The side effects of Plan B One-Step® are generally mild. Some women may experience side effects similar to those of many birth control pills. These include:
- Changes in your period
- Nausea
- Lower abdominal pain
- Fatigue
- Headache
- Dizziness
- Breast tenderness
If you should experience severe abdominal pain, you may have an ectopic pregnancy and should get immediate medical attention.
The only way of knowing whether Plan B One-Step® has worked is when you get your next period, which should come at the expected time or within a week of the expected time. If your period is more than seven days late, you may be pregnant. Keep in mind, Plan B One-Step® is less likely to work if:
- You have unprotected sex, or contraceptive failure again in the same menstrual cycle after taking
Plan B One-Step® - You've already had unprotected sex or contraceptive failure earlier in your menstrual cycle
- You vomit within two hours of taking Plan B One-Step® (talk to your healthcare professional if this happens)
Do not use Plan B One-Step®:
- If you’re already pregnant, because it won’t work
- If you’re allergic to levonorgestrel or any of the ingredients in Plan B One-Step®
- In place of regular birth control. Plan B One-Step® should not be used as routine birth control, as it isn’t as effective. Plan B One-Step® won’t protect you from HIV infection (the virus that causes AIDS) or any other sexually transmitted diseases (STDs)
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.
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