About mefenamic acid powder
Nonsteroidal anti-inflammatory drug (NSAID)
Used for
- Short-term relief of mild to moderate pain
- Fever reduction
Usual adult dose
For pain: 500 mg initially, then 250 mg every 6 hours as needed; usually no more than 7 days.
Usual dose in children
For children aged 6 months and older: 25 mg/kg/day in three divided doses, for up to 7 days.
Common side effects
- Stomach pain, nausea, or diarrhea
- Indigestion or heartburn
- Dizziness or headache
- Stomach ulcer or bleeding
Important warnings
- Can cause serious stomach bleeding or ulcers.
- Avoid with aspirin or other NSAIDs unless directed by a clinician.
- Use caution with kidney, heart, or liver disease, asthma, or dehydration.
- Use the lowest effective dose for the shortest time.
Pregnancy
Avoid from 20 weeks unless specifically advised; avoid from 30 weeks because it may harm the fetus.
Breastfeeding
Short-term use is generally considered compatible, but seek professional guidance, especially for newborns or premature infants.
Interactions
- Blood thinners and antiplatelet medicines can increase bleeding.
- Other NSAIDs, including ibuprofen and naproxen, increase side effects.
- Some blood pressure medicines and diuretics may work less well.
- Lithium and methotrexate levels may increase.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.