Your doctor may take a blood test to monitor your liver and make sure this drug is safe for you. Call your doctor immediately if you notice symptoms of liver damage, such as:. This might be a severe skin disorder such as exfoliative dermatitis, Stevens-Johnson syndrome, or toxic epidermal necrolysis, all of which can be fatal.
It may cause the blood vessel that supplies nutrients and oxygen to the fetus to close too early. Taking it again could be fatal. These include ibuprofen, naproxen, diclofenac, and meloxicam.
Consuming drinks that contain alcohol with mefenamic acid increases your risk of stomach bleeding or ulcer. For people with heart disease, including heart failure and high blood pressure: Mefenamic acid may cause an increased risk of heart problems, including heart attack, stroke, or blood clot.
Your risk may be higher if you already have heart disease and take this medication for a longer period of time. Mefenamic acid may cause you to retain water and can make high blood pressure worse or increase your risk of heart failure. For people with ulcers and stomach bleeding: Mefenamic acid increases your risk of bleeding or ulcers in your stomach or intestines. These can occur at any time and without any warning signs or symptoms. For people with asthma: Mefenamic acid may cause your airways to become narrower or smaller, which can be deadly.
If your asthma gets worse, get emergency medical help. For people with kidney disease: Mefenamic acid can damage your kidneys if you take it for a long period of time. Tell your doctor if you have a history of kidney disease. For pregnant women: Mefenamic acid has not been sufficiently studied in pregnant women.
Women who are breastfeeding: Small amounts of mefenamic acid may be passed into your breast milk and cause side effects in your child.
This can lead to a buildup of the drug in your body and increase your risk of side effects. Mefenamic acid oral capsule is used for short-term treatment. For this drug to work well, a certain amount needs to be in your body at all times. But if your symptoms are severe, call or go to the nearest emergency room right away. What to do if you miss a dose: This medication is taken every six hours as needed. If you planned to take it and missed a dose, take it as soon as you can. After you take it, wait another six hours for the next dose.
This could result in dangerous side effects. A prescription for this medication is refillable. You should not need a new prescription for this medication to be refilled. Your doctor will write the number of refills authorized on your prescription.
Not every pharmacy stocks this drug. When filling your prescription, be sure to call ahead to make sure your pharmacy carries it. Many insurance companies require a prior authorization for this drug. Do not keep out-of-date or unwanted medicines. Take them to your local pharmacy which will dispose of them for you. Dated January I always have unpredictable periods, I don't even know when my period ends, sometime I'd have normal periods but most of the time I'd have period that last days, worst is 1 month..
I don't know Disclaimer: This article is for information only and should not be used for the diagnosis or treatment of medical conditions. Egton Medical Information Systems Limited has used all reasonable care in compiling the information but make no warranty as to its accuracy.
Consult a doctor or other health care professional for diagnosis and treatment of medical conditions. For details see our conditions. Take mefenamic acid with food. In this article About mefenamic acid Before taking mefenamic acid How to take mefenamic acid Getting the most from your treatment Can mefenamic acid cause problems?
How to store mefenamic acid Important information about all medicines. Dosing regimens for these levels of efficacy are naproxen or mg, ibuprofen mg and mefenamic acid to mg, all four times daily for three days. Aspirin is less effective than these drugs, and paracetamol, based on a single trial, was not effective in primary dysmenorrhoea.
Treatment is usually with NSAIDs and minor analgesics, based on the findings that prostaglandins are implicated in the pathogenesis of dysmenorrhoea. NSAIDs are peripheral prostaglandin synthetase inhibitors, but paracetamol is not. Efficacy of minor analgesics in primary dysmeonrrhoea: a systematic review.
British Journal of Obstetrics and Gynaecology ; Inclusion criteria were randomised, controlled trials of analgesics in dysmenorrhoea; pain outcome; at least single-blind. Searches were restricted to ibuprofen, aspirin, paracetamol UK license for dysmenorrhoea and naproxen, mefenamic acid Ponstan comparitors. Primary dysmenorrhoea was defined as patient history of painful menstrual cycles not caused by organic disease or intrauterine device.
Patients with secondary dysmenorrhoea were not included in the pooling of data. It works by stopping the body's production of a substance that causes pain, fever, and inflammation. Mefenamic acid comes as a capsule to take by mouth. It is usually taken with food every 6 hours as needed for up to 1 week.
Follow the directions on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take mefenamic acid exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor. This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.
Take the missed dose as soon as you remember it. However, if it is almost time for the next dose, skip the missed dose and continue your regular dosing schedule. Do not take a double dose to make up for a missed one.
Keep this medication in the container it came in, tightly closed, and out of reach of children. Store it at room temperature and away from excess heat and moisture not in the bathroom.
It is important to keep all medication out of sight and reach of children as many containers such as weekly pill minders and those for eye drops, creams, patches, and inhalers are not child-resistant and young children can open them easily. To protect young children from poisoning, always lock safety caps and immediately place the medication in a safe location — one that is up and away and out of their sight and reach.
Unneeded medications should be disposed of in special ways to ensure that pets, children, and other people cannot consume them. However, you should not flush this medication down the toilet. Instead, the best way to dispose of your medication is through a medicine take-back program.
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