Plan B One-Step Uses

Plan B One-Step is a type of emergency contraception that is used to prevent pregnancy after unprotected sex (sexual intercourse without use of a birth control method or if the birth control method was not properly used or failed - for example, if birth control pills were not taken on schedule or a condom slipped or broke). This emergency contraceptive can be taken up to 72 hours after unprotected sexual intercourse. However, it is not for routine use as a birth control method.

There may be other uses of Plan B One-Step—your healthcare professionals can give you further drug information.

Plan B One-Step Mechanism of Action

Plan B One-Step morning-after pill works by preventing ovulation or the release of an egg from the ovary. It is not an abortion pill and will not end a pregnancy that has already started. Plan B One-Step (levonorgestrel morning-after pills) does not protect against sexually transmitted infections such as chlamydia, gonorrhea, and HIV.

Plan B One-Step Doses

The Plan One-Step pill contains levonorgestrel 1.5 mg. Take one tablet within 72 hours (3 days) of unprotected sex to prevent pregnancy. The sooner you take it, the more effective it is.