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What should I know about levonorgestrel before taking it?

Levonorgestrel is not intended for use as a regular contraceptive. It should be used only as an emergency contraceptive, after you've had intercourse without another form of protection. Further, it must be used within 72 hours after intercourse occurs. A single-pill form of levonorgestrel emergency contraception is now available without a prescription, sold as Plan B One-Step. Levonorgestrel does not terminate a pregnancy; it helps prevent a pregnancy from occurring. It does not prevent sexually transmitted infections.

Continue Learning about Levonorgestrel

What happens if I miss a dose of levonorgestrel?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Missing a dose of levonorgestrel greatly increases your risk of becoming pregnant. You should ta...
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What is levonorgestrel?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
Levonorgestrel is a progestin hormone that is used by women as an emergency contraceptive to pre...
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How soon will the levonorgestrel-releasing implant be effective?
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The levonorgestrel-releasing implant is effective within a few weeks of the device being implant...
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How effective is levonorgestrel at preventing pregnancy?
Stacy Wiegman, PharmDStacy Wiegman, PharmD
If used correctly, levonorgestrel can be very effective at preventing pregnancy. The sooner the ...
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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.