Plan B One-Step® is available for any woman who needs it—with no age restriction.

The sooner you take emergency contraception, the better it works. You should use Plan B One-Step® within 72 hours (3 days) after you have had unprotected sex or experienced birth control failure. Plan B One-Step® is a backup method of birth control you can use when:

  • You didn't use any birth control method
  • Your regular birth control method failed (e.g., your partner's condom broke or slipped)
  • You made a mistake with your regular method (e.g., you forgot to take your regular birth control pill)

If you have any questions about whether you should take Plan B One-Step®, please talk to your healthcare provider.

You should resume your regular method of birth control—or start one, if you don’t have a regular method—right away, since Plan B One-Step® does not protect against additional acts of unprotected sex. For more information, talk to your healthcare provider.

Do not take Plan B One-Step®:
  • If you're already pregnant, because it won't work
  • If you're allergic to levonorgestrel or any of the ingredients in Plan B One-Step®
  • In place of regular birth control, because it’s not as effective

Plan B One-Step® won’t protect you against HIV/AIDS or other sexually transmitted diseases (STDs).

NEXT: Safety and Possible Side Effects