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Who should not take levonorgestrel?

Women who have a known history of allergy to levonorgestrel should not take it, nor should women who think they are already pregnant. Girls who have not yet had a menstrual cycle and postmenopausal women should not use levonorgestrel. In addition, levonorgestrel may affect your blood sugar, so women with diabetes should be monitored closely while taking this medication.

You should avoid taking levonorgestrel altogether if you're taking St. John's wort, rifampin, or nevirapine, or if you have breast cancer, a blood clotting disorder, have had a stroke, or have had instances of brain bleeding or irregular vaginal bleeding.

Continue Learning about Levonorgestrel

What should I know about levonorgestrel before taking it?
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Levonorgestrel is not intended for use as a regular contraceptive. It should be used only as an emer...
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What happens if I miss a dose of levonorgestrel?
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Missing a dose of levonorgestrel greatly increases your risk of becoming pregnant. You should ta...
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Are there any risks in using the levonorgestrel-releasing implant?
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Yes. Progestin, the hormone used in the levonorgestrel-releasing implant, is linked to a higher risk...
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Can levonorgestrel be taken more than once?
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It is safe to take levonorgestrel by mouth more than once. However, it is not intended for use as a ...
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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.