For Healthcare Professionals > Plan B One‑Step® How Plan B Works Plan B Side Effects Taking Plan B Countdown Calculator Find a Store How to Save Site Map Home How Plan B Works Plan B Side Effects Taking Plan B Countdown Calculator Find a Store How to Save Contact Us FAQs News & Media Resources Privacy Notice Terms of Use Contact Us FAQs News & Media Resources Privacy Notice Terms of Use Site Map Instagram Facebook YouTube Twitter Use as directed. Plan B One‑Step is a registered trademark of Foundation Consumer Healthcare. © 2020 Foundation Consumer Healthcare. This site is intended for US audiences only.

For Healthcare Professionals > Plan B One‑Step® How Plan B Works Plan B Side Effects Taking Plan B Countdown Calculator Find a Store How to Save How long do you have to take Plan B? 72 hours (3 days) 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. < When did you have unprotected sex? WED 1 THU 2 FRI 3 SAT 4 Need to find a store? Find Plan B yourself in the family planning aisle at major retailers like CVS, Walgreens, Target, Walmart, and more. Find a store near you What you need to know about Plan B Emergency contraception that works by temporarily delaying ovulation 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 See how Plan B works Contact Us FAQs News & Media Resources Privacy Notice Terms of Use Site Map Instagram Facebook YouTube Twitter Use as directed. Plan B One‑Step is a registered trademark of Foundation Consumer Healthcare. © 2020 Foundation Consumer Healthcare. This site is intended for US audiences only.