how effective is plan b after a day?
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Plan B has a 95% chance of preventing pregnancy if you take it within 24 hours. If you take it within 72 hours, you have up to an 89% chance. "Plan B is FDA approved for use up to 72 hours after unprotected sex.
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Plan B, My Way, Take Action, and other levonorgestrel morning-after pills work best when you take them quickly after unprotected sex. They'll work best up to 3 days (72 hours) after unprotected sex. You can take these up to 5 days (120 hours) after sex, but they don't work nearly as well by day 5.
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Emergency contraceptive pills (ECPs), also known as the "morning after pill,” or Plan B (or generic brands) are most effective when taken within 72 hours (3 days) after having sex. ECPs can be used up to 5 days after having sex and not just the next morning.
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The emergency contraceptive Pill (ECP) is also known as the morning-after pill, but it's not just for the morning after. ECPs are most effective when taken soon after unprotected sex, but can still have some effect for up to 4-5 days (96-120 hours) depending on where you are in your cycle and which pill(s) you take.
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If taken within 72 hours of unprotected sex, Plan B is 89 percent effective at preventing pregnancy, according to Planned Parenthood. The drug is less effective after three days, but can work up to five days after unprotected sex.
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How long after having sex will emergency contraception still work? That depends. Plan B One-Step and generic levonorgestrel work best if you take them within 3 days after sex, but they may work up to 5 days after sex. Ella and the IUD can work up to 5 days after sex.
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HOW LONG IS PLAN B® EFFECTIVE? The sooner you take plan B®, the more effective it is. It can prevent pregnancy if taken within 72 hours and preferably within 12 hours of unprotected sex. If you take it within 24 hours of unprotected sex, it is 95% effective.
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To use the morning-after pill: Follow the morning-after pill's instructions. If you use Plan B One-Step, take one Plan B One-Step pill as soon as possible and less than 72 hours after unprotected sex. If you use ella, take one ella pill as soon as possible and less than 120 hours after unprotected sex.
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Days 2 and 3: Symptoms may continue over the course of days two and three. Day 4: Most people will no longer experience the side effects of taking a Plan B after four days of using the pill.
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Ella is More Effective for Longer If taken within 72 hours, Ella is still 42% more effective than Plan B. Emergency contraceptives always work best the sooner you take them. However, Ella can work five days after unprotected sex, while Plan B only works three days after unprotected sex.
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Emergency Contraception (Morning After Pill) Important Notes: Emergency contraception may prevent pregnancy for three days (72 hours) and sometimes five days (120 hours) after unprotected sex. Take EC as soon as possible after unprotected sex.
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You don't take it soon enough. The major caveat here is that they work best when taken within 72 hours, then the efficacy starts dropping. Within three days after unprotected sex, these kinds of morning-after pills are between 75 and 89 percent effective at preventing pregnancy, according to Planned Parenthood.
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Plan B® is effective Although few women experience vomiting with Plan B®, if you vomit within two hours of taking Plan B®, you might not have absorbed the medication contained in the pill. Call your healthcare professional, as you might need another dose.
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No morning after pill is 100% effective. Research undertaken by the World Health Organisation on Levonorgestrel found that: when taken within 24 hours, it is 95% effective. when taken within 48 hours, it is 85% effective. when taken within 72 hours, it is 58% effective.
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Taking the morning-after pill — emergency contraception — more than five days after unprotected vaginal intercourse won't have any effect. Emergency contraception — the morning-after pill — is effective if started within 120 hours, or five days. The sooner emergency contraception is started, the better it works.
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There are two types of morning after pill: Levonelle® and ellaOne®. Levonelle can be taken up to 72 hours (3 days) after unprotected sex. ellaOne can be used up to 120 hours (5 days) after unprotected sex. Regular family planning methods are more effective than emergency contraceptive pills.
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How effective is it? The earlier the morning-after pill is taken after unprotected sex, the greater the success in preventing pregnancy. Ideally the pill should be taken within 72 hours, in which case the rate of efficacy is around 85%. If taken after 72 hours, the effectiveness reduces.