How effective is Plan B?
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The morning-after pill Plan B is most effective (>97%) when taken within 24 hours of unprotected sex and 75%-89% effective if you take it within three days.
Taking Plan B at the appropriate time after unprotected intercourse can help prevent unwanted pregnancies.
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Plan B One-Step Emergency Contraceptive (72 Hour Efficacy Window)
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Take Action Morning-After Pill: Uses and More
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How Effective is Plan B? Experts Discuss - GoodRx
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Plan B Emergency Contraception: Where to Get It, Purchase Limits, Effectiveness - CNET
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The Pitt Prescription Navigating birth control and Plan B following Valentine's Day - The Pitt News
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Can you take Plan B while on the birth control pill?
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Ella vs. Plan B for Emergency Contraception - GoodRx
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How Does Plan B Work?
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How to Use the Morning-After Pill
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Emergency Contraception Basics
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How Effective is Plan B? Experts Discuss - GoodRx
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Plan B: Effectiveness, How It Works, Side Effects, and More
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The Morning After Pill: Why the Emergency Contraception Pill Fails
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How Effective is Plan B? Experts Discuss - GoodRx
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Plan B One-Step Oral: Uses, Side Effects, Interactions, Pictures, Warnings & Dosing - WebMD