Generated automatically from the NAFDAC register, WHO alerts and community data as of today. Not medical advice — always follow your doctor or pharmacist.
From the official U.S. FDA label for mefenamic acid, the active ingredient registered with NAFDAC.
Carefully consider the potential benefits and risks of mefenamic acid capsules and other treatment options before deciding to use mefenamic acid capsules. Use the lowest effective dose for the shortest duration consistent with individual patient treatment goals (see WARNINGS ; Gastrointestinal Bleeding, Ulceration, and Perforation ). Mefenamic acid capsules are indicated: For relief of mild to moderate pain in patients ≥14 years of age, when therapy will not exceed one week (7 days). For treatment of primary dysmenorrhea.
The following adverse reactions are discussed in greater detail in other sections of the labeling: Cardiovascular Thrombotic Events (see Warnings ) GI Bleeding, Ulceration and Perforation (see Warnings ) Hepatotoxicity (see Warnings ) Hypertension (see Warnings ) Heart Failure and Edema (see Warnings ) Renal Toxicity and Hyperkalemia (see Warnings ) Anaphylactic Reactions (see Warnings ) Serious Skin Reactions (see Warnings ) Hematologic Toxicity (see Warnings ) Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another …
Mefenamic acid capsules are contraindicated in the following patients: Known hypersensitivity (e.g., anaphylactic reactions and serious skin reactions) to mefenamic acid or any components of the drug product (see WARNINGS ; Anaphylactic Reactions, Serious Skin Reactions ). History of asthma, urticaria, or other allergic-type reactions after taking aspirin or other NSAIDs. …
Cardiovascular Thrombotic Events Clinical trials of several COX-2 selective and nonselective NSAIDs of up to three years duration have shown an increased risk of serious cardiovascular (CV) thrombotic events, including myocardial infarction (MI) and stroke, which can be fatal. Based on available data, it is unclear that the risk for CV thrombotic events is similar for all NSAIDs. The relative increase in serious CV thrombotic events over baseline conferred by NSAID use appears to be similar in those with and without known CV disease or risk factors for CV disease. …
Pregnancy Risk Summary Use of NSAIDs, including mefenamic acid, can cause premature closure of the fetal ductus arteriosus and fetal renal dysfunction leading to oligohydramnios and, in some cases, neonatal renal impairment. Because of these risks, limit dose and duration of mefenamic acid use between about 20 and 30 weeks of gestation, and avoid mefenamic acid use at about 30 weeks of gestation and later in pregnancy [ see Warnings ; Fetal Toxic …
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Fenamex 500 Tablet contains Mefenamic Acid (500 mg), as tablet, according to its NAFDAC registration record.
Yes. Fenamex 500 Tablet is listed on the NAFDAC register under registration number B4-3765, and its registration is active as of 5 November 2026.
No WHO falsified or substandard medical product alert currently matches Fenamex 500 Tablet in our automatically synced alert list.
Run a free authenticity scan with the NAFDAC number B4-3765, your pack's expiry date and batch number to get a Trust Score, compare the pack with the NAFDAC record (ingredient, strength, form, manufacturer), and buy only from licensed pharmacies.
Carefully consider the potential benefits and risks of mefenamic acid capsules and other treatment options before deciding to use mefenamic acid capsules. Use the lowest effective dose for the shortest duration consistent with individual patient treatment goals (see WARNINGS ; Gastrointestinal Bleeding, Ulceration, and Perforation ). Mefenamic acid capsules are indicated: For relief of mild to mod (Summarised from the official U.S. FDA label for mefenamic acid. Always follow your doctor or pharmacist.)
Reviews are personal experiences from RxVerify users, not medical advice. Report side effects to your doctor and to NAFDAC.