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 You only have a few days to prevent a pregnancy after unprotected sex or contraceptive failure (the condom slipped, or you missed your pill). Every hour counts. When taken as directed—within 72 hours (3 days) after contraceptive failure or unprotected intercourse—approximately seven out of eight women who would have gotten pregnant will not become pregnant after taking Plan B® One-Step. And it works even better if you take it within the first 24 hours after unprotected sex, so you should take it as soon as possible.  Although safe and effective, Plan B® One-Step isn’t right for everyone. Do not use Plan B® One-Step:
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When taken as directed, approximately seven |
Every hour counts. See how effective Plan B One-Step® can be for you.
When did you have contraceptive failure or unprotected sex?
- Sperm can live in the female reproductive tract for 5 to 6 days.1, 2
- Plan B One-Step® is NOT the abortion pill (RU-486).
- A woman's chances of becoming pregnant from unprotected sex are approximately 20-25% each cycle–even if it's her first time.³
- Douching, washing, or urinating after sex does not decrease the chances of conception, as sperm enter the cervix immediately and are out of reach.4
- A 28-day ovulation cycle is only an average; every woman's cycle is different and
varies.1, 2 - A woman can become pregnant from unprotected sex that takes place any time from 5 days before ovulation to 1 day afterwards.¹
1. Contraceptive Technology. 19th Edition.
2. Westhoff. Emergency Contraception. N Engl J Med 2003; 349:180-5.
3. Harrison's Principles of Internal Medicine. 16th Edition.
4. The Cleveland Clinic Foundation. Contraception Myths. Available at: http://my.clevelandclinic.org/healthy_ living/birth_control/hic_contraception_myths.aspx. Accessed March 2010.
Important Safety Information
Plan B One-Step® is intended to prevent pregnancy after known or suspected contraceptive failure or unprotected intercourse.
Plan B One-Step® isn't effective if you're already pregnant, and it won't terminate an existing pregnancy. Plan B One-Step® does not protect against HIV and other sexually transmitted diseases (STDs). Side effects may include changes in your period, nausea, lower abdominal pain, fatigue, headache, and dizziness. If your period is more than a week late, you may be pregnant. You should not take Plan B One-Step® if you are already pregnant. Plan B One-Step® should not be used as a routine birth control, as it is not as effective. If you have severe abdominal pain, you may have an ectopic pregnancy, and should get immediate medical help. You are encouraged to report negative side effects of prescription drugs to the FDA at fda.gov/medwatch or call 1-800-FDA-1088. Click here for full product information.
©2011 Teva Women's Health, Inc. All rights reserved.
Plan B One-Step® is a registered trademark of Women's Capital Corporation.
This site is intended for US audiences only.
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