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.

Tennessee did not ban Plan B morning after pill

How effective is Plan B?

How effective is Plan-B and how late can you take the plan? - InternationalDrugMart

How Does Plan B Work, and Is It Always Effective?

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

Take Action vs. Plan B Compared: Which is Better?

CDC: 'Plan B' on the rise among teen girls

Does Being Overweight Make Plan B Less Effective?

New Warning: Morning-After Pill Doesn't Work for Women Over 176 Pounds – Mother Jones

Morning-After Pill, Emergency Contraception

Plan B:' How It Works

Does Plan B Expire? What to Know About Shelf Life and Storage

How Effective is Plan B? Experts Discuss - GoodRx

Plan B: Effectiveness, How It Works, Side Effects, and More

Ella vs. Plan B for Emergency Contraception - GoodRx