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Who should not take mefenamic acid?

You should not take mefenamic acid if you are allergic to mefenamic acid, any inactive ingredients in mefenamic acid or Ponstel capsules, iodides or any other nonsteroidal anti-inflammatory drug (such as aspirin). You also should not take mefenamic acid if you have had recent surgery on the blood vessels of your heart; if you are currently bleeding; or if you have kidney disease or a disorder causing ulcers or inflammation in your stomach or intestines (such ulcerative colitis or Crohn's disease). If you are a woman, you should not take mefenamic acid in the last third of a pregnancy, because it can cause a fetus to have a serious heart problem called premature closure of the ductus arteriosus. Do not use while breastfeeding.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.