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

Side Effects

Side Effects & Tolerability

Plan B One-Step® is a single, progestin-only (levonorgestrel) tablet. Levonorgestrel is an ingredient that has been commonly used in many birth control pills for several decades. Advise patients that Plan B One-Step® should not be taken as routine birth control as it is not as effective.

When taken as directed, Plan B One-Step® is generally safe for women. Some women will have temporary side effects that include:

  • Menstrual changes
  • Nausea
  • Lower stomach (abdominal) pain
  • Tiredness
  • Headache
  • Dizziness
  • Breast pain
  • Vomiting

These are similar to the side effects that some women have when taking regular birth control pills. Some women taking Plan B One-Step® will have menstrual changes such as spotting or bleeding before their next period. Some women may have a heavier or lighter next period, or a period that is early or late. A pregnancy test should be given if a period is more than one week late. Having severe abdominal pain may be a sign of an ectopic pregnancy for which immediate medical attention is required.

Did You Know...?

52% of unintended pregnancies are due to unprotected sex and 43% result from inconsistent or incorrect use of birth control.5
52% of unintended pregnancies are due to unprotected sex and 43% result from inconsistent or incorrect use of birth control.<sup><a style='color:#fff;' href='/hcp/references.aspx'>5</a></sup>