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Emergency contraception, available in just one pill.
  • Take Plan B® One-Step as soon as possible, within 72 hours (3 days) after unprotected sex or contraceptive failure.

That’s it. When taken as directed, approximately seven out of eight women who would have gotten pregnant will not become pregnant after taking Plan B® One-Step.

Note: If you should vomit within two hours of taking Plan B® One-Step pill, call your healthcare professional to see if you should consider repeating the dose.

Some women may have their period earlier or later than their normal cycle. If your period is more than one week late, you may be pregnant.