Mefenamic acid is not available over-the-counter (OTC) in the United States. It is a prescription medication. [1]
Why is Mefenamic Acid Only Available by Prescription?
Mefenamic acid is a nonsteroidal anti-inflammatory drug (NSAID) that requires a prescription due to its potential side effects and the need for medical supervision. While other NSAIDs like ibuprofen and naproxen are available OTC for pain and inflammation, mefenamic acid is typically prescribed for short-term management of moderate to severe pain, particularly menstrual pain. [1][2]
What are the Potential Side Effects of Mefenamic Acid?
Like other NSAIDs, mefenamic acid can cause side effects. These may include gastrointestinal issues such as stomach upset, nausea, heartburn, and diarrhea. More serious risks can involve stomach ulcers, bleeding, kidney problems, and cardiovascular events. Due to these risks, it is important to use mefenamic acid only under the guidance of a healthcare professional. [3]
How Does Mefenamic Acid Work?
Mefenamic acid works by blocking the production of prostaglandins, which are chemicals in the body that contribute to inflammation, pain, and fever. By reducing prostaglandin levels, it helps to alleviate these symptoms. [2]
What Conditions is Mefenamic Acid Used For?
Mefenamic acid is primarily prescribed for the short-term relief of moderate to severe pain. It is particularly effective for menstrual pain (dysmenorrhea) and is also used for other types of pain, such as headache, muscle ache, dental pain, and pain following surgical procedures. [1][2]
Are There Other NSAIDs Available Over-the-Counter?
Yes, several NSAIDs are available over-the-counter in the United States. These include ibuprofen (Advil, Motrin) and naproxen (Aleve). These OTC NSAIDs can be used for mild to moderate pain, inflammation, and fever. [4]
What is the Difference Between Prescription and OTC NSAIDs?
The primary difference lies in their potency, intended use, and the level of medical oversight required. Prescription NSAIDs, like mefenamic acid, are generally stronger or intended for more specific conditions and durations of use that necessitate a doctor's prescription and monitoring. OTC NSAIDs are formulated for general pain relief for less severe symptoms and are considered safe for self-administration when used as directed. [3][4]
How Long Can Mefenamic Acid Be Taken?
Mefenamic acid is intended for short-term use only. Typically, it is prescribed for a few days to manage acute pain. Prolonged use without medical supervision is not recommended due to the increased risk of serious side effects. [1]
Who Should Not Take Mefenamic Acid?
Individuals with a history of stomach ulcers or bleeding, severe kidney or liver disease, heart failure, or those who are allergic to aspirin or other NSAIDs should generally avoid mefenamic acid. It is also not recommended for use during the last trimester of pregnancy. Consulting a healthcare provider is crucial to determine if mefenamic acid is appropriate for an individual. [3]
Sources:
[1] https://www.drugs.com/mefenamic-acid.html
[2] https://www.ncbi.nlm.nih.gov/books/NBK551536/
[3] https://www.webmd.com/drugs/2/drug-17404/mefenamic-acid-oral/details
[4] https://www.medicalnewstoday.com/articles/324904