Plan B One-Step® emergency contraception is a backup plan that helps prevent pregnancy when taken within 72 hours (3 days) after unprotected sex or birth control failure. The sooner it’s taken, the better it works. It contains levonorgestrel, the same hormone used in many birth control pills—just at a higher dose. It should not be used as regular birth control, because it’s not as effective.

Plan B One-Step® is:

Generally safe and effective—when used as directed, Plan B One-Step® helps prevent nearly 7 out of 8 potential pregnancies.

Some women may experience side effects, such as a period that is lighter, heavier, early or late; nausea; lower abdominal pain/cramps; tiredness; headache; dizziness; breast tenderness; and vomiting. Learn more

Accessible—the first FDA-approved emergency contraceptive to be available over the counter. It can usually be found in the family planning aisle at many retail stores when you need it—without a prescription or ID, and with no age restriction. Find it now

Recommended—the #1 OB/GYN recommended brand* of emergency contraception.1

Established—the brand of emergency contraception millions of women have chosen.2

Savings—a valuable coupon can be downloaded to help you save on Plan B One-Step®. Save now

Plan B One-Step® is NOT:

It's not an abortion pill. It will not work if you are already pregnant and will not affect an existing pregnancy. It is not intended for routine use because it is not as effective as regular birth control methods. It does not protect you against HIV/AIDS or other sexually transmitted diseases (STDs).

NEXT: Learn how Plan B One-Step® works

*Survey of 1000 OB/GYNs, February 2016.
References: 1. Market research, February 2016. Teva Women's Health, Inc. 2. FDA drug use review, December 2011.