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Plan B One-Step

"If you do not want to get pregnant, there are many birth control options to choose from. No one product is best for everyone. The only sure way to avoid pregnancy and sexually transmitted infections (STIs or STDs) is not to have any sexual"...

Plan B One-Step

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

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 »

What are the precautions when taking levonorgestrel tablet (Plan B One-Step)?

Before using this medication, tell your doctor or pharmacist if you are allergic to it; or to other progestins (e.g., norethindrone); or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.

This medication should not be used if you have certain medical conditions. Before using this product, consult your doctor or pharmacist if you have: unexplained vaginal bleeding, current or suspected pregnancy.

Before using this product, tell your doctor your medical history, especially of: diabetes, migraine headaches.

This drug may make you dizzy. Do not drive, use machinery, or do any activity that requires alertness until you are sure you can perform such...

Read All Potential Precautions 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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Plan B - User Reviews

Plan B User Reviews

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Here is a collection of user reviews for the medication Plan B sorted by most helpful. Patient Discussions FAQs

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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