Plan B One-Step™ (levonorgestrel) is an emergency contraceptive used to prevent pregnancy in women who have had unprotected sex.
However, because Plan B is not suitable for everyone, make sure to review the prescribing information on this medication before starting treatment.
For example, you should talk with your healthcare provider before taking Plan B if you have certain medical conditions, such as
diabetes or certain
allergies. Although most women do not experience problems with this medication, Plan B can cause side effects -- common ones include nausea, fatigue, and
headaches.
If a fertilized egg has already implanted into the uterus, Plan B will not cause an abortion.
(Click Plan B for a more in-depth look at important information on this medication. This article discusses how Plan B works, lists possible side effects, and offers some general tips on when and how to take it.)