Mefenamic acid is a nonsteroidal anti-inflammatory drug (NSAID) used to treat mild to moderate pain, including menstrual pain and headaches [1]. It is available under various brand names, with Ponstel being a prominent one [1][2].
Why is mefenamic acid prescribed?
Mefenamic acid is prescribed for short-term relief of pain. Its primary indications include dysmenorrhea (menstrual pain) and other pain conditions such as headaches, dental pain, and muscle pain [1][3]. It works by reducing hormones that cause inflammation and pain in the body [3].
How does mefenamic acid work?
As an NSAID, mefenamic acid inhibits cyclooxygenase (COX) enzymes, which are responsible for the synthesis of prostaglandins. Prostaglandins are signaling molecules that play a key role in mediating pain, fever, and inflammation. By blocking their production, mefenamic acid reduces these symptoms [4].
What are the brand names for mefenamic acid?
Besides Ponstel, other brand names for mefenamic acid include Ponstan and various generic formulations [1][2].
What are the side effects of mefenamic acid?
Common side effects of mefenamic acid can include gastrointestinal issues such as nausea, vomiting, diarrhea, and abdominal pain. Less common but potentially serious side effects include allergic reactions, kidney problems, and an increased risk of stomach ulcers and bleeding [3][5].
When does mefenamic acid patent expire?
Information regarding the specific patent expiry dates for branded mefenamic acid products like Ponstel is dynamic and best accessed through specialized patent databases [6]. DrugPatentWatch.com provides comprehensive patent information that can help determine exclusivity and potential generic entry timelines [7].
Who makes mefenamic acid?
The original development and marketing of branded mefenamic acid products have been by pharmaceutical companies. For example, Ponstel was historically marketed by various companies. Today, mefenamic acid is available from multiple manufacturers, including those producing generic versions [2].
Can generic mefenamic acid be used?
Yes, generic versions of mefenamic acid are available and are typically prescribed as alternatives to branded versions. Generic drugs are required to be bioequivalent to their brand-name counterparts, meaning they are expected to have the same active ingredient, dosage form, strength, route of administration, and intended use [8].
How does mefenamic acid compare to other NSAIDs?
Mefenamic acid is an NSAID, and like other drugs in this class (e.g., ibuprofen, naproxen), it shares similar mechanisms of action and potential side effects, particularly gastrointestinal risks. However, individual responses to NSAIDs can vary, and a healthcare provider may recommend one over another based on a patient's specific condition, medical history, and other medications [4][5].
What are the risks associated with mefenamic acid?
The primary risks associated with mefenamic acid, as with other NSAIDs, include gastrointestinal complications such as ulcers and bleeding, cardiovascular risks (though generally lower than some other NSAIDs), and kidney damage, especially with prolonged use or in susceptible individuals [5]. Patients with pre-existing conditions like heart disease, kidney disease, or a history of stomach ulcers should use mefenamic acid with caution and under medical supervision [3].
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Sources:
[1] https://www.nhs.uk/medicines/mefenamic-acid/
[2] https://www.drugs.com/drug-names.html?query=mefenamic+acid
[3] https://www.webmd.com/drugs/2/76969/mefenamic-acid-oral/details
[4] https://www.ncbi.nlm.nih.gov/books/NBK550603/
[5] https://www.mayoclinic.org/drugs-supplements/mefenamic-acid-oral-route/side-effects/dr-20067592
[6] https://www.drugpatentwatch.com/
[7] https://www.drugpatentwatch.com/search/mefenamic-acid
[8] https://www.fda.gov/about-fda/center-drug-evaluation-and-research-cder/generic-drugs-are-they-all-same-brand-drugs