- Take the first tablet as soon as possible within 3 days (72 hours) after unprotected sex.
- Take the second tablet 12 hours after you take the first tablet.
That’s it. When you take Plan B® as directed, you reduce your risk for pregnancy by up to 89%. And the sooner you take it, the more effective it is.
Some women may have their period earlier or later than their normal cycle. If your menstrual cycle is delayed more than one week, you may be pregnant.
>> Plan B® safety and effectiveness
View Important Safety Information and full Prescribing Information.