Generic Name: mefenamic-acid, Oral capsule

Generic Name:

mefenamic-acid, Oral capsule

All Brands

SECTION 1 of 5

Highlights for mefenamic-acid

Oral capsule
1
MEFENAMIC ACID (me fe NAM ik AS id) is a non-steroidal anti-inflammatory drug (NSAID). It is used to reduce swelling and to treat pain. This medicine may be used to treat osteoarthritis and rheumatoid arthritis. It is also used to treat painful menstrual periods.
2 3 4
Talk to your healthcare provider if you have any of these conditions.
5
Know what to watch for and get tips for reducing your risks while taking this drug.
SECTION 2 of 5

mefenamic-acid Side Effects

Oral capsule

Side effects that you should report to your doctor or health care professional as soon as possible:

  • allergic reactions like skin rash, itching or hives, swelling of the face, lips, or tongue
  • black tarry stools
  • blurred vision
  • breathing problems
  • chest pain
  • general ill feeling or 'flu-like' symptoms
  • high blood pressure
  • right upper belly pain
  • redness, blistering, peeling or loosening of the skin, including inside the mouth
  • slurring of speech
  • stomach pain or cramps
  • sudden weight gain or swelling
  • trouble passing urine or change in the amount of urine
  • unusual bleeding or bruising
  • unusually weak or tired
  • vomit that looks like blood or coffee grounds
  • yellowing of the eyes or skin

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

  • diarrhea or constipation
  • dizziness, drowsiness
  • gas or heartburn
  • headache
  • nausea, vomiting
  • unusually sensitive to the sun
SECTION 3 of 5

mefenamic-acid May Interact with Other Medications

Oral capsule

Do not take this medicine with any of the following medications:

  • cidofovir
  • ketorolac
  • methotrexate

This medicine may also interact with the following medications:

  • alcohol
  • alendronate
  • antacids with magnesium
  • aspirin and aspirin-like medicines
  • diuretics
  • herbal products that contain feverfew, garlic, ginger, or ginkgo biloba
  • lithium
  • medicines for high blood pressure
  • medicines that treat or prevent blood clots like warfarin
  • other NSAIDs, medicines for pain and inflammation, like ibuprofen or naproxen
  • pemetrexed
Disclaimer: Our goal is to provide you with the most relevant and current information. However, because drugs interact differently in each person, we cannot guarantee that this information includes all possible interactions. This information is not a substitute for medical advice. Always speak with your healthcare provider about possible interactions with all prescription drugs, vitamins, herbs and supplements, and over-the-counter drugs that you are taking.
SECTION 4 of 5

How to Use mefenamic-acid

Oral capsule

Take this medicine by mouth with a full glass of water. Follow the directions on the prescription label. Take this medicine with food if your stomach gets upset. Try to not lie down for at least 10 minutes after you take the medicine. Take your medicine at regular intervals. Do not take your medicine more often than directed. Long-term, continuous use may increase the risk of heart attack or stroke.

A special MedGuide will be given to you by the pharmacist with each prescription and refill. Be sure to read this information carefully each time.

Talk to your pediatrician regarding the use of this medicine in children. While this drug may be prescribed for children as young as 14 years old for selected conditions, precautions do apply.

Patients over 65 years old may have a stronger reaction and need a smaller dose.

What should I tell my health care provider before I take this medicine?

They need to know if you have any of these conditions:

  • cigarette smoker
  • drink alcohol-containing beverages
  • heart disease or circulation problems like heart failure or leg edema (fluid retention)
  • high blood pressure
  • kidney disease
  • liver disease
  • recent heart surgery
  • stomach bleeding or ulcers
  • swelling of ankles or hands
  • taking medicines that treat or prevent blood clots like warfarin
  • taking steroid medicines like prednisone or cortisone
  • an unusual or allergic reaction to mefenamic acid, aspirin, other NSAIDs, other medicines, foods, dyes, or preservatives
  • pregnant or trying to get pregnant
  • breast-feeding
What if I miss a dose?

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

What should I watch for while using this medicine?

