How long do you have to take Plan B?
The sooner you take it, the better it works
Plan B helps prevent pregnancy before it starts by temporarily delaying ovulation when taken within 72 hours (3 days) after unprotected sex. Wondering whether you’re within the window to take Plan B? Enter the date and time you had unprotected sex below. Not sure when exactly you had unprotected sex? Reach out to your healthcare provider for more help.
You have 72 hours left to take Plan B
It looks like you’ve missed the 72‑hour window to take Plan B. Please contact your current healthcare provider as soon as possible.
What you need to know about Plan B
- Plan B is the #1 OB/GYN recommended emergency contraception brand
- Won’t interfere with your regular birth control, or make it any less effective
- Won’t impact your ability to get pregnant in the future