Description
What this medicine is for
Mefenamic Acid 500mg Tablets are a non-steroidal anti-inflammatory drug (NSAID) used for the short-term relief of mild to moderate pain.
It is commonly used for period pain, muscle and joint pain, headaches, dental pain, and pain or inflammation associated with injury or arthritis.
How it works
Mefenamic acid works by reducing the production of prostaglandins, which are chemicals in the body responsible for causing pain, inflammation, and swelling.
By lowering these chemicals, it helps relieve pain and reduce inflammation effectively.
Key Benefits
- Effective NSAID pain relief for short-term use
- Commonly used for period pain, muscle aches, and headaches
- Helps reduce inflammation, swelling, and discomfort
- Provides targeted relief for mild to moderate pain conditions
- Prescription-strength treatment for more persistent pain symptoms
Directions for Use
- Always take exactly as prescribed by your doctor
- Typical dosing: 500mg initially, then 250mg every 6 hours if needed
- Do not exceed the prescribed dose
- Take with food to reduce stomach upset
- Use only for short-term pain relief
Common side effects
- Nausea
- Diarrhoea
- Heartburn or indigestion
- Dizziness
- Abdominal discomfort
Patient Information
Please refer to the official patient leaflet for full guidance on use, safety, and dosing.
https://www.medicines.org.uk/emc/files/pil.12891.pdf
Warnings
Do not use if you have a history of stomach ulcers or gastrointestinal bleeding.
Avoid use if you are allergic to NSAIDs such as ibuprofen or aspirin.
Use with caution if you have asthma, kidney, liver, or heart conditions.
Not suitable during pregnancy unless specifically advised by a healthcare professional.
Important information
Tell your healthcare provider if you:
- Are taking any other medicines, especially NSAIDs or blood thinners
- Have any long-term medical conditions
- Are pregnant, planning pregnancy, or breastfeeding
- Experience persistent or worsening pain
Please note: The product you receive may differ from the images shown above in terms of packaging.
Written and Reviewed by Medical Professionals
All of our content is created by qualified experts and carefully reviewed by medical professionals.
Prescription Only Medicine:
This medication is available only following completion of a short medical questionnaire and approval by a prescriber.


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