Tell your doctor or health care professional if your pain does not get better. Talk to your doctor before taking another medicine for pain. Do not treat yourself.

This medicine does not prevent heart attack or stroke. In fact, this medicine may increase the chance of a heart attack or stroke. The chance may increase with longer use of this medicine and in people who have heart disease. If you take aspirin to prevent heart attack or stroke, talk with your doctor or health care professional.

Do not take medicines such as ibuprofen and naproxen with this medicine. Side effects such as stomach upset, nausea, or ulcers may be more likely to occur. Many medicines available without a prescription should not be taken with this medicine.

This medicine can cause ulcers and bleeding in the stomach and intestines at any time during treatment. Do not smoke cigarettes or drink alcohol. These increase irritation to your stomach and can make it more susceptible to damage from this medicine. Ulcers and bleeding can happen without warning symptoms and can cause death.

Where should I keep my medicine?

Keep out of the reach of children.

Store at room temperature between 15 and 30 degrees C (59 and 86 degrees F). Throw away any unused medicine after the expiration date.

SECTION 5 of 5

How Much Does mefenamic-acid Cost?

Oral capsule
We've partnered with GoodRX so you can compare prices and save money on your next prescription. Check out the lowest cash prices below and enter your zip code to find the best deal near you.

Compare prices and save money on your next refill!

Lowest price for mefenamic-acid

Rite-Aid $187.00
Walgreens $203.72
CVS Pharmacy $275.42
These represent the lowest cash prices for mefenamic-acid and may be lower than your insurance.

Find the lowest prices of mefenamic-acid near you

These represent the lowest cash prices for mefenamic-acid and may be lower than your insurance.

Last Updated: June 25, 2009

The Healthline Site, its content, such as text, graphics, images, search results, and other material contained on the Healthline Site ("Content"), its services, and any information or material posted on the Healthline Site by third parties are provided for informational purposes only. None of the foregoing is a substitute for professional medical advice, examination, diagnosis, or treatment. Always seek the advice of a physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on the Healthline Site. If you think you may have a medical emergency, call your doctor or 911 immediately. Please read the Terms of Service for more information regarding use of the Healthline Site.
Content licensed by
Gold Standard Logo

Healthline - Gold Standard License

Terms of Use

Licensee provides access to Alchemy provided by Gold Standard, Inc. ("Gold Standard"). Although Gold Standard makes reasonable efforts to ensure the accuracy and reliability of Alchemy, End User acknowledges and agrees that Licensee, its affiliates, and their respective officers, directors, employees and information providers and Gold Standard, its affiliates, its licensors, and their respective officers, directors, employees and information providers will not be held liable for any damages suffered or incurred by End User or any third person arising out of: a) any faults, interruptions or delays in Alchemy or its delivery, b) any use of or reliance on Alchemy by any person, or c) any inaccuracies, errors or omissions in Alchemy, irrespective of however such faults, interruptions, delays, inaccuracies, errors or omissions arise. Gold Standard shall not be liable to End User for any loss, cost or damages resulting from any delays in delivery and/or non-delivery of Alchemy or its content. End User acknowledges and agrees that its sole and exclusive remedy in the event of such delay is to not accept these terms and conditions. Gold Standard does not represent or warrant that Alchemy will meet the objectives or needs of End User or any third party. Gold Standard makes no warranty of merchantability of Alchemy or of the fitness of Alchemy for any purpose.

About Gold Standard

The Gold Standard editorial staff develops clinically-based drug information content through an independent, peer-reviewed process. Content updates to the database include new FDA-approved drugs, new non-prescription and herbal therapies, newly published information regarding FDA label changes and relevant clinical studies affecting off-label utilization. Editors do not have any significant financial relationships with the industry that would introduce bias in the editing or review of database content.

Read This Next

Statins: Do They Cause Cancer?
Statins: Do They Cause Cancer?
What I Wish I Knew About Breast Cancer: Your Views
What I Wish I Knew About Breast Cancer: Your Views
Understanding Compulsive Eating Before Your Period
Understanding Compulsive Eating Before Your Period
Advertisement
Advertisement
Advertisement