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Plan B

Side Effects

As with any medicine, Plan B can cause side effects. However, not everyone who uses the contraceptive will experience side effects. In fact, most women tolerate it quite well. If side effects do occur, in most cases, they are minor and either require no treatment or are easily treated by you or your healthcare provider. Serious side effects are less common.
Common side effects of Plan B include, but are not limited to:
  • Nausea
  • Abdominal pain (stomach pain)
  • Fatigue
  • Headaches
  • Changes in menstrual bleeding.
(Click Plan B Side Effects to learn more, including potentially serious side effects that you should report immediately to your healthcare provider.)

Drug Interactions With Plan B

Plan B can, theoretically, interact with a number of other medications (see Plan B Drug Interactions).

What Should I Tell My Healthcare Provider?

You should talk with your healthcare provider prior to using this medication if you:
Make sure to tell your healthcare provider about any other medications you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.
(Click Plan B Warnings and Precautions to learn more, including information on who should not take this contraceptive.)
Last reviewed by: Kristi Monson, PharmD
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