How effective is Plan B?

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.

How Plan B Works: What to Know Before Taking the Morning-After Pill

Taking Plan B While on the Pill

Emergency contraception pill Plan B is 30% more effective when taken with this drug, new research shows

How Effective Is the Morning After Pill? - Youly

How Long Do Plan B Side Effects Last? What To Expect

Frequently asked questions

Yes, Plan B Does Have a Weight Limit

The Overuse Of Plan B - Are You Aware Of the Risks?

Plan B Emergency Contraception: Where to Get It, Purchase Limits, Effectiveness - CNET

Plan B Emergency Contraception: Where to Get It, Purchase Limits, Effectiveness - CNET

Plan B Morning After Pill

How Many Times Can You Take Plan B?