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Plan B One-Step

Last reviewed on RxList: 9/6/2016
Plan B One-Step Side Effects Center

Last reviewed on RxList 8/26/2015

Plan B One-Step (levonorgestrel tablet) is a progestin-only emergency contraceptive used for prevention of pregnancy following unprotected intercourse or a known or suspected contraceptive failure. People sometimes call Plan B One-Step the "morning after pill." Plan B One-Step does not protect against sexually transmitted diseases. Common side effects of Plan B One-Step include

The recommended dosage of Plan B One-Step is one pill as soon as possible within 72 hours after unprotected intercourse or a known or suspected contraceptive failure. Plan B One-Step may interact with rifampin, barbiturates, or seizure medicines. Tell your doctor all medications and supplements you use. It can be used at any time during the menstrual cycle. If vomiting occurs within two hours of taking the tablet, consideration should be given to repeating the dose. Plan B One-Step should not be taken as regular birth control. Do not take Plan B One-Step if you are already pregnant. Consult your doctor before breastfeeding.

Our Plan B One-Step (levonorgestrel tablet) Side Effects Drug Center provides a comprehensive view of available drug information on the potential side effects when taking this medication.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Plan B One-Step Consumer Information

Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.

Call your doctor at once if you have severe pain in your lower stomach or side. This could be a sign of a tubal pregnancy (a pregnancy that implants in the fallopian tube instead of the uterus). A tubal pregnancy is a medical emergency.

Less serious side effects may include:

  • nausea, diarrhea, or stomach pain;
  • dizziness, tired feeling;
  • breast pain or tenderness;
  • changes in your menstrual periods; or
  • headache.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

Read the entire detailed patient monograph for Plan B One-Step (Levonorgestrel Tablet)

Plan B One-Step Professional Information

SIDE EFFECTS

No information provided. Please refer to the WARNINGS section.

Read the entire FDA prescribing information for Plan B One-Step (Levonorgestrel Tablet)

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