Fact: Plan B One-Step emergency contraception is available for purchase right off the shelf in the family planning aisle with no restrictions to purchase in every U.S. state. That means no matter where you are, Plan B is available – with no prescription or ID required. Plan B must be taken within 72 hours after unprotected sex or if your regular birth control method falls through. The sooner it’s taken, the better it works. Finding the closest retailer to you is easy - head to the link in our bio, so you can say #IveGotThis. Use as directed.