Mefenamic Acid
System: AllopathyClass: NSAIDComposition: Mefenamic AcidPrescription: Prescription OnlyEssential medicine (NLEM): No
Mefenamic acid is a painkiller widely used in India for period pain and fever in children.
Common brands
- Meftal 500
- Meftal-Spas (with dicyclomine)
Dosage forms
- Tablet
- Suspension
Uses
- Period pain
- Mild to moderate pain
- Fever (as prescribed)
How it works
Blocks prostaglandins that cause pain and cramps.
How to take
Take after food; usually for no more than a few days.
Common side effects
- Acidity
- Nausea
- Diarrhoea
Serious side effects — get medical help
- Stomach bleeding
- Kidney injury
- DRESS skin reaction (rare)
Who should not take it
- Active ulcer
- Kidney disease
- Suspected dengue
Interactions
- Blood thinners
- Other NSAIDs
Pregnancy & breastfeeding
Avoid in late pregnancy.
Alcohol & driving
Avoid alcohol.
Storage
Store below 30°C.
Prescribed by
Brands available in India
Frequently asked questions
What is Mefenamic Acid used for?
Period pain, Mild to moderate pain, Fever (as prescribed)
What are the side effects of Mefenamic Acid?
Acidity, Nausea, Diarrhoea
How should I take Mefenamic Acid?
Take after food; usually for no more than a few days.
Who should not take Mefenamic Acid?
Active ulcer, Kidney disease, Suspected dengue
Medically reviewed by
Medical review pending
Last updated
11 October 2026
Sources
- National List of Essential Medicines (NLEM) 2022, MoHFW
- National Formulary of India, Indian Pharmacopoeia Commission
- CDSCO approved drug information
This information is for general awareness and does not replace advice from a qualified doctor. Do not start, stop or change any medicine without medical advice.