Plan B One-Step
Plan B One-Step also is referred to as the morning-after pill. It is intended to prevent pregnancy after a known or suspected contraceptive failure, unprotected intercourse, or forced sex. It contains large amounts of levonorgestrel, a progestin hormone found in some birth control pills. Plan B One-Step may work by preventing the egg and sperm from meeting by delaying ovulation. It won’t disrupt an implanted pregnancy, but may prevent a newly formed life from implanting in the uterus.
Plan B One-Step consists of one pill taken up to 72 hours after sex. 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 from a prior sexual encounter. Plan B One-Step should not be taken during pregnancy or used as a routine form of birth control.
There is evidence Plan B One-Step use may increase the risk for ectopic (tubal) pregnancy, a potentially life-threatening condition. Women who have severe abdominal pain may have an ectopic (tubal) pregnancy, and should seek immediate medical attention.
It is reported Plan B One-Step may prevent an average of 84% of expected pregnancies.
There is much that is unknown about Plan B One-Step including the following:
- dependence on the drug
- the effect it could have on women who have not started their period
- the effect it could have on postmenopausal women[
- liver disease
- kidney disease
- the way it interacts with other drugs
- its ability to cause a higher rate of pregnancy in Chinese women