Taken as directed, Postinor 2 is 95% effective when taken within 24 hours of unprotected sex. Its effectiveness decreases to 58% if taken between 49 to 72 hours after the event. I would assume that taking only one dose would drop its effectiveness by close to 50%.
You could check with your pharmacist or physician. If you do not have vaginal bleeding within three weeks of taking the pill, take a pregnancy test.
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Hello Anonymous,
Taken as directed, Postinor 2 is 95% effective when taken within 24 hours of unprotected sex. Its effectiveness decreases to 58% if taken between 49 to 72 hours after the event. I would assume that taking only one dose would drop its effectiveness by close to 50%.
You could check with your pharmacist or physician. If you do not have vaginal bleeding within three weeks of taking the pill, take a pregnancy test.
Regards,
January 5, 2015 - 9:13amMaryann
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