Plan B One-Step (LEVONORGESTREL) Plan B One-Step (LEVONORGESTREL)

Important Information about Plan B One-StepĀ®

How Plan B One-Step® Works

There are many misconceptions about emergency contraception, so it's important for women to know that Plan B One-Step® works similarly to regular birth control pills; it simply contains a larger dose of the hormone levonorgestrel. Plan B One-Step® works primarily by:

  • Preventing ovulation
  • It may also work by:
    • Possibly preventing fertilization by altering tubal transport of sperm and/or egg
    • Altering the endometrium, which may inhibit implantation

Plan B One-Step® should not be taken as routine birth control as it is not as effective. Plan B One-Step® should be taken as soon as possible within
72 hours (3 days) of contraceptive failure or unprotected sex. When taken as directed, nearly 7 out of 8 expected pregnancies were prevented.

Plan B One-Step® is not effective once the process of implantation has begun.
It will not harm an existing pregnancy.

Did You Know...?

Unintended pregnancy rates remain high—more than 1 in 3 pregnancies are unplanned.4
Unintended pregnancy rates remain high—more than 1 in 3 pregnancies are unplanned.<sup><a style='color:#fff;' href='/hcp/references.aspx'>4</a></sup>