reflux, ulcers or sensitive digestion should avoid alcohol while taking anti-inflammatories.

Many people use it safely for several days each month. However, those with stomach issues, long-term health conditions or frequent heavy bleeding should have regular reviews to ensure continued safety.

Yes. While food reduces irritation, anti-inflammatories can still cause indigestion or, rarely, ulcers. People with a history of stomach issues may need an alternative or a protective medicine. Monitor for persistent discomfort.

If symptoms persist despite correct dosing, you may benefit from switching to a different anti-inflammatory or combining treatment with paracetamol. Ongoing severe pain may require assessment for other causes.

Yes. It can be supplied from a registered UK pharmacy after a brief consultation to check it is safe for you. You may be asked about stomach problems, pregnancy, other medicines and any health conditions before approval.