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Plan B One-Step

"Nov. 20, 2012 -- Oral contraceptives should be made available without a prescription to reduce unintended pregnancies, according to a newly published opinion by the American College of Obstetricians and Gynecologists (ACOG).

Whether t"...

Plan B One-Step

Plan B One-Step
(levonorgestrel) Tablet, 1.5 mg, for Oral Use

Plan B One-Step

DRUG DESCRIPTION

The Plan B One-Step (levonorgestrel tablet) tablet contains 1.5 mg of a single active steroid ingredient, levonorgestrel [18,19-Dinorpregn-4-en-20-yn-3-one-13-ethyl-17-hydroxy-, (17 α)-(-)-], a totally synthetic progestogen. The inactive ingredients are colloidal silicon dioxide, corn starch, lactose monohydrate, magnesium stearate, potato starch, and talc.

Levonorgestrel has a molecular weight of 312.45, and the following structural and molecular formulas:

Plan B One-Step (levonorgestrel)  Structural Formula Illustration

What are the possible side effects of levonorgestrel emergency contraceptive (Next Choice, Plan B, Plan B One-Step)?

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...

Read All Potential Side Effects and See Pictures of Plan B One-Step »

Last reviewed on RxList: 7/30/2009
This monograph has been modified to include the generic and brand name in many instances.

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Report Problems to the Food and Drug Administration

 

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


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